diff --git a/Cronet/TEST_MAPPING b/Cronet/TEST_MAPPING
deleted file mode 100644
index b1f3088..0000000
--- a/Cronet/TEST_MAPPING
+++ /dev/null
@@ -1,7 +0,0 @@
-{
-  "presubmit": [
-    {
-      "name": "CtsCronetTestCases"
-    }
-  ]
-}
diff --git a/Cronet/tests/cts/Android.bp b/Cronet/tests/cts/Android.bp
index 95fc9ab..f9ff7e0 100644
--- a/Cronet/tests/cts/Android.bp
+++ b/Cronet/tests/cts/Android.bp
@@ -21,7 +21,7 @@
 // cronet_test_java_defaults can be used to specify a java_defaults target that
 // either enables or disables Cronet tests. This is used to disable Cronet
 // tests on tm-mainline-prod where the required APIs are not present.
-cronet_test_java_defaults = "CronetTestJavaDefaultsEnabled"
+cronet_test_java_defaults = "CronetTestJavaDefaultsDisabled"
 // This is a placeholder comment to avoid merge conflicts
 // as cronet_test_java_defaults may have different values
 // depending on the branch
@@ -42,7 +42,7 @@
 }
 
 android_test {
-    name: "CtsCronetTestCases",
+    name: "CtsNetHttpTestCases",
     compile_multilib: "both", // Include both the 32 and 64 bit versions
     defaults: [
         "CronetTestJavaDefaults",
@@ -59,6 +59,7 @@
         "ctstestrunner-axt",
         "ctstestserver",
         "junit",
+        "hamcrest-library",
     ],
     libs: [
         "android.test.runner",
diff --git a/Cronet/tests/cts/AndroidTest.xml b/Cronet/tests/cts/AndroidTest.xml
index d2422f1..e0421fd 100644
--- a/Cronet/tests/cts/AndroidTest.xml
+++ b/Cronet/tests/cts/AndroidTest.xml
@@ -23,14 +23,14 @@
     <option name="config-descriptor:metadata" key="parameter" value="secondary_user" />
     <target_preparer class="com.android.tradefed.targetprep.suite.SuiteApkInstaller">
         <option name="cleanup-apks" value="true" />
-        <option name="test-file-name" value="CtsCronetTestCases.apk" />
+        <option name="test-file-name" value="CtsNetHttpTestCases.apk" />
     </target_preparer>
     <test class="com.android.tradefed.testtype.AndroidJUnitTest" >
         <option name="package" value="android.net.http.cts" />
         <option name="runtime-hint" value="10s" />
     </test>
 
-    <!-- Only run CtsCronetTestcasess in MTS if the Tethering Mainline module is installed. -->
+    <!-- Only run CtsNetHttpTestCases in MTS if the Tethering Mainline module is installed. -->
     <object type="module_controller"
             class="com.android.tradefed.testtype.suite.module.MainlineTestModuleController">
         <option name="mainline-module-package-name" value="com.google.android.tethering" />
diff --git a/Cronet/tests/cts/src/android/net/http/cts/HttpEngineTest.java b/Cronet/tests/cts/src/android/net/http/cts/HttpEngineTest.java
new file mode 100644
index 0000000..b07367a
--- /dev/null
+++ b/Cronet/tests/cts/src/android/net/http/cts/HttpEngineTest.java
@@ -0,0 +1,110 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net.http.cts;
+
+import static android.net.http.cts.util.TestUtilsKt.assertOKStatusCode;
+import static android.net.http.cts.util.TestUtilsKt.skipIfNoInternetConnection;
+
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.containsString;
+import static org.junit.Assert.assertEquals;
+
+import android.content.Context;
+import android.net.http.HttpEngine;
+import android.net.http.UrlRequest;
+import android.net.http.UrlResponseInfo;
+import android.net.http.cts.util.TestUrlRequestCallback;
+import android.net.http.cts.util.TestUrlRequestCallback.ResponseStep;
+
+import androidx.test.platform.app.InstrumentationRegistry;
+import androidx.test.runner.AndroidJUnit4;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+@RunWith(AndroidJUnit4.class)
+public class HttpEngineTest {
+    private static final String HOST = "source.android.com";
+    private static final String URL = "https://" + HOST;
+
+    private HttpEngine.Builder mEngineBuilder;
+    private TestUrlRequestCallback mCallback;
+    private HttpEngine mEngine;
+
+    @Before
+    public void setUp() throws Exception {
+        Context context = InstrumentationRegistry.getInstrumentation().getContext();
+        skipIfNoInternetConnection(context);
+        mEngineBuilder = new HttpEngine.Builder(context);
+        mCallback = new TestUrlRequestCallback();
+    }
+
+    @After
+    public void tearDown() throws Exception {
+        if (mEngine != null) {
+            mEngine.shutdown();
+        }
+    }
+
+    @Test
+    public void testHttpEngine_Default() throws Exception {
+        mEngine = mEngineBuilder.build();
+        UrlRequest.Builder builder =
+                mEngine.newUrlRequestBuilder(URL, mCallback, mCallback.getExecutor());
+        builder.build().start();
+
+        mCallback.expectCallback(ResponseStep.ON_SUCCEEDED);
+        UrlResponseInfo info = mCallback.mResponseInfo;
+        assertOKStatusCode(info);
+        assertEquals("h2", info.getNegotiatedProtocol());
+    }
+
+    @Test
+    public void testHttpEngine_DisableHttp2() throws Exception {
+        mEngine = mEngineBuilder.setEnableHttp2(false).build();
+        UrlRequest.Builder builder =
+                mEngine.newUrlRequestBuilder(URL, mCallback, mCallback.getExecutor());
+        builder.build().start();
+
+        mCallback.expectCallback(ResponseStep.ON_SUCCEEDED);
+        UrlResponseInfo info = mCallback.mResponseInfo;
+        assertOKStatusCode(info);
+        assertEquals("http/1.1", info.getNegotiatedProtocol());
+    }
+
+    @Test
+    public void testHttpEngine_EnableQuic() throws Exception {
+        // The hint doesn't guarantee that QUIC will win the race, just that it will race TCP.
+        // If this ends up being flaky, consider sending multiple requests.
+        mEngine = mEngineBuilder.setEnableQuic(true).addQuicHint(HOST, 443, 443).build();
+        UrlRequest.Builder builder =
+                mEngine.newUrlRequestBuilder(URL, mCallback, mCallback.getExecutor());
+        builder.build().start();
+
+        mCallback.expectCallback(ResponseStep.ON_SUCCEEDED);
+        UrlResponseInfo info = mCallback.mResponseInfo;
+        assertOKStatusCode(info);
+        assertEquals("h3", info.getNegotiatedProtocol());
+    }
+
+    @Test
+    public void testHttpEngine_GetDefaultUserAgent() throws Exception {
+        assertThat(mEngineBuilder.getDefaultUserAgent(), containsString("AndroidHttpClient"));
+    }
+}
diff --git a/Cronet/tests/cts/src/android/net/http/cts/CronetUrlRequestTest.java b/Cronet/tests/cts/src/android/net/http/cts/UrlRequestTest.java
similarity index 61%
rename from Cronet/tests/cts/src/android/net/http/cts/CronetUrlRequestTest.java
rename to Cronet/tests/cts/src/android/net/http/cts/UrlRequestTest.java
index 598be0e..d7d3679 100644
--- a/Cronet/tests/cts/src/android/net/http/cts/CronetUrlRequestTest.java
+++ b/Cronet/tests/cts/src/android/net/http/cts/UrlRequestTest.java
@@ -16,22 +16,22 @@
 
 package android.net.http.cts;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertNotNull;
-import static org.junit.Assert.assertTrue;
+import static android.net.http.cts.util.TestUtilsKt.assertOKStatusCode;
+import static android.net.http.cts.util.TestUtilsKt.skipIfNoInternetConnection;
+
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.greaterThan;
 
 import android.content.Context;
-import android.net.ConnectivityManager;
 import android.net.http.HttpEngine;
 import android.net.http.UrlRequest;
 import android.net.http.UrlRequest.Status;
 import android.net.http.UrlResponseInfo;
-import android.net.http.cts.util.CronetCtsTestServer;
+import android.net.http.cts.util.HttpCtsTestServer;
 import android.net.http.cts.util.TestStatusListener;
 import android.net.http.cts.util.TestUrlRequestCallback;
 import android.net.http.cts.util.TestUrlRequestCallback.ResponseStep;
 
-import androidx.annotation.NonNull;
 import androidx.test.platform.app.InstrumentationRegistry;
 import androidx.test.runner.AndroidJUnit4;
 
@@ -41,40 +41,29 @@
 import org.junit.runner.RunWith;
 
 @RunWith(AndroidJUnit4.class)
-public class CronetUrlRequestTest {
-    private static final String TAG = CronetUrlRequestTest.class.getSimpleName();
-
-    @NonNull private HttpEngine mHttpEngine;
-    @NonNull private TestUrlRequestCallback mCallback;
-    @NonNull private ConnectivityManager mCm;
-    @NonNull private CronetCtsTestServer mTestServer;
+public class UrlRequestTest {
+    private TestUrlRequestCallback mCallback;
+    private HttpCtsTestServer mTestServer;
+    private HttpEngine mHttpEngine;
 
     @Before
     public void setUp() throws Exception {
         Context context = InstrumentationRegistry.getInstrumentation().getContext();
-        mCm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
+        skipIfNoInternetConnection(context);
         HttpEngine.Builder builder = new HttpEngine.Builder(context);
-        builder.setEnableHttpCache(HttpEngine.Builder.HTTP_CACHE_IN_MEMORY, 100 * 1024)
-                .setEnableHttp2(true)
-                // .setEnableBrotli(true)
-                .setEnableQuic(true);
         mHttpEngine = builder.build();
         mCallback = new TestUrlRequestCallback();
-        mTestServer = new CronetCtsTestServer(context);
+        mTestServer = new HttpCtsTestServer(context);
     }
 
     @After
     public void tearDown() throws Exception {
-        mHttpEngine.shutdown();
-        mTestServer.shutdown();
-    }
-
-    private static void assertGreaterThan(String msg, int first, int second) {
-        assertTrue(msg + " Excepted " + first + " to be greater than " + second, first > second);
-    }
-
-    private void assertHasTestableNetworks() {
-        assertNotNull("This test requires a working Internet connection", mCm.getActiveNetwork());
+        if (mHttpEngine != null) {
+            mHttpEngine.shutdown();
+        }
+        if (mTestServer != null) {
+            mTestServer.shutdown();
+        }
     }
 
     private UrlRequest buildUrlRequest(String url) {
@@ -83,18 +72,14 @@
 
     @Test
     public void testUrlRequestGet_CompletesSuccessfully() throws Exception {
-        assertHasTestableNetworks();
         String url = mTestServer.getSuccessUrl();
         UrlRequest request = buildUrlRequest(url);
         request.start();
 
         mCallback.expectCallback(ResponseStep.ON_SUCCEEDED);
-
         UrlResponseInfo info = mCallback.mResponseInfo;
-        assertEquals(
-                "Unexpected http status code from " + url + ".", 200, info.getHttpStatusCode());
-        assertGreaterThan(
-                "Received byte from " + url + " is 0.", (int) info.getReceivedByteCount(), 0);
+        assertOKStatusCode(info);
+        assertThat("Received byte count must be > 0", info.getReceivedByteCount(), greaterThan(0L));
     }
 
     @Test
diff --git a/Cronet/tests/cts/src/android/net/http/cts/util/CronetCtsTestServer.kt b/Cronet/tests/cts/src/android/net/http/cts/util/HttpCtsTestServer.kt
similarity index 82%
rename from Cronet/tests/cts/src/android/net/http/cts/util/CronetCtsTestServer.kt
rename to Cronet/tests/cts/src/android/net/http/cts/util/HttpCtsTestServer.kt
index 3ccb571..87d5108 100644
--- a/Cronet/tests/cts/src/android/net/http/cts/util/CronetCtsTestServer.kt
+++ b/Cronet/tests/cts/src/android/net/http/cts/util/HttpCtsTestServer.kt
@@ -19,8 +19,8 @@
 import android.content.Context
 import android.webkit.cts.CtsTestServer
 
-/** Extends CtsTestServer to handle POST requests and other cronet specific test requests */
-class CronetCtsTestServer(context: Context) : CtsTestServer(context) {
+/** Extends CtsTestServer to handle POST requests and other test specific requests */
+class HttpCtsTestServer(context: Context) : CtsTestServer(context) {
 
     val successUrl: String = getAssetUrl("html/hello_world.html")
 }
diff --git a/Cronet/tests/cts/src/android/net/http/cts/util/TestUploadDataProvider.java b/Cronet/tests/cts/src/android/net/http/cts/util/TestUploadDataProvider.java
new file mode 100644
index 0000000..d047828
--- /dev/null
+++ b/Cronet/tests/cts/src/android/net/http/cts/util/TestUploadDataProvider.java
@@ -0,0 +1,294 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net.http.cts.util;
+
+import android.net.http.UploadDataProvider;
+import android.net.http.UploadDataSink;
+import android.os.ConditionVariable;
+
+import java.io.IOException;
+import java.nio.ByteBuffer;
+import java.nio.channels.ClosedChannelException;
+import java.util.ArrayList;
+import java.util.concurrent.Executor;
+import java.util.concurrent.atomic.AtomicBoolean;
+
+/** An UploadDataProvider implementation used in tests. */
+public class TestUploadDataProvider extends UploadDataProvider {
+    // Indicates whether all success callbacks are synchronous or asynchronous.
+    // Doesn't apply to errors.
+    public enum SuccessCallbackMode {
+        SYNC,
+        ASYNC
+    }
+
+    // Indicates whether failures should throw exceptions, invoke callbacks
+    // synchronously, or invoke callback asynchronously.
+    public enum FailMode {
+        NONE,
+        THROWN,
+        CALLBACK_SYNC,
+        CALLBACK_ASYNC
+    }
+
+    private final ArrayList<byte[]> mReads = new ArrayList<byte[]>();
+    private final SuccessCallbackMode mSuccessCallbackMode;
+    private final Executor mExecutor;
+
+    private boolean mChunked;
+
+    // Index of read to fail on.
+    private int mReadFailIndex = -1;
+    // Indicates how to fail on a read.
+    private FailMode mReadFailMode = FailMode.NONE;
+
+    private FailMode mRewindFailMode = FailMode.NONE;
+
+    private FailMode mLengthFailMode = FailMode.NONE;
+
+    private int mNumReadCalls;
+    private int mNumRewindCalls;
+
+    private int mNextRead;
+    private boolean mStarted;
+    private boolean mReadPending;
+    private boolean mRewindPending;
+    // Used to ensure there are no read/rewind requests after a failure.
+    private boolean mFailed;
+
+    private final AtomicBoolean mClosed = new AtomicBoolean(false);
+    private final ConditionVariable mAwaitingClose = new ConditionVariable(false);
+
+    public TestUploadDataProvider(
+            SuccessCallbackMode successCallbackMode, final Executor executor) {
+        mSuccessCallbackMode = successCallbackMode;
+        mExecutor = executor;
+    }
+
+    // Adds the result to be returned by a successful read request.  The
+    // returned bytes must all fit within the read buffer provided by Cronet.
+    // After a rewind, if there is one, all reads will be repeated.
+    public void addRead(byte[] read) {
+        if (mStarted) {
+            throw new IllegalStateException("Adding bytes after read");
+        }
+        mReads.add(read);
+    }
+
+    public void setReadFailure(int readFailIndex, FailMode readFailMode) {
+        mReadFailIndex = readFailIndex;
+        mReadFailMode = readFailMode;
+    }
+
+    public void setLengthFailure() {
+        mLengthFailMode = FailMode.THROWN;
+    }
+
+    public void setRewindFailure(FailMode rewindFailMode) {
+        mRewindFailMode = rewindFailMode;
+    }
+
+    public void setChunked(boolean chunked) {
+        mChunked = chunked;
+    }
+
+    public int getNumReadCalls() {
+        return mNumReadCalls;
+    }
+
+    public int getNumRewindCalls() {
+        return mNumRewindCalls;
+    }
+
+    /** Returns the cumulative length of all data added by calls to addRead. */
+    @Override
+    public long getLength() throws IOException {
+        if (mClosed.get()) {
+            throw new ClosedChannelException();
+        }
+        if (mLengthFailMode == FailMode.THROWN) {
+            throw new IllegalStateException("Sync length failure");
+        }
+        return getUploadedLength();
+    }
+
+    public long getUploadedLength() {
+        if (mChunked) {
+            return -1;
+        }
+        long length = 0;
+        for (byte[] read : mReads) {
+            length += read.length;
+        }
+        return length;
+    }
+
+    @Override
+    public void read(final UploadDataSink uploadDataSink, final ByteBuffer byteBuffer)
+            throws IOException {
+        int currentReadCall = mNumReadCalls;
+        ++mNumReadCalls;
+        if (mClosed.get()) {
+            throw new ClosedChannelException();
+        }
+        assertIdle();
+
+        if (maybeFailRead(currentReadCall, uploadDataSink)) {
+            mFailed = true;
+            return;
+        }
+
+        mReadPending = true;
+        mStarted = true;
+
+        final boolean finalChunk = (mChunked && mNextRead == mReads.size() - 1);
+        if (mNextRead < mReads.size()) {
+            if ((byteBuffer.limit() - byteBuffer.position()) < mReads.get(mNextRead).length) {
+                throw new IllegalStateException("Read buffer smaller than expected.");
+            }
+            byteBuffer.put(mReads.get(mNextRead));
+            ++mNextRead;
+        } else {
+            throw new IllegalStateException("Too many reads: " + mNextRead);
+        }
+
+        Runnable completeRunnable =
+                new Runnable() {
+                    @Override
+                    public void run() {
+                        mReadPending = false;
+                        uploadDataSink.onReadSucceeded(finalChunk);
+                    }
+                };
+        if (mSuccessCallbackMode == SuccessCallbackMode.SYNC) {
+            completeRunnable.run();
+        } else {
+            mExecutor.execute(completeRunnable);
+        }
+    }
+
+    @Override
+    public void rewind(final UploadDataSink uploadDataSink) throws IOException {
+        ++mNumRewindCalls;
+        if (mClosed.get()) {
+            throw new ClosedChannelException();
+        }
+        assertIdle();
+
+        if (maybeFailRewind(uploadDataSink)) {
+            mFailed = true;
+            return;
+        }
+
+        if (mNextRead == 0) {
+            // Should never try and rewind when rewinding does nothing.
+            throw new IllegalStateException("Unexpected rewind when already at beginning");
+        }
+
+        mRewindPending = true;
+        mNextRead = 0;
+
+        Runnable completeRunnable =
+                new Runnable() {
+                    @Override
+                    public void run() {
+                        mRewindPending = false;
+                        uploadDataSink.onRewindSucceeded();
+                    }
+                };
+        if (mSuccessCallbackMode == SuccessCallbackMode.SYNC) {
+            completeRunnable.run();
+        } else {
+            mExecutor.execute(completeRunnable);
+        }
+    }
+
+    private void assertIdle() {
+        if (mReadPending) {
+            throw new IllegalStateException("Unexpected operation during read");
+        }
+        if (mRewindPending) {
+            throw new IllegalStateException("Unexpected operation during rewind");
+        }
+        if (mFailed) {
+            throw new IllegalStateException("Unexpected operation after failure");
+        }
+    }
+
+    private boolean maybeFailRead(int readIndex, final UploadDataSink uploadDataSink) {
+        if (readIndex != mReadFailIndex) return false;
+
+        switch (mReadFailMode) {
+            case THROWN:
+                throw new IllegalStateException("Thrown read failure");
+            case CALLBACK_SYNC:
+                uploadDataSink.onReadError(new IllegalStateException("Sync read failure"));
+                return true;
+            case CALLBACK_ASYNC:
+                Runnable errorRunnable =
+                        new Runnable() {
+                            @Override
+                            public void run() {
+                                uploadDataSink.onReadError(
+                                        new IllegalStateException("Async read failure"));
+                            }
+                        };
+                mExecutor.execute(errorRunnable);
+                return true;
+            default:
+                return false;
+        }
+    }
+
+    private boolean maybeFailRewind(final UploadDataSink uploadDataSink) {
+        switch (mRewindFailMode) {
+            case THROWN:
+                throw new IllegalStateException("Thrown rewind failure");
+            case CALLBACK_SYNC:
+                uploadDataSink.onRewindError(new IllegalStateException("Sync rewind failure"));
+                return true;
+            case CALLBACK_ASYNC:
+                Runnable errorRunnable =
+                        new Runnable() {
+                            @Override
+                            public void run() {
+                                uploadDataSink.onRewindError(
+                                        new IllegalStateException("Async rewind failure"));
+                            }
+                        };
+                mExecutor.execute(errorRunnable);
+                return true;
+            default:
+                return false;
+        }
+    }
+
+    @Override
+    public void close() throws IOException {
+        if (!mClosed.compareAndSet(false, true)) {
+            throw new AssertionError("Closed twice");
+        }
+        mAwaitingClose.open();
+    }
+
+    public void assertClosed() {
+        mAwaitingClose.block(5000);
+        if (!mClosed.get()) {
+            throw new AssertionError("Was not closed");
+        }
+    }
+}
diff --git a/Cronet/tests/cts/src/android/net/http/cts/util/TestUtils.kt b/Cronet/tests/cts/src/android/net/http/cts/util/TestUtils.kt
new file mode 100644
index 0000000..d30c059
--- /dev/null
+++ b/Cronet/tests/cts/src/android/net/http/cts/util/TestUtils.kt
@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net.http.cts.util
+
+import android.content.Context
+import android.net.ConnectivityManager
+import android.net.http.UrlResponseInfo
+import org.junit.Assert.assertEquals
+import org.junit.Assume.assumeNotNull
+
+fun skipIfNoInternetConnection(context: Context) {
+    val connectivityManager = context.getSystemService(ConnectivityManager::class.java)
+    assumeNotNull(
+        "This test requires a working Internet connection", connectivityManager.getActiveNetwork())
+}
+
+fun assertOKStatusCode(info: UrlResponseInfo) {
+    assertEquals("Status code must be 200 OK", 200, info.getHttpStatusCode())
+}
diff --git a/OWNERS_core_networking b/OWNERS_core_networking
index 172670e..6d17476 100644
--- a/OWNERS_core_networking
+++ b/OWNERS_core_networking
@@ -1,4 +1,3 @@
-chenbruce@google.com
 chiachangwang@google.com
 cken@google.com
 huangaaron@google.com
diff --git a/TEST_MAPPING b/TEST_MAPPING
index 700a085..a1e81c8 100644
--- a/TEST_MAPPING
+++ b/TEST_MAPPING
@@ -64,6 +64,9 @@
       "name": "connectivity_native_test"
     },
     {
+      "name": "CtsNetHttpTestCases"
+    },
+    {
       "name": "libclat_test"
     },
     {
diff --git a/Tethering/AndroidManifest.xml b/Tethering/AndroidManifest.xml
index b832e16..23467e7 100644
--- a/Tethering/AndroidManifest.xml
+++ b/Tethering/AndroidManifest.xml
@@ -43,7 +43,9 @@
     <uses-permission android:name="android.permission.WRITE_SETTINGS" />
     <uses-permission android:name="android.permission.POST_NOTIFICATIONS"/>
 
+    <!-- Sending non-protected broadcast from system uid is not allowed. -->
     <protected-broadcast android:name="com.android.server.connectivity.tethering.DISABLE_TETHERING" />
+    <protected-broadcast android:name="com.android.server.connectivity.KeepaliveTracker.TCP_POLLING_ALARM" />
 
     <application
         android:process="com.android.networkstack.process"
diff --git a/Tethering/apex/Android.bp b/Tethering/apex/Android.bp
index b26911c..31fd645 100644
--- a/Tethering/apex/Android.bp
+++ b/Tethering/apex/Android.bp
@@ -36,16 +36,16 @@
 // different value depending on the branch.
 java_defaults {
     name: "ConnectivityNextEnableDefaults",
-    enabled: true,
+    enabled: false,
 }
 apex_defaults {
     name: "ConnectivityApexDefaults",
     // Tethering app to include in the AOSP apex. Branches that disable the "next" targets may use
     // a stable tethering app instead, but will generally override the AOSP apex to use updatable
     // package names and keys, so that apex will be unused anyway.
-    apps: ["TetheringNext"], // Replace to "Tethering" if ConnectivityNextEnableDefaults is false.
+    apps: ["Tethering"], // Replace to "Tethering" if ConnectivityNextEnableDefaults is false.
 }
-enable_tethering_next_apex = true
+enable_tethering_next_apex = false
 // This is a placeholder comment to avoid merge conflicts
 // as the above target may have different "enabled" values
 // depending on the branch
@@ -54,7 +54,7 @@
 // enables or disables inclusion of Cronet in the Tethering apex. This is used to disable Cronet
 // on tm-mainline-prod. Note: in order for Cronet APIs to work Cronet must also be enabled
 // by the cronet_java_*_defaults in common/TetheringLib/Android.bp.
-cronet_in_tethering_apex_defaults = "CronetInTetheringApexDefaultsEnabled"
+cronet_in_tethering_apex_defaults = "CronetInTetheringApexDefaultsDisabled"
 // This is a placeholder comment to avoid merge conflicts
 // as cronet_apex_defaults may have different values
 // depending on the branch
diff --git a/Tethering/common/TetheringLib/Android.bp b/Tethering/common/TetheringLib/Android.bp
index cbdf0c0..7e9e868 100644
--- a/Tethering/common/TetheringLib/Android.bp
+++ b/Tethering/common/TetheringLib/Android.bp
@@ -21,16 +21,8 @@
 // specify a java_defaults target that either enables or disables Cronet. This
 // is used to disable Cronet on tm-mainline-prod.
 // Note: they must either both be enabled or disabled.
-cronet_java_defaults = "CronetJavaDefaultsEnabled"
-cronet_java_prejarjar_defaults = "CronetJavaPrejarjarDefaultsEnabled"
-// This is a placeholder comment to avoid merge conflicts
-// as cronet_defaults may have different values
-// depending on the branch
-
-// cronet_java_defaults_enabled_srcs is used to specify the srcs of CronetJavaDefaultsEnabled
-// This is required until the external/cronet is auto-merged to tm-mainline-prod and
-// :cronet_aml_api_sources is available
-cronet_java_defaults_enabled_srcs = [":cronet_aml_api_sources"]
+cronet_java_defaults = "CronetJavaDefaultsDisabled"
+cronet_java_prejarjar_defaults = "CronetJavaPrejarjarDefaultsDisabled"
 // This is a placeholder comment to avoid merge conflicts
 // as cronet_defaults may have different values
 // depending on the branch
@@ -82,7 +74,7 @@
 
 java_defaults {
     name: "CronetJavaDefaultsEnabled",
-    srcs: cronet_java_defaults_enabled_srcs,
+    srcs: [":cronet_aml_api_sources"],
     libs: [
         "androidx.annotation_annotation",
     ],
diff --git a/Tethering/tests/unit/src/com/android/networkstack/tethering/TetheringTest.java b/Tethering/tests/unit/src/com/android/networkstack/tethering/TetheringTest.java
index 63702f2..f90b3a4 100644
--- a/Tethering/tests/unit/src/com/android/networkstack/tethering/TetheringTest.java
+++ b/Tethering/tests/unit/src/com/android/networkstack/tethering/TetheringTest.java
@@ -1802,7 +1802,7 @@
             TestNetworkAgent mobile, TestNetworkAgent wifi, TestNetworkAgent dun) throws Exception {
         final NetworkCallback dunNetworkCallback = setupDunUpstreamTest(automatic, inOrder);
 
-        // Pretend cellular connected and expect the upstream to be set.
+        // Pretend cellular connected and expect the upstream to be not set.
         mobile.fakeConnect();
         mCm.makeDefaultNetwork(mobile, BROADCAST_FIRST);
         mLooper.dispatchAll();
diff --git a/bpf_progs/bpf_net_helpers.h b/bpf_progs/bpf_net_helpers.h
index c39269e..b7ca3af 100644
--- a/bpf_progs/bpf_net_helpers.h
+++ b/bpf_progs/bpf_net_helpers.h
@@ -21,6 +21,18 @@
 #include <stdbool.h>
 #include <stdint.h>
 
+// bionic kernel uapi linux/udp.h header is munged...
+#define __kernel_udphdr udphdr
+#include <linux/udp.h>
+
+// Offsets from beginning of L4 (TCP/UDP) header
+#define TCP_OFFSET(field) offsetof(struct tcphdr, field)
+#define UDP_OFFSET(field) offsetof(struct udphdr, field)
+
+// Offsets from beginning of L3 (IPv4/IPv6) header
+#define IP4_OFFSET(field) offsetof(struct iphdr, field)
+#define IP6_OFFSET(field) offsetof(struct ipv6hdr, field)
+
 // this returns 0 iff skb->sk is NULL
 static uint64_t (*bpf_get_socket_cookie)(struct __sk_buff* skb) = (void*)BPF_FUNC_get_socket_cookie;
 
diff --git a/bpf_progs/netd.c b/bpf_progs/netd.c
index 43920d0..84da79d 100644
--- a/bpf_progs/netd.c
+++ b/bpf_progs/netd.c
@@ -46,8 +46,9 @@
 static const bool INGRESS = false;
 static const bool EGRESS = true;
 
-#define IP_PROTO_OFF offsetof(struct iphdr, protocol)
-#define IPV6_PROTO_OFF offsetof(struct ipv6hdr, nexthdr)
+// Used for 'bool enable_tracing'
+static const bool TRACE_ON = true;
+static const bool TRACE_OFF = false;
 
 // offsetof(struct iphdr, ihl) -- but that's a bitfield
 #define IPPROTO_IHL_OFF 0
@@ -60,14 +61,18 @@
 #define TCP_FLAG32_OFF 12
 
 // For maps netd does not need to access
-#define DEFINE_BPF_MAP_NO_NETD(the_map, TYPE, TypeOfKey, TypeOfValue, num_entries) \
-    DEFINE_BPF_MAP_EXT(the_map, TYPE, TypeOfKey, TypeOfValue, num_entries, \
-                       AID_ROOT, AID_NET_BW_ACCT, 0060, "fs_bpf_net_shared", "", false)
+#define DEFINE_BPF_MAP_NO_NETD(the_map, TYPE, TypeOfKey, TypeOfValue, num_entries)      \
+    DEFINE_BPF_MAP_EXT(the_map, TYPE, TypeOfKey, TypeOfValue, num_entries,              \
+                       AID_ROOT, AID_NET_BW_ACCT, 0060, "fs_bpf_net_shared", "", false, \
+                       BPFLOADER_MIN_VER, BPFLOADER_MAX_VER, /*ignore_on_eng*/false,       \
+                       /*ignore_on_user*/false, /*ignore_on_userdebug*/false)
 
 // For maps netd only needs read only access to
-#define DEFINE_BPF_MAP_RO_NETD(the_map, TYPE, TypeOfKey, TypeOfValue, num_entries) \
-    DEFINE_BPF_MAP_EXT(the_map, TYPE, TypeOfKey, TypeOfValue, num_entries, \
-                       AID_ROOT, AID_NET_BW_ACCT, 0460, "fs_bpf_netd_readonly", "", false)
+#define DEFINE_BPF_MAP_RO_NETD(the_map, TYPE, TypeOfKey, TypeOfValue, num_entries)         \
+    DEFINE_BPF_MAP_EXT(the_map, TYPE, TypeOfKey, TypeOfValue, num_entries,                 \
+                       AID_ROOT, AID_NET_BW_ACCT, 0460, "fs_bpf_netd_readonly", "", false, \
+                       BPFLOADER_MIN_VER, BPFLOADER_MAX_VER, /*ignore_on_eng*/false,       \
+                       /*ignore_on_user*/false, /*ignore_on_userdebug*/false)
 
 // For maps netd needs to be able to read and write
 #define DEFINE_BPF_MAP_RW_NETD(the_map, TYPE, TypeOfKey, TypeOfValue, num_entries) \
@@ -95,6 +100,19 @@
 /* never actually used from ebpf */
 DEFINE_BPF_MAP_NO_NETD(iface_index_name_map, HASH, uint32_t, IfaceValue, IFACE_INDEX_NAME_MAP_SIZE)
 
+// A single-element configuration array, packet tracing is enabled when 'true'.
+DEFINE_BPF_MAP_EXT(packet_trace_enabled_map, ARRAY, uint32_t, bool, 1,
+                   AID_ROOT, AID_SYSTEM, 0060, "fs_bpf_net_shared", "", false,
+                   BPFLOADER_IGNORED_ON_VERSION, BPFLOADER_MAX_VER, /*ignore_on_eng*/false,
+                   /*ignore_on_user*/true, /*ignore_on_userdebug*/false)
+
+// A ring buffer on which packet information is pushed. This map will only be loaded
+// on eng and userdebug devices. User devices won't load this to save memory.
+DEFINE_BPF_RINGBUF_EXT(packet_trace_ringbuf, PacketTrace, PACKET_TRACE_BUF_SIZE,
+                       AID_ROOT, AID_SYSTEM, 0060, "fs_bpf_net_shared", "", false,
+                       BPFLOADER_IGNORED_ON_VERSION, BPFLOADER_MAX_VER, /*ignore_on_eng*/false,
+                       /*ignore_on_user*/true, /*ignore_on_userdebug*/false);
+
 // iptables xt_bpf programs need to be usable by both netd and netutils_wrappers
 // selinux contexts, because even non-xt_bpf iptables mutations are implemented as
 // a full table dump, followed by an update in userspace, and then a reload into the kernel,
@@ -222,12 +240,72 @@
         : bpf_skb_load_bytes(skb, L3_off, to, len);
 }
 
+static __always_inline inline void do_packet_tracing(
+        const struct __sk_buff* const skb, const bool egress, const uint32_t uid,
+        const uint32_t tag, const bool enable_tracing, const unsigned kver) {
+    if (!enable_tracing) return;
+    if (kver < KVER(5, 8, 0)) return;
+
+    uint32_t mapKey = 0;
+    bool* traceConfig = bpf_packet_trace_enabled_map_lookup_elem(&mapKey);
+    if (traceConfig == NULL) return;
+    if (*traceConfig == false) return;
+
+    PacketTrace* pkt = bpf_packet_trace_ringbuf_reserve();
+    if (pkt == NULL) return;
+
+    // Errors from bpf_skb_load_bytes_net are ignored to favor returning something
+    // over returning nothing. In the event of an error, the kernel will fill in
+    // zero for the destination memory. Do not change the default '= 0' below.
+
+    uint8_t proto = 0;
+    uint8_t L4_off = 0;
+    uint8_t ipVersion = 0;
+    if (skb->protocol == htons(ETH_P_IP)) {
+        (void)bpf_skb_load_bytes_net(skb, IP4_OFFSET(protocol), &proto, sizeof(proto), kver);
+        (void)bpf_skb_load_bytes_net(skb, IPPROTO_IHL_OFF, &L4_off, sizeof(L4_off), kver);
+        L4_off = (L4_off & 0x0F) * 4;  // IHL calculation.
+        ipVersion = 4;
+    } else if (skb->protocol == htons(ETH_P_IPV6)) {
+        (void)bpf_skb_load_bytes_net(skb, IP6_OFFSET(nexthdr), &proto, sizeof(proto), kver);
+        L4_off = sizeof(struct ipv6hdr);
+        ipVersion = 6;
+    }
+
+    uint8_t flags = 0;
+    __be16 sport = 0, dport = 0;
+    if (proto == IPPROTO_TCP && L4_off >= 20) {
+        (void)bpf_skb_load_bytes_net(skb, L4_off + TCP_FLAG32_OFF + 1, &flags, sizeof(flags), kver);
+        (void)bpf_skb_load_bytes_net(skb, L4_off + TCP_OFFSET(source), &sport, sizeof(sport), kver);
+        (void)bpf_skb_load_bytes_net(skb, L4_off + TCP_OFFSET(dest), &dport, sizeof(dport), kver);
+    } else if (proto == IPPROTO_UDP && L4_off >= 20) {
+        (void)bpf_skb_load_bytes_net(skb, L4_off + UDP_OFFSET(source), &sport, sizeof(sport), kver);
+        (void)bpf_skb_load_bytes_net(skb, L4_off + UDP_OFFSET(dest), &dport, sizeof(dport), kver);
+    }
+
+    pkt->timestampNs = bpf_ktime_get_boot_ns();
+    pkt->ifindex = skb->ifindex;
+    pkt->length = skb->len;
+
+    pkt->uid = uid;
+    pkt->tag = tag;
+    pkt->sport = sport;
+    pkt->dport = dport;
+
+    pkt->egress = egress;
+    pkt->ipProto = proto;
+    pkt->tcpFlags = flags;
+    pkt->ipVersion = ipVersion;
+
+    bpf_packet_trace_ringbuf_submit(pkt);
+}
+
 static __always_inline inline bool skip_owner_match(struct __sk_buff* skb, const unsigned kver) {
     uint32_t flag = 0;
     if (skb->protocol == htons(ETH_P_IP)) {
         uint8_t proto;
         // no need to check for success, proto will be zeroed if bpf_skb_load_bytes_net() fails
-        (void)bpf_skb_load_bytes_net(skb, IP_PROTO_OFF, &proto, sizeof(proto), kver);
+        (void)bpf_skb_load_bytes_net(skb, IP4_OFFSET(protocol), &proto, sizeof(proto), kver);
         if (proto == IPPROTO_ESP) return true;
         if (proto != IPPROTO_TCP) return false;  // handles read failure above
         uint8_t ihl;
@@ -243,7 +321,7 @@
     } else if (skb->protocol == htons(ETH_P_IPV6)) {
         uint8_t proto;
         // no need to check for success, proto will be zeroed if bpf_skb_load_bytes_net() fails
-        (void)bpf_skb_load_bytes_net(skb, IPV6_PROTO_OFF, &proto, sizeof(proto), kver);
+        (void)bpf_skb_load_bytes_net(skb, IP6_OFFSET(nexthdr), &proto, sizeof(proto), kver);
         if (proto == IPPROTO_ESP) return true;
         if (proto != IPPROTO_TCP) return false;  // handles read failure above
         // if the read below fails, we'll just assume no TCP flags are set, which is fine.
@@ -315,6 +393,7 @@
 }
 
 static __always_inline inline int bpf_traffic_account(struct __sk_buff* skb, bool egress,
+                                                      const bool enable_tracing,
                                                       const unsigned kver) {
     uint32_t sock_uid = bpf_get_socket_uid(skb);
     uint64_t cookie = bpf_get_socket_cookie(skb);
@@ -374,34 +453,51 @@
         key.tag = 0;
     }
 
+    do_packet_tracing(skb, egress, uid, tag, enable_tracing, kver);
     update_stats_with_config(skb, egress, &key, *selectedMap);
     update_app_uid_stats_map(skb, egress, &uid);
     asm("%0 &= 1" : "+r"(match));
     return match;
 }
 
+DEFINE_BPF_PROG_EXT("cgroupskb/ingress/stats$trace", AID_ROOT, AID_SYSTEM,
+                    bpf_cgroup_ingress_trace, KVER(5, 8, 0), KVER_INF,
+                    BPFLOADER_IGNORED_ON_VERSION, BPFLOADER_MAX_VER, false,
+                    "fs_bpf_netd_readonly", "", false, true, false)
+(struct __sk_buff* skb) {
+    return bpf_traffic_account(skb, INGRESS, TRACE_ON, KVER(5, 8, 0));
+}
+
 DEFINE_NETD_BPF_PROG_KVER_RANGE("cgroupskb/ingress/stats$4_19", AID_ROOT, AID_SYSTEM,
                                 bpf_cgroup_ingress_4_19, KVER(4, 19, 0), KVER_INF)
 (struct __sk_buff* skb) {
-    return bpf_traffic_account(skb, INGRESS, KVER(4, 19, 0));
+    return bpf_traffic_account(skb, INGRESS, TRACE_OFF, KVER(4, 19, 0));
 }
 
 DEFINE_NETD_BPF_PROG_KVER_RANGE("cgroupskb/ingress/stats$4_14", AID_ROOT, AID_SYSTEM,
                                 bpf_cgroup_ingress_4_14, KVER_NONE, KVER(4, 19, 0))
 (struct __sk_buff* skb) {
-    return bpf_traffic_account(skb, INGRESS, KVER_NONE);
+    return bpf_traffic_account(skb, INGRESS, TRACE_OFF, KVER_NONE);
+}
+
+DEFINE_BPF_PROG_EXT("cgroupskb/egress/stats$trace", AID_ROOT, AID_SYSTEM,
+                    bpf_cgroup_egress_trace, KVER(5, 8, 0), KVER_INF,
+                    BPFLOADER_IGNORED_ON_VERSION, BPFLOADER_MAX_VER, false,
+                    "fs_bpf_netd_readonly", "", false, true, false)
+(struct __sk_buff* skb) {
+    return bpf_traffic_account(skb, EGRESS, TRACE_ON, KVER(5, 8, 0));
 }
 
 DEFINE_NETD_BPF_PROG_KVER_RANGE("cgroupskb/egress/stats$4_19", AID_ROOT, AID_SYSTEM,
                                 bpf_cgroup_egress_4_19, KVER(4, 19, 0), KVER_INF)
 (struct __sk_buff* skb) {
-    return bpf_traffic_account(skb, EGRESS, KVER(4, 19, 0));
+    return bpf_traffic_account(skb, EGRESS, TRACE_OFF, KVER(4, 19, 0));
 }
 
 DEFINE_NETD_BPF_PROG_KVER_RANGE("cgroupskb/egress/stats$4_14", AID_ROOT, AID_SYSTEM,
                                 bpf_cgroup_egress_4_14, KVER_NONE, KVER(4, 19, 0))
 (struct __sk_buff* skb) {
-    return bpf_traffic_account(skb, EGRESS, KVER_NONE);
+    return bpf_traffic_account(skb, EGRESS, TRACE_OFF, KVER_NONE);
 }
 
 // WARNING: Android T's non-updatable netd depends on the name of this program.
diff --git a/bpf_progs/netd.h b/bpf_progs/netd.h
index cc88680..be604f9 100644
--- a/bpf_progs/netd.h
+++ b/bpf_progs/netd.h
@@ -69,6 +69,24 @@
     uint64_t tcpTxPackets;
 } Stats;
 
+typedef struct {
+  uint64_t timestampNs;
+  uint32_t ifindex;
+  uint32_t length;
+
+  uint32_t uid;
+  uint32_t tag;
+
+  __be16 sport;
+  __be16 dport;
+
+  bool egress;
+  uint8_t ipProto;
+  uint8_t tcpFlags;
+  uint8_t ipVersion; // 4=IPv4, 6=IPv6, 0=unknown
+} PacketTrace;
+STRUCT_SIZE(PacketTrace, 8+4+4 + 4+4 + 2+2 + 1+1+1+1);
+
 // Since we cannot garbage collect the stats map since device boot, we need to make these maps as
 // large as possible. The maximum size of number of map entries we can have is depend on the rlimit
 // of MEM_LOCK granted to netd. The memory space needed by each map can be calculated by the
@@ -87,7 +105,8 @@
 // dozable_uid_map:     key:  4 bytes, value:  1 bytes, cost:  145216 bytes    =   145Kbytes
 // standby_uid_map:     key:  4 bytes, value:  1 bytes, cost:  145216 bytes    =   145Kbytes
 // powersave_uid_map:   key:  4 bytes, value:  1 bytes, cost:  145216 bytes    =   145Kbytes
-// total:                                                                         4930Kbytes
+// packet_trace_ringbuf:key:  0 bytes, value: 24 bytes, cost:   32768 bytes    =    32Kbytes
+// total:                                                                         4962Kbytes
 // It takes maximum 4.9MB kernel memory space if all maps are full, which requires any devices
 // running this module to have a memlock rlimit to be larger then 5MB. In the old qtaguid module,
 // we don't have a total limit for data entries but only have limitation of tags each uid can have.
@@ -102,6 +121,7 @@
 static const int IFACE_STATS_MAP_SIZE = 1000;
 static const int CONFIGURATION_MAP_SIZE = 2;
 static const int UID_OWNER_MAP_SIZE = 4000;
+static const int PACKET_TRACE_BUF_SIZE = 32 * 1024;
 
 #ifdef __cplusplus
 
@@ -145,6 +165,8 @@
 #define CONFIGURATION_MAP_PATH BPF_NETD_PATH "map_netd_configuration_map"
 #define UID_OWNER_MAP_PATH BPF_NETD_PATH "map_netd_uid_owner_map"
 #define UID_PERMISSION_MAP_PATH BPF_NETD_PATH "map_netd_uid_permission_map"
+#define PACKET_TRACE_RINGBUF_PATH BPF_NETD_PATH "map_netd_packet_trace_ringbuf"
+#define PACKET_TRACE_ENABLED_MAP_PATH BPF_NETD_PATH "map_netd_packet_trace_enabled_map"
 
 #endif // __cplusplus
 
diff --git a/framework-t/api/current.txt b/framework-t/api/current.txt
index eb77288..5532853 100644
--- a/framework-t/api/current.txt
+++ b/framework-t/api/current.txt
@@ -192,15 +192,20 @@
     method @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE) public void discoverServices(@NonNull String, int, @NonNull android.net.NetworkRequest, @NonNull java.util.concurrent.Executor, @NonNull android.net.nsd.NsdManager.DiscoveryListener);
     method public void registerService(android.net.nsd.NsdServiceInfo, int, android.net.nsd.NsdManager.RegistrationListener);
     method public void registerService(@NonNull android.net.nsd.NsdServiceInfo, int, @NonNull java.util.concurrent.Executor, @NonNull android.net.nsd.NsdManager.RegistrationListener);
-    method public void resolveService(android.net.nsd.NsdServiceInfo, android.net.nsd.NsdManager.ResolveListener);
-    method public void resolveService(@NonNull android.net.nsd.NsdServiceInfo, @NonNull java.util.concurrent.Executor, @NonNull android.net.nsd.NsdManager.ResolveListener);
+    method public void registerServiceInfoCallback(@NonNull android.net.nsd.NsdServiceInfo, @NonNull java.util.concurrent.Executor, @NonNull android.net.nsd.NsdManager.ServiceInfoCallback);
+    method @Deprecated public void resolveService(android.net.nsd.NsdServiceInfo, android.net.nsd.NsdManager.ResolveListener);
+    method @Deprecated public void resolveService(@NonNull android.net.nsd.NsdServiceInfo, @NonNull java.util.concurrent.Executor, @NonNull android.net.nsd.NsdManager.ResolveListener);
     method public void stopServiceDiscovery(android.net.nsd.NsdManager.DiscoveryListener);
+    method public void stopServiceResolution(@NonNull android.net.nsd.NsdManager.ResolveListener);
     method public void unregisterService(android.net.nsd.NsdManager.RegistrationListener);
+    method public void unregisterServiceInfoCallback(@NonNull android.net.nsd.NsdManager.ServiceInfoCallback);
     field public static final String ACTION_NSD_STATE_CHANGED = "android.net.nsd.STATE_CHANGED";
     field public static final String EXTRA_NSD_STATE = "nsd_state";
     field public static final int FAILURE_ALREADY_ACTIVE = 3; // 0x3
+    field public static final int FAILURE_BAD_PARAMETERS = 6; // 0x6
     field public static final int FAILURE_INTERNAL_ERROR = 0; // 0x0
     field public static final int FAILURE_MAX_LIMIT = 4; // 0x4
+    field public static final int FAILURE_OPERATION_NOT_RUNNING = 5; // 0x5
     field public static final int NSD_STATE_DISABLED = 1; // 0x1
     field public static final int NSD_STATE_ENABLED = 2; // 0x2
     field public static final int PROTOCOL_DNS_SD = 1; // 0x1
@@ -224,21 +229,32 @@
 
   public static interface NsdManager.ResolveListener {
     method public void onResolveFailed(android.net.nsd.NsdServiceInfo, int);
+    method public default void onResolveStopped(@NonNull android.net.nsd.NsdServiceInfo);
     method public void onServiceResolved(android.net.nsd.NsdServiceInfo);
+    method public default void onStopResolutionFailed(@NonNull android.net.nsd.NsdServiceInfo, int);
+  }
+
+  public static interface NsdManager.ServiceInfoCallback {
+    method public void onServiceInfoCallbackRegistrationFailed(int);
+    method public void onServiceInfoCallbackUnregistered();
+    method public void onServiceLost();
+    method public void onServiceUpdated(@NonNull android.net.nsd.NsdServiceInfo);
   }
 
   public final class NsdServiceInfo implements android.os.Parcelable {
     ctor public NsdServiceInfo();
     method public int describeContents();
     method public java.util.Map<java.lang.String,byte[]> getAttributes();
-    method public java.net.InetAddress getHost();
+    method @Deprecated public java.net.InetAddress getHost();
+    method @NonNull public java.util.List<java.net.InetAddress> getHostAddresses();
     method @Nullable public android.net.Network getNetwork();
     method public int getPort();
     method public String getServiceName();
     method public String getServiceType();
     method public void removeAttribute(String);
     method public void setAttribute(String, String);
-    method public void setHost(java.net.InetAddress);
+    method @Deprecated public void setHost(java.net.InetAddress);
+    method public void setHostAddresses(@NonNull java.util.List<java.net.InetAddress>);
     method public void setNetwork(@Nullable android.net.Network);
     method public void setPort(int);
     method public void setServiceName(String);
diff --git a/framework-t/src/android/net/nsd/INsdManagerCallback.aidl b/framework-t/src/android/net/nsd/INsdManagerCallback.aidl
index 1a262ec..d89bfa9 100644
--- a/framework-t/src/android/net/nsd/INsdManagerCallback.aidl
+++ b/framework-t/src/android/net/nsd/INsdManagerCallback.aidl
@@ -36,4 +36,10 @@
     void onUnregisterServiceSucceeded(int listenerKey);
     void onResolveServiceFailed(int listenerKey, int error);
     void onResolveServiceSucceeded(int listenerKey, in NsdServiceInfo info);
+    void onStopResolutionFailed(int listenerKey, int error);
+    void onStopResolutionSucceeded(int listenerKey);
+    void onServiceInfoCallbackRegistrationFailed(int listenerKey, int error);
+    void onServiceUpdated(int listenerKey, in NsdServiceInfo info);
+    void onServiceUpdatedLost(int listenerKey);
+    void onServiceInfoCallbackUnregistered(int listenerKey);
 }
diff --git a/framework-t/src/android/net/nsd/INsdServiceConnector.aidl b/framework-t/src/android/net/nsd/INsdServiceConnector.aidl
index b06ae55..5533154 100644
--- a/framework-t/src/android/net/nsd/INsdServiceConnector.aidl
+++ b/framework-t/src/android/net/nsd/INsdServiceConnector.aidl
@@ -32,4 +32,7 @@
     void stopDiscovery(int listenerKey);
     void resolveService(int listenerKey, in NsdServiceInfo serviceInfo);
     void startDaemon();
+    void stopResolution(int listenerKey);
+    void registerServiceInfoCallback(int listenerKey, in NsdServiceInfo serviceInfo);
+    void unregisterServiceInfoCallback(int listenerKey);
 }
\ No newline at end of file
diff --git a/framework-t/src/android/net/nsd/NsdManager.java b/framework-t/src/android/net/nsd/NsdManager.java
index 45def36..122e3a0 100644
--- a/framework-t/src/android/net/nsd/NsdManager.java
+++ b/framework-t/src/android/net/nsd/NsdManager.java
@@ -16,6 +16,7 @@
 
 package android.net.nsd;
 
+import android.annotation.IntDef;
 import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.annotation.RequiresPermission;
@@ -44,6 +45,8 @@
 import com.android.internal.annotations.GuardedBy;
 import com.android.internal.annotations.VisibleForTesting;
 
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
 import java.util.Objects;
 import java.util.concurrent.Executor;
 
@@ -230,7 +233,6 @@
 
     /** @hide */
     public static final int DAEMON_CLEANUP                          = 18;
-
     /** @hide */
     public static final int DAEMON_STARTUP                          = 19;
 
@@ -245,6 +247,27 @@
     /** @hide */
     public static final int MDNS_DISCOVERY_MANAGER_EVENT            = 23;
 
+    /** @hide */
+    public static final int STOP_RESOLUTION                         = 24;
+    /** @hide */
+    public static final int STOP_RESOLUTION_FAILED                  = 25;
+    /** @hide */
+    public static final int STOP_RESOLUTION_SUCCEEDED               = 26;
+
+    /** @hide */
+    public static final int REGISTER_SERVICE_CALLBACK               = 27;
+    /** @hide */
+    public static final int REGISTER_SERVICE_CALLBACK_FAILED        = 28;
+    /** @hide */
+    public static final int SERVICE_UPDATED                         = 29;
+    /** @hide */
+    public static final int SERVICE_UPDATED_LOST                    = 30;
+
+    /** @hide */
+    public static final int UNREGISTER_SERVICE_CALLBACK             = 31;
+    /** @hide */
+    public static final int UNREGISTER_SERVICE_CALLBACK_SUCCEEDED   = 32;
+
     /** Dns based service discovery protocol */
     public static final int PROTOCOL_DNS_SD = 0x0001;
 
@@ -270,6 +293,15 @@
         EVENT_NAMES.put(DAEMON_CLEANUP, "DAEMON_CLEANUP");
         EVENT_NAMES.put(DAEMON_STARTUP, "DAEMON_STARTUP");
         EVENT_NAMES.put(MDNS_SERVICE_EVENT, "MDNS_SERVICE_EVENT");
+        EVENT_NAMES.put(STOP_RESOLUTION, "STOP_RESOLUTION");
+        EVENT_NAMES.put(STOP_RESOLUTION_FAILED, "STOP_RESOLUTION_FAILED");
+        EVENT_NAMES.put(STOP_RESOLUTION_SUCCEEDED, "STOP_RESOLUTION_SUCCEEDED");
+        EVENT_NAMES.put(REGISTER_SERVICE_CALLBACK, "REGISTER_SERVICE_CALLBACK");
+        EVENT_NAMES.put(REGISTER_SERVICE_CALLBACK_FAILED, "REGISTER_SERVICE_CALLBACK_FAILED");
+        EVENT_NAMES.put(SERVICE_UPDATED, "SERVICE_UPDATED");
+        EVENT_NAMES.put(UNREGISTER_SERVICE_CALLBACK, "UNREGISTER_SERVICE_CALLBACK");
+        EVENT_NAMES.put(UNREGISTER_SERVICE_CALLBACK_SUCCEEDED,
+                "UNREGISTER_SERVICE_CALLBACK_SUCCEEDED");
     }
 
     /** @hide */
@@ -595,6 +627,36 @@
         public void onResolveServiceSucceeded(int listenerKey, NsdServiceInfo info) {
             sendInfo(RESOLVE_SERVICE_SUCCEEDED, listenerKey, info);
         }
+
+        @Override
+        public void onStopResolutionFailed(int listenerKey, int error) {
+            sendError(STOP_RESOLUTION_FAILED, listenerKey, error);
+        }
+
+        @Override
+        public void onStopResolutionSucceeded(int listenerKey) {
+            sendNoArg(STOP_RESOLUTION_SUCCEEDED, listenerKey);
+        }
+
+        @Override
+        public void onServiceInfoCallbackRegistrationFailed(int listenerKey, int error) {
+            sendError(REGISTER_SERVICE_CALLBACK_FAILED, listenerKey, error);
+        }
+
+        @Override
+        public void onServiceUpdated(int listenerKey, NsdServiceInfo info) {
+            sendInfo(SERVICE_UPDATED, listenerKey, info);
+        }
+
+        @Override
+        public void onServiceUpdatedLost(int listenerKey) {
+            sendNoArg(SERVICE_UPDATED_LOST, listenerKey);
+        }
+
+        @Override
+        public void onServiceInfoCallbackUnregistered(int listenerKey) {
+            sendNoArg(UNREGISTER_SERVICE_CALLBACK_SUCCEEDED, listenerKey);
+        }
     }
 
     /**
@@ -618,6 +680,37 @@
      */
     public static final int FAILURE_MAX_LIMIT                   = 4;
 
+    /**
+     * Indicates that the stop operation failed because it is not running.
+     * This failure is passed with {@link ResolveListener#onStopResolutionFailed}.
+     */
+    public static final int FAILURE_OPERATION_NOT_RUNNING       = 5;
+
+    /**
+     * Indicates that the service has failed to resolve because of bad parameters.
+     *
+     * This failure is passed with
+     * {@link ServiceInfoCallback#onServiceInfoCallbackRegistrationFailed}.
+     */
+    public static final int FAILURE_BAD_PARAMETERS              = 6;
+
+    /** @hide */
+    @Retention(RetentionPolicy.SOURCE)
+    @IntDef(value = {
+            FAILURE_OPERATION_NOT_RUNNING,
+    })
+    public @interface StopOperationFailureCode {
+    }
+
+    /** @hide */
+    @Retention(RetentionPolicy.SOURCE)
+    @IntDef(value = {
+            FAILURE_ALREADY_ACTIVE,
+            FAILURE_BAD_PARAMETERS,
+    })
+    public @interface ResolutionFailureCode {
+    }
+
     /** Interface for callback invocation for service discovery */
     public interface DiscoveryListener {
 
@@ -646,12 +739,97 @@
         public void onServiceUnregistered(NsdServiceInfo serviceInfo);
     }
 
-    /** Interface for callback invocation for service resolution */
+    /**
+     * Callback for use with {@link NsdManager#resolveService} to resolve the service info and use
+     * with {@link NsdManager#stopServiceResolution} to stop resolution.
+     */
     public interface ResolveListener {
 
-        public void onResolveFailed(NsdServiceInfo serviceInfo, int errorCode);
+        /**
+         * Called on the internal thread or with an executor passed to
+         * {@link NsdManager#resolveService} to report the resolution was failed with an error.
+         *
+         * A resolution operation would call either onServiceResolved or onResolveFailed once based
+         * on the result.
+         */
+        void onResolveFailed(NsdServiceInfo serviceInfo, int errorCode);
 
-        public void onServiceResolved(NsdServiceInfo serviceInfo);
+        /**
+         * Called on the internal thread or with an executor passed to
+         * {@link NsdManager#resolveService} to report the resolved service info.
+         *
+         * A resolution operation would call either onServiceResolved or onResolveFailed once based
+         * on the result.
+         */
+        void onServiceResolved(NsdServiceInfo serviceInfo);
+
+        /**
+         * Called on the internal thread or with an executor passed to
+         * {@link NsdManager#resolveService} to report the resolution was stopped.
+         *
+         * A stop resolution operation would call either onResolveStopped or onStopResolutionFailed
+         * once based on the result.
+         */
+        default void onResolveStopped(@NonNull NsdServiceInfo serviceInfo) { }
+
+        /**
+         * Called once on the internal thread or with an executor passed to
+         * {@link NsdManager#resolveService} to report that stopping resolution failed with an
+         * error.
+         *
+         * A stop resolution operation would call either onResolveStopped or onStopResolutionFailed
+         * once based on the result.
+         */
+        default void onStopResolutionFailed(@NonNull NsdServiceInfo serviceInfo,
+                @StopOperationFailureCode int errorCode) { }
+    }
+
+    /**
+     * Callback to listen to service info updates.
+     *
+     * For use with {@link NsdManager#registerServiceInfoCallback} to register, and with
+     * {@link NsdManager#unregisterServiceInfoCallback} to stop listening.
+     */
+    public interface ServiceInfoCallback {
+
+        /**
+         * Reports that registering the callback failed with an error.
+         *
+         * Called on the executor passed to {@link NsdManager#registerServiceInfoCallback}.
+         *
+         * onServiceInfoCallbackRegistrationFailed will be called exactly once when the callback
+         * could not be registered. No other callback will be sent in that case.
+         */
+        void onServiceInfoCallbackRegistrationFailed(@ResolutionFailureCode int errorCode);
+
+        /**
+         * Reports updated service info.
+         *
+         * Called on the executor passed to {@link NsdManager#registerServiceInfoCallback}. Any
+         * service updates will be notified via this callback until
+         * {@link NsdManager#unregisterServiceInfoCallback} is called. This will only be called once
+         * the service is found, so may never be called if the service is never present.
+         */
+        void onServiceUpdated(@NonNull NsdServiceInfo serviceInfo);
+
+        /**
+         * Reports when the service that this callback listens to becomes unavailable.
+         *
+         * Called on the executor passed to {@link NsdManager#registerServiceInfoCallback}. The
+         * service may become available again, in which case {@link #onServiceUpdated} will be
+         * called.
+         */
+        void onServiceLost();
+
+        /**
+         * Reports that service info updates have stopped.
+         *
+         * Called on the executor passed to {@link NsdManager#registerServiceInfoCallback}.
+         *
+         * A callback unregistration operation will call onServiceInfoCallbackUnregistered
+         * once. After this, the callback may be reused.
+         */
+        void onServiceInfoCallbackUnregistered();
     }
 
     @VisibleForTesting
@@ -744,6 +922,33 @@
                     executor.execute(() -> ((ResolveListener) listener).onServiceResolved(
                             (NsdServiceInfo) obj));
                     break;
+                case STOP_RESOLUTION_FAILED:
+                    removeListener(key);
+                    executor.execute(() -> ((ResolveListener) listener).onStopResolutionFailed(
+                            ns, errorCode));
+                    break;
+                case STOP_RESOLUTION_SUCCEEDED:
+                    removeListener(key);
+                    executor.execute(() -> ((ResolveListener) listener).onResolveStopped(
+                            ns));
+                    break;
+                case REGISTER_SERVICE_CALLBACK_FAILED:
+                    removeListener(key);
+                    executor.execute(() -> ((ServiceInfoCallback) listener)
+                            .onServiceInfoCallbackRegistrationFailed(errorCode));
+                    break;
+                case SERVICE_UPDATED:
+                    executor.execute(() -> ((ServiceInfoCallback) listener)
+                            .onServiceUpdated((NsdServiceInfo) obj));
+                    break;
+                case SERVICE_UPDATED_LOST:
+                    executor.execute(() -> ((ServiceInfoCallback) listener).onServiceLost());
+                    break;
+                case UNREGISTER_SERVICE_CALLBACK_SUCCEEDED:
+                    removeListener(key);
+                    executor.execute(() -> ((ServiceInfoCallback) listener)
+                            .onServiceInfoCallbackUnregistered());
+                    break;
                 default:
                     Log.d(TAG, "Ignored " + message);
                     break;
@@ -1055,7 +1260,14 @@
      * @param serviceInfo service to be resolved
      * @param listener to receive callback upon success or failure. Cannot be null.
      * Cannot be in use for an active service resolution.
+     *
+     * @deprecated the returned ServiceInfo may get stale at any time after resolution, including
+     * immediately after the callback is called, and may not contain some service information that
+     * could be delivered later, like additional host addresses. Prefer using
+     * {@link #registerServiceInfoCallback}, which will keep the application up-to-date with the
+     * state of the service.
      */
+    @Deprecated
     public void resolveService(NsdServiceInfo serviceInfo, ResolveListener listener) {
         resolveService(serviceInfo, Runnable::run, listener);
     }
@@ -1067,7 +1279,14 @@
      * @param serviceInfo service to be resolved
      * @param executor Executor to run listener callbacks with
      * @param listener to receive callback upon success or failure.
+     *
+     * @deprecated the returned ServiceInfo may get stale at any time after resolution, including
+     * immediately after the callback is called, and may not contain some service information that
+     * could be delivered later, like additional host addresses. Prefer using
+     * {@link #registerServiceInfoCallback}, which will keep the application up-to-date with the
+     * state of the service.
      */
+    @Deprecated
     public void resolveService(@NonNull NsdServiceInfo serviceInfo,
             @NonNull Executor executor, @NonNull ResolveListener listener) {
         checkServiceInfo(serviceInfo);
@@ -1079,6 +1298,85 @@
         }
     }
 
+    /**
+     * Stop service resolution initiated with {@link #resolveService}.
+     *
+     * A successful stop is notified with a call to {@link ResolveListener#onResolveStopped}.
+     *
+     * <p> Upon failure to stop service resolution for example if resolution is done or the
+     * requester stops resolution repeatedly, the application is notified
+     * {@link ResolveListener#onStopResolutionFailed} with {@link #FAILURE_OPERATION_NOT_RUNNING}
+     *
+     * @param listener This should be a listener object that was passed to {@link #resolveService}.
+     *                 It identifies the resolution that should be stopped and notifies of a
+     *                 successful or unsuccessful stop. Throws {@code IllegalArgumentException} if
+     *                 the listener was not passed to resolveService before.
+     */
+    public void stopServiceResolution(@NonNull ResolveListener listener) {
+        int id = getListenerKey(listener);
+        try {
+            mService.stopResolution(id);
+        } catch (RemoteException e) {
+            e.rethrowFromSystemServer();
+        }
+    }
+
+    /**
+     * Register a callback to listen for updates to a service.
+     *
+     * An application can listen to a service to continuously monitor availability of given service.
+     * The callback methods will be called on the passed executor. And service updates are sent with
+     * continuous calls to {@link ServiceInfoCallback#onServiceUpdated}.
+     *
+     * This is different from {@link #resolveService} which provides one shot service information.
+     *
+     * <p> An application can listen to a service once a time. It needs to cancel the registration
+     * before registering other callbacks. Upon failure to register a callback for example if
+     * it's a duplicated registration, the application is notified through
+     * {@link ServiceInfoCallback#onServiceInfoCallbackRegistrationFailed} with
+     * {@link #FAILURE_BAD_PARAMETERS} or {@link #FAILURE_ALREADY_ACTIVE}.
+     *
+     * @param serviceInfo the service to receive updates for
+     * @param executor Executor to run callbacks with
+     * @param listener to receive callback upon service update
+     */
+    public void registerServiceInfoCallback(@NonNull NsdServiceInfo serviceInfo,
+            @NonNull Executor executor, @NonNull ServiceInfoCallback listener) {
+        checkServiceInfo(serviceInfo);
+        int key = putListener(listener, executor, serviceInfo);
+        try {
+            mService.registerServiceInfoCallback(key, serviceInfo);
+        } catch (RemoteException e) {
+            e.rethrowFromSystemServer();
+        }
+    }
+
+    /**
+     * Unregister a callback registered with {@link #registerServiceInfoCallback}.
+     *
+     * A successful unregistration is notified with a call to
+     * {@link ServiceInfoCallback#onServiceInfoCallbackUnregistered}. The same callback can only be
+     * reused after this is called.
+     *
+     * <p>If the callback is not already registered, this will throw with
+     * {@link IllegalArgumentException}.
+     *
+     * @param listener This should be a listener object that was passed to
+     *                 {@link #registerServiceInfoCallback}. It identifies the registration that
+     *                 should be unregistered and notifies of a successful or unsuccessful stop.
+     *                 Throws {@code IllegalArgumentException} if the listener was not passed to
+     *                 {@link #registerServiceInfoCallback} before.
+     */
+    public void unregisterServiceInfoCallback(@NonNull ServiceInfoCallback listener) {
+        // Will throw IllegalArgumentException if the listener is not known
+        int id = getListenerKey(listener);
+        try {
+            mService.unregisterServiceInfoCallback(id);
+        } catch (RemoteException e) {
+            e.rethrowFromSystemServer();
+        }
+    }
+
     private static void checkListener(Object listener) {
         Objects.requireNonNull(listener, "listener cannot be null");
     }
diff --git a/framework-t/src/android/net/nsd/NsdServiceInfo.java b/framework-t/src/android/net/nsd/NsdServiceInfo.java
index 6438a60..caeecdd 100644
--- a/framework-t/src/android/net/nsd/NsdServiceInfo.java
+++ b/framework-t/src/android/net/nsd/NsdServiceInfo.java
@@ -26,10 +26,14 @@
 import android.util.ArrayMap;
 import android.util.Log;
 
+import com.android.net.module.util.InetAddressUtils;
+
 import java.io.UnsupportedEncodingException;
 import java.net.InetAddress;
 import java.nio.charset.StandardCharsets;
+import java.util.ArrayList;
 import java.util.Collections;
+import java.util.List;
 import java.util.Map;
 
 /**
@@ -46,7 +50,7 @@
 
     private final ArrayMap<String, byte[]> mTxtRecord = new ArrayMap<>();
 
-    private InetAddress mHost;
+    private final List<InetAddress> mHostAddresses = new ArrayList<>();
 
     private int mPort;
 
@@ -84,17 +88,32 @@
         mServiceType = s;
     }
 
-    /** Get the host address. The host address is valid for a resolved service. */
+    /**
+     * Get the host address. The host address is valid for a resolved service.
+     *
+     * @deprecated Use {@link #getHostAddresses()} to get the entire list of addresses for the host.
+     */
+    @Deprecated
     public InetAddress getHost() {
-        return mHost;
+        return mHostAddresses.size() == 0 ? null : mHostAddresses.get(0);
     }
 
-    /** Set the host address */
+    /**
+     * Set the host address
+     *
+     * @deprecated Use {@link #setHostAddresses(List)} to set multiple addresses for the host.
+     */
+    @Deprecated
     public void setHost(InetAddress s) {
-        mHost = s;
+        setHostAddresses(Collections.singletonList(s));
     }
 
-    /** Get port number. The port number is valid for a resolved service. */
+    /**
+     * Get port number. The port number is valid for a resolved service.
+     *
+     * The port is valid for all addresses.
+     * @see #getHostAddresses()
+     */
     public int getPort() {
         return mPort;
     }
@@ -105,6 +124,24 @@
     }
 
     /**
+     * Get the host addresses.
+     *
+     * All host addresses are valid for the resolved service.
+     * All addresses share the same port
+     * @see #getPort()
+     */
+    @NonNull
+    public List<InetAddress> getHostAddresses() {
+        return new ArrayList<>(mHostAddresses);
+    }
+
+    /** Set the host addresses */
+    public void setHostAddresses(@NonNull List<InetAddress> addresses) {
+        mHostAddresses.clear();
+        mHostAddresses.addAll(addresses);
+    }
+
+    /**
      * Unpack txt information from a base-64 encoded byte array.
      *
      * @param txtRecordsRawBytes The raw base64 encoded byte array.
@@ -359,7 +396,7 @@
         StringBuilder sb = new StringBuilder();
         sb.append("name: ").append(mServiceName)
                 .append(", type: ").append(mServiceType)
-                .append(", host: ").append(mHost)
+                .append(", hostAddresses: ").append(TextUtils.join(", ", mHostAddresses))
                 .append(", port: ").append(mPort)
                 .append(", network: ").append(mNetwork);
 
@@ -377,12 +414,6 @@
     public void writeToParcel(Parcel dest, int flags) {
         dest.writeString(mServiceName);
         dest.writeString(mServiceType);
-        if (mHost != null) {
-            dest.writeInt(1);
-            dest.writeByteArray(mHost.getAddress());
-        } else {
-            dest.writeInt(0);
-        }
         dest.writeInt(mPort);
 
         // TXT record key/value pairs.
@@ -401,6 +432,10 @@
 
         dest.writeParcelable(mNetwork, 0);
         dest.writeInt(mInterfaceIndex);
+        dest.writeInt(mHostAddresses.size());
+        for (InetAddress address : mHostAddresses) {
+            InetAddressUtils.parcelInetAddress(dest, address, flags);
+        }
     }
 
     /** Implement the Parcelable interface */
@@ -410,13 +445,6 @@
                 NsdServiceInfo info = new NsdServiceInfo();
                 info.mServiceName = in.readString();
                 info.mServiceType = in.readString();
-
-                if (in.readInt() == 1) {
-                    try {
-                        info.mHost = InetAddress.getByAddress(in.createByteArray());
-                    } catch (java.net.UnknownHostException e) {}
-                }
-
                 info.mPort = in.readInt();
 
                 // TXT record key/value pairs.
@@ -432,6 +460,10 @@
                 }
                 info.mNetwork = in.readParcelable(null, Network.class);
                 info.mInterfaceIndex = in.readInt();
+                int size = in.readInt();
+                for (int i = 0; i < size; i++) {
+                    info.mHostAddresses.add(InetAddressUtils.unparcelInetAddress(in));
+                }
                 return info;
             }
 
diff --git a/framework/api/system-current.txt b/framework/api/system-current.txt
index dd3404c..0b03983 100644
--- a/framework/api/system-current.txt
+++ b/framework/api/system-current.txt
@@ -470,7 +470,9 @@
   }
 
   public abstract class SocketKeepalive implements java.lang.AutoCloseable {
+    method public final void start(@IntRange(from=0xa, to=0xe10) int, int);
     field public static final int ERROR_NO_SUCH_SLOT = -33; // 0xffffffdf
+    field public static final int FLAG_AUTOMATIC_ON_OFF = 1; // 0x1
     field public static final int SUCCESS = 0; // 0x0
   }
 
diff --git a/framework/src/android/net/IConnectivityManager.aidl b/framework/src/android/net/IConnectivityManager.aidl
index 7b6e769..7db231e 100644
--- a/framework/src/android/net/IConnectivityManager.aidl
+++ b/framework/src/android/net/IConnectivityManager.aidl
@@ -188,7 +188,7 @@
 
     void startNattKeepaliveWithFd(in Network network, in ParcelFileDescriptor pfd, int resourceId,
             int intervalSeconds, in ISocketKeepaliveCallback cb, String srcAddr,
-            String dstAddr);
+            String dstAddr, boolean automaticOnOffKeepalives);
 
     void startTcpKeepalive(in Network network, in ParcelFileDescriptor pfd, int intervalSeconds,
             in ISocketKeepaliveCallback cb);
diff --git a/framework/src/android/net/NattSocketKeepalive.java b/framework/src/android/net/NattSocketKeepalive.java
index 56cc923..4d45e70 100644
--- a/framework/src/android/net/NattSocketKeepalive.java
+++ b/framework/src/android/net/NattSocketKeepalive.java
@@ -47,13 +47,39 @@
         mResourceId = resourceId;
     }
 
+    /**
+     * Request that keepalive be started with the given {@code intervalSec}.
+     *
+     * When a VPN is running with the network for this keepalive as its underlying network, the
+     * system can monitor the TCP connections on that VPN to determine whether this keepalive is
+     * necessary. To enable this behavior, pass {@link SocketKeepalive#FLAG_AUTOMATIC_ON_OFF} into
+     * the flags. When this is enabled, the system will disable sending keepalive packets when
+     * there are no TCP connections over the VPN(s) running over this network to save battery, and
+     * restart sending them as soon as any TCP connection is opened over one of the VPN networks.
+     * When no VPN is running on top of this network, this flag has no effect, i.e. the keepalives
+     * are always sent with the specified interval.
+     *
+     * Also {@see SocketKeepalive}.
+     *
+     * @param intervalSec The target interval in seconds between keepalive packet transmissions.
+     *                    The interval should be between 10 seconds and 3600 seconds. Otherwise,
+     *                    the supplied {@link Callback} will see a call to
+     *                    {@link Callback#onError(int)} with {@link #ERROR_INVALID_INTERVAL}.
+     * @param flags Flags to enable/disable available options on this keepalive.
+     * @hide
+     */
     @Override
-    protected void startImpl(int intervalSec) {
+    protected void startImpl(int intervalSec, int flags) {
+        if (0 != (flags & ~FLAG_AUTOMATIC_ON_OFF)) {
+            throw new IllegalArgumentException("Illegal flag value for "
+                    + this.getClass().getSimpleName() + " : " + flags);
+        }
+        final boolean automaticOnOffKeepalives = 0 != (flags & FLAG_AUTOMATIC_ON_OFF);
         mExecutor.execute(() -> {
             try {
                 mService.startNattKeepaliveWithFd(mNetwork, mPfd, mResourceId,
-                        intervalSec, mCallback,
-                        mSource.getHostAddress(), mDestination.getHostAddress());
+                        intervalSec, mCallback, mSource.getHostAddress(),
+                        mDestination.getHostAddress(), automaticOnOffKeepalives);
             } catch (RemoteException e) {
                 Log.e(TAG, "Error starting socket keepalive: ", e);
                 throw e.rethrowFromSystemServer();
diff --git a/framework/src/android/net/NetworkAgent.java b/framework/src/android/net/NetworkAgent.java
index 1486619..732bd87 100644
--- a/framework/src/android/net/NetworkAgent.java
+++ b/framework/src/android/net/NetworkAgent.java
@@ -483,6 +483,20 @@
      */
     public static final int EVENT_UNREGISTER_AFTER_REPLACEMENT = BASE + 29;
 
+    /**
+     * Sent by AutomaticOnOffKeepaliveTracker periodically (when relevant) to trigger monitor
+     * automatic keepalive request.
+     *
+     * NATT keepalives have an automatic mode where the system only sends keepalive packets when
+     * TCP sockets are open over a VPN. The system will check periodically for presence of
+     * such open sockets, and this message is what triggers the re-evaluation.
+     *
+     * arg1 = hardware slot number of the keepalive
+     * obj = {@link Network} that the keepalive is started on.
+     * @hide
+     */
+    public static final int CMD_MONITOR_AUTOMATIC_KEEPALIVE = BASE + 30;
+
     private static NetworkInfo getLegacyNetworkInfo(final NetworkAgentConfig config) {
         final NetworkInfo ni = new NetworkInfo(config.legacyType, config.legacySubType,
                 config.legacyTypeName, config.legacySubTypeName);
diff --git a/framework/src/android/net/SocketKeepalive.java b/framework/src/android/net/SocketKeepalive.java
index 57cf5e3..90e5e9b 100644
--- a/framework/src/android/net/SocketKeepalive.java
+++ b/framework/src/android/net/SocketKeepalive.java
@@ -16,6 +16,8 @@
 
 package android.net;
 
+import static android.annotation.SystemApi.Client.PRIVILEGED_APPS;
+
 import android.annotation.IntDef;
 import android.annotation.IntRange;
 import android.annotation.NonNull;
@@ -174,6 +176,27 @@
     public @interface KeepaliveEvent {}
 
     /**
+     * Whether the system automatically toggles keepalive when no TCP connection is open on the VPN.
+     *
+     * If this flag is present, the system will monitor the VPN(s) running on top of the specified
+     * network for open TCP connections. When no such connections are open, it will turn off the
+     * keepalives to conserve battery power. When there is at least one such connection it will
+     * turn on the keepalives to make sure functionality is preserved.
+     *
+     * This only works with {@link NattSocketKeepalive}.
+     * @hide
+     */
+    @SystemApi
+    public static final int FLAG_AUTOMATIC_ON_OFF = 1 << 0;
+
+    /** @hide */
+    @Retention(RetentionPolicy.SOURCE)
+    @IntDef(prefix = { "FLAG_"}, flag = true, value = {
+            FLAG_AUTOMATIC_ON_OFF
+    })
+    public @interface StartFlags {}
+
+    /**
      * The minimum interval in seconds between keepalive packet transmissions.
      *
      * @hide
@@ -294,13 +317,15 @@
     }
 
     /**
-     * Request that keepalive be started with the given {@code intervalSec}. See
-     * {@link SocketKeepalive}. If the remote binder dies, or the binder call throws an exception
-     * when invoking start or stop of the {@link SocketKeepalive}, a {@link RemoteException} will be
-     * thrown into the {@code executor}. This is typically not important to catch because the remote
-     * party is the system, so if it is not in shape to communicate through binder the system is
-     * probably going down anyway. If the caller cares regardless, it can use a custom
-     * {@link Executor} to catch the {@link RemoteException}.
+     * Request that keepalive be started with the given {@code intervalSec}.
+     *
+     * See {@link SocketKeepalive}. If the remote binder dies, or the binder call throws an
+     * exception when invoking start or stop of the {@link SocketKeepalive}, a
+     * {@link RuntimeException} caused by a {@link RemoteException} will be thrown into the
+     * {@link Executor}. This is typically not important to catch because the remote party is
+     * the system, so if it is not in shape to communicate through binder the system is going
+     * down anyway. If the caller still cares, it can use a custom {@link Executor} to catch the
+     * {@link RuntimeException}.
      *
      * @param intervalSec The target interval in seconds between keepalive packet transmissions.
      *                    The interval should be between 10 seconds and 3600 seconds, otherwise
@@ -308,11 +333,35 @@
      */
     public final void start(@IntRange(from = MIN_INTERVAL_SEC, to = MAX_INTERVAL_SEC)
             int intervalSec) {
-        startImpl(intervalSec);
+        startImpl(intervalSec, 0 /* flags */);
+    }
+
+    /**
+     * Request that keepalive be started with the given {@code intervalSec}.
+     *
+     * See {@link SocketKeepalive}. If the remote binder dies, or the binder call throws an
+     * exception when invoking start or stop of the {@link SocketKeepalive}, a
+     * {@link RuntimeException} caused by a {@link RemoteException} will be thrown into the
+     * {@link Executor}. This is typically not important to catch because the remote party is
+     * the system, so if it is not in shape to communicate through binder the system is going
+     * down anyway. If the caller still cares, it can use a custom {@link Executor} to catch the
+     * {@link RuntimeException}.
+     *
+     * @param intervalSec The target interval in seconds between keepalive packet transmissions.
+     *                    The interval should be between 10 seconds and 3600 seconds. Otherwise,
+     *                    the supplied {@link Callback} will see a call to
+     *                    {@link Callback#onError(int)} with {@link #ERROR_INVALID_INTERVAL}.
+     * @param flags Flags to enable/disable available options on this keepalive.
+     * @hide
+     */
+    @SystemApi(client = PRIVILEGED_APPS)
+    public final void start(@IntRange(from = MIN_INTERVAL_SEC, to = MAX_INTERVAL_SEC)
+            int intervalSec, @StartFlags int flags) {
+        startImpl(intervalSec, flags);
     }
 
     /** @hide */
-    protected abstract void startImpl(int intervalSec);
+    protected abstract void startImpl(int intervalSec, @StartFlags int flags);
 
     /**
      * Requests that keepalive be stopped. The application must wait for {@link Callback#onStopped}
diff --git a/framework/src/android/net/TcpSocketKeepalive.java b/framework/src/android/net/TcpSocketKeepalive.java
index 7131784..51d805e 100644
--- a/framework/src/android/net/TcpSocketKeepalive.java
+++ b/framework/src/android/net/TcpSocketKeepalive.java
@@ -50,7 +50,11 @@
      *   acknowledgement.
      */
     @Override
-    protected void startImpl(int intervalSec) {
+    protected void startImpl(int intervalSec, int flags) {
+        if (0 != flags) {
+            throw new IllegalArgumentException("Illegal flag value for "
+                    + this.getClass().getSimpleName() + " : " + flags);
+        }
         mExecutor.execute(() -> {
             try {
                 mService.startTcpKeepalive(mNetwork, mPfd, intervalSec, mCallback);
diff --git a/nearby/README.md b/nearby/README.md
index 6925dc4..8451882 100644
--- a/nearby/README.md
+++ b/nearby/README.md
@@ -29,6 +29,20 @@
 $ aidegen .
 # This will launch Intellij project for Nearby module.
 ```
+Note, the setup above may fail to index classes defined in proto, such
+that all classes defined in proto shows red in IDE and cannot be auto-completed.
+To fix, you can mannually add jar files generated from proto to the class path
+as below.  First, find the jar file of presence proto with
+```sh
+ls $ANDROID_BUILD_TOP/out/soong/.intermediates/packages/modules/Connectivity/nearby/service/proto/presence-lite-protos/android_common/combined/presence-lite-protos.jar
+```
+Then, add the jar in IDE as below.
+1. Menu: File > Project Structure
+2. Select Modules at the left panel and select the Dependencies tab.
+3. Select the + icon and select 1 JARs or Directories option.
+4. Select the JAR file found above, make sure it is checked in the beginning square.
+5. Click the OK button.
+6. Restart the IDE to re-index.
 
 ## Build and Install
 
@@ -40,3 +54,23 @@
     --output /tmp/tethering.apex
 $ adb install -r /tmp/tethering.apex
 ```
+
+## Build and Install from tm-mainline-prod branch
+When build and flash the APEX from tm-mainline-prod, you may see the error below.
+```
+[INSTALL_FAILED_VERSION_DOWNGRADE: Downgrade of APEX package com.google.android.tethering is not allowed. Active version: 990090000 attempted: 339990000])
+```
+This is because the device is flashed with AOSP built from master or other branches, which has
+prebuilt APEX with higher version. We can use root access to replace the prebuilt APEX with the APEX
+built from tm-mainline-prod as below.
+1. adb root && adb remount; adb shell mount -orw,remount /system/apex
+2. cp tethering.next.apex com.google.android.tethering.apex
+3. adb push  com.google.android.tethering.apex  /system/apex/
+4. adb reboot
+After the steps above, the APEX can be reinstalled with adb install -r.
+(More APEX background can be found in https://source.android.com/docs/core/ota/apex#using-an-apex.)
+
+## Build APEX to support multiple platforms
+If you need to flash the APEX to different devices, Pixel 6, Pixel 7, or even devices from OEM, you
+can share the APEX by ```source build/envsetup.sh && lunch aosp_arm64-userdebug```. This can avoid
+ re-compiling for different targets.
diff --git a/nearby/framework/java/android/nearby/DataElement.java b/nearby/framework/java/android/nearby/DataElement.java
index 6fa5fb5..4592c33 100644
--- a/nearby/framework/java/android/nearby/DataElement.java
+++ b/nearby/framework/java/android/nearby/DataElement.java
@@ -16,13 +16,17 @@
 
 package android.nearby;
 
+import android.annotation.IntDef;
 import android.annotation.NonNull;
+import android.annotation.Nullable;
 import android.annotation.SystemApi;
 import android.os.Parcel;
 import android.os.Parcelable;
 
 import com.android.internal.util.Preconditions;
 
+import java.util.Arrays;
+import java.util.Objects;
 
 /**
  * Represents a data element in Nearby Presence.
@@ -35,11 +39,80 @@
     private final int mKey;
     private final byte[] mValue;
 
+    /** @hide */
+    @IntDef({
+            DataType.BLE_SERVICE_DATA,
+            DataType.BLE_ADDRESS,
+            DataType.SALT,
+            DataType.PRIVATE_IDENTITY,
+            DataType.TRUSTED_IDENTITY,
+            DataType.PUBLIC_IDENTITY,
+            DataType.PROVISIONED_IDENTITY,
+            DataType.TX_POWER,
+            DataType.ACTION,
+            DataType.MODEL_ID,
+            DataType.EDDYSTONE_EPHEMERAL_IDENTIFIER,
+            DataType.ACCOUNT_KEY_DATA,
+            DataType.CONNECTION_STATUS,
+            DataType.BATTERY,
+            DataType.SCAN_MODE
+    })
+    public @interface DataType {
+        int BLE_SERVICE_DATA = 100;
+        int BLE_ADDRESS = 101;
+        // This is to indicate if the scan is offload only
+        int SCAN_MODE = 102;
+        int SALT = 0;
+        int PRIVATE_IDENTITY = 1;
+        int TRUSTED_IDENTITY = 2;
+        int PUBLIC_IDENTITY = 3;
+        int PROVISIONED_IDENTITY = 4;
+        int TX_POWER = 5;
+        int ACTION = 6;
+        int MODEL_ID = 7;
+        int EDDYSTONE_EPHEMERAL_IDENTIFIER = 8;
+        int ACCOUNT_KEY_DATA = 9;
+        int CONNECTION_STATUS = 10;
+        int BATTERY = 11;
+    }
+
+    /**
+     * @hide
+     */
+    public static boolean isValidType(int type) {
+        return type == DataType.BLE_SERVICE_DATA
+                || type == DataType.ACCOUNT_KEY_DATA
+                || type == DataType.BLE_ADDRESS
+                || type == DataType.SCAN_MODE
+                || type == DataType.SALT
+                || type == DataType.PRIVATE_IDENTITY
+                || type == DataType.TRUSTED_IDENTITY
+                || type == DataType.PUBLIC_IDENTITY
+                || type == DataType.PROVISIONED_IDENTITY
+                || type == DataType.TX_POWER
+                || type == DataType.ACTION
+                || type == DataType.MODEL_ID
+                || type == DataType.EDDYSTONE_EPHEMERAL_IDENTIFIER
+                || type == DataType.CONNECTION_STATUS
+                || type == DataType.BATTERY;
+    }
+
+    /**
+     * @return {@code true} if this is identity type.
+     * @hide
+     */
+    public boolean isIdentityDataType() {
+        return mKey == DataType.PRIVATE_IDENTITY
+                || mKey == DataType.TRUSTED_IDENTITY
+                || mKey == DataType.PUBLIC_IDENTITY
+                || mKey == DataType.PROVISIONED_IDENTITY;
+    }
+
     /**
      * Constructs a {@link DataElement}.
      */
     public DataElement(int key, @NonNull byte[] value) {
-        Preconditions.checkState(value != null, "value cannot be null");
+        Preconditions.checkArgument(value != null, "value cannot be null");
         mKey = key;
         mValue = value;
     }
@@ -61,6 +134,20 @@
     };
 
     @Override
+    public boolean equals(@Nullable Object obj) {
+        if (obj instanceof DataElement) {
+            return mKey == ((DataElement) obj).mKey
+                    && Arrays.equals(mValue, ((DataElement) obj).mValue);
+        }
+        return false;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(mKey, Arrays.hashCode(mValue));
+    }
+
+    @Override
     public int describeContents() {
         return 0;
     }
diff --git a/nearby/framework/java/android/nearby/NearbyDevice.java b/nearby/framework/java/android/nearby/NearbyDevice.java
index 538940c..e8fcc28 100644
--- a/nearby/framework/java/android/nearby/NearbyDevice.java
+++ b/nearby/framework/java/android/nearby/NearbyDevice.java
@@ -21,11 +21,13 @@
 import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.annotation.SystemApi;
+import android.util.ArraySet;
 
 import com.android.internal.util.Preconditions;
 
 import java.util.List;
 import java.util.Objects;
+import java.util.Set;
 
 /**
  * A class represents a device that can be discovered by multiple mediums.
@@ -123,13 +125,17 @@
 
     @Override
     public boolean equals(Object other) {
-        if (other instanceof NearbyDevice) {
-            NearbyDevice otherDevice = (NearbyDevice) other;
-            return Objects.equals(mName, otherDevice.mName)
-                    && mMediums == otherDevice.mMediums
-                    && mRssi == otherDevice.mRssi;
+        if (!(other instanceof NearbyDevice)) {
+            return false;
         }
-        return false;
+        NearbyDevice otherDevice = (NearbyDevice) other;
+        Set<Integer> mediumSet = new ArraySet<>(mMediums);
+        Set<Integer> otherMediumSet = new ArraySet<>(otherDevice.mMediums);
+        if (!mediumSet.equals(otherMediumSet)) {
+            return false;
+        }
+
+        return Objects.equals(mName, otherDevice.mName) && mRssi == otherDevice.mRssi;
     }
 
     @Override
diff --git a/nearby/framework/java/android/nearby/NearbyDeviceParcelable.java b/nearby/framework/java/android/nearby/NearbyDeviceParcelable.java
index 8f44091..180b662 100644
--- a/nearby/framework/java/android/nearby/NearbyDeviceParcelable.java
+++ b/nearby/framework/java/android/nearby/NearbyDeviceParcelable.java
@@ -76,6 +76,17 @@
                         in.readByteArray(salt);
                         builder.setData(salt);
                     }
+                    if (in.readInt() == 1) {
+                        builder.setPresenceDevice(in.readParcelable(
+                                PresenceDevice.class.getClassLoader(),
+                                PresenceDevice.class));
+                    }
+                    if (in.readInt() == 1) {
+                        int encryptionKeyTagLength = in.readInt();
+                        byte[] keyTag = new byte[encryptionKeyTagLength];
+                        in.readByteArray(keyTag);
+                        builder.setData(keyTag);
+                    }
                     return builder.build();
                 }
 
@@ -96,6 +107,8 @@
     @Nullable private final String mFastPairModelId;
     @Nullable private final byte[] mData;
     @Nullable private final byte[] mSalt;
+    @Nullable private final PresenceDevice mPresenceDevice;
+    @Nullable private final byte[] mEncryptionKeyTag;
 
     private NearbyDeviceParcelable(
             @ScanRequest.ScanType int scanType,
@@ -108,7 +121,9 @@
             @Nullable String fastPairModelId,
             @Nullable String bluetoothAddress,
             @Nullable byte[] data,
-            @Nullable byte[] salt) {
+            @Nullable byte[] salt,
+            @Nullable PresenceDevice presenceDevice,
+            @Nullable byte[] encryptionKeyTag) {
         mScanType = scanType;
         mName = name;
         mMedium = medium;
@@ -120,6 +135,8 @@
         mBluetoothAddress = bluetoothAddress;
         mData = data;
         mSalt = salt;
+        mPresenceDevice = presenceDevice;
+        mEncryptionKeyTag = encryptionKeyTag;
     }
 
     /** No special parcel contents. */
@@ -164,6 +181,15 @@
             dest.writeInt(mSalt.length);
             dest.writeByteArray(mSalt);
         }
+        dest.writeInt(mPresenceDevice == null ? 0 : 1);
+        if (mPresenceDevice != null) {
+            dest.writeParcelable(mPresenceDevice, /* parcelableFlags= */ 0);
+        }
+        dest.writeInt(mEncryptionKeyTag == null ? 0 : 1);
+        if (mEncryptionKeyTag != null) {
+            dest.writeInt(mEncryptionKeyTag.length);
+            dest.writeByteArray(mEncryptionKeyTag);
+        }
     }
 
     /** Returns a string representation of this ScanRequest. */
@@ -210,7 +236,11 @@
                     && (Objects.equals(
                             mFastPairModelId, otherNearbyDeviceParcelable.mFastPairModelId))
                     && (Arrays.equals(mData, otherNearbyDeviceParcelable.mData))
-                    && (Arrays.equals(mSalt, otherNearbyDeviceParcelable.mSalt));
+                    && (Arrays.equals(mSalt, otherNearbyDeviceParcelable.mSalt))
+                    && (Objects.equals(
+                            mPresenceDevice, otherNearbyDeviceParcelable.mPresenceDevice))
+                    && (Arrays.equals(
+                            mEncryptionKeyTag, otherNearbyDeviceParcelable.mEncryptionKeyTag));
         }
         return false;
     }
@@ -227,7 +257,9 @@
                 mBluetoothAddress,
                 mFastPairModelId,
                 Arrays.hashCode(mData),
-                Arrays.hashCode(mSalt));
+                Arrays.hashCode(mSalt),
+                mPresenceDevice,
+                Arrays.hashCode(mEncryptionKeyTag));
     }
 
     /**
@@ -351,6 +383,26 @@
         return mSalt;
     }
 
+    /**
+     * Gets the {@link PresenceDevice} Nearby Presence device. This field is
+     * for Fast Pair client only.
+     */
+    @Nullable
+    public PresenceDevice getPresenceDevice() {
+        return mPresenceDevice;
+    }
+
+    /**
+     * Gets the encryption key tag calculated from advertisement
+     * Returns {@code null} if the data is not encrypted or this is not a Presence device.
+     *
+     * Used in Presence.
+     */
+    @Nullable
+    public byte[] getEncryptionKeyTag() {
+        return mEncryptionKeyTag;
+    }
+
     /** Builder class for {@link NearbyDeviceParcelable}. */
     public static final class Builder {
         @Nullable private String mName;
@@ -364,6 +416,8 @@
         @Nullable private String mBluetoothAddress;
         @Nullable private byte[] mData;
         @Nullable private byte[] mSalt;
+        @Nullable private PresenceDevice mPresenceDevice;
+        @Nullable private byte[] mEncryptionKeyTag;
 
         /**
          * Sets the scan type of the NearbyDeviceParcelable.
@@ -469,7 +523,7 @@
         /**
          * Sets the scanned raw data.
          *
-         * @param data Data the scan. For example, {@link ScanRecord#getServiceData()} if scanned by
+         * @param data raw data scanned, like {@link ScanRecord#getServiceData()} if scanned by
          *             Bluetooth.
          */
         @NonNull
@@ -479,6 +533,17 @@
         }
 
         /**
+         * Sets the encryption key tag calculated from the advertisement.
+         *
+         * @param encryptionKeyTag calculated from identity scanned from the advertisement
+         */
+        @NonNull
+        public Builder setEncryptionKeyTag(@Nullable byte[] encryptionKeyTag) {
+            mEncryptionKeyTag = encryptionKeyTag;
+            return this;
+        }
+
+        /**
          * Sets the slat in the advertisement from the Nearby Presence device.
          *
          * @param salt in the advertisement from the Nearby Presence device.
@@ -489,6 +554,17 @@
             return this;
         }
 
+        /**
+         * Sets the {@link PresenceDevice} if there is any.
+         * The current {@link NearbyDeviceParcelable} can be seen as the wrapper of the
+         * {@link PresenceDevice}.
+         */
+        @Nullable
+        public Builder setPresenceDevice(@Nullable PresenceDevice presenceDevice) {
+            mPresenceDevice = presenceDevice;
+            return this;
+        }
+
         /** Builds a ScanResult. */
         @NonNull
         public NearbyDeviceParcelable build() {
@@ -503,7 +579,9 @@
                     mFastPairModelId,
                     mBluetoothAddress,
                     mData,
-                    mSalt);
+                    mSalt,
+                    mPresenceDevice,
+                    mEncryptionKeyTag);
         }
     }
 }
diff --git a/nearby/framework/java/android/nearby/NearbyManager.java b/nearby/framework/java/android/nearby/NearbyManager.java
index 106c290..6d6b69a 100644
--- a/nearby/framework/java/android/nearby/NearbyManager.java
+++ b/nearby/framework/java/android/nearby/NearbyManager.java
@@ -62,7 +62,7 @@
             ScanStatus.ERROR,
     })
     public @interface ScanStatus {
-        // Default, invalid state.
+        // The undetermined status, some modules may be initializing. Retry is suggested.
         int UNKNOWN = 0;
         // The successful state.
         int SUCCESS = 1;
@@ -103,6 +103,7 @@
         mService = service;
     }
 
+    @Nullable
     private static NearbyDevice toClientNearbyDevice(
             NearbyDeviceParcelable nearbyDeviceParcelable,
             @ScanRequest.ScanType int scanType) {
@@ -118,23 +119,12 @@
         }
 
         if (scanType == ScanRequest.SCAN_TYPE_NEARBY_PRESENCE) {
-            PublicCredential publicCredential = nearbyDeviceParcelable.getPublicCredential();
-            if (publicCredential == null) {
-                return null;
+            PresenceDevice presenceDevice = nearbyDeviceParcelable.getPresenceDevice();
+            if (presenceDevice == null) {
+                Log.e(TAG,
+                        "Cannot find any Presence device in discovered NearbyDeviceParcelable");
             }
-            byte[] salt = nearbyDeviceParcelable.getSalt();
-            if (salt == null) {
-                salt = new byte[0];
-            }
-            return new PresenceDevice.Builder(
-                    // Use the public credential hash as the device Id.
-                    String.valueOf(publicCredential.hashCode()),
-                    salt,
-                    publicCredential.getSecretId(),
-                    publicCredential.getEncryptedMetadata())
-                    .setRssi(nearbyDeviceParcelable.getRssi())
-                    .addMedium(nearbyDeviceParcelable.getMedium())
-                    .build();
+            return presenceDevice;
         }
         return null;
     }
@@ -339,9 +329,9 @@
         public void onDiscovered(NearbyDeviceParcelable nearbyDeviceParcelable)
                 throws RemoteException {
             mExecutor.execute(() -> {
-                if (mScanCallback != null) {
-                    mScanCallback.onDiscovered(
-                            toClientNearbyDevice(nearbyDeviceParcelable, mScanType));
+                NearbyDevice nearbyDevice = toClientNearbyDevice(nearbyDeviceParcelable, mScanType);
+                if (mScanCallback != null && nearbyDevice != null) {
+                    mScanCallback.onDiscovered(nearbyDevice);
                 }
             });
         }
@@ -350,7 +340,8 @@
         public void onUpdated(NearbyDeviceParcelable nearbyDeviceParcelable)
                 throws RemoteException {
             mExecutor.execute(() -> {
-                if (mScanCallback != null) {
+                NearbyDevice nearbyDevice = toClientNearbyDevice(nearbyDeviceParcelable, mScanType);
+                if (mScanCallback != null && nearbyDevice != null) {
                     mScanCallback.onUpdated(
                             toClientNearbyDevice(nearbyDeviceParcelable, mScanType));
                 }
@@ -360,7 +351,8 @@
         @Override
         public void onLost(NearbyDeviceParcelable nearbyDeviceParcelable) throws RemoteException {
             mExecutor.execute(() -> {
-                if (mScanCallback != null) {
+                NearbyDevice nearbyDevice = toClientNearbyDevice(nearbyDeviceParcelable, mScanType);
+                if (mScanCallback != null && nearbyDevice != null) {
                     mScanCallback.onLost(
                             toClientNearbyDevice(nearbyDeviceParcelable, mScanType));
                 }
diff --git a/nearby/framework/java/android/nearby/PresenceDevice.java b/nearby/framework/java/android/nearby/PresenceDevice.java
index cb406e4..7efa5e6 100644
--- a/nearby/framework/java/android/nearby/PresenceDevice.java
+++ b/nearby/framework/java/android/nearby/PresenceDevice.java
@@ -26,6 +26,7 @@
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.List;
 import java.util.Objects;
 
@@ -134,6 +135,54 @@
         return mExtendedProperties;
     }
 
+    /**
+     * This can only be hidden because this is the System API,
+     * which cannot be changed in T timeline.
+     *
+     * @hide
+     */
+    @Override
+    public boolean equals(Object other) {
+        if (other instanceof PresenceDevice) {
+            PresenceDevice otherDevice = (PresenceDevice) other;
+            if (super.equals(otherDevice)) {
+                return Arrays.equals(mSalt, otherDevice.mSalt)
+                        && Arrays.equals(mSecretId, otherDevice.mSecretId)
+                        && Arrays.equals(mEncryptedIdentity, otherDevice.mEncryptedIdentity)
+                        && Objects.equals(mDeviceId, otherDevice.mDeviceId)
+                        && mDeviceType == otherDevice.mDeviceType
+                        && Objects.equals(mDeviceImageUrl, otherDevice.mDeviceImageUrl)
+                        && mDiscoveryTimestampMillis == otherDevice.mDiscoveryTimestampMillis
+                        && Objects.equals(mExtendedProperties, otherDevice.mExtendedProperties);
+            }
+        }
+        return false;
+    }
+
+    /**
+     * This can only be hidden because this is the System API,
+     * which cannot be changed in T timeline.
+     *
+     * @hide
+     *
+     * @return The unique hash value of the {@link PresenceDevice}
+     */
+    @Override
+    public int hashCode() {
+        return Objects.hash(
+                getName(),
+                getMediums(),
+                getRssi(),
+                Arrays.hashCode(mSalt),
+                Arrays.hashCode(mSecretId),
+                Arrays.hashCode(mEncryptedIdentity),
+                mDeviceId,
+                mDeviceType,
+                mDeviceImageUrl,
+                mDiscoveryTimestampMillis,
+                mExtendedProperties);
+    }
+
     private PresenceDevice(String deviceName, List<Integer> mMediums, int rssi, String deviceId,
             byte[] salt, byte[] secretId, byte[] encryptedIdentity, int deviceType,
             String deviceImageUrl, long discoveryTimestampMillis,
diff --git a/nearby/framework/java/android/nearby/PresenceScanFilter.java b/nearby/framework/java/android/nearby/PresenceScanFilter.java
index f0c3c06..50e97b4 100644
--- a/nearby/framework/java/android/nearby/PresenceScanFilter.java
+++ b/nearby/framework/java/android/nearby/PresenceScanFilter.java
@@ -71,7 +71,7 @@
         super(ScanRequest.SCAN_TYPE_NEARBY_PRESENCE, rssiThreshold);
         mCredentials = new ArrayList<>(credentials);
         mPresenceActions = new ArrayList<>(presenceActions);
-        mExtendedProperties = extendedProperties;
+        mExtendedProperties = new ArrayList<>(extendedProperties);
     }
 
     private PresenceScanFilter(Parcel in) {
@@ -132,7 +132,7 @@
         }
         dest.writeInt(mExtendedProperties.size());
         if (!mExtendedProperties.isEmpty()) {
-            dest.writeList(mExtendedProperties);
+            dest.writeParcelableList(mExtendedProperties, 0);
         }
     }
 
diff --git a/nearby/framework/java/android/nearby/ScanRequest.java b/nearby/framework/java/android/nearby/ScanRequest.java
index c717ac7..9421820 100644
--- a/nearby/framework/java/android/nearby/ScanRequest.java
+++ b/nearby/framework/java/android/nearby/ScanRequest.java
@@ -62,6 +62,12 @@
      */
     public static final int SCAN_MODE_NO_POWER = -1;
     /**
+     * A special scan mode to indicate that client only wants to use CHRE to scan.
+     *
+     * @hide
+     */
+    public static final int SCAN_MODE_CHRE_ONLY = 3;
+    /**
      * Used to read a ScanRequest from a Parcel.
      */
     @NonNull
diff --git a/nearby/halfsheet/res/values-ky/strings.xml b/nearby/halfsheet/res/values-ky/strings.xml
index 812e0e8..b0dfe20 100644
--- a/nearby/halfsheet/res/values-ky/strings.xml
+++ b/nearby/halfsheet/res/values-ky/strings.xml
@@ -25,5 +25,5 @@
     <string name="paring_action_save" msgid="6259357442067880136">"Сактоо"</string>
     <string name="paring_action_connect" msgid="4801102939608129181">"Туташуу"</string>
     <string name="paring_action_launch" msgid="8940808384126591230">"Жөндөө"</string>
-    <string name="paring_action_settings" msgid="424875657242864302">"Жөндөөлөр"</string>
+    <string name="paring_action_settings" msgid="424875657242864302">"Параметрлер"</string>
 </resources>
diff --git a/nearby/halfsheet/src/com/android/nearby/halfsheet/HalfSheetActivity.java b/nearby/halfsheet/src/com/android/nearby/halfsheet/HalfSheetActivity.java
index 2a38b8a..07e5776 100644
--- a/nearby/halfsheet/src/com/android/nearby/halfsheet/HalfSheetActivity.java
+++ b/nearby/halfsheet/src/com/android/nearby/halfsheet/HalfSheetActivity.java
@@ -16,6 +16,8 @@
 
 package com.android.nearby.halfsheet;
 
+import static android.Manifest.permission.ACCESS_FINE_LOCATION;
+
 import static com.android.nearby.halfsheet.fragment.DevicePairingFragment.APP_LAUNCH_FRAGMENT_TYPE;
 import static com.android.server.nearby.common.bluetooth.fastpair.FastPairConstants.EXTRA_MODEL_ID;
 import static com.android.server.nearby.common.fastpair.service.UserActionHandlerBase.EXTRA_MAC_ADDRESS;
@@ -226,7 +228,8 @@
                                     EXTRA_HALF_SHEET_IS_RETROACTIVE,
                                     getIntent().getBooleanExtra(EXTRA_HALF_SHEET_IS_RETROACTIVE,
                                             false))
-                            .putExtra(EXTRA_MAC_ADDRESS, mScanFastPairStoreItem.getAddress()));
+                            .putExtra(EXTRA_MAC_ADDRESS, mScanFastPairStoreItem.getAddress()),
+                    ACCESS_FINE_LOCATION);
         }
     }
 
diff --git a/nearby/halfsheet/src/com/android/nearby/halfsheet/utils/BroadcastUtils.java b/nearby/halfsheet/src/com/android/nearby/halfsheet/utils/BroadcastUtils.java
index 467997c..2f1e90a 100644
--- a/nearby/halfsheet/src/com/android/nearby/halfsheet/utils/BroadcastUtils.java
+++ b/nearby/halfsheet/src/com/android/nearby/halfsheet/utils/BroadcastUtils.java
@@ -31,6 +31,13 @@
         context.sendBroadcast(intent);
     }
 
+    /**
+     * Helps send a broadcast with specified receiver permission.
+     */
+    public static void sendBroadcast(Context context, Intent intent, String receiverPermission) {
+        context.sendBroadcast(intent, receiverPermission);
+    }
+
     private BroadcastUtils() {
     }
 }
diff --git a/nearby/service/java/com/android/server/nearby/NearbyConfiguration.java b/nearby/service/java/com/android/server/nearby/NearbyConfiguration.java
index 8fdac87..0ed8fff 100644
--- a/nearby/service/java/com/android/server/nearby/NearbyConfiguration.java
+++ b/nearby/service/java/com/android/server/nearby/NearbyConfiguration.java
@@ -18,25 +18,40 @@
 
 import android.provider.DeviceConfig;
 
-import androidx.annotation.VisibleForTesting;
-
 /**
  * A utility class for encapsulating Nearby feature flag configurations.
  */
 public class NearbyConfiguration {
 
     /**
-     * Flag use to enable presence legacy broadcast.
+     * Flag used to enable presence legacy broadcast.
      */
     public static final String NEARBY_ENABLE_PRESENCE_BROADCAST_LEGACY =
             "nearby_enable_presence_broadcast_legacy";
+    /**
+     * Flag used to for minimum nano app version to make Nearby CHRE scan work.
+     */
+    public static final String NEARBY_MAINLINE_NANO_APP_MIN_VERSION =
+            "nearby_mainline_nano_app_min_version";
+
+    /**
+     * Flag used to allow test mode and customization.
+     */
+    public static final String NEARBY_SUPPORT_TEST_APP = "nearby_support_test_app";
 
     private boolean mEnablePresenceBroadcastLegacy;
 
+    private int mNanoAppMinVersion;
+
+    private boolean mSupportTestApp;
+
     public NearbyConfiguration() {
         mEnablePresenceBroadcastLegacy = getDeviceConfigBoolean(
                 NEARBY_ENABLE_PRESENCE_BROADCAST_LEGACY, false /* defaultValue */);
-
+        mNanoAppMinVersion = getDeviceConfigInt(
+                NEARBY_MAINLINE_NANO_APP_MIN_VERSION, 0 /* defaultValue */);
+        mSupportTestApp = getDeviceConfigBoolean(
+                NEARBY_SUPPORT_TEST_APP, false /* defaultValue */);
     }
 
     /**
@@ -46,13 +61,28 @@
         return mEnablePresenceBroadcastLegacy;
     }
 
+    public int getNanoAppMinVersion() {
+        return mNanoAppMinVersion;
+    }
+
+    /**
+     * @return {@code true} when in test mode and allows customization.
+     */
+    public boolean isTestAppSupported() {
+        return mSupportTestApp;
+    }
+
     private boolean getDeviceConfigBoolean(final String name, final boolean defaultValue) {
         final String value = getDeviceConfigProperty(name);
         return value != null ? Boolean.parseBoolean(value) : defaultValue;
     }
 
-    @VisibleForTesting
-    protected String getDeviceConfigProperty(String name) {
+    private int getDeviceConfigInt(final String name, final int defaultValue) {
+        final String value = getDeviceConfigProperty(name);
+        return value != null ? Integer.parseInt(value) : defaultValue;
+    }
+
+    private String getDeviceConfigProperty(String name) {
         return DeviceConfig.getProperty(DeviceConfig.NAMESPACE_TETHERING, name);
     }
 }
diff --git a/nearby/service/java/com/android/server/nearby/NearbyService.java b/nearby/service/java/com/android/server/nearby/NearbyService.java
index 5ebf1e5..a1bca19 100644
--- a/nearby/service/java/com/android/server/nearby/NearbyService.java
+++ b/nearby/service/java/com/android/server/nearby/NearbyService.java
@@ -29,6 +29,7 @@
 import android.content.Context;
 import android.content.Intent;
 import android.content.IntentFilter;
+import android.content.pm.PackageManager;
 import android.hardware.location.ContextHubManager;
 import android.nearby.BroadcastRequestParcelable;
 import android.nearby.IBroadcastListener;
@@ -41,8 +42,8 @@
 import com.android.internal.annotations.VisibleForTesting;
 import com.android.server.nearby.common.locator.LocatorContextWrapper;
 import com.android.server.nearby.fastpair.FastPairManager;
-import com.android.server.nearby.injector.ContextHubManagerAdapter;
 import com.android.server.nearby.injector.Injector;
+import com.android.server.nearby.presence.PresenceManager;
 import com.android.server.nearby.provider.BroadcastProviderManager;
 import com.android.server.nearby.provider.DiscoveryProviderManager;
 import com.android.server.nearby.provider.FastPairDataProvider;
@@ -53,10 +54,16 @@
 /** Service implementing nearby functionality. */
 public class NearbyService extends INearbyManager.Stub {
     public static final String TAG = "NearbyService";
+    // Sets to true to start BLE scan from PresenceManager for manual testing.
+    public static final Boolean MANUAL_TEST = false;
+    // Sets to true to support Mainline Test App.
+    // This will disable BLE privilege check and legacy broadcast support check.
+    public static final Boolean SUPPORT_TEST_APP = false;
 
     private final Context mContext;
     private Injector mInjector;
     private final FastPairManager mFastPairManager;
+    private final PresenceManager mPresenceManager;
     private final BroadcastReceiver mBluetoothReceiver =
             new BroadcastReceiver() {
                 @Override
@@ -84,6 +91,7 @@
         mBroadcastProviderManager = new BroadcastProviderManager(context, mInjector);
         final LocatorContextWrapper lcw = new LocatorContextWrapper(context, null);
         mFastPairManager = new FastPairManager(lcw);
+        mPresenceManager = new PresenceManager(lcw);
     }
 
     @VisibleForTesting
@@ -100,10 +108,7 @@
         CallerIdentity identity = CallerIdentity.fromBinder(mContext, packageName, attributionTag);
         DiscoveryPermissions.enforceDiscoveryPermission(mContext, identity);
 
-        if (mProviderManager.registerScanListener(scanRequest, listener, identity)) {
-            return NearbyManager.ScanStatus.SUCCESS;
-        }
-        return NearbyManager.ScanStatus.ERROR;
+        return mProviderManager.registerScanListener(scanRequest, listener, identity);
     }
 
     @Override
@@ -157,16 +162,22 @@
                 FastPairDataProvider.init(mContext);
                 break;
             case PHASE_BOOT_COMPLETED:
+                // mInjector needs to be initialized before mProviderManager.
                 if (mInjector instanceof SystemInjector) {
                     // The nearby service must be functioning after this boot phase.
                     ((SystemInjector) mInjector).initializeBluetoothAdapter();
                     // Initialize ContextManager for CHRE scan.
-                    ((SystemInjector) mInjector).initializeContextHubManagerAdapter();
+                    ((SystemInjector) mInjector).initializeContextHubManager();
                 }
+                mProviderManager.init();
                 mContext.registerReceiver(
                         mBluetoothReceiver,
                         new IntentFilter(BluetoothAdapter.ACTION_STATE_CHANGED));
                 mFastPairManager.initiate();
+                // Only enable for manual Presence test on device.
+                if (MANUAL_TEST) {
+                    mPresenceManager.initiate();
+                }
                 break;
         }
     }
@@ -178,15 +189,17 @@
      */
     @RequiresPermission(android.Manifest.permission.BLUETOOTH_PRIVILEGED)
     private static void enforceBluetoothPrivilegedPermission(Context context) {
-        context.enforceCallingOrSelfPermission(
-                android.Manifest.permission.BLUETOOTH_PRIVILEGED,
-                "Need BLUETOOTH PRIVILEGED permission");
+        if (!SUPPORT_TEST_APP) {
+            context.enforceCallingOrSelfPermission(
+                    android.Manifest.permission.BLUETOOTH_PRIVILEGED,
+                    "Need BLUETOOTH PRIVILEGED permission");
+        }
     }
 
     private static final class SystemInjector implements Injector {
         private final Context mContext;
         @Nullable private BluetoothAdapter mBluetoothAdapter;
-        @Nullable private ContextHubManagerAdapter mContextHubManagerAdapter;
+        @Nullable private ContextHubManager mContextHubManager;
         @Nullable private AppOpsManager mAppOpsManager;
 
         SystemInjector(Context context) {
@@ -201,8 +214,8 @@
 
         @Override
         @Nullable
-        public ContextHubManagerAdapter getContextHubManagerAdapter() {
-            return mContextHubManagerAdapter;
+        public ContextHubManager getContextHubManager() {
+            return mContextHubManager;
         }
 
         @Override
@@ -222,15 +235,13 @@
             mBluetoothAdapter = manager.getAdapter();
         }
 
-        synchronized void initializeContextHubManagerAdapter() {
-            if (mContextHubManagerAdapter != null) {
+        synchronized void initializeContextHubManager() {
+            if (mContextHubManager != null) {
                 return;
             }
-            ContextHubManager manager = mContext.getSystemService(ContextHubManager.class);
-            if (manager == null) {
-                return;
+            if (mContext.getPackageManager().hasSystemFeature(PackageManager.FEATURE_CONTEXT_HUB)) {
+                mContextHubManager = mContext.getSystemService(ContextHubManager.class);
             }
-            mContextHubManagerAdapter = new ContextHubManagerAdapter(manager);
         }
 
         synchronized void initializeAppOpsManager() {
diff --git a/nearby/service/java/com/android/server/nearby/common/ble/BleFilter.java b/nearby/service/java/com/android/server/nearby/common/ble/BleFilter.java
index 23d5170..dc4e11e 100644
--- a/nearby/service/java/com/android/server/nearby/common/ble/BleFilter.java
+++ b/nearby/service/java/com/android/server/nearby/common/ble/BleFilter.java
@@ -500,16 +500,16 @@
             return false;
         }
         BleFilter other = (BleFilter) obj;
-        return mDeviceName.equals(other.mDeviceName)
-                && mDeviceAddress.equals(other.mDeviceAddress)
+        return equal(mDeviceName, other.mDeviceName)
+                && equal(mDeviceAddress, other.mDeviceAddress)
                 && mManufacturerId == other.mManufacturerId
                 && Arrays.equals(mManufacturerData, other.mManufacturerData)
                 && Arrays.equals(mManufacturerDataMask, other.mManufacturerDataMask)
-                && mServiceDataUuid.equals(other.mServiceDataUuid)
+                && equal(mServiceDataUuid, other.mServiceDataUuid)
                 && Arrays.equals(mServiceData, other.mServiceData)
                 && Arrays.equals(mServiceDataMask, other.mServiceDataMask)
-                && mServiceUuid.equals(other.mServiceUuid)
-                && mServiceUuidMask.equals(other.mServiceUuidMask);
+                && equal(mServiceUuid, other.mServiceUuid)
+                && equal(mServiceUuidMask, other.mServiceUuidMask);
     }
 
     /** Builder class for {@link BleFilter}. */
@@ -743,4 +743,11 @@
         }
         return osFilterBuilder.build();
     }
+
+    /**
+     * equal() method for two possibly-null objects
+     */
+    private static boolean equal(@Nullable Object obj1, @Nullable Object obj2) {
+        return obj1 == obj2 || (obj1 != null && obj1.equals(obj2));
+    }
 }
diff --git a/nearby/service/java/com/android/server/nearby/common/ble/testing/FastPairTestData.java b/nearby/service/java/com/android/server/nearby/common/ble/testing/FastPairTestData.java
index f27899f..b4f46f8 100644
--- a/nearby/service/java/com/android/server/nearby/common/ble/testing/FastPairTestData.java
+++ b/nearby/service/java/com/android/server/nearby/common/ble/testing/FastPairTestData.java
@@ -46,6 +46,12 @@
     /** Model ID in {@link #getFastPairRecord()}. */
     public static final byte[] FAST_PAIR_MODEL_ID = Hex.stringToBytes("AABBCC");
 
+    /** An arbitrary BLE device address. */
+    public static final String DEVICE_ADDRESS = "00:00:00:00:00:01";
+
+    /** Arbitrary RSSI (Received Signal Strength Indicator). */
+    public static final int RSSI = -72;
+
     /** @see #getFastPairRecord() */
     public static byte[] newFastPairRecord(byte header, byte[] modelId) {
         return newFastPairRecord(
@@ -61,6 +67,45 @@
                         Hex.bytesToStringUppercase(serviceData)));
     }
 
+    // This is an example extended inquiry response for a phone with PANU
+    // and Hands-free Audio Gateway
+    public static byte[] eir_1 = {
+            0x06, // Length of this Data
+            0x09, // <<Complete Local Name>>
+            'P',
+            'h',
+            'o',
+            'n',
+            'e',
+            0x05, // Length of this Data
+            0x03, // <<Complete list of 16-bit Service UUIDs>>
+            0x15,
+            0x11, // PANU service class UUID
+            0x1F,
+            0x11, // Hands-free Audio Gateway service class UUID
+            0x01, // Length of this data
+            0x05, // <<Complete list of 32-bit Service UUIDs>>
+            0x11, // Length of this data
+            0x07, // <<Complete list of 128-bit Service UUIDs>>
+            0x01,
+            0x02,
+            0x03,
+            0x04,
+            0x05,
+            0x06,
+            0x07,
+            0x08, // Made up UUID
+            0x11,
+            0x12,
+            0x13,
+            0x14,
+            0x15,
+            0x16,
+            0x17,
+            0x18, //
+            0x00 // End of Data (Not transmitted over the air
+    };
+
     // This is an example of advertising data with AD types
     public static byte[] adv_1 = {
             0x02, // Length of this Data
@@ -138,4 +183,46 @@
             0x00
     };
 
+    // An Eddystone UID frame. go/eddystone for more info
+    public static byte[] eddystone_header_and_uuid = {
+            // BLE Flags
+            (byte) 0x02,
+            (byte) 0x01,
+            (byte) 0x06,
+            // Service UUID
+            (byte) 0x03,
+            (byte) 0x03,
+            (byte) 0xaa,
+            (byte) 0xfe,
+            // Service data header
+            (byte) 0x17,
+            (byte) 0x16,
+            (byte) 0xaa,
+            (byte) 0xfe,
+            // Eddystone frame type
+            (byte) 0x00,
+            // Ranging data
+            (byte) 0xb3,
+            // Eddystone ID namespace
+            (byte) 0x0a,
+            (byte) 0x09,
+            (byte) 0x08,
+            (byte) 0x07,
+            (byte) 0x06,
+            (byte) 0x05,
+            (byte) 0x04,
+            (byte) 0x03,
+            (byte) 0x02,
+            (byte) 0x01,
+            // Eddystone ID instance
+            (byte) 0x16,
+            (byte) 0x15,
+            (byte) 0x14,
+            (byte) 0x13,
+            (byte) 0x12,
+            (byte) 0x11,
+            // RFU
+            (byte) 0x00,
+            (byte) 0x00
+    };
 }
diff --git a/nearby/service/java/com/android/server/nearby/common/bluetooth/fastpair/Bytes.java b/nearby/service/java/com/android/server/nearby/common/bluetooth/fastpair/Bytes.java
index 637cd03..f6e77e6 100644
--- a/nearby/service/java/com/android/server/nearby/common/bluetooth/fastpair/Bytes.java
+++ b/nearby/service/java/com/android/server/nearby/common/bluetooth/fastpair/Bytes.java
@@ -17,6 +17,7 @@
 package com.android.server.nearby.common.bluetooth.fastpair;
 
 import androidx.annotation.Nullable;
+import androidx.annotation.VisibleForTesting;
 
 import java.nio.ByteBuffer;
 import java.nio.ByteOrder;
@@ -51,7 +52,8 @@
             return this.mByteOrder.equals(byteOrder) ? getBytes() : reverse(getBytes());
         }
 
-        private static byte[] reverse(byte[] bytes) {
+        @VisibleForTesting
+        static byte[] reverse(byte[] bytes) {
             byte[] reversedBytes = new byte[bytes.length];
             for (int i = 0; i < bytes.length; i++) {
                 reversedBytes[i] = bytes[bytes.length - i - 1];
diff --git a/nearby/service/java/com/android/server/nearby/common/bluetooth/fastpair/Event.java b/nearby/service/java/com/android/server/nearby/common/bluetooth/fastpair/Event.java
index 0b50dfd..7a0548b 100644
--- a/nearby/service/java/com/android/server/nearby/common/bluetooth/fastpair/Event.java
+++ b/nearby/service/java/com/android/server/nearby/common/bluetooth/fastpair/Event.java
@@ -133,14 +133,11 @@
             Event that = (Event) o;
             return this.mEventCode == that.getEventCode()
                     && this.mTimestamp == that.getTimestamp()
-                    && (this.mProfile == null
-                        ? that.getProfile() == null : this.mProfile.equals(that.getProfile()))
                     && (this.mBluetoothDevice == null
-                        ? that.getBluetoothDevice() == null :
-                            this.mBluetoothDevice.equals(that.getBluetoothDevice()))
-                    && (this.mException == null
-                        ?  that.getException() == null :
-                            this.mException.equals(that.getException()));
+                    ? that.getBluetoothDevice() == null :
+                    this.mBluetoothDevice.equals(that.getBluetoothDevice()))
+                    && (this.mProfile == null
+                    ? that.getProfile() == null : this.mProfile.equals(that.getProfile()));
         }
         return false;
     }
@@ -150,7 +147,6 @@
         return Objects.hash(mEventCode, mTimestamp, mProfile, mBluetoothDevice, mException);
     }
 
-
     /**
      * Builder
      */
diff --git a/nearby/service/java/com/android/server/nearby/common/bluetooth/fastpair/FastPairDualConnection.java b/nearby/service/java/com/android/server/nearby/common/bluetooth/fastpair/FastPairDualConnection.java
index 789ef59..60afa31 100644
--- a/nearby/service/java/com/android/server/nearby/common/bluetooth/fastpair/FastPairDualConnection.java
+++ b/nearby/service/java/com/android/server/nearby/common/bluetooth/fastpair/FastPairDualConnection.java
@@ -1993,7 +1993,8 @@
         return getLeState(bluetoothAdapter);
     }
 
-    private static int getLeState(android.bluetooth.BluetoothAdapter adapter) {
+    @VisibleForTesting
+    static int getLeState(android.bluetooth.BluetoothAdapter adapter) {
         try {
             return (Integer) Reflect.on(adapter).withMethod("getLeState").get();
         } catch (ReflectionException e) {
diff --git a/nearby/service/java/com/android/server/nearby/common/bluetooth/fastpair/Preferences.java b/nearby/service/java/com/android/server/nearby/common/bluetooth/fastpair/Preferences.java
index bb7b71b..eb5bad5 100644
--- a/nearby/service/java/com/android/server/nearby/common/bluetooth/fastpair/Preferences.java
+++ b/nearby/service/java/com/android/server/nearby/common/bluetooth/fastpair/Preferences.java
@@ -1042,104 +1042,6 @@
      */
     public static Builder builder() {
         return new Preferences.Builder()
-                .setGattOperationTimeoutSeconds(3)
-                .setGattConnectionTimeoutSeconds(15)
-                .setBluetoothToggleTimeoutSeconds(10)
-                .setBluetoothToggleSleepSeconds(2)
-                .setClassicDiscoveryTimeoutSeconds(10)
-                .setNumDiscoverAttempts(3)
-                .setDiscoveryRetrySleepSeconds(1)
-                .setIgnoreDiscoveryError(false)
-                .setSdpTimeoutSeconds(10)
-                .setNumSdpAttempts(3)
-                .setNumCreateBondAttempts(3)
-                .setNumConnectAttempts(1)
-                .setNumWriteAccountKeyAttempts(3)
-                .setToggleBluetoothOnFailure(false)
-                .setBluetoothStateUsesPolling(true)
-                .setBluetoothStatePollingMillis(1000)
-                .setNumAttempts(2)
-                .setEnableBrEdrHandover(false)
-                .setBrHandoverDataCharacteristicId(get16BitUuid(
-                        Constants.TransportDiscoveryService.BrHandoverDataCharacteristic.ID))
-                .setBluetoothSigDataCharacteristicId(get16BitUuid(
-                        Constants.TransportDiscoveryService.BluetoothSigDataCharacteristic.ID))
-                .setFirmwareVersionCharacteristicId(get16BitUuid(FirmwareVersionCharacteristic.ID))
-                .setBrTransportBlockDataDescriptorId(
-                        get16BitUuid(
-                                Constants.TransportDiscoveryService.BluetoothSigDataCharacteristic
-                                        .BrTransportBlockDataDescriptor.ID))
-                .setWaitForUuidsAfterBonding(true)
-                .setReceiveUuidsAndBondedEventBeforeClose(true)
-                .setRemoveBondTimeoutSeconds(5)
-                .setRemoveBondSleepMillis(1000)
-                .setCreateBondTimeoutSeconds(15)
-                .setHidCreateBondTimeoutSeconds(40)
-                .setProxyTimeoutSeconds(2)
-                .setRejectPhonebookAccess(false)
-                .setRejectMessageAccess(false)
-                .setRejectSimAccess(false)
-                .setAcceptPasskey(true)
-                .setSupportedProfileUuids(Constants.getSupportedProfiles())
-                .setWriteAccountKeySleepMillis(2000)
-                .setProviderInitiatesBondingIfSupported(false)
-                .setAttemptDirectConnectionWhenPreviouslyBonded(false)
-                .setAutomaticallyReconnectGattWhenNeeded(false)
-                .setSkipDisconnectingGattBeforeWritingAccountKey(false)
-                .setSkipConnectingProfiles(false)
-                .setIgnoreUuidTimeoutAfterBonded(false)
-                .setSpecifyCreateBondTransportType(false)
-                .setCreateBondTransportType(0 /*BluetoothDevice.TRANSPORT_AUTO*/)
-                .setIncreaseIntentFilterPriority(true)
-                .setEvaluatePerformance(false)
-                .setKeepSameAccountKeyWrite(true)
-                .setEnableNamingCharacteristic(false)
-                .setEnableFirmwareVersionCharacteristic(false)
-                .setIsRetroactivePairing(false)
-                .setNumSdpAttemptsAfterBonded(1)
-                .setSupportHidDevice(false)
-                .setEnablePairingWhileDirectlyConnecting(true)
-                .setAcceptConsentForFastPairOne(true)
-                .setGattConnectRetryTimeoutMillis(0)
-                .setEnable128BitCustomGattCharacteristicsId(true)
-                .setEnableSendExceptionStepToValidator(true)
-                .setEnableAdditionalDataTypeWhenActionOverBle(true)
-                .setCheckBondStateWhenSkipConnectingProfiles(true)
-                .setHandlePasskeyConfirmationByUi(false)
-                .setMoreEventLogForQuality(true)
-                .setRetryGattConnectionAndSecretHandshake(true)
-                .setGattConnectShortTimeoutMs(7000)
-                .setGattConnectLongTimeoutMs(15000)
-                .setGattConnectShortTimeoutRetryMaxSpentTimeMs(10000)
-                .setAddressRotateRetryMaxSpentTimeMs(15000)
-                .setPairingRetryDelayMs(100)
-                .setSecretHandshakeShortTimeoutMs(3000)
-                .setSecretHandshakeLongTimeoutMs(10000)
-                .setSecretHandshakeShortTimeoutRetryMaxSpentTimeMs(5000)
-                .setSecretHandshakeLongTimeoutRetryMaxSpentTimeMs(7000)
-                .setSecretHandshakeRetryAttempts(3)
-                .setSecretHandshakeRetryGattConnectionMaxSpentTimeMs(15000)
-                .setSignalLostRetryMaxSpentTimeMs(15000)
-                .setGattConnectionAndSecretHandshakeNoRetryGattError(ImmutableSet.of())
-                .setRetrySecretHandshakeTimeout(false)
-                .setLogUserManualRetry(true)
-                .setPairFailureCounts(0)
-                .setEnablePairFlowShowUiWithoutProfileConnection(true)
-                .setPairFailureCounts(0)
-                .setLogPairWithCachedModelId(true)
-                .setDirectConnectProfileIfModelIdInCache(false)
-                .setCachedDeviceAddress("")
-                .setPossibleCachedDeviceAddress("")
-                .setSameModelIdPairedDeviceCount(0)
-                .setIsDeviceFinishCheckAddressFromCache(true);
-    }
-
-    /**
-     * Constructs a builder from GmsLog.
-     */
-    // TODO(b/206668142): remove this builder once api is ready.
-    public static Builder builderFromGmsLog() {
-        return new Preferences.Builder()
                 .setGattOperationTimeoutSeconds(10)
                 .setGattConnectionTimeoutSeconds(15)
                 .setBluetoothToggleTimeoutSeconds(10)
@@ -1158,10 +1060,15 @@
                 .setBluetoothStatePollingMillis(1000)
                 .setNumAttempts(2)
                 .setEnableBrEdrHandover(false)
-                .setBrHandoverDataCharacteristicId((short) 11265)
-                .setBluetoothSigDataCharacteristicId((short) 11266)
-                .setFirmwareVersionCharacteristicId((short) 10790)
-                .setBrTransportBlockDataDescriptorId((short) 11267)
+                .setBrHandoverDataCharacteristicId(get16BitUuid(
+                        Constants.TransportDiscoveryService.BrHandoverDataCharacteristic.ID))
+                .setBluetoothSigDataCharacteristicId(get16BitUuid(
+                        Constants.TransportDiscoveryService.BluetoothSigDataCharacteristic.ID))
+                .setFirmwareVersionCharacteristicId(get16BitUuid(FirmwareVersionCharacteristic.ID))
+                .setBrTransportBlockDataDescriptorId(
+                        get16BitUuid(
+                                Constants.TransportDiscoveryService.BluetoothSigDataCharacteristic
+                                        .BrTransportBlockDataDescriptor.ID))
                 .setWaitForUuidsAfterBonding(true)
                 .setReceiveUuidsAndBondedEventBeforeClose(true)
                 .setRemoveBondTimeoutSeconds(5)
diff --git a/nearby/service/java/com/android/server/nearby/common/bluetooth/testability/android/bluetooth/BluetoothDevice.java b/nearby/service/java/com/android/server/nearby/common/bluetooth/testability/android/bluetooth/BluetoothDevice.java
index 5b45f61..b2002c5 100644
--- a/nearby/service/java/com/android/server/nearby/common/bluetooth/testability/android/bluetooth/BluetoothDevice.java
+++ b/nearby/service/java/com/android/server/nearby/common/bluetooth/testability/android/bluetooth/BluetoothDevice.java
@@ -187,12 +187,6 @@
         return mWrappedBluetoothDevice.createInsecureRfcommSocketToServiceRecord(uuid);
     }
 
-    /** See {@link android.bluetooth.BluetoothDevice#setPin(byte[])}. */
-    @TargetApi(19)
-    public boolean setPairingConfirmation(byte[] pin) {
-        return mWrappedBluetoothDevice.setPin(pin);
-    }
-
     /** See {@link android.bluetooth.BluetoothDevice#setPairingConfirmation(boolean)}. */
     public boolean setPairingConfirmation(boolean confirm) {
         return mWrappedBluetoothDevice.setPairingConfirmation(confirm);
diff --git a/nearby/service/java/com/android/server/nearby/common/bluetooth/testability/android/bluetooth/BluetoothGattServer.java b/nearby/service/java/com/android/server/nearby/common/bluetooth/testability/android/bluetooth/BluetoothGattServer.java
index 3f6f361..d4873fd 100644
--- a/nearby/service/java/com/android/server/nearby/common/bluetooth/testability/android/bluetooth/BluetoothGattServer.java
+++ b/nearby/service/java/com/android/server/nearby/common/bluetooth/testability/android/bluetooth/BluetoothGattServer.java
@@ -51,6 +51,11 @@
         return new BluetoothGattServer(instance);
     }
 
+    /** Unwraps a Bluetooth Gatt server. */
+    public android.bluetooth.BluetoothGattServer unwrap() {
+        return mWrappedInstance;
+    }
+
     /**
      * See {@link android.bluetooth.BluetoothGattServer#connect(
      * android.bluetooth.BluetoothDevice, boolean)}
diff --git a/nearby/service/java/com/android/server/nearby/common/bluetooth/testability/android/bluetooth/le/BluetoothLeAdvertiser.java b/nearby/service/java/com/android/server/nearby/common/bluetooth/testability/android/bluetooth/le/BluetoothLeAdvertiser.java
index 6fe4432..b2c61ab 100644
--- a/nearby/service/java/com/android/server/nearby/common/bluetooth/testability/android/bluetooth/le/BluetoothLeAdvertiser.java
+++ b/nearby/service/java/com/android/server/nearby/common/bluetooth/testability/android/bluetooth/le/BluetoothLeAdvertiser.java
@@ -71,4 +71,10 @@
         }
         return new BluetoothLeAdvertiser(bluetoothLeAdvertiser);
     }
+
+    /** Unwraps a Bluetooth LE advertiser. */
+    @Nullable
+    public android.bluetooth.le.BluetoothLeAdvertiser unwrap() {
+        return mWrappedInstance;
+    }
 }
diff --git a/nearby/service/java/com/android/server/nearby/common/bluetooth/testability/android/bluetooth/le/BluetoothLeScanner.java b/nearby/service/java/com/android/server/nearby/common/bluetooth/testability/android/bluetooth/le/BluetoothLeScanner.java
index 8a13abe..9b3447e 100644
--- a/nearby/service/java/com/android/server/nearby/common/bluetooth/testability/android/bluetooth/le/BluetoothLeScanner.java
+++ b/nearby/service/java/com/android/server/nearby/common/bluetooth/testability/android/bluetooth/le/BluetoothLeScanner.java
@@ -77,6 +77,12 @@
         mWrappedBluetoothLeScanner.stopScan(callbackIntent);
     }
 
+    /** Unwraps a Bluetooth LE scanner. */
+    @Nullable
+    public android.bluetooth.le.BluetoothLeScanner unwrap() {
+        return mWrappedBluetoothLeScanner;
+    }
+
     /** Wraps a Bluetooth LE scanner. */
     @Nullable
     public static BluetoothLeScanner wrap(
diff --git a/nearby/service/java/com/android/server/nearby/common/locator/Locator.java b/nearby/service/java/com/android/server/nearby/common/locator/Locator.java
index f8b43a6..2003335 100644
--- a/nearby/service/java/com/android/server/nearby/common/locator/Locator.java
+++ b/nearby/service/java/com/android/server/nearby/common/locator/Locator.java
@@ -110,7 +110,8 @@
         throw new IllegalStateException(errorMessage);
     }
 
-    private String getUnboundErrorMessage(Class<?> type) {
+    @VisibleForTesting
+    String getUnboundErrorMessage(Class<?> type) {
         StringBuilder sb = new StringBuilder();
         sb.append("Unbound type: ").append(type.getName()).append("\n").append(
                 "Searched locators:\n");
diff --git a/nearby/service/java/com/android/server/nearby/fastpair/FastPairAdvHandler.java b/nearby/service/java/com/android/server/nearby/fastpair/FastPairAdvHandler.java
index 2ecce47..d459329 100644
--- a/nearby/service/java/com/android/server/nearby/fastpair/FastPairAdvHandler.java
+++ b/nearby/service/java/com/android/server/nearby/fastpair/FastPairAdvHandler.java
@@ -31,10 +31,7 @@
 import com.android.server.nearby.common.ble.decode.FastPairDecoder;
 import com.android.server.nearby.common.ble.util.RangingUtils;
 import com.android.server.nearby.common.bloomfilter.BloomFilter;
-import com.android.server.nearby.common.bloomfilter.FastPairBloomFilterHasher;
 import com.android.server.nearby.common.locator.Locator;
-import com.android.server.nearby.fastpair.cache.DiscoveryItem;
-import com.android.server.nearby.fastpair.cache.FastPairCacheManager;
 import com.android.server.nearby.fastpair.halfsheet.FastPairHalfSheetManager;
 import com.android.server.nearby.provider.FastPairDataProvider;
 import com.android.server.nearby.util.DataUtils;
@@ -120,7 +117,7 @@
                 Log.e(TAG, "OEM does not construct fast pair data proxy correctly");
             }
         } else {
-            // Start to process bloom filter
+            // Start to process bloom filter. Yet to finish.
             try {
                 List<Account> accountList = mPairDataProvider.loadFastPairEligibleAccounts();
                 byte[] bloomFilterByteArray = FastPairDecoder
@@ -130,73 +127,9 @@
                 if (bloomFilterByteArray == null || bloomFilterByteArray.length == 0) {
                     return;
                 }
-                for (Account account : accountList) {
-                    List<Data.FastPairDeviceWithAccountKey> listDevices =
-                            mPairDataProvider.loadFastPairDeviceWithAccountKey(account);
-                    Data.FastPairDeviceWithAccountKey recognizedDevice =
-                            findRecognizedDevice(listDevices,
-                                    new BloomFilter(bloomFilterByteArray,
-                                            new FastPairBloomFilterHasher()), bloomFilterSalt);
-
-                    if (recognizedDevice != null) {
-                        Log.d(TAG, "find matched device show notification to remind"
-                                + " user to pair");
-                        // Check the distance of the device if the distance is larger than the
-                        // threshold
-                        // do not show half sheet.
-                        if (!isNearby(fastPairDevice.getRssi(),
-                                recognizedDevice.getDiscoveryItem().getTxPower() == 0
-                                        ? fastPairDevice.getTxPower()
-                                        : recognizedDevice.getDiscoveryItem().getTxPower())) {
-                            return;
-                        }
-                        // Check if the device is already paired
-                        List<Cache.StoredFastPairItem> storedFastPairItemList =
-                                Locator.get(mContext, FastPairCacheManager.class)
-                                        .getAllSavedStoredFastPairItem();
-                        Cache.StoredFastPairItem recognizedStoredFastPairItem =
-                                findRecognizedDeviceFromCachedItem(storedFastPairItemList,
-                                        new BloomFilter(bloomFilterByteArray,
-                                                new FastPairBloomFilterHasher()), bloomFilterSalt);
-                        if (recognizedStoredFastPairItem != null) {
-                            // The bloomfilter is recognized in the cache so the device is paired
-                            // before
-                            Log.d(TAG, "bloom filter is recognized in the cache");
-                            continue;
-                        } else {
-                            Log.d(TAG, "bloom filter is recognized not paired before should"
-                                    + "show subsequent pairing notification");
-                            if (mIsFirst) {
-                                mIsFirst = false;
-                                // Get full info from api the initial request will only return
-                                // part of the info due to size limit.
-                                List<Data.FastPairDeviceWithAccountKey> resList =
-                                        mPairDataProvider.loadFastPairDeviceWithAccountKey(account,
-                                                List.of(recognizedDevice.getAccountKey()
-                                                        .toByteArray()));
-                                if (resList != null && resList.size() > 0) {
-                                    //Saved device from footprint does not have ble address so
-                                    // fill ble address with current scan result.
-                                    Cache.StoredDiscoveryItem storedDiscoveryItem =
-                                            resList.get(0).getDiscoveryItem().toBuilder()
-                                                    .setMacAddress(
-                                                            fastPairDevice.getBluetoothAddress())
-                                                    .build();
-                                    Locator.get(mContext, FastPairController.class).pair(
-                                            new DiscoveryItem(mContext, storedDiscoveryItem),
-                                            resList.get(0).getAccountKey().toByteArray(),
-                                            /** companionApp=*/null);
-                                }
-                            }
-                        }
-
-                        return;
-                    }
-                }
             } catch (IllegalStateException e) {
                 Log.e(TAG, "OEM does not construct fast pair data proxy correctly");
             }
-
         }
     }
 
@@ -249,5 +182,4 @@
     boolean isNearby(int rssi, int txPower) {
         return RangingUtils.distanceFromRssiAndTxPower(rssi, txPower) < NEARBY_DISTANCE_THRESHOLD;
     }
-
 }
diff --git a/nearby/service/java/com/android/server/nearby/fastpair/FastPairManager.java b/nearby/service/java/com/android/server/nearby/fastpair/FastPairManager.java
index f368080..e3de4e2 100644
--- a/nearby/service/java/com/android/server/nearby/fastpair/FastPairManager.java
+++ b/nearby/service/java/com/android/server/nearby/fastpair/FastPairManager.java
@@ -242,7 +242,7 @@
 
             String modelId = item.getTriggerId();
             Preferences.Builder prefsBuilder =
-                    Preferences.builderFromGmsLog()
+                    Preferences.builder()
                             .setEnableBrEdrHandover(false)
                             .setIgnoreDiscoveryError(true);
             pairingProgressHandlerBase.onSetupPreferencesBuilder(prefsBuilder);
diff --git a/nearby/service/java/com/android/server/nearby/fastpair/cache/DiscoveryItem.java b/nearby/service/java/com/android/server/nearby/fastpair/cache/DiscoveryItem.java
index 6065f99..5ce4488 100644
--- a/nearby/service/java/com/android/server/nearby/fastpair/cache/DiscoveryItem.java
+++ b/nearby/service/java/com/android/server/nearby/fastpair/cache/DiscoveryItem.java
@@ -28,6 +28,7 @@
 import android.text.TextUtils;
 import android.util.Log;
 
+import com.android.internal.annotations.VisibleForTesting;
 import com.android.server.nearby.common.ble.util.RangingUtils;
 import com.android.server.nearby.common.fastpair.IconUtils;
 import com.android.server.nearby.common.locator.Locator;
@@ -106,15 +107,6 @@
     }
 
     /**
-     * Sets the store discovery item mac address.
-     */
-    public void setMacAddress(String address) {
-        mStoredDiscoveryItem = mStoredDiscoveryItem.toBuilder().setMacAddress(address).build();
-
-        mFastPairCacheManager.saveDiscoveryItem(this);
-    }
-
-    /**
      * Checks if the item is expired. Expired items are those over getItemExpirationMillis() eg. 2
      * minutes
      */
@@ -295,7 +287,8 @@
      * Returns the app name of discovery item.
      */
     @Nullable
-    private String getAppName() {
+    @VisibleForTesting
+    protected String getAppName() {
         return mStoredDiscoveryItem.getAppName();
     }
 
diff --git a/nearby/service/java/com/android/server/nearby/fastpair/cache/FastPairCacheManager.java b/nearby/service/java/com/android/server/nearby/fastpair/cache/FastPairCacheManager.java
index b840091..c6134f5 100644
--- a/nearby/service/java/com/android/server/nearby/fastpair/cache/FastPairCacheManager.java
+++ b/nearby/service/java/com/android/server/nearby/fastpair/cache/FastPairCacheManager.java
@@ -64,16 +64,6 @@
     }
 
     /**
-     * Checks if the entry can be auto deleted from the cache
-     */
-    public boolean isDeletable(Cache.ServerResponseDbItem entry) {
-        if (!entry.getExpirable()) {
-            return false;
-        }
-        return true;
-    }
-
-    /**
      * Save discovery item into database. Discovery item is item that discovered through Ble before
      * pairing success.
      */
diff --git a/nearby/service/java/com/android/server/nearby/fastpair/pairinghandler/PairingProgressHandlerBase.java b/nearby/service/java/com/android/server/nearby/fastpair/pairinghandler/PairingProgressHandlerBase.java
index ccd7e5e..5fb05d5 100644
--- a/nearby/service/java/com/android/server/nearby/fastpair/pairinghandler/PairingProgressHandlerBase.java
+++ b/nearby/service/java/com/android/server/nearby/fastpair/pairinghandler/PairingProgressHandlerBase.java
@@ -24,6 +24,7 @@
 import android.content.Context;
 import android.util.Log;
 
+import com.android.internal.annotations.VisibleForTesting;
 import com.android.server.nearby.common.bluetooth.fastpair.FastPairConnection;
 import com.android.server.nearby.common.bluetooth.fastpair.Preferences;
 import com.android.server.nearby.fastpair.cache.DiscoveryItem;
@@ -184,7 +185,8 @@
                 + maskBluetoothAddress(address));
     }
 
-    private static void optInFootprintsForInitialPairing(
+    @VisibleForTesting
+    static void optInFootprintsForInitialPairing(
             FootprintsDeviceManager footprints,
             DiscoveryItem item,
             byte[] accountKey,
diff --git a/nearby/service/java/com/android/server/nearby/injector/Injector.java b/nearby/service/java/com/android/server/nearby/injector/Injector.java
index 57784a9..3152ee6 100644
--- a/nearby/service/java/com/android/server/nearby/injector/Injector.java
+++ b/nearby/service/java/com/android/server/nearby/injector/Injector.java
@@ -18,6 +18,7 @@
 
 import android.app.AppOpsManager;
 import android.bluetooth.BluetoothAdapter;
+import android.hardware.location.ContextHubManager;
 
 /**
  * Nearby dependency injector. To be used for accessing various Nearby class instances and as a
@@ -29,7 +30,7 @@
     BluetoothAdapter getBluetoothAdapter();
 
     /** Get the ContextHubManagerAdapter for ChreDiscoveryProvider to scan. */
-    ContextHubManagerAdapter getContextHubManagerAdapter();
+    ContextHubManager getContextHubManager();
 
     /** Get the AppOpsManager to control access. */
     AppOpsManager getAppOpsManager();
diff --git a/nearby/service/java/com/android/server/nearby/presence/Advertisement.java b/nearby/service/java/com/android/server/nearby/presence/Advertisement.java
new file mode 100644
index 0000000..d42f6c7
--- /dev/null
+++ b/nearby/service/java/com/android/server/nearby/presence/Advertisement.java
@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.nearby.presence;
+
+import android.annotation.Nullable;
+import android.nearby.BroadcastRequest;
+import android.nearby.PresenceCredential;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/** A Nearby Presence advertisement to be advertised. */
+public abstract class Advertisement {
+
+    @BroadcastRequest.BroadcastVersion
+    int mVersion = BroadcastRequest.PRESENCE_VERSION_UNKNOWN;
+    int mLength;
+    @PresenceCredential.IdentityType int mIdentityType;
+    byte[] mIdentity;
+    byte[] mSalt;
+    List<Integer> mActions;
+
+    /** Serialize an {@link Advertisement} object into bytes. */
+    @Nullable
+    public byte[] toBytes() {
+        return new byte[0];
+    }
+
+    /** Returns the length of the advertisement. */
+    public int getLength() {
+        return mLength;
+    }
+
+    /** Returns the version in the advertisement. */
+    @BroadcastRequest.BroadcastVersion
+    public int getVersion() {
+        return mVersion;
+    }
+
+    /** Returns the identity type in the advertisement. */
+    @PresenceCredential.IdentityType
+    public int getIdentityType() {
+        return mIdentityType;
+    }
+
+    /** Returns the identity bytes in the advertisement. */
+    public byte[] getIdentity() {
+        return mIdentity.clone();
+    }
+
+    /** Returns the salt of the advertisement. */
+    public byte[] getSalt() {
+        return mSalt.clone();
+    }
+
+    /** Returns the actions in the advertisement. */
+    public List<Integer> getActions() {
+        return new ArrayList<>(mActions);
+    }
+}
diff --git a/nearby/service/java/com/android/server/nearby/presence/DataElementHeader.java b/nearby/service/java/com/android/server/nearby/presence/DataElementHeader.java
new file mode 100644
index 0000000..ae4a728
--- /dev/null
+++ b/nearby/service/java/com/android/server/nearby/presence/DataElementHeader.java
@@ -0,0 +1,266 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.nearby.presence;
+
+import android.annotation.Nullable;
+import android.nearby.BroadcastRequest;
+import android.nearby.DataElement;
+
+import com.android.internal.annotations.VisibleForTesting;
+import com.android.internal.util.Preconditions;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+import java.util.Objects;
+
+import javax.annotation.Nonnull;
+
+/**
+ * Represents a data element header in Nearby Presence.
+ * Each header has 3 parts: tag, length and style.
+ * Tag: 1 bit (MSB at each byte). 1 for extending, which means there will be more bytes after
+ * the current one for the header.
+ * Length: The total length of a Data Element field. Length is up to 127 and is limited within
+ * the entire first byte in the header. (7 bits, MSB is the tag).
+ * Type: Represents {@link DataElement.DataType}. There is no limit for the type number.
+ *
+ * @hide
+ */
+public class DataElementHeader {
+    // Each Data reserved MSB for tag.
+    static final int TAG_BITMASK = 0b10000000;
+    static final int TAG_OFFSET = 7;
+
+    // If the header is only 1 byte, it has the format: 0b0LLLTTTT. (L for length, T for type.)
+    static final int SINGLE_AVAILABLE_LENGTH_BIT = 3;
+    static final int SINGLE_AVAILABLE_TYPE_BIT = 4;
+    static final int SINGLE_LENGTH_BITMASK = 0b01110000;
+    static final int SINGLE_LENGTH_OFFSET = SINGLE_AVAILABLE_TYPE_BIT;
+    static final int SINGLE_TYPE_BITMASK = 0b00001111;
+
+    // If there are multiple data element headers.
+    // First byte is always the length.
+    static final int MULTIPLE_LENGTH_BYTE = 1;
+    // Each byte reserves MSB for tag.
+    static final int MULTIPLE_BITMASK = 0b01111111;
+
+    @BroadcastRequest.BroadcastVersion
+    private final int mVersion;
+    @DataElement.DataType
+    private final int mDataType;
+    private final int mDataLength;
+
+    DataElementHeader(@BroadcastRequest.BroadcastVersion int version,
+            @DataElement.DataType int dataType, int dataLength) {
+        Preconditions.checkArgument(version == BroadcastRequest.PRESENCE_VERSION_V1,
+                "DataElementHeader is only supported in V1.");
+        Preconditions.checkArgument(dataLength >= 0, "Length should not be negative.");
+        Preconditions.checkArgument(dataLength < (1 << TAG_OFFSET),
+                "Data element should be equal or shorter than 128.");
+
+        this.mVersion = version;
+        this.mDataType = dataType;
+        this.mDataLength = dataLength;
+    }
+
+    /**
+     * The total type of the data element.
+     */
+    @DataElement.DataType
+    public int getDataType() {
+        return mDataType;
+    }
+
+    /**
+     * The total length of a Data Element field.
+     */
+    public int getDataLength() {
+        return mDataLength;
+    }
+
+    /** Serialize a {@link DataElementHeader} object into bytes. */
+    public byte[] toBytes() {
+        Preconditions.checkState(mVersion == BroadcastRequest.PRESENCE_VERSION_V1,
+                "DataElementHeader is only supported in V1.");
+        // Only 1 byte needed for the header
+        if (mDataType < (1 << SINGLE_AVAILABLE_TYPE_BIT)
+                && mDataLength < (1 << SINGLE_AVAILABLE_LENGTH_BIT)) {
+            return new byte[]{createSingleByteHeader(mDataType, mDataLength)};
+        }
+
+        return createMultipleBytesHeader(mDataType, mDataLength);
+    }
+
+    /** Creates a {@link DataElementHeader} object from bytes. */
+    @Nullable
+    public static DataElementHeader fromBytes(@BroadcastRequest.BroadcastVersion int version,
+            @Nonnull byte[] bytes) {
+        Objects.requireNonNull(bytes, "Data parsed in for DataElement should not be null.");
+
+        if (bytes.length == 0) {
+            return null;
+        }
+
+        if (bytes.length == 1) {
+            if (isExtending(bytes[0])) {
+                throw new IllegalArgumentException("The header is not complete.");
+            }
+            return new DataElementHeader(BroadcastRequest.PRESENCE_VERSION_V1,
+                    getTypeSingleByte(bytes[0]), getLengthSingleByte(bytes[0]));
+        }
+
+        // The first byte should be length and there should be at least 1 more byte following to
+        // represent type.
+        // The last header byte's MSB should be 0.
+        if (!isExtending(bytes[0]) || isExtending(bytes[bytes.length - 1])) {
+            throw new IllegalArgumentException("The header format is wrong.");
+        }
+
+        return new DataElementHeader(version,
+                getTypeMultipleBytes(Arrays.copyOfRange(bytes, 1, bytes.length)),
+                getHeaderValue(bytes[0]));
+    }
+
+    /** Creates a header based on type and length.
+     * This is used when the type is <= 16 and length is <= 7. */
+    static byte createSingleByteHeader(int type, int length) {
+        return (byte) (convertTag(/* extend= */ false)
+                | convertLengthSingleByte(length)
+                | convertTypeSingleByte(type));
+    }
+
+    /** Creates a header based on type and length.
+     * This is used when the type is > 16 or length is > 7. */
+    static byte[] createMultipleBytesHeader(int type, int length) {
+        List<Byte> typeIntList = convertTypeMultipleBytes(type);
+        byte[] res = new byte[typeIntList.size() + MULTIPLE_LENGTH_BYTE];
+        int index = 0;
+        res[index++] = convertLengthMultipleBytes(length);
+
+        for (int typeInt : typeIntList) {
+            res[index++] = (byte) typeInt;
+        }
+        return res;
+    }
+
+    /** Constructs a Data Element header with length indicated in byte format.
+     * The most significant bit is the tag, 2- 4 bits are the length, 5 - 8 bits are the type.
+     */
+    @VisibleForTesting
+    static int convertLengthSingleByte(int length) {
+        Preconditions.checkArgument(length >= 0, "Length should not be negative.");
+        Preconditions.checkArgument(length < (1 << SINGLE_AVAILABLE_LENGTH_BIT),
+                "In single Data Element header, length should be shorter than 8.");
+        return (length << SINGLE_LENGTH_OFFSET) & SINGLE_LENGTH_BITMASK;
+    }
+
+    /** Constructs a Data Element header with type indicated in byte format.
+     * The most significant bit is the tag, 2- 4 bits are the length, 5 - 8 bits are the type.
+     */
+    @VisibleForTesting
+    static int convertTypeSingleByte(int type) {
+        Preconditions.checkArgument(type >= 0, "Type should not be negative.");
+        Preconditions.checkArgument(type < (1 << SINGLE_AVAILABLE_TYPE_BIT),
+                "In single Data Element header, type should be smaller than 16.");
+
+        return type & SINGLE_TYPE_BITMASK;
+    }
+
+    /**
+     * Gets the length of Data Element from the header. (When there is only 1 byte of header)
+     */
+    static int getLengthSingleByte(byte header) {
+        Preconditions.checkArgument(!isExtending(header),
+                "Cannot apply this method for the extending header.");
+        return (header & SINGLE_LENGTH_BITMASK) >> SINGLE_LENGTH_OFFSET;
+    }
+
+    /**
+     * Gets the type of Data Element from the header. (When there is only 1 byte of header)
+     */
+    static int getTypeSingleByte(byte header) {
+        Preconditions.checkArgument(!isExtending(header),
+                "Cannot apply this method for the extending header.");
+        return header & SINGLE_TYPE_BITMASK;
+    }
+
+    /** Creates a DE(data element) header based on length.
+     * This is used when header is more than 1 byte. The first byte is always the length.
+     */
+    static byte convertLengthMultipleBytes(int length) {
+        Preconditions.checkArgument(length < (1 << TAG_OFFSET),
+                "Data element should be equal or shorter than 128.");
+        return (byte) (convertTag(/* extend= */ true) | (length & MULTIPLE_BITMASK));
+    }
+
+    /** Creates a DE(data element) header based on type.
+     * This is used when header is more than 1 byte. The first byte is always the length.
+     */
+    @VisibleForTesting
+    static List<Byte> convertTypeMultipleBytes(int type) {
+        List<Byte> typeBytes = new ArrayList<>();
+        while (type > 0) {
+            byte current = (byte) (type & MULTIPLE_BITMASK);
+            type = type >> TAG_OFFSET;
+            typeBytes.add(current);
+        }
+
+        Collections.reverse(typeBytes);
+        int size = typeBytes.size();
+        // The last byte's MSB should be 0.
+        for (int i = 0; i < size - 1; i++) {
+            typeBytes.set(i, (byte) (convertTag(/* extend= */ true) | typeBytes.get(i)));
+        }
+        return typeBytes;
+    }
+
+    /** Creates a DE(data element) header based on type.
+     * This is used when header is more than 1 byte. The first byte is always the length.
+     * Uses Integer when doing bit operation to avoid error.
+     */
+    @VisibleForTesting
+    static int getTypeMultipleBytes(byte[] typeByteArray) {
+        int type = 0;
+        int size = typeByteArray.length;
+        for (int i = 0; i < size; i++) {
+            type = (type << TAG_OFFSET) | getHeaderValue(typeByteArray[i]);
+        }
+        return type;
+    }
+
+    /** Gets the integer value of the 7 bits in the header. (The MSB is tag) */
+    @VisibleForTesting
+    static int getHeaderValue(byte header) {
+        return (header & MULTIPLE_BITMASK);
+    }
+
+    /** Sets the MSB of the header byte. If this is the last byte of headers, MSB is 0.
+     * If there are at least header following, the MSB is 1.
+     */
+    @VisibleForTesting
+    static byte convertTag(boolean extend) {
+        return (byte) (extend ? 0b10000000 : 0b00000000);
+    }
+
+    /** Returns {@code true} if there are at least 1 byte of header after the current one. */
+    @VisibleForTesting
+    static boolean isExtending(byte header) {
+        return (header & TAG_BITMASK) != 0;
+    }
+}
diff --git a/nearby/service/java/com/android/server/nearby/presence/ExtendedAdvertisement.java b/nearby/service/java/com/android/server/nearby/presence/ExtendedAdvertisement.java
new file mode 100644
index 0000000..34a7514
--- /dev/null
+++ b/nearby/service/java/com/android/server/nearby/presence/ExtendedAdvertisement.java
@@ -0,0 +1,409 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.nearby.presence;
+
+import static com.android.server.nearby.NearbyService.TAG;
+
+import android.annotation.Nullable;
+import android.nearby.BroadcastRequest;
+import android.nearby.DataElement;
+import android.nearby.PresenceBroadcastRequest;
+import android.nearby.PresenceCredential;
+import android.nearby.PublicCredential;
+import android.util.Log;
+
+import com.android.server.nearby.util.encryption.Cryptor;
+import com.android.server.nearby.util.encryption.CryptorImpFake;
+import com.android.server.nearby.util.encryption.CryptorImpIdentityV1;
+import com.android.server.nearby.util.encryption.CryptorImpV1;
+
+import java.nio.ByteBuffer;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.util.Objects;
+
+/**
+ * A Nearby Presence advertisement to be advertised on BT5.0 devices.
+ *
+ * <p>Serializable between Java object and bytes formats. Java object is used at the upper scanning
+ * and advertising interface as an abstraction of the actual bytes. Bytes format is used at the
+ * underlying BLE and mDNS stacks, which do necessary slicing and merging based on advertising
+ * capacities.
+ *
+ * The extended advertisement is defined in the format below:
+ * Header (1 byte) | salt (1+2 bytes) | Identity + filter (2+16 bytes)
+ * | repeated DE fields (various bytes)
+ * The header contains:
+ * version (3 bits) | 5 bit reserved for future use (RFU)
+ */
+public class ExtendedAdvertisement extends Advertisement{
+
+    public static final int SALT_DATA_LENGTH = 2;
+
+    static final int HEADER_LENGTH = 1;
+
+    static final int IDENTITY_DATA_LENGTH = 16;
+
+    private final List<DataElement> mDataElements;
+
+    private final byte[] mAuthenticityKey;
+
+    // All Data Elements including salt and identity.
+    // Each list item (byte array) is a Data Element (with its header).
+    private final List<byte[]> mCompleteDataElementsBytes;
+    // Signature generated from data elements.
+    private final byte[] mHmacTag;
+
+    /**
+     * Creates an {@link ExtendedAdvertisement} from a Presence Broadcast Request.
+     * @return {@link ExtendedAdvertisement} object. {@code null} when the request is illegal.
+     */
+    @Nullable
+    public static ExtendedAdvertisement createFromRequest(PresenceBroadcastRequest request) {
+        if (request.getVersion() != BroadcastRequest.PRESENCE_VERSION_V1) {
+            Log.v(TAG, "ExtendedAdvertisement only supports V1 now.");
+            return null;
+        }
+
+        byte[] salt = request.getSalt();
+        if (salt.length != SALT_DATA_LENGTH) {
+            Log.v(TAG, "Salt does not match correct length");
+            return null;
+        }
+
+        byte[] identity = request.getCredential().getMetadataEncryptionKey();
+        byte[] authenticityKey = request.getCredential().getAuthenticityKey();
+        if (identity.length != IDENTITY_DATA_LENGTH) {
+            Log.v(TAG, "Identity does not match correct length");
+            return null;
+        }
+
+        List<Integer> actions = request.getActions();
+        if (actions.isEmpty()) {
+            Log.v(TAG, "ExtendedAdvertisement must contain at least one action");
+            return null;
+        }
+
+        List<DataElement> dataElements = request.getExtendedProperties();
+        return new ExtendedAdvertisement(
+                request.getCredential().getIdentityType(),
+                identity,
+                salt,
+                authenticityKey,
+                actions,
+                dataElements);
+    }
+
+    /** Serialize an {@link ExtendedAdvertisement} object into bytes with {@link DataElement}s */
+    @Nullable
+    public byte[] toBytes() {
+        ByteBuffer buffer = ByteBuffer.allocate(getLength());
+
+        // Header
+        buffer.put(ExtendedAdvertisementUtils.constructHeader(getVersion()));
+
+        // Salt
+        buffer.put(mCompleteDataElementsBytes.get(0));
+
+        // Identity
+        buffer.put(mCompleteDataElementsBytes.get(1));
+
+        List<Byte> rawDataBytes = new ArrayList<>();
+        // Data Elements (Already includes salt and identity)
+        for (int i = 2; i < mCompleteDataElementsBytes.size(); i++) {
+            byte[] dataElementBytes = mCompleteDataElementsBytes.get(i);
+            for (Byte b : dataElementBytes) {
+                rawDataBytes.add(b);
+            }
+        }
+
+        byte[] dataElements = new byte[rawDataBytes.size()];
+        for (int i = 0; i < rawDataBytes.size(); i++) {
+            dataElements[i] = rawDataBytes.get(i);
+        }
+
+        buffer.put(
+                getCryptor(/* encrypt= */ true).encrypt(dataElements, getSalt(), mAuthenticityKey));
+
+        buffer.put(mHmacTag);
+
+        return buffer.array();
+    }
+
+    /** Deserialize from bytes into an {@link ExtendedAdvertisement} object.
+     * {@code null} when there is something when parsing.
+     */
+    @Nullable
+    public static ExtendedAdvertisement fromBytes(byte[] bytes, PublicCredential publicCredential) {
+        @BroadcastRequest.BroadcastVersion
+        int version = ExtendedAdvertisementUtils.getVersion(bytes);
+        if (version != PresenceBroadcastRequest.PRESENCE_VERSION_V1) {
+            Log.v(TAG, "ExtendedAdvertisement is used in V1 only and version is " + version);
+            return null;
+        }
+
+        byte[] authenticityKey = publicCredential.getAuthenticityKey();
+
+        int index = HEADER_LENGTH;
+        // Salt
+        byte[] saltHeaderArray = ExtendedAdvertisementUtils.getDataElementHeader(bytes, index);
+        DataElementHeader saltHeader = DataElementHeader.fromBytes(version, saltHeaderArray);
+        if (saltHeader == null || saltHeader.getDataType() != DataElement.DataType.SALT) {
+            Log.v(TAG, "First data element has to be salt.");
+            return null;
+        }
+        index += saltHeaderArray.length;
+        byte[] salt = new byte[saltHeader.getDataLength()];
+        for (int i = 0; i < saltHeader.getDataLength(); i++) {
+            salt[i] = bytes[index++];
+        }
+
+        // Identity
+        byte[] identityHeaderArray = ExtendedAdvertisementUtils.getDataElementHeader(bytes, index);
+        DataElementHeader identityHeader =
+                DataElementHeader.fromBytes(version, identityHeaderArray);
+        if (identityHeader == null) {
+            Log.v(TAG, "The second element has to be identity.");
+            return null;
+        }
+        index += identityHeaderArray.length;
+        @PresenceCredential.IdentityType int identityType =
+                toPresenceCredentialIdentityType(identityHeader.getDataType());
+        if (identityType == PresenceCredential.IDENTITY_TYPE_UNKNOWN) {
+            Log.v(TAG, "The identity type is unknown.");
+            return null;
+        }
+        byte[] encryptedIdentity = new byte[identityHeader.getDataLength()];
+        for (int i = 0; i < identityHeader.getDataLength(); i++) {
+            encryptedIdentity[i] = bytes[index++];
+        }
+        byte[] identity =
+                CryptorImpIdentityV1
+                        .getInstance().decrypt(encryptedIdentity, salt, authenticityKey);
+
+        Cryptor cryptor = getCryptor(/* encrypt= */ true);
+        byte[] encryptedDataElements =
+                new byte[bytes.length - index - cryptor.getSignatureLength()];
+        // Decrypt other data elements
+        System.arraycopy(bytes, index, encryptedDataElements, 0, encryptedDataElements.length);
+        byte[] decryptedDataElements =
+                cryptor.decrypt(encryptedDataElements, salt, authenticityKey);
+        if (decryptedDataElements == null) {
+            return null;
+        }
+
+        // Verify the computed HMAC tag is equal to HMAC tag in advertisement
+        if (cryptor.getSignatureLength() > 0) {
+            byte[] expectedHmacTag = new byte[cryptor.getSignatureLength()];
+            System.arraycopy(
+                    bytes, bytes.length - cryptor.getSignatureLength(),
+                    expectedHmacTag, 0, cryptor.getSignatureLength());
+            if (!cryptor.verify(decryptedDataElements, authenticityKey, expectedHmacTag)) {
+                Log.e(TAG, "HMAC tags not match.");
+                return null;
+            }
+        }
+
+        int dataElementArrayIndex = 0;
+        // Other Data Elements
+        List<Integer> actions = new ArrayList<>();
+        List<DataElement> dataElements = new ArrayList<>();
+        while (dataElementArrayIndex < decryptedDataElements.length) {
+            byte[] deHeaderArray = ExtendedAdvertisementUtils
+                    .getDataElementHeader(decryptedDataElements, dataElementArrayIndex);
+            DataElementHeader deHeader = DataElementHeader.fromBytes(version, deHeaderArray);
+            dataElementArrayIndex += deHeaderArray.length;
+
+            @DataElement.DataType int type = Objects.requireNonNull(deHeader).getDataType();
+            if (type == DataElement.DataType.ACTION) {
+                if (deHeader.getDataLength() != 1) {
+                    Log.v(TAG, "Action id should only 1 byte.");
+                    return null;
+                }
+                actions.add((int) decryptedDataElements[dataElementArrayIndex++]);
+            } else {
+                if (isSaltOrIdentity(type)) {
+                    Log.v(TAG, "Type " + type + " is duplicated. There should be only one salt"
+                            + " and one identity in the advertisement.");
+                    return null;
+                }
+                byte[] deData = new byte[deHeader.getDataLength()];
+                for (int i = 0; i < deHeader.getDataLength(); i++) {
+                    deData[i] = decryptedDataElements[dataElementArrayIndex++];
+                }
+                dataElements.add(new DataElement(type, deData));
+            }
+        }
+
+        return new ExtendedAdvertisement(identityType, identity, salt, authenticityKey, actions,
+                dataElements);
+    }
+
+    /** Returns the {@link DataElement}s in the advertisement. */
+    public List<DataElement> getDataElements() {
+        return new ArrayList<>(mDataElements);
+    }
+
+    /** Returns the {@link DataElement}s in the advertisement according to the key. */
+    public List<DataElement> getDataElements(@DataElement.DataType int key) {
+        List<DataElement> res = new ArrayList<>();
+        for (DataElement dataElement : mDataElements) {
+            if (key == dataElement.getKey()) {
+                res.add(dataElement);
+            }
+        }
+        return res;
+    }
+
+    @Override
+    public String toString() {
+        return String.format(
+                "ExtendedAdvertisement:"
+                        + "<VERSION: %s, length: %s, dataElementCount: %s, identityType: %s,"
+                        + " identity: %s, salt: %s, actions: %s>",
+                getVersion(),
+                getLength(),
+                getDataElements().size(),
+                getIdentityType(),
+                Arrays.toString(getIdentity()),
+                Arrays.toString(getSalt()),
+                getActions());
+    }
+
+    ExtendedAdvertisement(
+            @PresenceCredential.IdentityType int identityType,
+            byte[] identity,
+            byte[] salt,
+            byte[] authenticityKey,
+            List<Integer> actions,
+            List<DataElement> dataElements) {
+        this.mVersion = BroadcastRequest.PRESENCE_VERSION_V1;
+        this.mIdentityType = identityType;
+        this.mIdentity = identity;
+        this.mSalt = salt;
+        this.mAuthenticityKey = authenticityKey;
+        this.mActions = actions;
+        this.mDataElements = dataElements;
+        this.mCompleteDataElementsBytes = new ArrayList<>();
+
+        int length = HEADER_LENGTH; // header
+
+        // Salt
+        DataElement saltElement = new DataElement(DataElement.DataType.SALT, salt);
+        byte[] saltByteArray = ExtendedAdvertisementUtils.convertDataElementToBytes(saltElement);
+        mCompleteDataElementsBytes.add(saltByteArray);
+        length += saltByteArray.length;
+
+        // Identity
+        byte[] encryptedIdentity =
+                CryptorImpIdentityV1.getInstance().encrypt(identity, salt, authenticityKey);
+        DataElement identityElement = new DataElement(toDataType(identityType), encryptedIdentity);
+        byte[] identityByteArray =
+                ExtendedAdvertisementUtils.convertDataElementToBytes(identityElement);
+        mCompleteDataElementsBytes.add(identityByteArray);
+        length += identityByteArray.length;
+
+        List<Byte> dataElementBytes = new ArrayList<>();
+        // Intents
+        for (int action : mActions) {
+            DataElement actionElement = new DataElement(DataElement.DataType.ACTION,
+                    new byte[] {(byte) action});
+            byte[] intentByteArray =
+                    ExtendedAdvertisementUtils.convertDataElementToBytes(actionElement);
+            mCompleteDataElementsBytes.add(intentByteArray);
+            for (Byte b : intentByteArray) {
+                dataElementBytes.add(b);
+            }
+        }
+
+        // Data Elements (Extended properties)
+        for (DataElement dataElement : mDataElements) {
+            byte[] deByteArray = ExtendedAdvertisementUtils.convertDataElementToBytes(dataElement);
+            mCompleteDataElementsBytes.add(deByteArray);
+            for (Byte b : deByteArray) {
+                dataElementBytes.add(b);
+            }
+        }
+
+        byte[] data = new byte[dataElementBytes.size()];
+        for (int i = 0; i < dataElementBytes.size(); i++) {
+            data[i] = dataElementBytes.get(i);
+        }
+        Cryptor cryptor = getCryptor(/* encrypt= */ true);
+        byte[] encryptedDeBytes = cryptor.encrypt(data, salt, authenticityKey);
+
+        length += encryptedDeBytes.length;
+
+        // Signature
+        byte[] hmacTag = Objects.requireNonNull(cryptor.sign(data, authenticityKey));
+        mHmacTag = hmacTag;
+        length += hmacTag.length;
+
+        this.mLength = length;
+    }
+
+    @PresenceCredential.IdentityType
+    private static int toPresenceCredentialIdentityType(@DataElement.DataType int type) {
+        switch (type) {
+            case DataElement.DataType.PRIVATE_IDENTITY:
+                return PresenceCredential.IDENTITY_TYPE_PRIVATE;
+            case DataElement.DataType.PROVISIONED_IDENTITY:
+                return PresenceCredential.IDENTITY_TYPE_PROVISIONED;
+            case DataElement.DataType.TRUSTED_IDENTITY:
+                return PresenceCredential.IDENTITY_TYPE_TRUSTED;
+            case DataElement.DataType.PUBLIC_IDENTITY:
+            default:
+                return PresenceCredential.IDENTITY_TYPE_UNKNOWN;
+        }
+    }
+
+    @DataElement.DataType
+    private static int toDataType(@PresenceCredential.IdentityType int identityType) {
+        switch (identityType) {
+            case PresenceCredential.IDENTITY_TYPE_PRIVATE:
+                return DataElement.DataType.PRIVATE_IDENTITY;
+            case PresenceCredential.IDENTITY_TYPE_PROVISIONED:
+                return DataElement.DataType.PROVISIONED_IDENTITY;
+            case PresenceCredential.IDENTITY_TYPE_TRUSTED:
+                return DataElement.DataType.TRUSTED_IDENTITY;
+            case PresenceCredential.IDENTITY_TYPE_UNKNOWN:
+            default:
+                return DataElement.DataType.PUBLIC_IDENTITY;
+        }
+    }
+
+    /**
+     * Returns {@code true} if the given {@link DataElement.DataType} is salt, or one of the
+     * identities. Identities should be able to convert to {@link PresenceCredential.IdentityType}s.
+     */
+    private static boolean isSaltOrIdentity(@DataElement.DataType int type) {
+        return type == DataElement.DataType.SALT || type == DataElement.DataType.PRIVATE_IDENTITY
+                || type == DataElement.DataType.TRUSTED_IDENTITY
+                || type == DataElement.DataType.PROVISIONED_IDENTITY
+                || type == DataElement.DataType.PUBLIC_IDENTITY;
+    }
+
+    private static Cryptor getCryptor(boolean encrypt) {
+        if (encrypt) {
+            Log.d(TAG, "get V1 Cryptor");
+            return CryptorImpV1.getInstance();
+        }
+        Log.d(TAG, "get fake Cryptor");
+        return CryptorImpFake.getInstance();
+    }
+}
diff --git a/nearby/service/java/com/android/server/nearby/presence/ExtendedAdvertisementUtils.java b/nearby/service/java/com/android/server/nearby/presence/ExtendedAdvertisementUtils.java
new file mode 100644
index 0000000..06d0f2b
--- /dev/null
+++ b/nearby/service/java/com/android/server/nearby/presence/ExtendedAdvertisementUtils.java
@@ -0,0 +1,100 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.nearby.presence;
+
+import static com.android.server.nearby.presence.ExtendedAdvertisement.HEADER_LENGTH;
+
+import android.annotation.SuppressLint;
+import android.nearby.BroadcastRequest;
+import android.nearby.DataElement;
+
+import com.android.internal.util.Preconditions;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Provides serialization and deserialization util methods for {@link ExtendedAdvertisement}.
+ */
+public final class ExtendedAdvertisementUtils {
+
+    // Advertisement header related static fields.
+    private static final int VERSION_MASK = 0b11100000;
+    private static final int VERSION_MASK_AFTER_SHIT = 0b00000111;
+    private static final int HEADER_INDEX = 0;
+    private static final int HEADER_VERSION_OFFSET = 5;
+
+    /**
+     * Constructs the header of a {@link ExtendedAdvertisement}.
+     * 3 bit version, and 5 bit reserved for future use (RFU).
+     */
+    public static byte constructHeader(@BroadcastRequest.BroadcastVersion int version) {
+        return (byte) ((version << 5) & VERSION_MASK);
+    }
+
+    /** Returns the {@link BroadcastRequest.BroadcastVersion} from the advertisement
+     * in bytes format. */
+    public static int getVersion(byte[] advertisement) {
+        if (advertisement.length < HEADER_LENGTH) {
+            throw new IllegalArgumentException("Advertisement must contain header");
+        }
+        return ((advertisement[HEADER_INDEX] & VERSION_MASK) >> HEADER_VERSION_OFFSET)
+                & VERSION_MASK_AFTER_SHIT;
+    }
+
+    /** Returns the {@link DataElementHeader} from the advertisement in bytes format. */
+    public static byte[] getDataElementHeader(byte[] advertisement, int startIndex) {
+        Preconditions.checkArgument(startIndex < advertisement.length,
+                "Advertisement has no longer data left.");
+        List<Byte> headerBytes = new ArrayList<>();
+        while (startIndex < advertisement.length) {
+            byte current = advertisement[startIndex];
+            headerBytes.add(current);
+            if (!DataElementHeader.isExtending(current)) {
+                int size = headerBytes.size();
+                byte[] res = new byte[size];
+                for (int i = 0; i < size; i++) {
+                    res[i] = headerBytes.get(i);
+                }
+                return res;
+            }
+            startIndex++;
+        }
+        throw new IllegalArgumentException("There is no end of the DataElement header.");
+    }
+
+    /**
+     * Constructs {@link DataElement}, including header(s) and actual data element data.
+     *
+     * Suppresses warning because {@link DataElement} checks isValidType in constructor.
+     */
+    @SuppressLint("WrongConstant")
+    public static byte[] convertDataElementToBytes(DataElement dataElement) {
+        @DataElement.DataType int type = dataElement.getKey();
+        byte[] data = dataElement.getValue();
+        DataElementHeader header = new DataElementHeader(BroadcastRequest.PRESENCE_VERSION_V1,
+                type, data.length);
+        byte[] headerByteArray = header.toBytes();
+
+        byte[] res = new byte[headerByteArray.length + data.length];
+        System.arraycopy(headerByteArray, 0, res, 0, headerByteArray.length);
+        System.arraycopy(data, 0, res, headerByteArray.length, data.length);
+        return res;
+    }
+
+    private ExtendedAdvertisementUtils() {}
+}
diff --git a/nearby/service/java/com/android/server/nearby/presence/FastAdvertisement.java b/nearby/service/java/com/android/server/nearby/presence/FastAdvertisement.java
index e4df673..ae53ada 100644
--- a/nearby/service/java/com/android/server/nearby/presence/FastAdvertisement.java
+++ b/nearby/service/java/com/android/server/nearby/presence/FastAdvertisement.java
@@ -24,7 +24,6 @@
 import com.android.internal.util.Preconditions;
 
 import java.nio.ByteBuffer;
-import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
 
@@ -42,7 +41,7 @@
 // The header contains:
 // version (3 bits) | provision_mode_flag (1 bit) | identity_type (3 bits) |
 // extended_advertisement_mode (1 bit)
-public class FastAdvertisement {
+public class FastAdvertisement extends Advertisement {
 
     private static final int FAST_ADVERTISEMENT_MAX_LENGTH = 24;
 
@@ -85,7 +84,8 @@
                 (byte) request.getTxPower());
     }
 
-    /** Serialize an {@link FastAdvertisement} object into bytes. */
+    /** Serialize a {@link FastAdvertisement} object into bytes. */
+    @Override
     public byte[] toBytes() {
         ByteBuffer buffer = ByteBuffer.allocate(getLength());
 
@@ -100,18 +100,8 @@
         return buffer.array();
     }
 
-    private final int mLength;
-
     private final int mLtvFieldCount;
 
-    @PresenceCredential.IdentityType private final int mIdentityType;
-
-    private final byte[] mIdentity;
-
-    private final byte[] mSalt;
-
-    private final List<Integer> mActions;
-
     @Nullable
     private final Byte mTxPower;
 
@@ -121,6 +111,7 @@
             byte[] salt,
             List<Integer> actions,
             @Nullable Byte txPower) {
+        this.mVersion = BroadcastRequest.PRESENCE_VERSION_V0;
         this.mIdentityType = identityType;
         this.mIdentity = identity;
         this.mSalt = salt;
@@ -143,44 +134,12 @@
                 "FastAdvertisement exceeds maximum length");
     }
 
-    /** Returns the version in the advertisement. */
-    @BroadcastRequest.BroadcastVersion
-    public int getVersion() {
-        return BroadcastRequest.PRESENCE_VERSION_V0;
-    }
-
-    /** Returns the identity type in the advertisement. */
-    @PresenceCredential.IdentityType
-    public int getIdentityType() {
-        return mIdentityType;
-    }
-
-    /** Returns the identity bytes in the advertisement. */
-    public byte[] getIdentity() {
-        return mIdentity.clone();
-    }
-
-    /** Returns the salt of the advertisement. */
-    public byte[] getSalt() {
-        return mSalt.clone();
-    }
-
-    /** Returns the actions in the advertisement. */
-    public List<Integer> getActions() {
-        return new ArrayList<>(mActions);
-    }
-
     /** Returns the adjusted TX Power in the advertisement. Null if not available. */
     @Nullable
     public Byte getTxPower() {
         return mTxPower;
     }
 
-    /** Returns the length of the advertisement. */
-    public int getLength() {
-        return mLength;
-    }
-
     /** Returns the count of LTV fields in the advertisement. */
     public int getLtvFieldCount() {
         return mLtvFieldCount;
diff --git a/nearby/service/java/com/android/server/nearby/presence/PresenceDiscoveryResult.java b/nearby/service/java/com/android/server/nearby/presence/PresenceDiscoveryResult.java
index d1c72ae..5a76d96 100644
--- a/nearby/service/java/com/android/server/nearby/presence/PresenceDiscoveryResult.java
+++ b/nearby/service/java/com/android/server/nearby/presence/PresenceDiscoveryResult.java
@@ -16,31 +16,55 @@
 
 package com.android.server.nearby.presence;
 
-import android.nearby.NearbyDevice;
+import static com.android.server.nearby.NearbyService.TAG;
+
+import android.annotation.NonNull;
+import android.nearby.DataElement;
 import android.nearby.NearbyDeviceParcelable;
 import android.nearby.PresenceDevice;
 import android.nearby.PresenceScanFilter;
 import android.nearby.PublicCredential;
+import android.util.ArraySet;
+import android.util.Log;
+
+import com.android.internal.annotations.VisibleForTesting;
 
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.List;
+import java.util.Set;
 
 /** Represents a Presence discovery result. */
 public class PresenceDiscoveryResult {
 
     /** Creates a {@link PresenceDiscoveryResult} from the scan data. */
     public static PresenceDiscoveryResult fromDevice(NearbyDeviceParcelable device) {
+        PresenceDevice presenceDevice = device.getPresenceDevice();
+        if (presenceDevice != null) {
+            return new PresenceDiscoveryResult.Builder()
+                    .setTxPower(device.getTxPower())
+                    .setRssi(device.getRssi())
+                    .setSalt(presenceDevice.getSalt())
+                    .setPublicCredential(device.getPublicCredential())
+                    .addExtendedProperties(presenceDevice.getExtendedProperties())
+                    .setEncryptedIdentityTag(device.getEncryptionKeyTag())
+                    .build();
+        }
         byte[] salt = device.getSalt();
         if (salt == null) {
             salt = new byte[0];
         }
-        return new PresenceDiscoveryResult.Builder()
-                .setTxPower(device.getTxPower())
+
+        PresenceDiscoveryResult.Builder builder = new PresenceDiscoveryResult.Builder();
+        builder.setTxPower(device.getTxPower())
                 .setRssi(device.getRssi())
                 .setSalt(salt)
                 .addPresenceAction(device.getAction())
-                .setPublicCredential(device.getPublicCredential())
-                .build();
+                .setPublicCredential(device.getPublicCredential());
+        if (device.getPresenceDevice() != null) {
+            builder.addExtendedProperties(device.getPresenceDevice().getExtendedProperties());
+        }
+        return builder.build();
     }
 
     private final int mTxPower;
@@ -48,25 +72,35 @@
     private final byte[] mSalt;
     private final List<Integer> mPresenceActions;
     private final PublicCredential mPublicCredential;
+    private final List<DataElement> mExtendedProperties;
+    private final byte[] mEncryptedIdentityTag;
 
     private PresenceDiscoveryResult(
             int txPower,
             int rssi,
             byte[] salt,
             List<Integer> presenceActions,
-            PublicCredential publicCredential) {
+            PublicCredential publicCredential,
+            List<DataElement> extendedProperties,
+            byte[] encryptedIdentityTag) {
         mTxPower = txPower;
         mRssi = rssi;
         mSalt = salt;
         mPresenceActions = presenceActions;
         mPublicCredential = publicCredential;
+        mExtendedProperties = extendedProperties;
+        mEncryptedIdentityTag = encryptedIdentityTag;
     }
 
     /** Returns whether the discovery result matches the scan filter. */
     public boolean matches(PresenceScanFilter scanFilter) {
+        if (accountKeyMatches(scanFilter.getExtendedProperties())) {
+            return true;
+        }
+
         return pathLossMatches(scanFilter.getMaxPathLoss())
                 && actionMatches(scanFilter.getPresenceActions())
-                && credentialMatches(scanFilter.getCredentials());
+                && identityMatches(scanFilter.getCredentials());
     }
 
     private boolean pathLossMatches(int maxPathLoss) {
@@ -80,21 +114,47 @@
         return filterActions.stream().anyMatch(mPresenceActions::contains);
     }
 
-    private boolean credentialMatches(List<PublicCredential> credentials) {
-        return credentials.contains(mPublicCredential);
+    @VisibleForTesting
+    boolean accountKeyMatches(List<DataElement> extendedProperties) {
+        Set<byte[]> accountKeys = new ArraySet<>();
+        for (DataElement requestedDe : mExtendedProperties) {
+            if (requestedDe.getKey() != DataElement.DataType.ACCOUNT_KEY_DATA) {
+                continue;
+            }
+            accountKeys.add(requestedDe.getValue());
+        }
+        for (DataElement scannedDe : extendedProperties) {
+            if (scannedDe.getKey() != DataElement.DataType.ACCOUNT_KEY_DATA) {
+                continue;
+            }
+            // If one account key matches, then returns true.
+            for (byte[] key : accountKeys) {
+                if (Arrays.equals(key, scannedDe.getValue())) {
+                    return true;
+                }
+            }
+        }
+
+        return false;
     }
 
-    /** Converts a presence device from the discovery result. */
-    public PresenceDevice toPresenceDevice() {
-        return new PresenceDevice.Builder(
-                // Use the public credential hash as the device Id.
-                String.valueOf(mPublicCredential.hashCode()),
-                mSalt,
-                mPublicCredential.getSecretId(),
-                mPublicCredential.getEncryptedMetadata())
-                .setRssi(mRssi)
-                .addMedium(NearbyDevice.Medium.BLE)
-                .build();
+    @VisibleForTesting
+    /** Gets presence {@link DataElement}s of the discovery result. */
+    public List<DataElement> getExtendedProperties() {
+        return mExtendedProperties;
+    }
+
+    private boolean identityMatches(List<PublicCredential> publicCredentials) {
+        if (mEncryptedIdentityTag.length == 0) {
+            return true;
+        }
+        for (PublicCredential publicCredential : publicCredentials) {
+            if (Arrays.equals(
+                    mEncryptedIdentityTag, publicCredential.getEncryptedMetadataKeyTag())) {
+                return true;
+            }
+        }
+        return false;
     }
 
     /** Builder for {@link PresenceDiscoveryResult}. */
@@ -105,9 +165,12 @@
 
         private PublicCredential mPublicCredential;
         private final List<Integer> mPresenceActions;
+        private final List<DataElement> mExtendedProperties;
+        private byte[] mEncryptedIdentityTag = new byte[0];
 
         public Builder() {
             mPresenceActions = new ArrayList<>();
+            mExtendedProperties = new ArrayList<>();
         }
 
         /** Sets the calibrated tx power for the discovery result. */
@@ -130,7 +193,18 @@
 
         /** Sets the public credential for the discovery result. */
         public Builder setPublicCredential(PublicCredential publicCredential) {
-            mPublicCredential = publicCredential;
+            if (publicCredential != null) {
+                mPublicCredential = publicCredential;
+            }
+            return this;
+        }
+
+        /** Sets the encrypted identity tag for the discovery result. Usually it is passed from
+         * {@link NearbyDeviceParcelable} and the tag is calculated with authenticity key when
+         * receiving an advertisement.
+         */
+        public Builder setEncryptedIdentityTag(byte[] encryptedIdentityTag) {
+            mEncryptedIdentityTag = encryptedIdentityTag;
             return this;
         }
 
@@ -140,10 +214,34 @@
             return this;
         }
 
+        /** Adds presence {@link DataElement}s of the discovery result. */
+        public Builder addExtendedProperties(DataElement dataElement) {
+            if (dataElement.getKey() == DataElement.DataType.ACTION) {
+                byte[] value = dataElement.getValue();
+                if (value.length == 1) {
+                    addPresenceAction(Byte.toUnsignedInt(value[0]));
+                } else {
+                    Log.e(TAG, "invalid action data element");
+                }
+            } else {
+                mExtendedProperties.add(dataElement);
+            }
+            return this;
+        }
+
+        /** Adds presence {@link DataElement}s of the discovery result. */
+        public Builder addExtendedProperties(@NonNull List<DataElement> dataElements) {
+            for (DataElement dataElement : dataElements) {
+                addExtendedProperties(dataElement);
+            }
+            return this;
+        }
+
         /** Builds a {@link PresenceDiscoveryResult}. */
         public PresenceDiscoveryResult build() {
             return new PresenceDiscoveryResult(
-                    mTxPower, mRssi, mSalt, mPresenceActions, mPublicCredential);
+                    mTxPower, mRssi, mSalt, mPresenceActions,
+                    mPublicCredential, mExtendedProperties, mEncryptedIdentityTag);
         }
     }
 }
diff --git a/nearby/service/java/com/android/server/nearby/presence/PresenceManager.java b/nearby/service/java/com/android/server/nearby/presence/PresenceManager.java
new file mode 100644
index 0000000..8b2db50
--- /dev/null
+++ b/nearby/service/java/com/android/server/nearby/presence/PresenceManager.java
@@ -0,0 +1,143 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.nearby.presence;
+
+import static com.android.server.nearby.NearbyService.TAG;
+
+import android.annotation.Nullable;
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.nearby.DataElement;
+import android.nearby.NearbyDevice;
+import android.nearby.NearbyManager;
+import android.nearby.PresenceDevice;
+import android.nearby.PresenceScanFilter;
+import android.nearby.PublicCredential;
+import android.nearby.ScanCallback;
+import android.nearby.ScanRequest;
+import android.util.Log;
+
+import androidx.annotation.NonNull;
+
+import com.android.internal.annotations.VisibleForTesting;
+import com.android.server.nearby.common.locator.Locator;
+import com.android.server.nearby.common.locator.LocatorContextWrapper;
+
+import java.util.Arrays;
+import java.util.List;
+import java.util.Locale;
+import java.util.concurrent.Executors;
+
+/** PresenceManager is the class initiated in nearby service to handle presence related work. */
+public class PresenceManager {
+
+    final LocatorContextWrapper mLocatorContextWrapper;
+    final Locator mLocator;
+    private final IntentFilter mIntentFilter;
+
+    @VisibleForTesting
+    final ScanCallback mScanCallback =
+            new ScanCallback() {
+                @Override
+                public void onDiscovered(@NonNull NearbyDevice device) {
+                    Log.i(TAG, "[PresenceManager] discovered Device.");
+                    PresenceDevice presenceDevice = (PresenceDevice) device;
+                    List<DataElement> dataElements = presenceDevice.getExtendedProperties();
+                    for (DataElement dataElement : dataElements) {
+                        Log.i(TAG, "[PresenceManager] Data Element key "
+                                + dataElement.getKey());
+                        Log.i(TAG, "[PresenceManager] Data Element value "
+                                + Arrays.toString(dataElement.getValue()));
+                    }
+                }
+
+                @Override
+                public void onUpdated(@NonNull NearbyDevice device) {}
+
+                @Override
+                public void onLost(@NonNull NearbyDevice device) {}
+            };
+
+    private final BroadcastReceiver mScreenBroadcastReceiver =
+            new BroadcastReceiver() {
+                @Override
+                public void onReceive(Context context, Intent intent) {
+                    NearbyManager manager = getNearbyManager();
+                    if (manager == null) {
+                        Log.e(TAG, "Nearby Manager is null");
+                        return;
+                    }
+                    if (intent.getAction().equals(Intent.ACTION_SCREEN_ON)) {
+                        Log.d(TAG, "PresenceManager Start scan.");
+                        PublicCredential publicCredential =
+                                new PublicCredential.Builder(new byte[]{1}, new byte[]{1},
+                                        new byte[]{1}, new byte[]{1}, new byte[]{1}).build();
+                        PresenceScanFilter presenceScanFilter =
+                                new PresenceScanFilter.Builder()
+                                        .setMaxPathLoss(3)
+                                        .addCredential(publicCredential)
+                                        .addPresenceAction(1)
+                                        .addExtendedProperty(new DataElement(
+                                                DataElement.DataType.ACCOUNT_KEY_DATA,
+                                                new byte[16]))
+                                        .build();
+                        ScanRequest scanRequest =
+                                new ScanRequest.Builder()
+                                        .setScanType(ScanRequest.SCAN_TYPE_NEARBY_PRESENCE)
+                                        .addScanFilter(presenceScanFilter)
+                                        .build();
+                        Log.d(
+                                TAG,
+                                String.format(
+                                        Locale.getDefault(),
+                                        "[PresenceManager] Start Presence scan with request: %s",
+                                        scanRequest.toString()));
+                        manager.startScan(
+                                scanRequest, Executors.newSingleThreadExecutor(), mScanCallback);
+                    } else if (intent.getAction().equals(Intent.ACTION_SCREEN_OFF)) {
+                        Log.d(TAG, "PresenceManager Stop scan.");
+                        manager.stopScan(mScanCallback);
+                    }
+                }
+            };
+
+    public PresenceManager(LocatorContextWrapper contextWrapper) {
+        mLocatorContextWrapper = contextWrapper;
+        mLocator = mLocatorContextWrapper.getLocator();
+        mIntentFilter = new IntentFilter();
+    }
+
+    /** Null when the Nearby Service is not available. */
+    @Nullable
+    private NearbyManager getNearbyManager() {
+        return (NearbyManager)
+                mLocatorContextWrapper
+                        .getApplicationContext()
+                        .getSystemService(Context.NEARBY_SERVICE);
+    }
+
+    /** Function called when nearby service start. */
+    public void initiate() {
+        mIntentFilter.addAction(Intent.ACTION_SCREEN_ON);
+        mIntentFilter.addAction(Intent.ACTION_SCREEN_OFF);
+        mLocatorContextWrapper
+                .getContext()
+                .registerReceiver(mScreenBroadcastReceiver, mIntentFilter);
+    }
+}
diff --git a/nearby/service/java/com/android/server/nearby/provider/AbstractDiscoveryProvider.java b/nearby/service/java/com/android/server/nearby/provider/AbstractDiscoveryProvider.java
index f136695..21b4d7c 100644
--- a/nearby/service/java/com/android/server/nearby/provider/AbstractDiscoveryProvider.java
+++ b/nearby/service/java/com/android/server/nearby/provider/AbstractDiscoveryProvider.java
@@ -40,7 +40,6 @@
     protected final DiscoveryProviderController mController;
     protected final Executor mExecutor;
     protected Listener mListener;
-    protected List<ScanFilter> mScanFilters;
 
     /** Interface for listening to discovery providers. */
     public interface Listener {
@@ -77,6 +76,12 @@
     protected void invalidateScanMode() {}
 
     /**
+     * Callback invoked to inform the provider of new provider scan filters which replaces any prior
+     * provider filters. Always invoked on the provider executor.
+     */
+    protected void onSetScanFilters(List<ScanFilter> filters) {}
+
+    /**
      * Retrieves the controller for this discovery provider. Should never be invoked by subclasses,
      * as a discovery provider should not be controlling itself. Using this method from subclasses
      * could also result in deadlock.
@@ -138,7 +143,7 @@
 
         @Override
         public void setProviderScanFilters(List<ScanFilter> filters) {
-            mScanFilters = filters;
+            mExecutor.execute(() -> onSetScanFilters(filters));
         }
     }
 }
diff --git a/nearby/service/java/com/android/server/nearby/provider/BleBroadcastProvider.java b/nearby/service/java/com/android/server/nearby/provider/BleBroadcastProvider.java
index 67392ad..2b9fdb9 100644
--- a/nearby/service/java/com/android/server/nearby/provider/BleBroadcastProvider.java
+++ b/nearby/service/java/com/android/server/nearby/provider/BleBroadcastProvider.java
@@ -16,17 +16,25 @@
 
 package com.android.server.nearby.provider;
 
+import static com.android.server.nearby.NearbyService.TAG;
+import static com.android.server.nearby.presence.PresenceConstants.PRESENCE_UUID;
+
 import android.bluetooth.BluetoothAdapter;
 import android.bluetooth.le.AdvertiseCallback;
 import android.bluetooth.le.AdvertiseData;
 import android.bluetooth.le.AdvertiseSettings;
+import android.bluetooth.le.AdvertisingSet;
+import android.bluetooth.le.AdvertisingSetCallback;
+import android.bluetooth.le.AdvertisingSetParameters;
 import android.bluetooth.le.BluetoothLeAdvertiser;
 import android.nearby.BroadcastCallback;
+import android.nearby.BroadcastRequest;
 import android.os.ParcelUuid;
+import android.util.Log;
 
+import com.android.internal.annotations.VisibleForTesting;
 import com.android.server.nearby.injector.Injector;
 
-import java.util.UUID;
 import java.util.concurrent.Executor;
 
 /**
@@ -46,13 +54,16 @@
 
     private BroadcastListener mBroadcastListener;
     private boolean mIsAdvertising;
-
+    @VisibleForTesting
+    AdvertisingSetCallback mAdvertisingSetCallback;
     BleBroadcastProvider(Injector injector, Executor executor) {
         mInjector = injector;
         mExecutor = executor;
+        mAdvertisingSetCallback = getAdvertisingSetCallback();
     }
 
-    void start(byte[] advertisementPackets, BroadcastListener listener) {
+    void start(@BroadcastRequest.BroadcastVersion int version, byte[] advertisementPackets,
+            BroadcastListener listener) {
         if (mIsAdvertising) {
             stop();
         }
@@ -63,23 +74,36 @@
                     mInjector.getBluetoothAdapter().getBluetoothLeAdvertiser();
             if (bluetoothLeAdvertiser != null) {
                 advertiseStarted = true;
-                AdvertiseSettings settings =
-                        new AdvertiseSettings.Builder()
-                                .setAdvertiseMode(AdvertiseSettings.ADVERTISE_MODE_BALANCED)
-                                .setTxPowerLevel(AdvertiseSettings.ADVERTISE_TX_POWER_MEDIUM)
-                                .setConnectable(true)
-                                .build();
-
-                // TODO(b/230538655) Use empty data until Presence V1 protocol is implemented.
-                ParcelUuid emptyParcelUuid = new ParcelUuid(new UUID(0L, 0L));
-                byte[] emptyAdvertisementPackets = new byte[0];
                 AdvertiseData advertiseData =
                         new AdvertiseData.Builder()
-                                .addServiceData(emptyParcelUuid, emptyAdvertisementPackets).build();
+                                .addServiceData(new ParcelUuid(PRESENCE_UUID),
+                                        advertisementPackets).build();
                 try {
                     mBroadcastListener = listener;
-                    bluetoothLeAdvertiser.startAdvertising(settings, advertiseData, this);
+                    switch (version) {
+                        case BroadcastRequest.PRESENCE_VERSION_V0:
+                            bluetoothLeAdvertiser.startAdvertising(getAdvertiseSettings(),
+                                    advertiseData, this);
+                            break;
+                        case BroadcastRequest.PRESENCE_VERSION_V1:
+                            if (adapter.isLeExtendedAdvertisingSupported()) {
+                                bluetoothLeAdvertiser.startAdvertisingSet(
+                                        getAdvertisingSetParameters(),
+                                        advertiseData,
+                                        null, null, null, mAdvertisingSetCallback);
+                            } else {
+                                Log.w(TAG, "Failed to start advertising set because the chipset"
+                                        + " does not supports LE Extended Advertising feature.");
+                                advertiseStarted = false;
+                            }
+                            break;
+                        default:
+                            Log.w(TAG, "Failed to start advertising set because the advertisement"
+                                    + " is wrong.");
+                            advertiseStarted = false;
+                    }
                 } catch (NullPointerException | IllegalStateException | SecurityException e) {
+                    Log.w(TAG, "Failed to start advertising.", e);
                     advertiseStarted = false;
                 }
             }
@@ -97,6 +121,7 @@
                         mInjector.getBluetoothAdapter().getBluetoothLeAdvertiser();
                 if (bluetoothLeAdvertiser != null) {
                     bluetoothLeAdvertiser.stopAdvertising(this);
+                    bluetoothLeAdvertiser.stopAdvertisingSet(mAdvertisingSetCallback);
                 }
             }
             mBroadcastListener = null;
@@ -120,4 +145,41 @@
             mBroadcastListener.onStatusChanged(BroadcastCallback.STATUS_FAILURE);
         }
     }
+
+    private static AdvertiseSettings getAdvertiseSettings() {
+        return new AdvertiseSettings.Builder()
+                .setAdvertiseMode(AdvertiseSettings.ADVERTISE_MODE_BALANCED)
+                .setTxPowerLevel(AdvertiseSettings.ADVERTISE_TX_POWER_MEDIUM)
+                .setConnectable(true)
+                .build();
+    }
+
+    private static AdvertisingSetParameters getAdvertisingSetParameters() {
+        return new AdvertisingSetParameters.Builder()
+                .setInterval(AdvertisingSetParameters.INTERVAL_MEDIUM)
+                .setTxPowerLevel(AdvertisingSetParameters.TX_POWER_MEDIUM)
+                .setIncludeTxPower(true)
+                .setConnectable(true)
+                .build();
+    }
+
+    private AdvertisingSetCallback getAdvertisingSetCallback() {
+        return new AdvertisingSetCallback() {
+            @Override
+            public void onAdvertisingSetStarted(AdvertisingSet advertisingSet,
+                    int txPower, int status) {
+                if (status == AdvertisingSetCallback.ADVERTISE_SUCCESS) {
+                    if (mBroadcastListener != null) {
+                        mBroadcastListener.onStatusChanged(BroadcastCallback.STATUS_OK);
+                    }
+                    mIsAdvertising = true;
+                } else {
+                    Log.e(TAG, "Starts advertising failed in status " + status);
+                    if (mBroadcastListener != null) {
+                        mBroadcastListener.onStatusChanged(BroadcastCallback.STATUS_FAILURE);
+                    }
+                }
+            }
+        };
+    }
 }
diff --git a/nearby/service/java/com/android/server/nearby/provider/BleDiscoveryProvider.java b/nearby/service/java/com/android/server/nearby/provider/BleDiscoveryProvider.java
index e8aea79..55176ba 100644
--- a/nearby/service/java/com/android/server/nearby/provider/BleDiscoveryProvider.java
+++ b/nearby/service/java/com/android/server/nearby/provider/BleDiscoveryProvider.java
@@ -27,16 +27,23 @@
 import android.bluetooth.le.ScanResult;
 import android.bluetooth.le.ScanSettings;
 import android.content.Context;
+import android.nearby.DataElement;
 import android.nearby.NearbyDevice;
 import android.nearby.NearbyDeviceParcelable;
+import android.nearby.PresenceDevice;
+import android.nearby.PresenceScanFilter;
+import android.nearby.PublicCredential;
 import android.nearby.ScanRequest;
 import android.os.ParcelUuid;
 import android.util.Log;
 
+import com.android.internal.annotations.GuardedBy;
 import com.android.server.nearby.common.bluetooth.fastpair.Constants;
 import com.android.server.nearby.injector.Injector;
+import com.android.server.nearby.presence.ExtendedAdvertisement;
 import com.android.server.nearby.presence.PresenceConstants;
 import com.android.server.nearby.util.ForegroundThread;
+import com.android.server.nearby.util.encryption.CryptorImpIdentityV1;
 
 import com.google.common.annotations.VisibleForTesting;
 
@@ -57,6 +64,21 @@
     // Don't block the thread as it may be used by other services.
     private static final Executor NEARBY_EXECUTOR = ForegroundThread.getExecutor();
     private final Injector mInjector;
+    private final Object mLock = new Object();
+    // Null when the filters are never set
+    @VisibleForTesting
+    @GuardedBy("mLock")
+    @Nullable
+    private List<android.nearby.ScanFilter> mScanFilters;
+    private android.bluetooth.le.ScanCallback mScanCallbackLegacy =
+            new android.bluetooth.le.ScanCallback() {
+                @Override
+                public void onScanResult(int callbackType, ScanResult scanResult) {
+                }
+                @Override
+                public void onScanFailed(int errorCode) {
+                }
+            };
     private android.bluetooth.le.ScanCallback mScanCallback =
             new android.bluetooth.le.ScanCallback() {
                 @Override
@@ -81,7 +103,8 @@
                             } else {
                                 byte[] presenceData = serviceDataMap.get(PRESENCE_UUID);
                                 if (presenceData != null) {
-                                    builder.setData(serviceDataMap.get(PRESENCE_UUID));
+                                    setPresenceDevice(presenceData, builder, deviceName,
+                                            scanResult.getRssi());
                                 }
                             }
                         }
@@ -91,7 +114,7 @@
 
                 @Override
                 public void onScanFailed(int errorCode) {
-                    Log.w(TAG, "BLE Scan failed with error code " + errorCode);
+                    Log.w(TAG, "BLE 5.0 Scan failed with error code " + errorCode);
                 }
             };
 
@@ -100,12 +123,39 @@
         mInjector = injector;
     }
 
+    private static PresenceDevice getPresenceDevice(ExtendedAdvertisement advertisement,
+            String deviceName, int rssi) {
+        // TODO(238458326): After implementing encryption, use real data.
+        byte[] secretIdBytes = new byte[0];
+        PresenceDevice.Builder builder =
+                new PresenceDevice.Builder(
+                        String.valueOf(advertisement.hashCode()),
+                        advertisement.getSalt(),
+                        secretIdBytes,
+                        advertisement.getIdentity())
+                        .addMedium(NearbyDevice.Medium.BLE)
+                        .setName(deviceName)
+                        .setRssi(rssi);
+        for (int i : advertisement.getActions()) {
+            builder.addExtendedProperty(new DataElement(DataElement.DataType.ACTION,
+                    new byte[]{(byte) i}));
+        }
+        for (DataElement dataElement : advertisement.getDataElements()) {
+            builder.addExtendedProperty(dataElement);
+        }
+        return builder.build();
+    }
+
     private static List<ScanFilter> getScanFilters() {
         List<ScanFilter> scanFilterList = new ArrayList<>();
         scanFilterList.add(
                 new ScanFilter.Builder()
                         .setServiceData(FAST_PAIR_UUID, new byte[]{0}, new byte[]{0})
                         .build());
+        scanFilterList.add(
+                new ScanFilter.Builder()
+                        .setServiceData(PRESENCE_UUID, new byte[]{0}, new byte[]{0})
+                        .build());
         return scanFilterList;
     }
 
@@ -130,8 +180,9 @@
     @Override
     protected void onStart() {
         if (isBleAvailable()) {
-            Log.d(TAG, "BleDiscoveryProvider started.");
-            startScan(getScanFilters(), getScanSettings(), mScanCallback);
+            Log.d(TAG, "BleDiscoveryProvider started");
+            startScan(getScanFilters(), getScanSettings(/* legacy= */ false), mScanCallback);
+            startScan(getScanFilters(), getScanSettings(/* legacy= */ true), mScanCallbackLegacy);
             return;
         }
         Log.w(TAG, "Cannot start BleDiscoveryProvider because Ble is not available.");
@@ -148,6 +199,12 @@
         }
         Log.v(TAG, "Ble scan stopped.");
         bluetoothLeScanner.stopScan(mScanCallback);
+        bluetoothLeScanner.stopScan(mScanCallbackLegacy);
+        synchronized (mLock) {
+            if (mScanFilters != null) {
+                mScanFilters = null;
+            }
+        }
     }
 
     @Override
@@ -156,6 +213,20 @@
         onStart();
     }
 
+    @Override
+    protected void onSetScanFilters(List<android.nearby.ScanFilter> filters) {
+        synchronized (mLock) {
+            mScanFilters = filters == null ? null : List.copyOf(filters);
+        }
+    }
+
+    @VisibleForTesting
+    protected List<android.nearby.ScanFilter> getFiltersLocked() {
+        synchronized (mLock) {
+            return mScanFilters == null ? null : List.copyOf(mScanFilters);
+        }
+    }
+
     private void startScan(
             List<ScanFilter> scanFilters, ScanSettings scanSettings,
             android.bluetooth.le.ScanCallback scanCallback) {
@@ -179,7 +250,7 @@
         }
     }
 
-    private ScanSettings getScanSettings() {
+    private ScanSettings getScanSettings(boolean legacy) {
         int bleScanMode = ScanSettings.SCAN_MODE_LOW_POWER;
         switch (mController.getProviderScanMode()) {
             case ScanRequest.SCAN_MODE_LOW_LATENCY:
@@ -195,11 +266,42 @@
                 bleScanMode = ScanSettings.SCAN_MODE_OPPORTUNISTIC;
                 break;
         }
-        return new ScanSettings.Builder().setScanMode(bleScanMode).build();
+        return new ScanSettings.Builder().setScanMode(bleScanMode).setLegacy(legacy).build();
     }
 
     @VisibleForTesting
     ScanCallback getScanCallback() {
         return mScanCallback;
     }
+
+    private void setPresenceDevice(byte[] data, NearbyDeviceParcelable.Builder builder,
+            String deviceName, int rssi) {
+        synchronized (mLock) {
+            if (mScanFilters == null) {
+                return;
+            }
+            for (android.nearby.ScanFilter scanFilter : mScanFilters) {
+                if (scanFilter instanceof PresenceScanFilter) {
+                    // Iterate all possible authenticity key and identity combinations to decrypt
+                    // advertisement
+                    PresenceScanFilter presenceFilter = (PresenceScanFilter) scanFilter;
+                    for (PublicCredential credential : presenceFilter.getCredentials()) {
+                        ExtendedAdvertisement advertisement =
+                                ExtendedAdvertisement.fromBytes(data, credential);
+                        if (advertisement == null) {
+                            continue;
+                        }
+                        if (CryptorImpIdentityV1.getInstance().verify(
+                                advertisement.getIdentity(),
+                                credential.getEncryptedMetadataKeyTag())) {
+                            builder.setPresenceDevice(getPresenceDevice(advertisement, deviceName,
+                                    rssi));
+                            builder.setEncryptionKeyTag(credential.getEncryptedMetadataKeyTag());
+                            return;
+                        }
+                    }
+                }
+            }
+        }
+    }
 }
diff --git a/nearby/service/java/com/android/server/nearby/provider/BroadcastProviderManager.java b/nearby/service/java/com/android/server/nearby/provider/BroadcastProviderManager.java
index 3fffda5..400f936 100644
--- a/nearby/service/java/com/android/server/nearby/provider/BroadcastProviderManager.java
+++ b/nearby/service/java/com/android/server/nearby/provider/BroadcastProviderManager.java
@@ -16,6 +16,9 @@
 
 package com.android.server.nearby.provider;
 
+import static com.android.server.nearby.NearbyService.SUPPORT_TEST_APP;
+
+import android.annotation.Nullable;
 import android.content.Context;
 import android.nearby.BroadcastCallback;
 import android.nearby.BroadcastRequest;
@@ -27,6 +30,8 @@
 import com.android.internal.annotations.VisibleForTesting;
 import com.android.server.nearby.NearbyConfiguration;
 import com.android.server.nearby.injector.Injector;
+import com.android.server.nearby.presence.Advertisement;
+import com.android.server.nearby.presence.ExtendedAdvertisement;
 import com.android.server.nearby.presence.FastAdvertisement;
 import com.android.server.nearby.util.ForegroundThread;
 
@@ -66,10 +71,12 @@
     public void startBroadcast(BroadcastRequest broadcastRequest, IBroadcastListener listener) {
         synchronized (mLock) {
             mExecutor.execute(() -> {
-                NearbyConfiguration configuration = new NearbyConfiguration();
-                if (!configuration.isPresenceBroadcastLegacyEnabled()) {
-                    reportBroadcastStatus(listener, BroadcastCallback.STATUS_FAILURE);
-                    return;
+                if (!SUPPORT_TEST_APP) {
+                    NearbyConfiguration configuration = new NearbyConfiguration();
+                    if (!configuration.isPresenceBroadcastLegacyEnabled()) {
+                        reportBroadcastStatus(listener, BroadcastCallback.STATUS_FAILURE);
+                        return;
+                    }
                 }
                 if (broadcastRequest.getType() != BroadcastRequest.BROADCAST_TYPE_NEARBY_PRESENCE) {
                     reportBroadcastStatus(listener, BroadcastCallback.STATUS_FAILURE);
@@ -77,25 +84,37 @@
                 }
                 PresenceBroadcastRequest presenceBroadcastRequest =
                         (PresenceBroadcastRequest) broadcastRequest;
-                if (presenceBroadcastRequest.getVersion() != BroadcastRequest.PRESENCE_VERSION_V0) {
+                Advertisement advertisement = getAdvertisement(presenceBroadcastRequest);
+                if (advertisement == null) {
+                    Log.e(TAG, "Failed to start broadcast because broadcastRequest is illegal.");
                     reportBroadcastStatus(listener, BroadcastCallback.STATUS_FAILURE);
                     return;
                 }
-                FastAdvertisement fastAdvertisement = FastAdvertisement.createFromRequest(
-                        presenceBroadcastRequest);
-                byte[] advertisementPackets = fastAdvertisement.toBytes();
                 mBroadcastListener = listener;
-                mBleBroadcastProvider.start(advertisementPackets, this);
+                mBleBroadcastProvider.start(presenceBroadcastRequest.getVersion(),
+                        advertisement.toBytes(), this);
             });
         }
     }
 
+    @Nullable
+    private Advertisement getAdvertisement(PresenceBroadcastRequest request) {
+        switch (request.getVersion()) {
+            case BroadcastRequest.PRESENCE_VERSION_V0:
+                return FastAdvertisement.createFromRequest(request);
+            case BroadcastRequest.PRESENCE_VERSION_V1:
+                return ExtendedAdvertisement.createFromRequest(request);
+            default:
+                return null;
+        }
+    }
+
     /**
      * Stops the nearby broadcast.
      */
     public void stopBroadcast(IBroadcastListener listener) {
         synchronized (mLock) {
-            if (!mNearbyConfiguration.isPresenceBroadcastLegacyEnabled()) {
+            if (!SUPPORT_TEST_APP && !mNearbyConfiguration.isPresenceBroadcastLegacyEnabled()) {
                 reportBroadcastStatus(listener, BroadcastCallback.STATUS_FAILURE);
                 return;
             }
diff --git a/nearby/service/java/com/android/server/nearby/provider/ChreCommunication.java b/nearby/service/java/com/android/server/nearby/provider/ChreCommunication.java
index 5077ffe..b24e7d9 100644
--- a/nearby/service/java/com/android/server/nearby/provider/ChreCommunication.java
+++ b/nearby/service/java/com/android/server/nearby/provider/ChreCommunication.java
@@ -19,15 +19,18 @@
 import static com.android.server.nearby.NearbyService.TAG;
 
 import android.annotation.Nullable;
+import android.content.Context;
 import android.hardware.location.ContextHubClient;
 import android.hardware.location.ContextHubClientCallback;
 import android.hardware.location.ContextHubInfo;
+import android.hardware.location.ContextHubManager;
 import android.hardware.location.ContextHubTransaction;
 import android.hardware.location.NanoAppMessage;
 import android.hardware.location.NanoAppState;
 import android.util.Log;
 
-import com.android.server.nearby.injector.ContextHubManagerAdapter;
+import com.android.internal.annotations.VisibleForTesting;
+import com.android.server.nearby.NearbyConfiguration;
 import com.android.server.nearby.injector.Injector;
 
 import com.google.common.base.Preconditions;
@@ -63,19 +66,28 @@
     }
 
     private final Injector mInjector;
+    private final Context mContext;
     private final Executor mExecutor;
 
     private boolean mStarted = false;
+    // null when CHRE availability result has not been returned
+    @Nullable private Boolean mChreSupport = null;
     @Nullable private ContextHubCommsCallback mCallback;
     @Nullable private ContextHubClient mContextHubClient;
 
-    public ChreCommunication(Injector injector, Executor executor) {
+    public ChreCommunication(Injector injector, Context context, Executor executor) {
         mInjector = injector;
+        mContext = context;
         mExecutor = executor;
     }
 
-    public boolean available() {
-        return mContextHubClient != null;
+    /**
+     * @return {@code true} if NanoApp is available and {@code null} when CHRE availability result
+     * has not been returned
+     */
+    @Nullable
+    public Boolean available() {
+        return mChreSupport;
     }
 
     /**
@@ -86,12 +98,12 @@
      *     contexthub.
      */
     public synchronized void start(ContextHubCommsCallback callback, Set<Long> nanoAppIds) {
-        ContextHubManagerAdapter manager = mInjector.getContextHubManagerAdapter();
+        ContextHubManager manager = mInjector.getContextHubManager();
         if (manager == null) {
             Log.e(TAG, "ContexHub not available in this device");
             return;
         } else {
-            Log.i(TAG, "Start ChreCommunication");
+            Log.i(TAG, "[ChreCommunication] Start ChreCommunication");
         }
         Preconditions.checkNotNull(callback);
         Preconditions.checkArgument(!nanoAppIds.isEmpty());
@@ -134,6 +146,7 @@
         if (mContextHubClient != null) {
             mContextHubClient.close();
             mContextHubClient = null;
+            mChreSupport = null;
         }
     }
 
@@ -172,7 +185,8 @@
         mCallback.onNanoAppRestart(nanoAppId);
     }
 
-    private static String contextHubTransactionResultToString(int result) {
+    @VisibleForTesting
+    static String contextHubTransactionResultToString(int result) {
         switch (result) {
             case ContextHubTransaction.RESULT_SUCCESS:
                 return "RESULT_SUCCESS";
@@ -207,13 +221,13 @@
         private final ContextHubInfo mQueriedContextHub;
         private final List<ContextHubInfo> mContextHubs;
         private final Set<Long> mNanoAppIds;
-        private final ContextHubManagerAdapter mManager;
+        private final ContextHubManager mManager;
 
         OnQueryCompleteListener(
                 ContextHubInfo queriedContextHub,
                 List<ContextHubInfo> contextHubs,
                 Set<Long> nanoAppIds,
-                ContextHubManagerAdapter manager) {
+                ContextHubManager manager) {
             this.mQueriedContextHub = queriedContextHub;
             this.mContextHubs = contextHubs;
             this.mNanoAppIds = nanoAppIds;
@@ -233,19 +247,27 @@
 
             if (response.getResult() == ContextHubTransaction.RESULT_SUCCESS) {
                 for (NanoAppState state : response.getContents()) {
+                    long version = state.getNanoAppVersion();
+                    NearbyConfiguration configuration = new NearbyConfiguration();
+                    long minVersion = configuration.getNanoAppMinVersion();
+                    if (version < minVersion) {
+                        Log.w(TAG, String.format("Current nano app version is %s, which does not  "
+                                + "meet minimum version required %s", version, minVersion));
+                        continue;
+                    }
                     if (mNanoAppIds.contains(state.getNanoAppId())) {
                         Log.i(
                                 TAG,
                                 String.format(
                                         "Found valid contexthub: %s", mQueriedContextHub.getId()));
-                        mContextHubClient =
-                                mManager.createClient(
-                                        mQueriedContextHub, ChreCommunication.this, mExecutor);
+                        mContextHubClient = mManager.createClient(mContext, mQueriedContextHub,
+                                mExecutor, ChreCommunication.this);
+                        mChreSupport = true;
                         mCallback.started(true);
                         return;
                     }
                 }
-                Log.e(
+                Log.i(
                         TAG,
                         String.format(
                                 "Didn't find the nanoapp on contexthub: %s",
@@ -263,6 +285,7 @@
             // there isn't a valid context available on this device.
             if (mContextHubs.isEmpty()) {
                 mCallback.started(false);
+                mChreSupport = false;
             }
         }
     }
diff --git a/nearby/service/java/com/android/server/nearby/provider/ChreDiscoveryProvider.java b/nearby/service/java/com/android/server/nearby/provider/ChreDiscoveryProvider.java
index f20c6d8..6aefae9 100644
--- a/nearby/service/java/com/android/server/nearby/provider/ChreDiscoveryProvider.java
+++ b/nearby/service/java/com/android/server/nearby/provider/ChreDiscoveryProvider.java
@@ -20,20 +20,32 @@
 
 import static com.android.server.nearby.NearbyService.TAG;
 
+import static service.proto.Blefilter.DataElement.ElementType.DE_BATTERY_STATUS;
+import static service.proto.Blefilter.DataElement.ElementType.DE_CONNECTION_STATUS;
+import static service.proto.Blefilter.DataElement.ElementType.DE_FAST_PAIR_ACCOUNT_KEY;
+
+import android.annotation.Nullable;
+import android.content.BroadcastReceiver;
 import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
 import android.hardware.location.NanoAppMessage;
+import android.nearby.DataElement;
 import android.nearby.NearbyDevice;
 import android.nearby.NearbyDeviceParcelable;
+import android.nearby.PresenceDevice;
 import android.nearby.PresenceScanFilter;
 import android.nearby.PublicCredential;
 import android.nearby.ScanFilter;
 import android.util.Log;
 
+import com.android.internal.annotations.GuardedBy;
 import com.android.internal.annotations.VisibleForTesting;
 
-import com.google.protobuf.InvalidProtocolBufferException;
+import com.google.protobuf.ByteString;
 
 import java.util.Collections;
+import java.util.List;
 import java.util.concurrent.Executor;
 
 import service.proto.Blefilter;
@@ -47,47 +59,95 @@
     @VisibleForTesting public static final int NANOAPP_MESSAGE_TYPE_FILTER = 3;
     /** @hide */
     @VisibleForTesting public static final int NANOAPP_MESSAGE_TYPE_FILTER_RESULT = 4;
+    /** @hide */
+    @VisibleForTesting public static final int NANOAPP_MESSAGE_TYPE_CONFIG = 5;
 
-    private static final int PRESENCE_UUID = 0xFCF1;
+    private static final int FP_ACCOUNT_KEY_LENGTH = 16;
 
-    private ChreCommunication mChreCommunication;
-    private ChreCallback mChreCallback;
+    private final ChreCommunication mChreCommunication;
+    private final ChreCallback mChreCallback;
+    private final Object mLock = new Object();
+
     private boolean mChreStarted = false;
     private Blefilter.BleFilters mFilters = null;
-    private int mFilterId;
+    private Context mContext;
+    private final IntentFilter mIntentFilter;
+    // Null when the filters are never set
+    @GuardedBy("mLock")
+    @Nullable
+    private List<ScanFilter> mScanFilters;
+
+    private final BroadcastReceiver mScreenBroadcastReceiver =
+            new BroadcastReceiver() {
+                @Override
+                public void onReceive(Context context, Intent intent) {
+                    Boolean screenOn = intent.getAction().equals(Intent.ACTION_SCREEN_ON)
+                            || intent.getAction().equals(Intent.ACTION_USER_PRESENT);
+                    Log.d(TAG, String.format(
+                            "[ChreDiscoveryProvider] update nanoapp screen status: %B", screenOn));
+                    sendScreenUpdate(screenOn);
+                }
+            };
 
     public ChreDiscoveryProvider(
             Context context, ChreCommunication chreCommunication, Executor executor) {
         super(context, executor);
+        mContext = context;
         mChreCommunication = chreCommunication;
         mChreCallback = new ChreCallback();
-        mFilterId = 0;
+        mIntentFilter = new IntentFilter();
+    }
+
+    /** Initialize the CHRE discovery provider. */
+    public void init() {
+        mChreCommunication.start(mChreCallback, Collections.singleton(NANOAPP_ID));
     }
 
     @Override
     protected void onStart() {
         Log.d(TAG, "Start CHRE scan");
-        mChreCommunication.start(mChreCallback, Collections.singleton(NANOAPP_ID));
-        updateFilters();
+        synchronized (mLock) {
+            updateFiltersLocked();
+        }
     }
 
     @Override
     protected void onStop() {
-        mChreStarted = false;
-        mChreCommunication.stop();
+        Log.d(TAG, "Stop CHRE scan");
+        synchronized (mLock) {
+            if (mScanFilters != null) {
+                mScanFilters = null;
+            }
+            updateFiltersLocked();
+        }
     }
 
     @Override
-    protected void invalidateScanMode() {
-        onStop();
-        onStart();
+    protected void onSetScanFilters(List<ScanFilter> filters) {
+        synchronized (mLock) {
+            mScanFilters = filters == null ? null : List.copyOf(filters);
+            updateFiltersLocked();
+        }
     }
 
-    public boolean available() {
+    /**
+     * @return {@code true} if CHRE is available and {@code null} when CHRE availability result
+     * has not been returned
+     */
+    @Nullable
+    public Boolean available() {
         return mChreCommunication.available();
     }
 
-    private synchronized void updateFilters() {
+    @VisibleForTesting
+    List<ScanFilter> getFiltersLocked() {
+        synchronized (mLock) {
+            return mScanFilters == null ? null : List.copyOf(mScanFilters);
+        }
+    }
+
+    @GuardedBy("mLock")
+    private void updateFiltersLocked() {
         if (mScanFilters == null) {
             Log.e(TAG, "ScanFilters not set.");
             return;
@@ -95,22 +155,47 @@
         Blefilter.BleFilters.Builder filtersBuilder = Blefilter.BleFilters.newBuilder();
         for (ScanFilter scanFilter : mScanFilters) {
             PresenceScanFilter presenceScanFilter = (PresenceScanFilter) scanFilter;
-            Blefilter.BleFilter filter =
-                    Blefilter.BleFilter.newBuilder()
-                            .setId(mFilterId)
-                            .setUuid(PRESENCE_UUID)
-                            .setIntent(presenceScanFilter.getPresenceActions().get(0))
-                            .build();
-            filtersBuilder.addFilter(filter);
-            mFilterId++;
+            Blefilter.BleFilter.Builder filterBuilder = Blefilter.BleFilter.newBuilder();
+            for (PublicCredential credential : presenceScanFilter.getCredentials()) {
+                filterBuilder.addCertificate(toProtoPublicCredential(credential));
+            }
+            for (DataElement dataElement : presenceScanFilter.getExtendedProperties()) {
+                if (dataElement.getKey() == DataElement.DataType.ACCOUNT_KEY_DATA) {
+                    filterBuilder.addDataElement(toProtoDataElement(dataElement));
+                }
+            }
+            if (!presenceScanFilter.getPresenceActions().isEmpty()) {
+                filterBuilder.setIntent(presenceScanFilter.getPresenceActions().get(0));
+            }
+            filtersBuilder.addFilter(filterBuilder.build());
         }
-        mFilters = filtersBuilder.build();
         if (mChreStarted) {
-            sendFilters(mFilters);
+            sendFilters(filtersBuilder.build());
             mFilters = null;
         }
     }
 
+    private Blefilter.PublicateCertificate toProtoPublicCredential(PublicCredential credential) {
+        Log.d(TAG, String.format("Returns a PublicCertificate with authenticity key size %d and"
+                + " encrypted metadata key tag size %d", credential.getAuthenticityKey().length,
+                credential.getEncryptedMetadataKeyTag().length));
+        return Blefilter.PublicateCertificate.newBuilder()
+                .setAuthenticityKey(ByteString.copyFrom(credential.getAuthenticityKey()))
+                .setMetadataEncryptionKeyTag(
+                        ByteString.copyFrom(credential.getEncryptedMetadataKeyTag()))
+                .build();
+    }
+
+    private Blefilter.DataElement toProtoDataElement(DataElement dataElement) {
+        return Blefilter.DataElement.newBuilder()
+                        .setKey(
+                                Blefilter.DataElement.ElementType
+                                        .DE_FAST_PAIR_ACCOUNT_KEY)
+                        .setValue(ByteString.copyFrom(dataElement.getValue()))
+                        .setValueLength(FP_ACCOUNT_KEY_LENGTH)
+                        .build();
+    }
+
     private void sendFilters(Blefilter.BleFilters filters) {
         NanoAppMessage message =
                 NanoAppMessage.createMessageToNanoApp(
@@ -120,6 +205,16 @@
         }
     }
 
+    private void sendScreenUpdate(Boolean screenOn) {
+        Blefilter.BleConfig config = Blefilter.BleConfig.newBuilder().setScreenOn(screenOn).build();
+        NanoAppMessage message =
+                NanoAppMessage.createMessageToNanoApp(
+                        NANOAPP_ID, NANOAPP_MESSAGE_TYPE_CONFIG, config.toByteArray());
+        if (!mChreCommunication.sendMessageToNanoApp(message)) {
+            Log.e(TAG, "Failed to send config to CHRE.");
+        }
+    }
+
     private class ChreCallback implements ChreCommunication.ContextHubCommsCallback {
 
         @Override
@@ -127,6 +222,10 @@
             if (success) {
                 synchronized (ChreDiscoveryProvider.this) {
                     Log.i(TAG, "CHRE communication started");
+                    mIntentFilter.addAction(Intent.ACTION_SCREEN_ON);
+                    mIntentFilter.addAction(Intent.ACTION_USER_PRESENT);
+                    mIntentFilter.addAction(Intent.ACTION_SCREEN_OFF);
+                    mContext.registerReceiver(mScreenBroadcastReceiver, mIntentFilter);
                     mChreStarted = true;
                     if (mFilters != null) {
                         sendFilters(mFilters);
@@ -163,15 +262,81 @@
                     Blefilter.BleFilterResults results =
                             Blefilter.BleFilterResults.parseFrom(message.getMessageBody());
                     for (Blefilter.BleFilterResult filterResult : results.getResultList()) {
-                        Blefilter.PublicCredential credential = filterResult.getPublicCredential();
+                        // TODO(b/234653356): There are some duplicate fields set both in
+                        //  PresenceDevice and NearbyDeviceParcelable, cleanup is needed.
+                        byte[] salt = {1};
+                        byte[] secretId = {1};
+                        byte[] authenticityKey = {1};
+                        byte[] publicKey = {1};
+                        byte[] encryptedMetaData = {1};
+                        byte[] encryptedMetaDataTag = {1};
+                        if (filterResult.hasPublicCredential()) {
+                            Blefilter.PublicCredential credential =
+                                    filterResult.getPublicCredential();
+                            secretId = credential.getSecretId().toByteArray();
+                            authenticityKey = credential.getAuthenticityKey().toByteArray();
+                            publicKey = credential.getPublicKey().toByteArray();
+                            encryptedMetaData = credential.getEncryptedMetadata().toByteArray();
+                            encryptedMetaDataTag =
+                                    credential.getEncryptedMetadataTag().toByteArray();
+                        }
+                        PresenceDevice.Builder presenceDeviceBuilder =
+                                new PresenceDevice.Builder(
+                                                String.valueOf(filterResult.hashCode()),
+                                                salt,
+                                                secretId,
+                                                encryptedMetaData)
+                                        .setRssi(filterResult.getRssi())
+                                        .addMedium(NearbyDevice.Medium.BLE);
+                        // Data Elements reported from nanoapp added to Data Elements.
+                        // i.e. Fast Pair account keys, connection status and battery
+                        for (Blefilter.DataElement element : filterResult.getDataElementList()) {
+                            addDataElementsToPresenceDevice(element, presenceDeviceBuilder);
+                        }
+                        // BlE address appended to Data Element.
+                        if (filterResult.hasBluetoothAddress()) {
+                            presenceDeviceBuilder.addExtendedProperty(
+                                    new DataElement(
+                                            DataElement.DataType.BLE_ADDRESS,
+                                            filterResult.getBluetoothAddress().toByteArray()));
+                        }
+                        // BlE TX Power appended to Data Element.
+                        if (filterResult.hasTxPower()) {
+                            presenceDeviceBuilder.addExtendedProperty(
+                                    new DataElement(
+                                            DataElement.DataType.TX_POWER,
+                                            new byte[]{(byte) filterResult.getTxPower()}));
+                        }
+                        // BLE Service data appended to Data Elements.
+                        if (filterResult.hasBleServiceData()) {
+                            // Retrieves the length of the service data from the first byte,
+                            // and then skips the first byte and returns data[1 .. dataLength)
+                            // as the DataElement value.
+                            int dataLength = Byte.toUnsignedInt(
+                                    filterResult.getBleServiceData().byteAt(0));
+                            presenceDeviceBuilder.addExtendedProperty(
+                                    new DataElement(
+                                            DataElement.DataType.BLE_SERVICE_DATA,
+                                            filterResult.getBleServiceData()
+                                                    .substring(1, 1 + dataLength).toByteArray()));
+                        }
+                        // Add action
+                        if (filterResult.hasIntent()) {
+                            presenceDeviceBuilder.addExtendedProperty(
+                                    new DataElement(
+                                            DataElement.DataType.ACTION,
+                                            new byte[]{(byte) filterResult.getIntent()}));
+                        }
+
                         PublicCredential publicCredential =
                                 new PublicCredential.Builder(
-                                                credential.getSecretId().toByteArray(),
-                                                credential.getAuthenticityKey().toByteArray(),
-                                                credential.getPublicKey().toByteArray(),
-                                                credential.getEncryptedMetadata().toByteArray(),
-                                                credential.getEncryptedMetadataTag().toByteArray())
+                                                secretId,
+                                                authenticityKey,
+                                                publicKey,
+                                                encryptedMetaData,
+                                                encryptedMetaDataTag)
                                         .build();
+
                         NearbyDeviceParcelable device =
                                 new NearbyDeviceParcelable.Builder()
                                         .setScanType(SCAN_TYPE_NEARBY_PRESENCE)
@@ -180,15 +345,40 @@
                                         .setRssi(filterResult.getRssi())
                                         .setAction(filterResult.getIntent())
                                         .setPublicCredential(publicCredential)
+                                        .setPresenceDevice(presenceDeviceBuilder.build())
+                                        .setEncryptionKeyTag(encryptedMetaDataTag)
                                         .build();
                         mExecutor.execute(() -> mListener.onNearbyDeviceDiscovered(device));
                     }
-                } catch (InvalidProtocolBufferException e) {
-                    Log.e(
-                            TAG,
-                            String.format("Failed to decode the filter result %s", e.toString()));
+                } catch (Exception e) {
+                    Log.e(TAG, String.format("Failed to decode the filter result %s", e));
                 }
             }
         }
+
+        private void addDataElementsToPresenceDevice(Blefilter.DataElement element,
+                PresenceDevice.Builder presenceDeviceBuilder) {
+            int endIndex = element.hasValueLength() ? element.getValueLength() :
+                    element.getValue().size();
+            switch (element.getKey()) {
+                case DE_FAST_PAIR_ACCOUNT_KEY:
+                    presenceDeviceBuilder.addExtendedProperty(
+                            new DataElement(DataElement.DataType.ACCOUNT_KEY_DATA,
+                                    element.getValue().substring(0, endIndex).toByteArray()));
+                    break;
+                case DE_CONNECTION_STATUS:
+                    presenceDeviceBuilder.addExtendedProperty(
+                            new DataElement(DataElement.DataType.CONNECTION_STATUS,
+                                    element.getValue().substring(0, endIndex).toByteArray()));
+                    break;
+                case DE_BATTERY_STATUS:
+                    presenceDeviceBuilder.addExtendedProperty(
+                            new DataElement(DataElement.DataType.BATTERY,
+                                    element.getValue().substring(0, endIndex).toByteArray()));
+                    break;
+                default:
+                    break;
+            }
+        }
     }
 }
diff --git a/nearby/service/java/com/android/server/nearby/provider/DiscoveryProviderManager.java b/nearby/service/java/com/android/server/nearby/provider/DiscoveryProviderManager.java
index bdeab51..41d5686 100644
--- a/nearby/service/java/com/android/server/nearby/provider/DiscoveryProviderManager.java
+++ b/nearby/service/java/com/android/server/nearby/provider/DiscoveryProviderManager.java
@@ -23,8 +23,10 @@
 import android.annotation.Nullable;
 import android.app.AppOpsManager;
 import android.content.Context;
+import android.nearby.DataElement;
 import android.nearby.IScanListener;
 import android.nearby.NearbyDeviceParcelable;
+import android.nearby.NearbyManager;
 import android.nearby.PresenceScanFilter;
 import android.nearby.ScanFilter;
 import android.nearby.ScanRequest;
@@ -33,6 +35,7 @@
 import android.util.Log;
 
 import com.android.internal.annotations.GuardedBy;
+import com.android.internal.annotations.VisibleForTesting;
 import com.android.server.nearby.injector.Injector;
 import com.android.server.nearby.metrics.NearbyMetrics;
 import com.android.server.nearby.presence.PresenceDiscoveryResult;
@@ -54,7 +57,9 @@
     protected final Object mLock = new Object();
     private final Context mContext;
     private final BleDiscoveryProvider mBleDiscoveryProvider;
-    @Nullable private final ChreDiscoveryProvider mChreDiscoveryProvider;
+    @VisibleForTesting
+    @Nullable
+    final ChreDiscoveryProvider mChreDiscoveryProvider;
     private @ScanRequest.ScanMode int mScanMode;
     private final Injector mInjector;
 
@@ -92,10 +97,9 @@
                                                     scanFilter.getType()
                                                             == SCAN_TYPE_NEARBY_PRESENCE)
                                     .collect(Collectors.toList());
-                    Log.i(
-                            TAG,
-                            String.format("match with filters size: %d", presenceFilters.size()));
                     if (!presenceFilterMatches(nearbyDevice, presenceFilters)) {
+                        Log.d(TAG, "presence filter does not match for "
+                                + "the scanned Presence Device");
                         continue;
                     }
                 }
@@ -119,40 +123,73 @@
         Executor executor = Executors.newSingleThreadExecutor();
         mChreDiscoveryProvider =
                 new ChreDiscoveryProvider(
-                        mContext, new ChreCommunication(injector, executor), executor);
+                        mContext, new ChreCommunication(injector, mContext, executor), executor);
         mScanTypeScanListenerRecordMap = new HashMap<>();
         mInjector = injector;
     }
 
+    @VisibleForTesting
+    DiscoveryProviderManager(Context context, Injector injector,
+            BleDiscoveryProvider bleDiscoveryProvider,
+            ChreDiscoveryProvider chreDiscoveryProvider,
+            Map<IBinder, ScanListenerRecord> scanTypeScanListenerRecordMap) {
+        mContext = context;
+        mInjector = injector;
+        mBleDiscoveryProvider = bleDiscoveryProvider;
+        mChreDiscoveryProvider = chreDiscoveryProvider;
+        mScanTypeScanListenerRecordMap = scanTypeScanListenerRecordMap;
+    }
+
+    /** Called after boot completed. */
+    public void init() {
+        if (mInjector.getContextHubManager() != null) {
+            mChreDiscoveryProvider.init();
+        }
+        mChreDiscoveryProvider.getController().setListener(this);
+    }
+
     /**
      * Registers the listener in the manager and starts scan according to the requested scan mode.
      */
-    public boolean registerScanListener(ScanRequest scanRequest, IScanListener listener,
+    @NearbyManager.ScanStatus
+    public int registerScanListener(ScanRequest scanRequest, IScanListener listener,
             CallerIdentity callerIdentity) {
         synchronized (mLock) {
+            ScanListenerDeathRecipient deathRecipient = (listener != null)
+                    ? new ScanListenerDeathRecipient(listener) : null;
             IBinder listenerBinder = listener.asBinder();
+            if (listenerBinder != null && deathRecipient != null) {
+                try {
+                    listenerBinder.linkToDeath(deathRecipient, 0);
+                } catch (RemoteException e) {
+                    throw new IllegalArgumentException("Can't link to scan listener's death");
+                }
+            }
             if (mScanTypeScanListenerRecordMap.containsKey(listener.asBinder())) {
                 ScanRequest savedScanRequest =
                         mScanTypeScanListenerRecordMap.get(listenerBinder).getScanRequest();
                 if (scanRequest.equals(savedScanRequest)) {
                     Log.d(TAG, "Already registered the scanRequest: " + scanRequest);
-                    return true;
+                    return NearbyManager.ScanStatus.SUCCESS;
                 }
             }
             ScanListenerRecord scanListenerRecord =
-                    new ScanListenerRecord(scanRequest, listener, callerIdentity);
+                    new ScanListenerRecord(scanRequest, listener, callerIdentity, deathRecipient);
             mScanTypeScanListenerRecordMap.put(listenerBinder, scanListenerRecord);
 
-            if (!startProviders(scanRequest)) {
-                return false;
+            Boolean started = startProviders(scanRequest);
+            if (started == null) {
+                return NearbyManager.ScanStatus.UNKNOWN;
             }
-
+            if (!started) {
+                return NearbyManager.ScanStatus.ERROR;
+            }
             NearbyMetrics.logScanStarted(scanListenerRecord.hashCode(), scanRequest);
             if (mScanMode < scanRequest.getScanMode()) {
                 mScanMode = scanRequest.getScanMode();
                 invalidateProviderScanMode();
             }
-            return true;
+            return NearbyManager.ScanStatus.SUCCESS;
         }
     }
 
@@ -172,6 +209,10 @@
 
             ScanListenerRecord removedRecord =
                     mScanTypeScanListenerRecordMap.remove(listenerBinder);
+            ScanListenerDeathRecipient deathRecipient = removedRecord.getDeathRecipient();
+            if (listenerBinder != null && deathRecipient != null) {
+                listenerBinder.unlinkToDeath(removedRecord.getDeathRecipient(), 0);
+            }
             Log.v(TAG, "DiscoveryProviderManager unregistered scan listener.");
             NearbyMetrics.logScanStopped(removedRecord.hashCode(), removedRecord.getScanRequest());
             if (mScanTypeScanListenerRecordMap.isEmpty()) {
@@ -203,34 +244,91 @@
         }
     }
 
-    // Returns false when fail to start all the providers. Returns true if any one of the provider
-    // starts successfully.
-    private boolean startProviders(ScanRequest scanRequest) {
-        if (scanRequest.isBleEnabled()) {
-            if (mChreDiscoveryProvider.available()
-                    && scanRequest.getScanType() == SCAN_TYPE_NEARBY_PRESENCE) {
-                startChreProvider();
-            } else {
-                startBleProvider(scanRequest);
+    /**
+     * @return {@code null} when all providers are initializing
+     * {@code false} when fail to start all the providers
+     * {@code true} when any one of the provider starts successfully
+     */
+    @VisibleForTesting
+    @Nullable
+    Boolean startProviders(ScanRequest scanRequest) {
+        if (!scanRequest.isBleEnabled()) {
+            Log.w(TAG, "failed to start any provider because client disabled BLE");
+            return false;
+        }
+        List<ScanFilter> scanFilters = getPresenceScanFilters();
+        boolean chreOnly = isChreOnly(scanFilters);
+        Boolean chreAvailable = mChreDiscoveryProvider.available();
+        if (chreAvailable == null) {
+            if (chreOnly) {
+                Log.w(TAG, "client wants CHRE only and Nearby service is still querying CHRE"
+                        + " status");
+                return null;
             }
+            startBleProvider(scanFilters);
             return true;
         }
+
+        if (!chreAvailable) {
+            if (chreOnly) {
+                Log.w(TAG, "failed to start any provider because client wants CHRE only and CHRE"
+                        + " is not available");
+                return false;
+            }
+            startBleProvider(scanFilters);
+            return true;
+        }
+
+        if (scanRequest.getScanType() == SCAN_TYPE_NEARBY_PRESENCE) {
+            startChreProvider(scanFilters);
+            return true;
+        }
+
+        startBleProvider(scanFilters);
+        return true;
+    }
+
+    private static boolean isChreOnly(List<ScanFilter> scanFilters) {
+        for (ScanFilter scanFilter : scanFilters) {
+            List<DataElement> dataElements =
+                    ((PresenceScanFilter) scanFilter).getExtendedProperties();
+            for (DataElement dataElement : dataElements) {
+                if (dataElement.getKey() != DataElement.DataType.SCAN_MODE) {
+                    continue;
+                }
+                byte[] scanModeValue = dataElement.getValue();
+                if (scanModeValue == null || scanModeValue.length == 0) {
+                    break;
+                }
+                if (Byte.toUnsignedInt(scanModeValue[0]) == ScanRequest.SCAN_MODE_CHRE_ONLY) {
+                    return true;
+                }
+            }
+
+        }
         return false;
     }
 
-    private void startBleProvider(ScanRequest scanRequest) {
+    private void startBleProvider(List<ScanFilter> scanFilters) {
         if (!mBleDiscoveryProvider.getController().isStarted()) {
             Log.d(TAG, "DiscoveryProviderManager starts Ble scanning.");
-            mBleDiscoveryProvider.getController().start();
             mBleDiscoveryProvider.getController().setListener(this);
-            mBleDiscoveryProvider.getController().setProviderScanMode(scanRequest.getScanMode());
+            mBleDiscoveryProvider.getController().setProviderScanMode(mScanMode);
+            mBleDiscoveryProvider.getController().setProviderScanFilters(scanFilters);
+            mBleDiscoveryProvider.getController().start();
         }
     }
 
-    private void startChreProvider() {
+    @VisibleForTesting
+    void startChreProvider(List<ScanFilter> scanFilters) {
         Log.d(TAG, "DiscoveryProviderManager starts CHRE scanning.");
+        mChreDiscoveryProvider.getController().setProviderScanFilters(scanFilters);
+        mChreDiscoveryProvider.getController().setProviderScanMode(mScanMode);
+        mChreDiscoveryProvider.getController().start();
+    }
+
+    private List<ScanFilter> getPresenceScanFilters() {
         synchronized (mLock) {
-            mChreDiscoveryProvider.getController().setListener(this);
             List<ScanFilter> scanFilters = new ArrayList();
             for (IBinder listenerBinder : mScanTypeScanListenerRecordMap.keySet()) {
                 ScanListenerRecord record = mScanTypeScanListenerRecordMap.get(listenerBinder);
@@ -242,9 +340,7 @@
                                 .collect(Collectors.toList());
                 scanFilters.addAll(presenceFilters);
             }
-            mChreDiscoveryProvider.getController().setProviderScanFilters(scanFilters);
-            mChreDiscoveryProvider.getController().setProviderScanMode(mScanMode);
-            mChreDiscoveryProvider.getController().start();
+            return scanFilters;
         }
     }
 
@@ -257,11 +353,13 @@
         mBleDiscoveryProvider.getController().stop();
     }
 
-    private void stopChreProvider() {
+    @VisibleForTesting
+    protected void stopChreProvider() {
         mChreDiscoveryProvider.getController().stop();
     }
 
-    private void invalidateProviderScanMode() {
+    @VisibleForTesting
+    void invalidateProviderScanMode() {
         if (mBleDiscoveryProvider.getController().isStarted()) {
             mBleDiscoveryProvider.getController().setProviderScanMode(mScanMode);
         } else {
@@ -272,7 +370,8 @@
         }
     }
 
-    private static boolean presenceFilterMatches(
+    @VisibleForTesting
+    static boolean presenceFilterMatches(
             NearbyDeviceParcelable device, List<ScanFilter> scanFilters) {
         if (scanFilters.isEmpty()) {
             return true;
@@ -287,7 +386,22 @@
         return false;
     }
 
-    private static class ScanListenerRecord {
+    class ScanListenerDeathRecipient implements IBinder.DeathRecipient {
+        public IScanListener listener;
+
+        ScanListenerDeathRecipient(IScanListener listener) {
+            this.listener = listener;
+        }
+
+        @Override
+        public void binderDied() {
+            Log.d(TAG, "Binder is dead - unregistering scan listener");
+            unregisterScanListener(listener);
+        }
+    }
+
+    @VisibleForTesting
+    static class ScanListenerRecord {
 
         private final ScanRequest mScanRequest;
 
@@ -295,11 +409,14 @@
 
         private final CallerIdentity mCallerIdentity;
 
+        private final ScanListenerDeathRecipient mDeathRecipient;
+
         ScanListenerRecord(ScanRequest scanRequest, IScanListener iScanListener,
-                CallerIdentity callerIdentity) {
+                CallerIdentity callerIdentity, ScanListenerDeathRecipient deathRecipient) {
             mScanListener = iScanListener;
             mScanRequest = scanRequest;
             mCallerIdentity = callerIdentity;
+            mDeathRecipient = deathRecipient;
         }
 
         IScanListener getScanListener() {
@@ -314,6 +431,10 @@
             return mCallerIdentity;
         }
 
+        ScanListenerDeathRecipient getDeathRecipient()  {
+            return mDeathRecipient;
+        }
+
         @Override
         public boolean equals(Object other) {
             if (other instanceof ScanListenerRecord) {
diff --git a/nearby/service/java/com/android/server/nearby/provider/FastPairDataProvider.java b/nearby/service/java/com/android/server/nearby/provider/FastPairDataProvider.java
index 0f99a2f..d925f07 100644
--- a/nearby/service/java/com/android/server/nearby/provider/FastPairDataProvider.java
+++ b/nearby/service/java/com/android/server/nearby/provider/FastPairDataProvider.java
@@ -30,7 +30,7 @@
 
 import androidx.annotation.WorkerThread;
 
-import com.android.server.nearby.common.bloomfilter.BloomFilter;
+import com.android.internal.annotations.VisibleForTesting;
 import com.android.server.nearby.fastpair.footprint.FastPairUploadInfo;
 
 import java.util.ArrayList;
@@ -80,6 +80,11 @@
         }
     }
 
+    @VisibleForTesting
+    void setProxyDataProvider(ProxyFastPairDataProvider proxyFastPairDataProvider) {
+        this.mProxyFastPairDataProvider = proxyFastPairDataProvider;
+    }
+
     /**
      * Loads FastPairAntispoofKeyDeviceMetadata.
      *
@@ -136,14 +141,6 @@
     }
 
     /**
-     * Get recognized device from bloom filter.
-     */
-    public Data.FastPairDeviceWithAccountKey getRecognizedDevice(BloomFilter bloomFilter,
-            byte[] salt) {
-        return Data.FastPairDeviceWithAccountKey.newBuilder().build();
-    }
-
-    /**
      * Loads FastPair device accountKeys for a given account, but not other detailed fields.
      *
      * @throws IllegalStateException If ProxyFastPairDataProvider is not available.
diff --git a/nearby/service/java/com/android/server/nearby/util/DataUtils.java b/nearby/service/java/com/android/server/nearby/util/DataUtils.java
index 8bb83e9..c3bae08 100644
--- a/nearby/service/java/com/android/server/nearby/util/DataUtils.java
+++ b/nearby/service/java/com/android/server/nearby/util/DataUtils.java
@@ -57,11 +57,9 @@
      */
     public static String toString(ScanFastPairStoreItem item) {
         return "ScanFastPairStoreItem=[address:" + item.getAddress()
-                + ", actionUr:" + item.getActionUrl()
+                + ", actionUrl:" + item.getActionUrl()
                 + ", deviceName:" + item.getDeviceName()
-                + ", iconPng:" + item.getIconPng()
                 + ", iconFifeUrl:" + item.getIconFifeUrl()
-                + ", antiSpoofingKeyPair:" + item.getAntiSpoofingPublicKey()
                 + ", fastPairStrings:" + toString(item.getFastPairStrings())
                 + "]";
     }
diff --git a/nearby/service/java/com/android/server/nearby/util/FastPairDecoder.java b/nearby/service/java/com/android/server/nearby/util/FastPairDecoder.java
deleted file mode 100644
index 6021ff6..0000000
--- a/nearby/service/java/com/android/server/nearby/util/FastPairDecoder.java
+++ /dev/null
@@ -1,258 +0,0 @@
-/*
- * Copyright (C) 2022 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.android.server.nearby.util;
-
-import android.annotation.Nullable;
-import android.bluetooth.le.ScanRecord;
-import android.os.ParcelUuid;
-import android.util.SparseArray;
-
-import com.android.server.nearby.common.ble.BleFilter;
-import com.android.server.nearby.common.ble.BleRecord;
-
-import java.util.Arrays;
-
-/**
- * Parses Fast Pair information out of {@link BleRecord}s.
- *
- * <p>There are 2 different packet formats that are supported, which is used can be determined by
- * packet length:
- *
- * <p>For 3-byte packets, the full packet is the model ID.
- *
- * <p>For all other packets, the first byte is the header, followed by the model ID, followed by
- * zero or more extra fields. Each field has its own header byte followed by the field value. The
- * packet header is formatted as 0bVVVLLLLR (V = version, L = model ID length, R = reserved) and
- * each extra field header is 0bLLLLTTTT (L = field length, T = field type).
- */
-public class FastPairDecoder {
-
-    private static final int FIELD_TYPE_BLOOM_FILTER = 0;
-    private static final int FIELD_TYPE_BLOOM_FILTER_SALT = 1;
-    private static final int FIELD_TYPE_BLOOM_FILTER_NO_NOTIFICATION = 2;
-    private static final int FIELD_TYPE_BATTERY = 3;
-    private static final int FIELD_TYPE_BATTERY_NO_NOTIFICATION = 4;
-    public static final int FIELD_TYPE_CONNECTION_STATE = 5;
-    private static final int FIELD_TYPE_RANDOM_RESOLVABLE_DATA = 6;
-
-
-    /** FE2C is the 16-bit Service UUID. The rest is the base UUID. See BluetoothUuid (hidden). */
-    private static final ParcelUuid FAST_PAIR_SERVICE_PARCEL_UUID =
-            ParcelUuid.fromString("0000FE2C-0000-1000-8000-00805F9B34FB");
-
-    /** The filter you use to scan for Fast Pair BLE advertisements. */
-    public static final BleFilter FILTER =
-            new BleFilter.Builder().setServiceData(FAST_PAIR_SERVICE_PARCEL_UUID,
-                    new byte[0]).build();
-
-    // NOTE: Ensure that all bitmasks are always ints, not bytes so that bitshifting works correctly
-    // without needing worry about signing errors.
-    private static final int HEADER_VERSION_BITMASK = 0b11100000;
-    private static final int HEADER_LENGTH_BITMASK = 0b00011110;
-    private static final int HEADER_VERSION_OFFSET = 5;
-    private static final int HEADER_LENGTH_OFFSET = 1;
-
-    private static final int EXTRA_FIELD_LENGTH_BITMASK = 0b11110000;
-    private static final int EXTRA_FIELD_TYPE_BITMASK = 0b00001111;
-    private static final int EXTRA_FIELD_LENGTH_OFFSET = 4;
-    private static final int EXTRA_FIELD_TYPE_OFFSET = 0;
-
-    private static final int MIN_ID_LENGTH = 3;
-    private static final int MAX_ID_LENGTH = 14;
-    private static final int HEADER_INDEX = 0;
-    private static final int HEADER_LENGTH = 1;
-    private static final int FIELD_HEADER_LENGTH = 1;
-
-    // Not using java.util.IllegalFormatException because it is unchecked.
-    private static class IllegalFormatException extends Exception {
-        private IllegalFormatException(String message) {
-            super(message);
-        }
-    }
-
-    /**
-     * Gets model id data from broadcast
-     */
-    @Nullable
-    public static byte[] getModelId(@Nullable byte[] serviceData) {
-        if (serviceData == null) {
-            return null;
-        }
-
-        if (serviceData.length >= MIN_ID_LENGTH) {
-            if (serviceData.length == MIN_ID_LENGTH) {
-                // If the length == 3, all bytes are the ID. See flag docs for more about
-                // endianness.
-                return serviceData;
-            } else {
-                // Otherwise, the first byte is a header which contains the length of the big-endian
-                // model ID that follows. The model ID will be trimmed if it contains leading zeros.
-                int idIndex = 1;
-                int end = idIndex + getIdLength(serviceData);
-                while (serviceData[idIndex] == 0 && end - idIndex > MIN_ID_LENGTH) {
-                    idIndex++;
-                }
-                return Arrays.copyOfRange(serviceData, idIndex, end);
-            }
-        }
-        return null;
-    }
-
-    /** Gets the FastPair service data array if available, otherwise returns null. */
-    @Nullable
-    public static byte[] getServiceDataArray(BleRecord bleRecord) {
-        return bleRecord.getServiceData(FAST_PAIR_SERVICE_PARCEL_UUID);
-    }
-
-    /** Gets the FastPair service data array if available, otherwise returns null. */
-    @Nullable
-    public static byte[] getServiceDataArray(ScanRecord scanRecord) {
-        return scanRecord.getServiceData(FAST_PAIR_SERVICE_PARCEL_UUID);
-    }
-
-    /** Gets the bloom filter from the extra fields if available, otherwise returns null. */
-    @Nullable
-    public static byte[] getBloomFilter(@Nullable byte[] serviceData) {
-        return getExtraField(serviceData, FIELD_TYPE_BLOOM_FILTER);
-    }
-
-    /** Gets the bloom filter salt from the extra fields if available, otherwise returns null. */
-    @Nullable
-    public static byte[] getBloomFilterSalt(byte[] serviceData) {
-        return getExtraField(serviceData, FIELD_TYPE_BLOOM_FILTER_SALT);
-    }
-
-    /**
-     * Gets the suppress notification with bloom filter from the extra fields if available,
-     * otherwise returns null.
-     */
-    @Nullable
-    public static byte[] getBloomFilterNoNotification(@Nullable byte[] serviceData) {
-        return getExtraField(serviceData, FIELD_TYPE_BLOOM_FILTER_NO_NOTIFICATION);
-    }
-
-    /**
-     * Get random resolvableData
-     */
-    @Nullable
-    public static byte[] getRandomResolvableData(byte[] serviceData) {
-        return getExtraField(serviceData, FIELD_TYPE_RANDOM_RESOLVABLE_DATA);
-    }
-
-    @Nullable
-    private static byte[] getExtraField(@Nullable byte[] serviceData, int fieldId) {
-        if (serviceData == null || serviceData.length < HEADER_INDEX + HEADER_LENGTH) {
-            return null;
-        }
-        try {
-            return getExtraFields(serviceData).get(fieldId);
-        } catch (IllegalFormatException e) {
-            return null;
-        }
-    }
-
-    /** Gets extra field data at the end of the packet, defined by the extra field header. */
-    private static SparseArray<byte[]> getExtraFields(byte[] serviceData)
-            throws IllegalFormatException {
-        SparseArray<byte[]> extraFields = new SparseArray<>();
-        if (getVersion(serviceData) != 0) {
-            return extraFields;
-        }
-        int headerIndex = getFirstExtraFieldHeaderIndex(serviceData);
-        while (headerIndex < serviceData.length) {
-            int length = getExtraFieldLength(serviceData, headerIndex);
-            int index = headerIndex + FIELD_HEADER_LENGTH;
-            int type = getExtraFieldType(serviceData, headerIndex);
-            int end = index + length;
-            if (extraFields.get(type) == null) {
-                if (end <= serviceData.length) {
-                    extraFields.put(type, Arrays.copyOfRange(serviceData, index, end));
-                } else {
-                    throw new IllegalFormatException(
-                            "Invalid length, " + end + " is longer than service data size "
-                                    + serviceData.length);
-                }
-            }
-            headerIndex = end;
-        }
-        return extraFields;
-    }
-
-    /** Checks whether or not a valid ID is included in the service data packet. */
-    public static boolean hasBeaconIdBytes(BleRecord bleRecord) {
-        byte[] serviceData = bleRecord.getServiceData(FAST_PAIR_SERVICE_PARCEL_UUID);
-        return checkModelId(serviceData);
-    }
-
-    /** Check whether byte array is FastPair model id or not. */
-    public static boolean checkModelId(@Nullable byte[] scanResult) {
-        return scanResult != null
-                // The 3-byte format has no header byte (all bytes are the ID).
-                && (scanResult.length == MIN_ID_LENGTH
-                // Header byte exists. We support only format version 0. (A different version
-                // indicates
-                // a breaking change in the format.)
-                || (scanResult.length > MIN_ID_LENGTH
-                && getVersion(scanResult) == 0
-                && isIdLengthValid(scanResult)));
-    }
-
-    /** Checks whether or not bloom filter is included in the service data packet. */
-    public static boolean hasBloomFilter(BleRecord bleRecord) {
-        return (getBloomFilter(getServiceDataArray(bleRecord)) != null
-                || getBloomFilterNoNotification(getServiceDataArray(bleRecord)) != null);
-    }
-
-    /** Checks whether or not bloom filter is included in the service data packet. */
-    public static boolean hasBloomFilter(ScanRecord scanRecord) {
-        return (getBloomFilter(getServiceDataArray(scanRecord)) != null
-                || getBloomFilterNoNotification(getServiceDataArray(scanRecord)) != null);
-    }
-
-    private static int getVersion(byte[] serviceData) {
-        return serviceData.length == MIN_ID_LENGTH
-                ? 0
-                : (serviceData[HEADER_INDEX] & HEADER_VERSION_BITMASK) >> HEADER_VERSION_OFFSET;
-    }
-
-    private static int getIdLength(byte[] serviceData) {
-        return serviceData.length == MIN_ID_LENGTH
-                ? MIN_ID_LENGTH
-                : (serviceData[HEADER_INDEX] & HEADER_LENGTH_BITMASK) >> HEADER_LENGTH_OFFSET;
-    }
-
-    private static int getFirstExtraFieldHeaderIndex(byte[] serviceData) {
-        return HEADER_INDEX + HEADER_LENGTH + getIdLength(serviceData);
-    }
-
-    private static int getExtraFieldLength(byte[] serviceData, int extraFieldIndex) {
-        return (serviceData[extraFieldIndex] & EXTRA_FIELD_LENGTH_BITMASK)
-                >> EXTRA_FIELD_LENGTH_OFFSET;
-    }
-
-    private static int getExtraFieldType(byte[] serviceData, int extraFieldIndex) {
-        return (serviceData[extraFieldIndex] & EXTRA_FIELD_TYPE_BITMASK) >> EXTRA_FIELD_TYPE_OFFSET;
-    }
-
-    private static boolean isIdLengthValid(byte[] serviceData) {
-        int idLength = getIdLength(serviceData);
-        return MIN_ID_LENGTH <= idLength
-                && idLength <= MAX_ID_LENGTH
-                && idLength + HEADER_LENGTH <= serviceData.length;
-    }
-}
-
diff --git a/nearby/service/java/com/android/server/nearby/util/encryption/Cryptor.java b/nearby/service/java/com/android/server/nearby/util/encryption/Cryptor.java
new file mode 100644
index 0000000..3c5132d
--- /dev/null
+++ b/nearby/service/java/com/android/server/nearby/util/encryption/Cryptor.java
@@ -0,0 +1,149 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.nearby.util.encryption;
+
+import static com.android.server.nearby.NearbyService.TAG;
+
+import android.util.Log;
+
+import androidx.annotation.Nullable;
+
+import java.security.InvalidKeyException;
+import java.security.NoSuchAlgorithmException;
+
+import javax.crypto.Mac;
+import javax.crypto.spec.SecretKeySpec;
+
+/** Class for encryption/decryption functionality. */
+public abstract class Cryptor {
+
+    /** AES only supports key sizes of 16, 24 or 32 bytes. */
+    static final int AUTHENTICITY_KEY_BYTE_SIZE = 16;
+
+    private static final String HMAC_SHA256_ALGORITHM = "HmacSHA256";
+
+    /**
+     * Encrypt the provided data blob.
+     *
+     * @param data data blob to be encrypted.
+     * @param salt used for IV
+     * @param secretKeyBytes secrete key accessed from credentials
+     * @return encrypted data, {@code null} if failed to encrypt.
+     */
+    @Nullable
+    public byte[] encrypt(byte[] data, byte[] salt, byte[] secretKeyBytes) {
+        return data;
+    }
+
+    /**
+     * Decrypt the original data blob from the provided byte array.
+     *
+     * @param encryptedData data blob to be decrypted.
+     * @param salt used for IV
+     * @param secretKeyBytes secrete key accessed from credentials
+     * @return decrypted data, {@code null} if failed to decrypt.
+     */
+    @Nullable
+    public byte[] decrypt(byte[] encryptedData, byte[] salt, byte[] secretKeyBytes) {
+        return encryptedData;
+    }
+
+    /**
+     * Generates a digital signature for the data.
+     *
+     * @return signature {@code null} if failed to sign
+     */
+    @Nullable
+    public byte[] sign(byte[] data, byte[] key) {
+        return new byte[0];
+    }
+
+    /**
+     * Verifies the signature generated by data and key, with the original signed data
+     */
+    public boolean verify(byte[] data, byte[] key, byte[] signature) {
+        return true;
+    }
+
+    /**
+     * @return length of the signature generated
+     */
+    public int getSignatureLength() {
+        return 0;
+    }
+
+    /**
+     * A HAMC sha256 based HKDF algorithm to pseudo randomly hash data and salt into a byte array of
+     * given size.
+     */
+    // Based on google3/third_party/tink/java/src/main/java/com/google/crypto/tink/subtle/Hkdf.java
+    @Nullable
+    static byte[] computeHkdf(byte[] ikm, byte[] salt, int size) {
+        Mac mac;
+        try {
+            mac = Mac.getInstance(HMAC_SHA256_ALGORITHM);
+        } catch (NoSuchAlgorithmException e) {
+            Log.w(TAG, "HMAC_SHA256_ALGORITHM is not supported.", e);
+            return null;
+        }
+
+        if (size > 255 * mac.getMacLength()) {
+            Log.w(TAG, "Size too large.");
+            return null;
+        }
+
+        if (salt.length == 0) {
+            Log.w(TAG, "Salt cannot be empty.");
+            return null;
+        }
+
+        try {
+            mac.init(new SecretKeySpec(salt, HMAC_SHA256_ALGORITHM));
+        } catch (InvalidKeyException e) {
+            Log.w(TAG, "Invalid key.", e);
+            return null;
+        }
+
+        byte[] prk = mac.doFinal(ikm);
+        byte[] result = new byte[size];
+        try {
+            mac.init(new SecretKeySpec(prk, HMAC_SHA256_ALGORITHM));
+        } catch (InvalidKeyException e) {
+            Log.w(TAG, "Invalid key.", e);
+            return null;
+        }
+
+        byte[] digest = new byte[0];
+        int ctr = 1;
+        int pos = 0;
+        while (true) {
+            mac.update(digest);
+            mac.update((byte) ctr);
+            digest = mac.doFinal();
+            if (pos + digest.length < size) {
+                System.arraycopy(digest, 0, result, pos, digest.length);
+                pos += digest.length;
+                ctr++;
+            } else {
+                System.arraycopy(digest, 0, result, pos, size - pos);
+                break;
+            }
+        }
+
+        return result;
+    }
+}
diff --git a/nearby/service/java/com/android/server/nearby/util/encryption/CryptorImpFake.java b/nearby/service/java/com/android/server/nearby/util/encryption/CryptorImpFake.java
new file mode 100644
index 0000000..1c0ec9e
--- /dev/null
+++ b/nearby/service/java/com/android/server/nearby/util/encryption/CryptorImpFake.java
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.nearby.util.encryption;
+
+import androidx.annotation.Nullable;
+
+/**
+ * A Cryptor that returns the original data without actual encryption
+ */
+public class CryptorImpFake extends Cryptor {
+    // Lazily instantiated when {@link #getInstance()} is called.
+    @Nullable
+    private static CryptorImpFake sCryptor;
+
+    /** Returns an instance of CryptorImpFake. */
+    public static CryptorImpFake getInstance() {
+        if (sCryptor == null) {
+            sCryptor = new CryptorImpFake();
+        }
+        return sCryptor;
+    }
+
+    private CryptorImpFake() {
+    }
+}
diff --git a/nearby/service/java/com/android/server/nearby/util/encryption/CryptorImpIdentityV1.java b/nearby/service/java/com/android/server/nearby/util/encryption/CryptorImpIdentityV1.java
new file mode 100644
index 0000000..b0e19b4
--- /dev/null
+++ b/nearby/service/java/com/android/server/nearby/util/encryption/CryptorImpIdentityV1.java
@@ -0,0 +1,208 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.nearby.util.encryption;
+
+import static com.android.server.nearby.NearbyService.TAG;
+
+import android.security.keystore.KeyProperties;
+import android.util.Log;
+
+import androidx.annotation.Nullable;
+
+import com.android.internal.annotations.VisibleForTesting;
+
+import java.security.InvalidAlgorithmParameterException;
+import java.security.InvalidKeyException;
+import java.security.NoSuchAlgorithmException;
+import java.util.Arrays;
+
+import javax.crypto.BadPaddingException;
+import javax.crypto.Cipher;
+import javax.crypto.IllegalBlockSizeException;
+import javax.crypto.NoSuchPaddingException;
+import javax.crypto.SecretKey;
+import javax.crypto.spec.IvParameterSpec;
+import javax.crypto.spec.SecretKeySpec;
+
+/**
+ * {@link android.nearby.BroadcastRequest#PRESENCE_VERSION_V1} for identity
+ * encryption and decryption.
+ */
+public class CryptorImpIdentityV1 extends Cryptor {
+
+    // 3 16 byte arrays known by both the encryptor and decryptor.
+    private static final byte[] EK_IV =
+            new byte[] {14, -123, -39, 42, 109, 127, 83, 27, 27, 11, 91, -38, 92, 17, -84, 66};
+    private static final byte[] ESALT_IV =
+            new byte[] {46, 83, -19, 10, -127, -31, -31, 12, 31, 76, 63, -9, 33, -66, 15, -10};
+    private static final byte[] KTAG_IV =
+            {-22, -83, -6, 67, 16, -99, -13, -9, 8, -3, -16, 37, -75, 47, 1, -56};
+
+    /** Length of encryption key required by AES/GCM encryption. */
+    private static final int ENCRYPTION_KEY_SIZE = 32;
+
+    /** Length of salt required by AES/GCM encryption. */
+    private static final int AES_CTR_IV_SIZE = 16;
+
+    /** Length HMAC tag */
+    public static final int HMAC_TAG_SIZE = 8;
+
+    /**
+     * In the form of "algorithm/mode/padding". Must be the same across broadcast and scan devices.
+     */
+    private static final String CIPHER_ALGORITHM = "AES/CTR/NoPadding";
+
+    @VisibleForTesting
+    static final String ENCRYPT_ALGORITHM = KeyProperties.KEY_ALGORITHM_AES;
+
+    // Lazily instantiated when {@link #getInstance()} is called.
+    @Nullable private static CryptorImpIdentityV1 sCryptor;
+
+    /** Returns an instance of CryptorImpIdentityV1. */
+    public static CryptorImpIdentityV1 getInstance() {
+        if (sCryptor == null) {
+            sCryptor = new CryptorImpIdentityV1();
+        }
+        return sCryptor;
+    }
+
+    @Nullable
+    @Override
+    public byte[] encrypt(byte[] data, byte[] salt, byte[] authenticityKey) {
+        if (authenticityKey.length != AUTHENTICITY_KEY_BYTE_SIZE) {
+            Log.w(TAG, "Illegal authenticity key size");
+            return null;
+        }
+
+        // Generates a 32 bytes encryption key from authenticity_key
+        byte[] encryptionKey = Cryptor.computeHkdf(authenticityKey, EK_IV, ENCRYPTION_KEY_SIZE);
+        if (encryptionKey == null) {
+            Log.e(TAG, "Failed to generate encryption key.");
+            return null;
+        }
+
+        // Encrypts the data using the encryption key
+        SecretKey secretKey = new SecretKeySpec(encryptionKey, ENCRYPT_ALGORITHM);
+        Cipher cipher;
+        try {
+            cipher = Cipher.getInstance(CIPHER_ALGORITHM);
+        } catch (NoSuchAlgorithmException | NoSuchPaddingException e) {
+            Log.e(TAG, "Failed to encrypt with secret key.", e);
+            return null;
+        }
+        byte[] esalt = Cryptor.computeHkdf(salt, ESALT_IV, AES_CTR_IV_SIZE);
+        if (esalt == null) {
+            Log.e(TAG, "Failed to generate salt.");
+            return null;
+        }
+        try {
+            cipher.init(Cipher.ENCRYPT_MODE, secretKey, new IvParameterSpec(esalt));
+        } catch (InvalidKeyException | InvalidAlgorithmParameterException e) {
+            Log.e(TAG, "Failed to initialize cipher.", e);
+            return null;
+        }
+        try {
+            return cipher.doFinal(data);
+        } catch (IllegalBlockSizeException | BadPaddingException e) {
+            Log.e(TAG, "Failed to encrypt with secret key.", e);
+            return null;
+        }
+    }
+
+    @Nullable
+    @Override
+    public byte[] decrypt(byte[] encryptedData, byte[] salt, byte[] authenticityKey) {
+        if (authenticityKey.length != AUTHENTICITY_KEY_BYTE_SIZE) {
+            Log.w(TAG, "Illegal authenticity key size");
+            return null;
+        }
+
+        // Generates a 32 bytes encryption key from authenticity_key
+        byte[] encryptionKey = Cryptor.computeHkdf(authenticityKey, EK_IV, ENCRYPTION_KEY_SIZE);
+        if (encryptionKey == null) {
+            Log.e(TAG, "Failed to generate encryption key.");
+            return null;
+        }
+
+        // Decrypts the data using the encryption key
+        SecretKey secretKey = new SecretKeySpec(encryptionKey, ENCRYPT_ALGORITHM);
+        Cipher cipher;
+        try {
+            cipher = Cipher.getInstance(CIPHER_ALGORITHM);
+        } catch (NoSuchAlgorithmException | NoSuchPaddingException e) {
+            Log.e(TAG, "Failed to get cipher instance.", e);
+            return null;
+        }
+        byte[] esalt = Cryptor.computeHkdf(salt, ESALT_IV, AES_CTR_IV_SIZE);
+        if (esalt == null) {
+            return null;
+        }
+        try {
+            cipher.init(Cipher.DECRYPT_MODE, secretKey, new IvParameterSpec(esalt));
+        } catch (InvalidKeyException | InvalidAlgorithmParameterException e) {
+            Log.e(TAG, "Failed to initialize cipher.", e);
+            return null;
+        }
+
+        try {
+            return cipher.doFinal(encryptedData);
+        } catch (IllegalBlockSizeException | BadPaddingException e) {
+            Log.e(TAG, "Failed to decrypt bytes with secret key.", e);
+            return null;
+        }
+    }
+
+    /**
+     * Generates a digital signature for the data.
+     *
+     * @return signature {@code null} if failed to sign
+     */
+    @Nullable
+    @Override
+    public byte[] sign(byte[] data, byte[] salt) {
+        if (data == null) {
+            Log.e(TAG, "Not generate HMAC tag because of invalid data input.");
+            return null;
+        }
+
+        // Generates a 8 bytes HMAC tag
+        return Cryptor.computeHkdf(data, salt, HMAC_TAG_SIZE);
+    }
+
+    /**
+     * Generates a digital signature for the data.
+     * Uses KTAG_IV as salt value.
+     */
+    @Nullable
+    public byte[] sign(byte[] data) {
+        // Generates a 8 bytes HMAC tag
+        return sign(data, KTAG_IV);
+    }
+
+    @Override
+    public boolean verify(byte[] data, byte[] key, byte[] signature) {
+        return Arrays.equals(sign(data, key), signature);
+    }
+
+    /**
+     * Verifies the signature generated by data and key, with the original signed data. Uses
+     * KTAG_IV as salt value.
+     */
+    public boolean verify(byte[] data, byte[] signature) {
+        return verify(data, KTAG_IV, signature);
+    }
+}
diff --git a/nearby/service/java/com/android/server/nearby/util/encryption/CryptorImpV1.java b/nearby/service/java/com/android/server/nearby/util/encryption/CryptorImpV1.java
new file mode 100644
index 0000000..15073fb
--- /dev/null
+++ b/nearby/service/java/com/android/server/nearby/util/encryption/CryptorImpV1.java
@@ -0,0 +1,212 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.nearby.util.encryption;
+
+import static com.android.server.nearby.NearbyService.TAG;
+
+import android.security.keystore.KeyProperties;
+import android.util.Log;
+
+import androidx.annotation.Nullable;
+
+import com.android.internal.annotations.VisibleForTesting;
+
+import java.security.InvalidAlgorithmParameterException;
+import java.security.InvalidKeyException;
+import java.security.NoSuchAlgorithmException;
+import java.util.Arrays;
+
+import javax.crypto.BadPaddingException;
+import javax.crypto.Cipher;
+import javax.crypto.IllegalBlockSizeException;
+import javax.crypto.NoSuchPaddingException;
+import javax.crypto.SecretKey;
+import javax.crypto.spec.IvParameterSpec;
+import javax.crypto.spec.SecretKeySpec;
+
+/**
+ * {@link android.nearby.BroadcastRequest#PRESENCE_VERSION_V1} for encryption and decryption.
+ */
+public class CryptorImpV1 extends Cryptor {
+
+    /**
+     * In the form of "algorithm/mode/padding". Must be the same across broadcast and scan devices.
+     */
+    private static final String CIPHER_ALGORITHM = "AES/CTR/NoPadding";
+
+    @VisibleForTesting
+    static final String ENCRYPT_ALGORITHM = KeyProperties.KEY_ALGORITHM_AES;
+
+    /** Length of encryption key required by AES/GCM encryption. */
+    private static final int ENCRYPTION_KEY_SIZE = 32;
+
+    /** Length of salt required by AES/GCM encryption. */
+    private static final int AES_CTR_IV_SIZE = 16;
+
+    /** Length HMAC tag */
+    public static final int HMAC_TAG_SIZE = 16;
+
+    // 3 16 byte arrays known by both the encryptor and decryptor.
+    private static final byte[] AK_IV =
+            new byte[] {12, -59, 19, 23, 96, 57, -59, 19, 117, -31, -116, -61, 86, -25, -33, -78};
+    private static final byte[] ASALT_IV =
+            new byte[] {111, 48, -83, -79, -10, -102, -16, 73, 43, 55, 102, -127, 58, -19, -113, 4};
+    private static final byte[] HK_IV =
+            new byte[] {12, -59, 19, 23, 96, 57, -59, 19, 117, -31, -116, -61, 86, -25, -33, -78};
+
+    // Lazily instantiated when {@link #getInstance()} is called.
+    @Nullable private static CryptorImpV1 sCryptor;
+
+    /** Returns an instance of CryptorImpV1. */
+    public static CryptorImpV1 getInstance() {
+        if (sCryptor == null) {
+            sCryptor = new CryptorImpV1();
+        }
+        return sCryptor;
+    }
+
+    private CryptorImpV1() {
+    }
+
+    @Nullable
+    @Override
+    public byte[] encrypt(byte[] data, byte[] salt, byte[] authenticityKey) {
+        if (authenticityKey.length != AUTHENTICITY_KEY_BYTE_SIZE) {
+            Log.w(TAG, "Illegal authenticity key size");
+            return null;
+        }
+
+        // Generates a 32 bytes encryption key from authenticity_key
+        byte[] encryptionKey = Cryptor.computeHkdf(authenticityKey, AK_IV, ENCRYPTION_KEY_SIZE);
+        if (encryptionKey == null) {
+            Log.e(TAG, "Failed to generate encryption key.");
+            return null;
+        }
+
+        // Encrypts the data using the encryption key
+        SecretKey secretKey = new SecretKeySpec(encryptionKey, ENCRYPT_ALGORITHM);
+        Cipher cipher;
+        try {
+            cipher = Cipher.getInstance(CIPHER_ALGORITHM);
+        } catch (NoSuchAlgorithmException | NoSuchPaddingException e) {
+            Log.e(TAG, "Failed to encrypt with secret key.", e);
+            return null;
+        }
+        byte[] asalt = Cryptor.computeHkdf(salt, ASALT_IV, AES_CTR_IV_SIZE);
+        if (asalt == null) {
+            Log.e(TAG, "Failed to generate salt.");
+            return null;
+        }
+        try {
+            cipher.init(Cipher.ENCRYPT_MODE, secretKey, new IvParameterSpec(asalt));
+        } catch (InvalidKeyException | InvalidAlgorithmParameterException e) {
+            Log.e(TAG, "Failed to initialize cipher.", e);
+            return null;
+        }
+        try {
+            return cipher.doFinal(data);
+        } catch (IllegalBlockSizeException | BadPaddingException e) {
+            Log.e(TAG, "Failed to encrypt with secret key.", e);
+            return null;
+        }
+    }
+
+    @Nullable
+    @Override
+    public byte[] decrypt(byte[] encryptedData, byte[] salt, byte[] authenticityKey) {
+        if (authenticityKey.length != AUTHENTICITY_KEY_BYTE_SIZE) {
+            Log.w(TAG, "Illegal authenticity key size");
+            return null;
+        }
+
+        // Generates a 32 bytes encryption key from authenticity_key
+        byte[] encryptionKey = Cryptor.computeHkdf(authenticityKey, AK_IV, ENCRYPTION_KEY_SIZE);
+        if (encryptionKey == null) {
+            Log.e(TAG, "Failed to generate encryption key.");
+            return null;
+        }
+
+        // Decrypts the data using the encryption key
+        SecretKey secretKey = new SecretKeySpec(encryptionKey, ENCRYPT_ALGORITHM);
+        Cipher cipher;
+        try {
+            cipher = Cipher.getInstance(CIPHER_ALGORITHM);
+        } catch (NoSuchAlgorithmException | NoSuchPaddingException e) {
+            Log.e(TAG, "Failed to get cipher instance.", e);
+            return null;
+        }
+        byte[] asalt = Cryptor.computeHkdf(salt, ASALT_IV, AES_CTR_IV_SIZE);
+        if (asalt == null) {
+            return null;
+        }
+        try {
+            cipher.init(Cipher.DECRYPT_MODE, secretKey, new IvParameterSpec(asalt));
+        } catch (InvalidKeyException | InvalidAlgorithmParameterException e) {
+            Log.e(TAG, "Failed to initialize cipher.", e);
+            return null;
+        }
+
+        try {
+            return cipher.doFinal(encryptedData);
+        } catch (IllegalBlockSizeException | BadPaddingException e) {
+            Log.e(TAG, "Failed to decrypt bytes with secret key.", e);
+            return null;
+        }
+    }
+
+    @Override
+    @Nullable
+    public byte[] sign(byte[] data, byte[] key) {
+        return generateHmacTag(data, key);
+    }
+
+    @Override
+    public int getSignatureLength() {
+        return HMAC_TAG_SIZE;
+    }
+
+    @Override
+    public boolean verify(byte[] data, byte[] key, byte[] signature) {
+        return Arrays.equals(sign(data, key), signature);
+    }
+
+    /** Generates a 16 bytes HMAC tag. This is used for decryptor to verify if the computed HMAC tag
+     * is equal to HMAC tag in advertisement to see data integrity. */
+    @Nullable
+    @VisibleForTesting
+    byte[] generateHmacTag(byte[] data, byte[] authenticityKey) {
+        if (data == null || authenticityKey == null) {
+            Log.e(TAG, "Not generate HMAC tag because of invalid data input.");
+            return null;
+        }
+
+        if (authenticityKey.length != AUTHENTICITY_KEY_BYTE_SIZE) {
+            Log.e(TAG, "Illegal authenticity key size");
+            return null;
+        }
+
+        // Generates a 32 bytes HMAC key from authenticity_key
+        byte[] hmacKey = Cryptor.computeHkdf(authenticityKey, HK_IV, AES_CTR_IV_SIZE);
+        if (hmacKey == null) {
+            Log.e(TAG, "Failed to generate HMAC key.");
+            return null;
+        }
+
+        // Generates a 16 bytes HMAC tag from authenticity_key
+        return Cryptor.computeHkdf(data, hmacKey, HMAC_TAG_SIZE);
+    }
+}
diff --git a/nearby/service/proto/src/presence/blefilter.proto b/nearby/service/proto/src/presence/blefilter.proto
index 9f75d34..6e1ba6d 100644
--- a/nearby/service/proto/src/presence/blefilter.proto
+++ b/nearby/service/proto/src/presence/blefilter.proto
@@ -47,6 +47,7 @@
   optional bytes metadata_encryption_key_tag = 2;
 }
 
+// Public credential returned in BleFilterResult.
 message PublicCredential {
   optional bytes secret_id = 1;
   optional bytes authenticity_key = 2;
@@ -55,6 +56,20 @@
   optional bytes encrypted_metadata_tag = 5;
 }
 
+message DataElement {
+  enum ElementType {
+    DE_NONE = 0;
+    DE_FAST_PAIR_ACCOUNT_KEY = 9;
+    DE_CONNECTION_STATUS = 10;
+    DE_BATTERY_STATUS = 11;
+  }
+
+  optional ElementType key = 1;
+  optional bytes value = 2;
+  optional uint32 value_length = 3;
+}
+
+// A single filter used to filter BLE events.
 message BleFilter {
   optional uint32 id = 1;  // Required, unique id of this filter.
   // Maximum delay to notify the client after an event occurs.
@@ -71,7 +86,9 @@
   // the period of latency defined above.
   optional float distance_m = 7;
   // Used to verify the list of trusted devices.
-  repeated PublicateCertificate certficate = 8;
+  repeated PublicateCertificate certificate = 8;
+  // Data Elements for extended properties.
+  repeated DataElement data_element = 9;
 }
 
 message BleFilters {
@@ -80,14 +97,33 @@
 
 // FilterResult is returned to host when a BLE event matches a Filter.
 message BleFilterResult {
+  enum ResultType {
+    RESULT_NONE = 0;
+    RESULT_PRESENCE = 1;
+    RESULT_FAST_PAIR = 2;
+  }
+
   optional uint32 id = 1;  // id of the matched Filter.
-  optional uint32 tx_power = 2;
-  optional uint32 rssi = 3;
+  optional int32 tx_power = 2;
+  optional int32 rssi = 3;
   optional uint32 intent = 4;
   optional bytes bluetooth_address = 5;
   optional PublicCredential public_credential = 6;
+  repeated DataElement data_element = 7;
+  optional bytes ble_service_data = 8;
+  optional ResultType result_type = 9;
 }
 
 message BleFilterResults {
   repeated BleFilterResult result = 1;
 }
+
+message BleConfig {
+  // True to start BLE scan. Otherwise, stop BLE scan.
+  optional bool start_scan = 1;
+  // True when screen is turned on. Otherwise, set to false when screen is
+  // turned off.
+  optional bool screen_on = 2;
+  // Fast Pair cache expires after this time period.
+  optional uint64 fast_pair_cache_expire_time_sec = 3;
+}
diff --git a/nearby/tests/cts/fastpair/src/android/nearby/cts/CredentialElementTest.java b/nearby/tests/cts/fastpair/src/android/nearby/cts/CredentialElementTest.java
index aacb6d8..a2da967 100644
--- a/nearby/tests/cts/fastpair/src/android/nearby/cts/CredentialElementTest.java
+++ b/nearby/tests/cts/fastpair/src/android/nearby/cts/CredentialElementTest.java
@@ -42,7 +42,6 @@
     @SdkSuppress(minSdkVersion = 32, codeName = "T")
     public void testBuilder() {
         CredentialElement element = new CredentialElement(KEY, VALUE);
-
         assertThat(element.getKey()).isEqualTo(KEY);
         assertThat(Arrays.equals(element.getValue(), VALUE)).isTrue();
     }
@@ -58,9 +57,31 @@
         CredentialElement elementFromParcel = element.CREATOR.createFromParcel(
                 parcel);
         parcel.recycle();
-
         assertThat(elementFromParcel.getKey()).isEqualTo(KEY);
         assertThat(Arrays.equals(elementFromParcel.getValue(), VALUE)).isTrue();
     }
 
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void describeContents() {
+        CredentialElement element = new CredentialElement(KEY, VALUE);
+        assertThat(element.describeContents()).isEqualTo(0);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testEqual() {
+        CredentialElement element1 = new CredentialElement(KEY, VALUE);
+        CredentialElement element2 = new CredentialElement(KEY, VALUE);
+        assertThat(element1.equals(element2)).isTrue();
+        assertThat(element1.hashCode()).isEqualTo(element2.hashCode());
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testCreatorNewArray() {
+        CredentialElement [] elements =
+                CredentialElement.CREATOR.newArray(2);
+        assertThat(elements.length).isEqualTo(2);
+    }
 }
diff --git a/nearby/tests/cts/fastpair/src/android/nearby/cts/DataElementTest.java b/nearby/tests/cts/fastpair/src/android/nearby/cts/DataElementTest.java
index 3654d0d..84814ae 100644
--- a/nearby/tests/cts/fastpair/src/android/nearby/cts/DataElementTest.java
+++ b/nearby/tests/cts/fastpair/src/android/nearby/cts/DataElementTest.java
@@ -16,6 +16,13 @@
 
 package android.nearby.cts;
 
+import static android.nearby.DataElement.DataType.PRIVATE_IDENTITY;
+import static android.nearby.DataElement.DataType.PROVISIONED_IDENTITY;
+import static android.nearby.DataElement.DataType.PUBLIC_IDENTITY;
+import static android.nearby.DataElement.DataType.SALT;
+import static android.nearby.DataElement.DataType.TRUSTED_IDENTITY;
+import static android.nearby.DataElement.DataType.TX_POWER;
+
 import static com.google.common.truth.Truth.assertThat;
 
 import android.nearby.DataElement;
@@ -31,7 +38,6 @@
 
 import java.util.Arrays;
 
-
 @RunWith(AndroidJUnit4.class)
 @RequiresApi(Build.VERSION_CODES.TIRAMISU)
 public class DataElementTest {
@@ -63,4 +69,59 @@
         assertThat(elementFromParcel.getKey()).isEqualTo(KEY);
         assertThat(Arrays.equals(elementFromParcel.getValue(), VALUE)).isTrue();
     }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void describeContents() {
+        DataElement dataElement = new DataElement(KEY, VALUE);
+        assertThat(dataElement.describeContents()).isEqualTo(0);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testCreatorNewArray() {
+        DataElement[] elements =
+                DataElement.CREATOR.newArray(2);
+        assertThat(elements.length).isEqualTo(2);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testEquals() {
+        DataElement dataElement = new DataElement(KEY, VALUE);
+        DataElement dataElement2 = new DataElement(KEY, VALUE);
+
+        assertThat(dataElement.equals(dataElement2)).isTrue();
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testIsIdentity() {
+        DataElement privateIdentity = new DataElement(PRIVATE_IDENTITY, new byte[]{1, 2, 3});
+        DataElement trustedIdentity = new DataElement(TRUSTED_IDENTITY, new byte[]{1, 2, 3});
+        DataElement publicIdentity = new DataElement(PUBLIC_IDENTITY, new byte[]{1, 2, 3});
+        DataElement provisionedIdentity =
+                new DataElement(PROVISIONED_IDENTITY, new byte[]{1, 2, 3});
+
+        DataElement salt = new DataElement(SALT, new byte[]{1, 2, 3});
+        DataElement txPower = new DataElement(TX_POWER, new byte[]{1, 2, 3});
+
+        assertThat(privateIdentity.isIdentityDataType()).isTrue();
+        assertThat(trustedIdentity.isIdentityDataType()).isTrue();
+        assertThat(publicIdentity.isIdentityDataType()).isTrue();
+        assertThat(provisionedIdentity.isIdentityDataType()).isTrue();
+        assertThat(salt.isIdentityDataType()).isFalse();
+        assertThat(txPower.isIdentityDataType()).isFalse();
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void test_notEquals() {
+        DataElement dataElement = new DataElement(KEY, VALUE);
+        DataElement dataElement2 = new DataElement(KEY, new byte[]{1, 2, 1, 1});
+        DataElement dataElement3 = new DataElement(6, VALUE);
+
+        assertThat(dataElement.equals(dataElement2)).isFalse();
+        assertThat(dataElement.equals(dataElement3)).isFalse();
+    }
 }
diff --git a/nearby/tests/cts/fastpair/src/android/nearby/cts/NearbyDeviceParcelableTest.java b/nearby/tests/cts/fastpair/src/android/nearby/cts/NearbyDeviceParcelableTest.java
index 654b852..2907e56 100644
--- a/nearby/tests/cts/fastpair/src/android/nearby/cts/NearbyDeviceParcelableTest.java
+++ b/nearby/tests/cts/fastpair/src/android/nearby/cts/NearbyDeviceParcelableTest.java
@@ -22,6 +22,7 @@
 
 import android.nearby.NearbyDevice;
 import android.nearby.NearbyDeviceParcelable;
+import android.nearby.PublicCredential;
 import android.os.Build;
 import android.os.Parcel;
 
@@ -41,8 +42,11 @@
 
     private static final String BLUETOOTH_ADDRESS = "00:11:22:33:FF:EE";
     private static final byte[] SCAN_DATA = new byte[] {1, 2, 3, 4};
+    private static final byte[] SALT = new byte[] {1, 2, 3, 4};
     private static final String FAST_PAIR_MODEL_ID = "1234";
     private static final int RSSI = -60;
+    private static final int TX_POWER = -10;
+    private static final int ACTION = 1;
 
     private NearbyDeviceParcelable.Builder mBuilder;
 
@@ -61,20 +65,36 @@
 
     @Test
     @SdkSuppress(minSdkVersion = 33, codeName = "T")
-    public void test_defaultNullFields() {
+    public void testNullFields() {
+        PublicCredential publicCredential =
+                new PublicCredential.Builder(
+                        new byte[] {1},
+                        new byte[] {2},
+                        new byte[] {3},
+                        new byte[] {4},
+                        new byte[] {5})
+                        .build();
         NearbyDeviceParcelable nearbyDeviceParcelable =
                 new NearbyDeviceParcelable.Builder()
                         .setMedium(NearbyDevice.Medium.BLE)
+                        .setPublicCredential(publicCredential)
+                        .setAction(ACTION)
                         .setRssi(RSSI)
+                        .setScanType(SCAN_TYPE_NEARBY_PRESENCE)
+                        .setTxPower(TX_POWER)
+                        .setSalt(SALT)
                         .build();
 
         assertThat(nearbyDeviceParcelable.getName()).isNull();
         assertThat(nearbyDeviceParcelable.getFastPairModelId()).isNull();
         assertThat(nearbyDeviceParcelable.getBluetoothAddress()).isNull();
         assertThat(nearbyDeviceParcelable.getData()).isNull();
-
         assertThat(nearbyDeviceParcelable.getMedium()).isEqualTo(NearbyDevice.Medium.BLE);
         assertThat(nearbyDeviceParcelable.getRssi()).isEqualTo(RSSI);
+        assertThat(nearbyDeviceParcelable.getAction()).isEqualTo(ACTION);
+        assertThat(nearbyDeviceParcelable.getPublicCredential()).isEqualTo(publicCredential);
+        assertThat(nearbyDeviceParcelable.getSalt()).isEqualTo(SALT);
+        assertThat(nearbyDeviceParcelable.getTxPower()).isEqualTo(TX_POWER);
     }
 
     @Test
@@ -114,7 +134,6 @@
     @SdkSuppress(minSdkVersion = 33, codeName = "T")
     public void testWriteParcel_nullBluetoothAddress() {
         NearbyDeviceParcelable nearbyDeviceParcelable = mBuilder.setBluetoothAddress(null).build();
-
         Parcel parcel = Parcel.obtain();
         nearbyDeviceParcelable.writeToParcel(parcel, 0);
         parcel.setDataPosition(0);
@@ -124,4 +143,36 @@
 
         assertThat(actualNearbyDevice.getBluetoothAddress()).isNull();
     }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 33, codeName = "T")
+    public void describeContents() {
+        NearbyDeviceParcelable nearbyDeviceParcelable = mBuilder.setBluetoothAddress(null).build();
+        assertThat(nearbyDeviceParcelable.describeContents()).isEqualTo(0);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 33, codeName = "T")
+    public void testEqual() {
+        PublicCredential publicCredential =
+                new PublicCredential.Builder(
+                        new byte[] {1},
+                        new byte[] {2},
+                        new byte[] {3},
+                        new byte[] {4},
+                        new byte[] {5})
+                        .build();
+        NearbyDeviceParcelable nearbyDeviceParcelable1 =
+                mBuilder.setPublicCredential(publicCredential).build();
+        NearbyDeviceParcelable nearbyDeviceParcelable2 =
+                mBuilder.setPublicCredential(publicCredential).build();
+        assertThat(nearbyDeviceParcelable1.equals(nearbyDeviceParcelable2)).isTrue();
+    }
+
+    @Test
+    public void testCreatorNewArray() {
+        NearbyDeviceParcelable[] nearbyDeviceParcelables =
+                NearbyDeviceParcelable.CREATOR.newArray(2);
+        assertThat(nearbyDeviceParcelables.length).isEqualTo(2);
+    }
 }
diff --git a/nearby/tests/cts/fastpair/src/android/nearby/cts/NearbyDeviceTest.java b/nearby/tests/cts/fastpair/src/android/nearby/cts/NearbyDeviceTest.java
index f37800a..8ca5a94 100644
--- a/nearby/tests/cts/fastpair/src/android/nearby/cts/NearbyDeviceTest.java
+++ b/nearby/tests/cts/fastpair/src/android/nearby/cts/NearbyDeviceTest.java
@@ -16,6 +16,8 @@
 
 package android.nearby.cts;
 
+import static android.nearby.NearbyDevice.Medium.BLE;
+
 import android.annotation.TargetApi;
 import android.nearby.FastPairDevice;
 import android.nearby.NearbyDevice;
@@ -34,13 +36,18 @@
 @RequiresApi(Build.VERSION_CODES.TIRAMISU)
 @TargetApi(Build.VERSION_CODES.TIRAMISU)
 public class NearbyDeviceTest {
+    private static final String NAME = "NearbyDevice";
+    private static final String MODEL_ID = "112233";
+    private static final int TX_POWER = -10;
+    private static final int RSSI = -60;
+    private static final String BLUETOOTH_ADDRESS = "00:11:22:33:FF:EE";
+    private static final byte[] SCAN_DATA = new byte[] {1, 2, 3, 4};
 
     @Test
     @SdkSuppress(minSdkVersion = 32, codeName = "T")
     public void test_isValidMedium() {
         assertThat(NearbyDevice.isValidMedium(1)).isTrue();
         assertThat(NearbyDevice.isValidMedium(2)).isTrue();
-
         assertThat(NearbyDevice.isValidMedium(0)).isFalse();
         assertThat(NearbyDevice.isValidMedium(3)).isFalse();
     }
@@ -49,11 +56,55 @@
     @SdkSuppress(minSdkVersion = 32, codeName = "T")
     public void test_getMedium_fromChild() {
         FastPairDevice fastPairDevice = new FastPairDevice.Builder()
-                .addMedium(NearbyDevice.Medium.BLE)
-                .setRssi(-60)
+                .addMedium(BLE)
+                .setRssi(RSSI)
                 .build();
 
         assertThat(fastPairDevice.getMediums()).contains(1);
-        assertThat(fastPairDevice.getRssi()).isEqualTo(-60);
+        assertThat(fastPairDevice.getRssi()).isEqualTo(RSSI);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testEqual() {
+        FastPairDevice fastPairDevice1 = new FastPairDevice.Builder()
+                .setModelId(MODEL_ID)
+                .setTxPower(TX_POWER)
+                .setBluetoothAddress(BLUETOOTH_ADDRESS)
+                .setData(SCAN_DATA)
+                .setRssi(RSSI)
+                .addMedium(BLE)
+                .setName(NAME)
+                .build();
+        FastPairDevice fastPairDevice2 = new FastPairDevice.Builder()
+                .setModelId(MODEL_ID)
+                .setTxPower(TX_POWER)
+                .setBluetoothAddress(BLUETOOTH_ADDRESS)
+                .setData(SCAN_DATA)
+                .setRssi(RSSI)
+                .addMedium(BLE)
+                .setName(NAME)
+                .build();
+
+        assertThat(fastPairDevice1.equals(fastPairDevice1)).isTrue();
+        assertThat(fastPairDevice1.equals(fastPairDevice2)).isTrue();
+        assertThat(fastPairDevice1.equals(null)).isFalse();
+        assertThat(fastPairDevice1.hashCode()).isEqualTo(fastPairDevice2.hashCode());
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testToString() {
+        FastPairDevice fastPairDevice1 = new FastPairDevice.Builder()
+                .addMedium(BLE)
+                .setRssi(RSSI)
+                .setModelId(MODEL_ID)
+                .setTxPower(TX_POWER)
+                .setBluetoothAddress(BLUETOOTH_ADDRESS)
+                .build();
+
+        assertThat(fastPairDevice1.toString())
+                .isEqualTo("FastPairDevice [medium={BLE} rssi=-60 "
+                        + "txPower=-10 modelId=112233 bluetoothAddress=00:11:22:33:FF:EE]");
     }
 }
diff --git a/nearby/tests/cts/fastpair/src/android/nearby/cts/NearbyManagerTest.java b/nearby/tests/cts/fastpair/src/android/nearby/cts/NearbyManagerTest.java
index 7696a61..462d05a 100644
--- a/nearby/tests/cts/fastpair/src/android/nearby/cts/NearbyManagerTest.java
+++ b/nearby/tests/cts/fastpair/src/android/nearby/cts/NearbyManagerTest.java
@@ -158,6 +158,15 @@
         mNearbyManager.stopBroadcast(callback);
     }
 
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void setFastPairScanEnabled() {
+        mNearbyManager.setFastPairScanEnabled(mContext, true);
+        assertThat(mNearbyManager.getFastPairScanEnabled(mContext)).isTrue();
+        mNearbyManager.setFastPairScanEnabled(mContext, false);
+        assertThat(mNearbyManager.getFastPairScanEnabled(mContext)).isFalse();
+    }
+
     private void enableBluetooth() {
         BluetoothManager manager = mContext.getSystemService(BluetoothManager.class);
         BluetoothAdapter bluetoothAdapter = manager.getAdapter();
diff --git a/nearby/tests/cts/fastpair/src/android/nearby/cts/PresenceBroadcastRequestTest.java b/nearby/tests/cts/fastpair/src/android/nearby/cts/PresenceBroadcastRequestTest.java
index eaa5ca1..71be889 100644
--- a/nearby/tests/cts/fastpair/src/android/nearby/cts/PresenceBroadcastRequestTest.java
+++ b/nearby/tests/cts/fastpair/src/android/nearby/cts/PresenceBroadcastRequestTest.java
@@ -114,4 +114,18 @@
         assertThat(parcelRequest.getType()).isEqualTo(BROADCAST_TYPE_NEARBY_PRESENCE);
 
     }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void describeContents() {
+        PresenceBroadcastRequest broadcastRequest = mBuilder.build();
+        assertThat(broadcastRequest.describeContents()).isEqualTo(0);
+    }
+
+    @Test
+    public void testCreatorNewArray() {
+        PresenceBroadcastRequest[] presenceBroadcastRequests =
+                PresenceBroadcastRequest.CREATOR.newArray(2);
+        assertThat(presenceBroadcastRequests.length).isEqualTo(2);
+    }
 }
diff --git a/nearby/tests/cts/fastpair/src/android/nearby/cts/PresenceDeviceTest.java b/nearby/tests/cts/fastpair/src/android/nearby/cts/PresenceDeviceTest.java
index 94f8fe7..ea1de6b 100644
--- a/nearby/tests/cts/fastpair/src/android/nearby/cts/PresenceDeviceTest.java
+++ b/nearby/tests/cts/fastpair/src/android/nearby/cts/PresenceDeviceTest.java
@@ -104,4 +104,24 @@
         assertThat(parcelDevice.getMediums()).containsExactly(MEDIUM);
         assertThat(parcelDevice.getName()).isEqualTo(DEVICE_NAME);
     }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void describeContents() {
+        PresenceDevice device =
+                new PresenceDevice.Builder(DEVICE_ID, SALT, SECRET_ID, ENCRYPTED_IDENTITY)
+                        .addExtendedProperty(new DataElement(KEY, VALUE))
+                        .setRssi(RSSI)
+                        .addMedium(MEDIUM)
+                        .setName(DEVICE_NAME)
+                        .build();
+        assertThat(device.describeContents()).isEqualTo(0);
+    }
+
+    @Test
+    public void testCreatorNewArray() {
+        PresenceDevice[] devices =
+                PresenceDevice.CREATOR.newArray(2);
+        assertThat(devices.length).isEqualTo(2);
+    }
 }
diff --git a/nearby/tests/cts/fastpair/src/android/nearby/cts/PresenceScanFilterTest.java b/nearby/tests/cts/fastpair/src/android/nearby/cts/PresenceScanFilterTest.java
index cecdfd2..77e7dc5 100644
--- a/nearby/tests/cts/fastpair/src/android/nearby/cts/PresenceScanFilterTest.java
+++ b/nearby/tests/cts/fastpair/src/android/nearby/cts/PresenceScanFilterTest.java
@@ -90,5 +90,21 @@
         assertThat(parcelFilter.getType()).isEqualTo(ScanRequest.SCAN_TYPE_NEARBY_PRESENCE);
         assertThat(parcelFilter.getMaxPathLoss()).isEqualTo(RSSI);
         assertThat(parcelFilter.getPresenceActions()).containsExactly(ACTION);
+        assertThat(parcelFilter.getExtendedProperties().get(0).getKey()).isEqualTo(KEY);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void describeContents() {
+        PresenceScanFilter filter = mBuilder.build();
+        assertThat(filter.describeContents()).isEqualTo(0);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testCreatorNewArray() {
+        PresenceScanFilter[] filters =
+                PresenceScanFilter.CREATOR.newArray(2);
+        assertThat(filters.length).isEqualTo(2);
     }
 }
diff --git a/nearby/tests/cts/fastpair/src/android/nearby/cts/PrivateCredentialTest.java b/nearby/tests/cts/fastpair/src/android/nearby/cts/PrivateCredentialTest.java
index f05f65f..fa8c954 100644
--- a/nearby/tests/cts/fastpair/src/android/nearby/cts/PrivateCredentialTest.java
+++ b/nearby/tests/cts/fastpair/src/android/nearby/cts/PrivateCredentialTest.java
@@ -99,4 +99,19 @@
         assertThat(credentialElement.getKey()).isEqualTo(KEY);
         assertThat(Arrays.equals(credentialElement.getValue(), VALUE)).isTrue();
     }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 33, codeName = "T")
+    public void describeContents() {
+        PrivateCredential credential = mBuilder.build();
+        assertThat(credential.describeContents()).isEqualTo(0);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 33, codeName = "T")
+    public void testCreatorNewArray() {
+        PrivateCredential[]  credentials =
+                PrivateCredential.CREATOR.newArray(2);
+        assertThat(credentials.length).isEqualTo(2);
+    }
 }
diff --git a/nearby/tests/cts/fastpair/src/android/nearby/cts/PublicCredentialTest.java b/nearby/tests/cts/fastpair/src/android/nearby/cts/PublicCredentialTest.java
index 11bbacc..774e897 100644
--- a/nearby/tests/cts/fastpair/src/android/nearby/cts/PublicCredentialTest.java
+++ b/nearby/tests/cts/fastpair/src/android/nearby/cts/PublicCredentialTest.java
@@ -135,6 +135,7 @@
                         .setIdentityType(IDENTITY_TYPE_PRIVATE)
                         .build();
         assertThat(credentialOne.equals((Object) credentialTwo)).isTrue();
+        assertThat(credentialOne.equals(null)).isFalse();
     }
 
     @Test
@@ -161,4 +162,19 @@
                         .build();
         assertThat(credentialOne.equals((Object) credentialTwo)).isFalse();
     }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void describeContents() {
+        PublicCredential credential = mBuilder.build();
+        assertThat(credential.describeContents()).isEqualTo(0);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testCreatorNewArray() {
+        PublicCredential[] credentials  =
+        PublicCredential.CREATOR.newArray(2);
+        assertThat(credentials.length).isEqualTo(2);
+    }
 }
diff --git a/nearby/tests/cts/fastpair/src/android/nearby/cts/ScanRequestTest.java b/nearby/tests/cts/fastpair/src/android/nearby/cts/ScanRequestTest.java
index 21f3d28..de4b1c3 100644
--- a/nearby/tests/cts/fastpair/src/android/nearby/cts/ScanRequestTest.java
+++ b/nearby/tests/cts/fastpair/src/android/nearby/cts/ScanRequestTest.java
@@ -171,6 +171,23 @@
         assertThat(request.getScanFilters().get(0).getMaxPathLoss()).isEqualTo(RSSI);
     }
 
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void describeContents() {
+        ScanRequest request = new ScanRequest.Builder()
+                .setScanType(SCAN_TYPE_FAST_PAIR)
+                .build();
+        assertThat(request.describeContents()).isEqualTo(0);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testCreatorNewArray() {
+        ScanRequest[] requests =
+                ScanRequest.CREATOR.newArray(2);
+        assertThat(requests.length).isEqualTo(2);
+    }
+
     private static PresenceScanFilter getPresenceScanFilter() {
         final byte[] secretId = new byte[]{1, 2, 3, 4};
         final byte[] authenticityKey = new byte[]{0, 1, 1, 1};
diff --git a/nearby/tests/unit/AndroidManifest.xml b/nearby/tests/unit/AndroidManifest.xml
index 9f58baf..7dcb263 100644
--- a/nearby/tests/unit/AndroidManifest.xml
+++ b/nearby/tests/unit/AndroidManifest.xml
@@ -23,6 +23,7 @@
     <uses-permission android:name="android.permission.BLUETOOTH" />
     <uses-permission android:name="android.permission.BLUETOOTH_SCAN" />
     <uses-permission android:name="android.permission.BLUETOOTH_ADVERTISE" />
+    <uses-permission android:name="android.permission.BLUETOOTH_CONNECT" />
 
     <application android:debuggable="true">
         <uses-library android:name="android.test.runner" />
diff --git a/nearby/tests/unit/src/android/nearby/FastPairAntispoofKeyDeviceMetadataTest.java b/nearby/tests/unit/src/android/nearby/FastPairAntispoofKeyDeviceMetadataTest.java
new file mode 100644
index 0000000..d095529
--- /dev/null
+++ b/nearby/tests/unit/src/android/nearby/FastPairAntispoofKeyDeviceMetadataTest.java
@@ -0,0 +1,177 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.nearby;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+import androidx.test.filters.SdkSuppress;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+@RunWith(AndroidJUnit4.class)
+public class FastPairAntispoofKeyDeviceMetadataTest {
+
+    private static final int BLE_TX_POWER  = 5;
+    private static final String CONNECT_SUCCESS_COMPANION_APP_INSTALLED =
+            "CONNECT_SUCCESS_COMPANION_APP_INSTALLED";
+    private static final String CONNECT_SUCCESS_COMPANION_APP_NOT_INSTALLED =
+            "CONNECT_SUCCESS_COMPANION_APP_NOT_INSTALLED";
+    private static final float DELTA = 0.001f;
+    private static final int DEVICE_TYPE = 7;
+    private static final String DOWNLOAD_COMPANION_APP_DESCRIPTION =
+            "DOWNLOAD_COMPANION_APP_DESCRIPTION";
+    private static final String FAIL_CONNECT_GOTO_SETTINGS_DESCRIPTION =
+            "FAIL_CONNECT_GOTO_SETTINGS_DESCRIPTION";
+    private static final byte[] IMAGE = new byte[] {7, 9};
+    private static final String IMAGE_URL = "IMAGE_URL";
+    private static final String INITIAL_NOTIFICATION_DESCRIPTION =
+            "INITIAL_NOTIFICATION_DESCRIPTION";
+    private static final String INITIAL_NOTIFICATION_DESCRIPTION_NO_ACCOUNT =
+            "INITIAL_NOTIFICATION_DESCRIPTION_NO_ACCOUNT";
+    private static final String INITIAL_PAIRING_DESCRIPTION = "INITIAL_PAIRING_DESCRIPTION";
+    private static final String INTENT_URI = "INTENT_URI";
+    private static final String OPEN_COMPANION_APP_DESCRIPTION = "OPEN_COMPANION_APP_DESCRIPTION";
+    private static final String RETRO_ACTIVE_PAIRING_DESCRIPTION =
+            "RETRO_ACTIVE_PAIRING_DESCRIPTION";
+    private static final String SUBSEQUENT_PAIRING_DESCRIPTION = "SUBSEQUENT_PAIRING_DESCRIPTION";
+    private static final float TRIGGER_DISTANCE = 111;
+    private static final String TRUE_WIRELESS_IMAGE_URL_CASE = "TRUE_WIRELESS_IMAGE_URL_CASE";
+    private static final String TRUE_WIRELESS_IMAGE_URL_LEFT_BUD =
+            "TRUE_WIRELESS_IMAGE_URL_LEFT_BUD";
+    private static final String TRUE_WIRELESS_IMAGE_URL_RIGHT_BUD =
+            "TRUE_WIRELESS_IMAGE_URL_RIGHT_BUD";
+    private static final String UNABLE_TO_CONNECT_DESCRIPTION = "UNABLE_TO_CONNECT_DESCRIPTION";
+    private static final String UNABLE_TO_CONNECT_TITLE = "UNABLE_TO_CONNECT_TITLE";
+    private static final String UPDATE_COMPANION_APP_DESCRIPTION =
+            "UPDATE_COMPANION_APP_DESCRIPTION";
+    private static final String WAIT_LAUNCH_COMPANION_APP_DESCRIPTION =
+            "WAIT_LAUNCH_COMPANION_APP_DESCRIPTION";
+    private static final byte[] ANTI_SPOOFING_KEY = new byte[] {4, 5, 6};
+    private static final String NAME = "NAME";
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testSetGetFastPairAntispoofKeyDeviceMetadataNotNull() {
+        FastPairDeviceMetadata fastPairDeviceMetadata = genFastPairDeviceMetadata();
+        FastPairAntispoofKeyDeviceMetadata fastPairAntispoofKeyDeviceMetadata =
+                genFastPairAntispoofKeyDeviceMetadata(ANTI_SPOOFING_KEY, fastPairDeviceMetadata);
+
+        assertThat(fastPairAntispoofKeyDeviceMetadata.getAntispoofPublicKey()).isEqualTo(
+                ANTI_SPOOFING_KEY);
+        ensureFastPairDeviceMetadataAsExpected(
+                fastPairAntispoofKeyDeviceMetadata.getFastPairDeviceMetadata());
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testSetGetFastPairAntispoofKeyDeviceMetadataNull() {
+        FastPairAntispoofKeyDeviceMetadata fastPairAntispoofKeyDeviceMetadata =
+                genFastPairAntispoofKeyDeviceMetadata(null, null);
+        assertThat(fastPairAntispoofKeyDeviceMetadata.getAntispoofPublicKey()).isEqualTo(
+                null);
+        assertThat(fastPairAntispoofKeyDeviceMetadata.getFastPairDeviceMetadata()).isEqualTo(
+                null);
+    }
+
+    /* Verifies DeviceMetadata. */
+    private static void ensureFastPairDeviceMetadataAsExpected(FastPairDeviceMetadata metadata) {
+        assertThat(metadata.getBleTxPower()).isEqualTo(BLE_TX_POWER);
+        assertThat(metadata.getConnectSuccessCompanionAppInstalled())
+                .isEqualTo(CONNECT_SUCCESS_COMPANION_APP_INSTALLED);
+        assertThat(metadata.getConnectSuccessCompanionAppNotInstalled())
+                .isEqualTo(CONNECT_SUCCESS_COMPANION_APP_NOT_INSTALLED);
+        assertThat(metadata.getDeviceType()).isEqualTo(DEVICE_TYPE);
+        assertThat(metadata.getDownloadCompanionAppDescription())
+                .isEqualTo(DOWNLOAD_COMPANION_APP_DESCRIPTION);
+        assertThat(metadata.getFailConnectGoToSettingsDescription())
+                .isEqualTo(FAIL_CONNECT_GOTO_SETTINGS_DESCRIPTION);
+        assertThat(metadata.getImage()).isEqualTo(IMAGE);
+        assertThat(metadata.getImageUrl()).isEqualTo(IMAGE_URL);
+        assertThat(metadata.getInitialNotificationDescription())
+                .isEqualTo(INITIAL_NOTIFICATION_DESCRIPTION);
+        assertThat(metadata.getInitialNotificationDescriptionNoAccount())
+                .isEqualTo(INITIAL_NOTIFICATION_DESCRIPTION_NO_ACCOUNT);
+        assertThat(metadata.getInitialPairingDescription()).isEqualTo(INITIAL_PAIRING_DESCRIPTION);
+        assertThat(metadata.getIntentUri()).isEqualTo(INTENT_URI);
+        assertThat(metadata.getName()).isEqualTo(NAME);
+        assertThat(metadata.getOpenCompanionAppDescription())
+                .isEqualTo(OPEN_COMPANION_APP_DESCRIPTION);
+        assertThat(metadata.getRetroactivePairingDescription())
+                .isEqualTo(RETRO_ACTIVE_PAIRING_DESCRIPTION);
+        assertThat(metadata.getSubsequentPairingDescription())
+                .isEqualTo(SUBSEQUENT_PAIRING_DESCRIPTION);
+        assertThat(metadata.getTriggerDistance()).isWithin(DELTA).of(TRIGGER_DISTANCE);
+        assertThat(metadata.getTrueWirelessImageUrlCase()).isEqualTo(TRUE_WIRELESS_IMAGE_URL_CASE);
+        assertThat(metadata.getTrueWirelessImageUrlLeftBud())
+                .isEqualTo(TRUE_WIRELESS_IMAGE_URL_LEFT_BUD);
+        assertThat(metadata.getTrueWirelessImageUrlRightBud())
+                .isEqualTo(TRUE_WIRELESS_IMAGE_URL_RIGHT_BUD);
+        assertThat(metadata.getUnableToConnectDescription())
+                .isEqualTo(UNABLE_TO_CONNECT_DESCRIPTION);
+        assertThat(metadata.getUnableToConnectTitle()).isEqualTo(UNABLE_TO_CONNECT_TITLE);
+        assertThat(metadata.getUpdateCompanionAppDescription())
+                .isEqualTo(UPDATE_COMPANION_APP_DESCRIPTION);
+        assertThat(metadata.getWaitLaunchCompanionAppDescription())
+                .isEqualTo(WAIT_LAUNCH_COMPANION_APP_DESCRIPTION);
+    }
+
+    /* Generates FastPairAntispoofKeyDeviceMetadata. */
+    private static FastPairAntispoofKeyDeviceMetadata genFastPairAntispoofKeyDeviceMetadata(
+            byte[] antispoofPublicKey, FastPairDeviceMetadata deviceMetadata) {
+        FastPairAntispoofKeyDeviceMetadata.Builder builder =
+                new FastPairAntispoofKeyDeviceMetadata.Builder();
+        builder.setAntispoofPublicKey(antispoofPublicKey);
+        builder.setFastPairDeviceMetadata(deviceMetadata);
+
+        return builder.build();
+    }
+
+    /* Generates FastPairDeviceMetadata. */
+    private static FastPairDeviceMetadata genFastPairDeviceMetadata() {
+        FastPairDeviceMetadata.Builder builder = new FastPairDeviceMetadata.Builder();
+        builder.setBleTxPower(BLE_TX_POWER);
+        builder.setConnectSuccessCompanionAppInstalled(CONNECT_SUCCESS_COMPANION_APP_INSTALLED);
+        builder.setConnectSuccessCompanionAppNotInstalled(
+                CONNECT_SUCCESS_COMPANION_APP_NOT_INSTALLED);
+        builder.setDeviceType(DEVICE_TYPE);
+        builder.setDownloadCompanionAppDescription(DOWNLOAD_COMPANION_APP_DESCRIPTION);
+        builder.setFailConnectGoToSettingsDescription(FAIL_CONNECT_GOTO_SETTINGS_DESCRIPTION);
+        builder.setImage(IMAGE);
+        builder.setImageUrl(IMAGE_URL);
+        builder.setInitialNotificationDescription(INITIAL_NOTIFICATION_DESCRIPTION);
+        builder.setInitialNotificationDescriptionNoAccount(
+                INITIAL_NOTIFICATION_DESCRIPTION_NO_ACCOUNT);
+        builder.setInitialPairingDescription(INITIAL_PAIRING_DESCRIPTION);
+        builder.setIntentUri(INTENT_URI);
+        builder.setName(NAME);
+        builder.setOpenCompanionAppDescription(OPEN_COMPANION_APP_DESCRIPTION);
+        builder.setRetroactivePairingDescription(RETRO_ACTIVE_PAIRING_DESCRIPTION);
+        builder.setSubsequentPairingDescription(SUBSEQUENT_PAIRING_DESCRIPTION);
+        builder.setTriggerDistance(TRIGGER_DISTANCE);
+        builder.setTrueWirelessImageUrlCase(TRUE_WIRELESS_IMAGE_URL_CASE);
+        builder.setTrueWirelessImageUrlLeftBud(TRUE_WIRELESS_IMAGE_URL_LEFT_BUD);
+        builder.setTrueWirelessImageUrlRightBud(TRUE_WIRELESS_IMAGE_URL_RIGHT_BUD);
+        builder.setUnableToConnectDescription(UNABLE_TO_CONNECT_DESCRIPTION);
+        builder.setUnableToConnectTitle(UNABLE_TO_CONNECT_TITLE);
+        builder.setUpdateCompanionAppDescription(UPDATE_COMPANION_APP_DESCRIPTION);
+        builder.setWaitLaunchCompanionAppDescription(WAIT_LAUNCH_COMPANION_APP_DESCRIPTION);
+
+        return builder.build();
+    }
+}
diff --git a/nearby/tests/unit/src/android/nearby/FastPairDataProviderServiceTest.java b/nearby/tests/unit/src/android/nearby/FastPairDataProviderServiceTest.java
new file mode 100644
index 0000000..b3f2442
--- /dev/null
+++ b/nearby/tests/unit/src/android/nearby/FastPairDataProviderServiceTest.java
@@ -0,0 +1,966 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.nearby;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.ArgumentMatchers.eq;
+import static org.mockito.Mockito.verify;
+import static org.mockito.MockitoAnnotations.initMocks;
+
+import android.accounts.Account;
+import android.content.Intent;
+import android.nearby.aidl.ByteArrayParcel;
+import android.nearby.aidl.FastPairAccountDevicesMetadataRequestParcel;
+import android.nearby.aidl.FastPairAccountKeyDeviceMetadataParcel;
+import android.nearby.aidl.FastPairAntispoofKeyDeviceMetadataParcel;
+import android.nearby.aidl.FastPairAntispoofKeyDeviceMetadataRequestParcel;
+import android.nearby.aidl.FastPairDeviceMetadataParcel;
+import android.nearby.aidl.FastPairDiscoveryItemParcel;
+import android.nearby.aidl.FastPairEligibleAccountParcel;
+import android.nearby.aidl.FastPairEligibleAccountsRequestParcel;
+import android.nearby.aidl.FastPairManageAccountDeviceRequestParcel;
+import android.nearby.aidl.FastPairManageAccountRequestParcel;
+import android.nearby.aidl.IFastPairAccountDevicesMetadataCallback;
+import android.nearby.aidl.IFastPairAntispoofKeyDeviceMetadataCallback;
+import android.nearby.aidl.IFastPairDataProvider;
+import android.nearby.aidl.IFastPairEligibleAccountsCallback;
+import android.nearby.aidl.IFastPairManageAccountCallback;
+import android.nearby.aidl.IFastPairManageAccountDeviceCallback;
+
+import androidx.annotation.NonNull;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+import androidx.test.filters.SdkSuppress;
+
+import com.google.common.collect.ImmutableList;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.ArgumentCaptor;
+import org.mockito.Captor;
+import org.mockito.Mock;
+
+@RunWith(AndroidJUnit4.class)
+public class FastPairDataProviderServiceTest {
+
+    private static final String TAG = "FastPairDataProviderServiceTest";
+
+    private static final int BLE_TX_POWER  = 5;
+    private static final String CONNECT_SUCCESS_COMPANION_APP_INSTALLED =
+            "CONNECT_SUCCESS_COMPANION_APP_INSTALLED";
+    private static final String CONNECT_SUCCESS_COMPANION_APP_NOT_INSTALLED =
+            "CONNECT_SUCCESS_COMPANION_APP_NOT_INSTALLED";
+    private static final float DELTA = 0.001f;
+    private static final int DEVICE_TYPE = 7;
+    private static final String DOWNLOAD_COMPANION_APP_DESCRIPTION =
+            "DOWNLOAD_COMPANION_APP_DESCRIPTION";
+    private static final Account ELIGIBLE_ACCOUNT_1 = new Account("abc@google.com", "type1");
+    private static final boolean ELIGIBLE_ACCOUNT_1_OPT_IN = true;
+    private static final Account ELIGIBLE_ACCOUNT_2 = new Account("def@gmail.com", "type2");
+    private static final boolean ELIGIBLE_ACCOUNT_2_OPT_IN = false;
+    private static final Account MANAGE_ACCOUNT = new Account("ghi@gmail.com", "type3");
+    private static final Account ACCOUNTDEVICES_METADATA_ACCOUNT =
+            new Account("jk@gmail.com", "type4");
+    private static final int NUM_ACCOUNT_DEVICES = 2;
+
+    private static final int ERROR_CODE_BAD_REQUEST =
+            FastPairDataProviderService.ERROR_CODE_BAD_REQUEST;
+    private static final int MANAGE_ACCOUNT_REQUEST_TYPE =
+            FastPairDataProviderService.MANAGE_REQUEST_ADD;
+    private static final String ERROR_STRING = "ERROR_STRING";
+    private static final String FAIL_CONNECT_GOTO_SETTINGS_DESCRIPTION =
+            "FAIL_CONNECT_GOTO_SETTINGS_DESCRIPTION";
+    private static final byte[] IMAGE = new byte[] {7, 9};
+    private static final String IMAGE_URL = "IMAGE_URL";
+    private static final String INITIAL_NOTIFICATION_DESCRIPTION =
+            "INITIAL_NOTIFICATION_DESCRIPTION";
+    private static final String INITIAL_NOTIFICATION_DESCRIPTION_NO_ACCOUNT =
+            "INITIAL_NOTIFICATION_DESCRIPTION_NO_ACCOUNT";
+    private static final String INITIAL_PAIRING_DESCRIPTION = "INITIAL_PAIRING_DESCRIPTION";
+    private static final String INTENT_URI = "INTENT_URI";
+    private static final String OPEN_COMPANION_APP_DESCRIPTION = "OPEN_COMPANION_APP_DESCRIPTION";
+    private static final String RETRO_ACTIVE_PAIRING_DESCRIPTION =
+            "RETRO_ACTIVE_PAIRING_DESCRIPTION";
+    private static final String SUBSEQUENT_PAIRING_DESCRIPTION = "SUBSEQUENT_PAIRING_DESCRIPTION";
+    private static final float TRIGGER_DISTANCE = 111;
+    private static final String TRUE_WIRELESS_IMAGE_URL_CASE = "TRUE_WIRELESS_IMAGE_URL_CASE";
+    private static final String TRUE_WIRELESS_IMAGE_URL_LEFT_BUD =
+            "TRUE_WIRELESS_IMAGE_URL_LEFT_BUD";
+    private static final String TRUE_WIRELESS_IMAGE_URL_RIGHT_BUD =
+            "TRUE_WIRELESS_IMAGE_URL_RIGHT_BUD";
+    private static final String UNABLE_TO_CONNECT_DESCRIPTION = "UNABLE_TO_CONNECT_DESCRIPTION";
+    private static final String UNABLE_TO_CONNECT_TITLE = "UNABLE_TO_CONNECT_TITLE";
+    private static final String UPDATE_COMPANION_APP_DESCRIPTION =
+            "UPDATE_COMPANION_APP_DESCRIPTION";
+    private static final String WAIT_LAUNCH_COMPANION_APP_DESCRIPTION =
+            "WAIT_LAUNCH_COMPANION_APP_DESCRIPTION";
+    private static final byte[] ACCOUNT_KEY = new byte[] {3};
+    private static final byte[] ACCOUNT_KEY_2 = new byte[] {9, 3};
+    private static final byte[] SHA256_ACCOUNT_KEY_PUBLIC_ADDRESS = new byte[] {2, 8};
+    private static final byte[] REQUEST_MODEL_ID = new byte[] {1, 2, 3};
+    private static final byte[] ANTI_SPOOFING_KEY = new byte[] {4, 5, 6};
+    private static final String ACTION_URL = "ACTION_URL";
+    private static final int ACTION_URL_TYPE = 5;
+    private static final String APP_NAME = "APP_NAME";
+    private static final byte[] AUTHENTICATION_PUBLIC_KEY_SEC_P256R1 = new byte[] {5, 7};
+    private static final String DESCRIPTION = "DESCRIPTION";
+    private static final String DEVICE_NAME = "DEVICE_NAME";
+    private static final String DISPLAY_URL = "DISPLAY_URL";
+    private static final long FIRST_OBSERVATION_TIMESTAMP_MILLIS = 8393L;
+    private static final String  ICON_FIFE_URL = "ICON_FIFE_URL";
+    private static final byte[]  ICON_PNG = new byte[]{2, 5};
+    private static final String ID = "ID";
+    private static final long LAST_OBSERVATION_TIMESTAMP_MILLIS = 934234L;
+    private static final String MAC_ADDRESS = "MAC_ADDRESS";
+    private static final String NAME = "NAME";
+    private static final String PACKAGE_NAME = "PACKAGE_NAME";
+    private static final long PENDING_APP_INSTALL_TIMESTAMP_MILLIS = 832393L;
+    private static final int RSSI = 9;
+    private static final int STATE = 63;
+    private static final String TITLE = "TITLE";
+    private static final String TRIGGER_ID = "TRIGGER_ID";
+    private static final int TX_POWER = 62;
+
+    private static final int ELIGIBLE_ACCOUNTS_NUM = 2;
+    private static final ImmutableList<FastPairEligibleAccount> ELIGIBLE_ACCOUNTS =
+            ImmutableList.of(
+                    genHappyPathFastPairEligibleAccount(ELIGIBLE_ACCOUNT_1,
+                            ELIGIBLE_ACCOUNT_1_OPT_IN),
+                    genHappyPathFastPairEligibleAccount(ELIGIBLE_ACCOUNT_2,
+                            ELIGIBLE_ACCOUNT_2_OPT_IN));
+    private static final int ACCOUNTKEY_DEVICE_NUM = 2;
+    private static final ImmutableList<FastPairAccountKeyDeviceMetadata>
+            FAST_PAIR_ACCOUNT_DEVICES_METADATA =
+            ImmutableList.of(
+                    genHappyPathFastPairAccountkeyDeviceMetadata(),
+                    genHappyPathFastPairAccountkeyDeviceMetadata());
+
+    private static final FastPairAntispoofKeyDeviceMetadataRequestParcel
+            FAST_PAIR_ANTI_SPOOF_KEY_DEVICE_METADATA_REQUEST_PARCEL =
+            genFastPairAntispoofKeyDeviceMetadataRequestParcel();
+    private static final FastPairAccountDevicesMetadataRequestParcel
+            FAST_PAIR_ACCOUNT_DEVICES_METADATA_REQUEST_PARCEL =
+            genFastPairAccountDevicesMetadataRequestParcel();
+    private static final FastPairEligibleAccountsRequestParcel
+            FAST_PAIR_ELIGIBLE_ACCOUNTS_REQUEST_PARCEL =
+            genFastPairEligibleAccountsRequestParcel();
+    private static final FastPairManageAccountRequestParcel
+            FAST_PAIR_MANAGE_ACCOUNT_REQUEST_PARCEL =
+            genFastPairManageAccountRequestParcel();
+    private static final FastPairManageAccountDeviceRequestParcel
+            FAST_PAIR_MANAGE_ACCOUNT_DEVICE_REQUEST_PARCEL =
+            genFastPairManageAccountDeviceRequestParcel();
+    private static final FastPairAntispoofKeyDeviceMetadata
+            HAPPY_PATH_FAST_PAIR_ANTI_SPOOF_KEY_DEVICE_METADATA =
+            genHappyPathFastPairAntispoofKeyDeviceMetadata();
+
+    @Captor private ArgumentCaptor<FastPairEligibleAccountParcel[]>
+            mFastPairEligibleAccountParcelsArgumentCaptor;
+    @Captor private ArgumentCaptor<FastPairAccountKeyDeviceMetadataParcel[]>
+            mFastPairAccountKeyDeviceMetadataParcelsArgumentCaptor;
+
+    @Mock private FastPairDataProviderService mMockFastPairDataProviderService;
+    @Mock private IFastPairAntispoofKeyDeviceMetadataCallback.Stub
+            mAntispoofKeyDeviceMetadataCallback;
+    @Mock private IFastPairAccountDevicesMetadataCallback.Stub mAccountDevicesMetadataCallback;
+    @Mock private IFastPairEligibleAccountsCallback.Stub mEligibleAccountsCallback;
+    @Mock private IFastPairManageAccountCallback.Stub mManageAccountCallback;
+    @Mock private IFastPairManageAccountDeviceCallback.Stub mManageAccountDeviceCallback;
+
+    private MyHappyPathProvider mHappyPathFastPairDataProvider;
+    private MyErrorPathProvider mErrorPathFastPairDataProvider;
+
+    @Before
+    public void setUp() throws Exception {
+        initMocks(this);
+
+        mHappyPathFastPairDataProvider =
+                new MyHappyPathProvider(TAG, mMockFastPairDataProviderService);
+        mErrorPathFastPairDataProvider =
+                new MyErrorPathProvider(TAG, mMockFastPairDataProviderService);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testHappyPathLoadFastPairAntispoofKeyDeviceMetadata() throws Exception {
+        // AOSP sends calls to OEM via Parcelable.
+        mHappyPathFastPairDataProvider.asProvider().loadFastPairAntispoofKeyDeviceMetadata(
+                FAST_PAIR_ANTI_SPOOF_KEY_DEVICE_METADATA_REQUEST_PARCEL,
+                mAntispoofKeyDeviceMetadataCallback);
+
+        // OEM receives request and verifies that it is as expected.
+        final ArgumentCaptor<FastPairDataProviderService.FastPairAntispoofKeyDeviceMetadataRequest>
+                fastPairAntispoofKeyDeviceMetadataRequestCaptor =
+                ArgumentCaptor.forClass(
+                        FastPairDataProviderService.FastPairAntispoofKeyDeviceMetadataRequest.class
+                );
+        verify(mMockFastPairDataProviderService).onLoadFastPairAntispoofKeyDeviceMetadata(
+                fastPairAntispoofKeyDeviceMetadataRequestCaptor.capture(),
+                any(FastPairDataProviderService.FastPairAntispoofKeyDeviceMetadataCallback.class));
+        ensureHappyPathAsExpected(fastPairAntispoofKeyDeviceMetadataRequestCaptor.getValue());
+
+        // AOSP receives responses and verifies that it is as expected.
+        final ArgumentCaptor<FastPairAntispoofKeyDeviceMetadataParcel>
+                fastPairAntispoofKeyDeviceMetadataParcelCaptor =
+                ArgumentCaptor.forClass(FastPairAntispoofKeyDeviceMetadataParcel.class);
+        verify(mAntispoofKeyDeviceMetadataCallback).onFastPairAntispoofKeyDeviceMetadataReceived(
+                fastPairAntispoofKeyDeviceMetadataParcelCaptor.capture());
+        ensureHappyPathAsExpected(fastPairAntispoofKeyDeviceMetadataParcelCaptor.getValue());
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testHappyPathLoadFastPairAccountDevicesMetadata() throws Exception {
+        // AOSP sends calls to OEM via Parcelable.
+        mHappyPathFastPairDataProvider.asProvider().loadFastPairAccountDevicesMetadata(
+                FAST_PAIR_ACCOUNT_DEVICES_METADATA_REQUEST_PARCEL,
+                mAccountDevicesMetadataCallback);
+
+        // OEM receives request and verifies that it is as expected.
+        final ArgumentCaptor<FastPairDataProviderService.FastPairAccountDevicesMetadataRequest>
+                fastPairAccountDevicesMetadataRequestCaptor =
+                ArgumentCaptor.forClass(
+                        FastPairDataProviderService.FastPairAccountDevicesMetadataRequest.class);
+        verify(mMockFastPairDataProviderService).onLoadFastPairAccountDevicesMetadata(
+                fastPairAccountDevicesMetadataRequestCaptor.capture(),
+                any(FastPairDataProviderService.FastPairAccountDevicesMetadataCallback.class));
+        ensureHappyPathAsExpected(fastPairAccountDevicesMetadataRequestCaptor.getValue());
+
+        // AOSP receives responses and verifies that it is as expected.
+        verify(mAccountDevicesMetadataCallback).onFastPairAccountDevicesMetadataReceived(
+                mFastPairAccountKeyDeviceMetadataParcelsArgumentCaptor.capture());
+        ensureHappyPathAsExpected(
+                mFastPairAccountKeyDeviceMetadataParcelsArgumentCaptor.getValue());
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testHappyPathLoadFastPairEligibleAccounts() throws Exception {
+        // AOSP sends calls to OEM via Parcelable.
+        mHappyPathFastPairDataProvider.asProvider().loadFastPairEligibleAccounts(
+                FAST_PAIR_ELIGIBLE_ACCOUNTS_REQUEST_PARCEL,
+                mEligibleAccountsCallback);
+
+        // OEM receives request and verifies that it is as expected.
+        final ArgumentCaptor<FastPairDataProviderService.FastPairEligibleAccountsRequest>
+                fastPairEligibleAccountsRequestCaptor =
+                ArgumentCaptor.forClass(
+                        FastPairDataProviderService.FastPairEligibleAccountsRequest.class);
+        verify(mMockFastPairDataProviderService).onLoadFastPairEligibleAccounts(
+                fastPairEligibleAccountsRequestCaptor.capture(),
+                any(FastPairDataProviderService.FastPairEligibleAccountsCallback.class));
+        ensureHappyPathAsExpected(fastPairEligibleAccountsRequestCaptor.getValue());
+
+        // AOSP receives responses and verifies that it is as expected.
+        verify(mEligibleAccountsCallback).onFastPairEligibleAccountsReceived(
+                mFastPairEligibleAccountParcelsArgumentCaptor.capture());
+        ensureHappyPathAsExpected(mFastPairEligibleAccountParcelsArgumentCaptor.getValue());
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testHappyPathManageFastPairAccount() throws Exception {
+        // AOSP sends calls to OEM via Parcelable.
+        mHappyPathFastPairDataProvider.asProvider().manageFastPairAccount(
+                FAST_PAIR_MANAGE_ACCOUNT_REQUEST_PARCEL,
+                mManageAccountCallback);
+
+        // OEM receives request and verifies that it is as expected.
+        final ArgumentCaptor<FastPairDataProviderService.FastPairManageAccountRequest>
+                fastPairManageAccountRequestCaptor =
+                ArgumentCaptor.forClass(
+                        FastPairDataProviderService.FastPairManageAccountRequest.class);
+        verify(mMockFastPairDataProviderService).onManageFastPairAccount(
+                fastPairManageAccountRequestCaptor.capture(),
+                any(FastPairDataProviderService.FastPairManageActionCallback.class));
+        ensureHappyPathAsExpected(fastPairManageAccountRequestCaptor.getValue());
+
+        // AOSP receives SUCCESS response.
+        verify(mManageAccountCallback).onSuccess();
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testHappyPathManageFastPairAccountDevice() throws Exception {
+        // AOSP sends calls to OEM via Parcelable.
+        mHappyPathFastPairDataProvider.asProvider().manageFastPairAccountDevice(
+                FAST_PAIR_MANAGE_ACCOUNT_DEVICE_REQUEST_PARCEL,
+                mManageAccountDeviceCallback);
+
+        // OEM receives request and verifies that it is as expected.
+        final ArgumentCaptor<FastPairDataProviderService.FastPairManageAccountDeviceRequest>
+                fastPairManageAccountDeviceRequestCaptor =
+                ArgumentCaptor.forClass(
+                        FastPairDataProviderService.FastPairManageAccountDeviceRequest.class);
+        verify(mMockFastPairDataProviderService).onManageFastPairAccountDevice(
+                fastPairManageAccountDeviceRequestCaptor.capture(),
+                any(FastPairDataProviderService.FastPairManageActionCallback.class));
+        ensureHappyPathAsExpected(fastPairManageAccountDeviceRequestCaptor.getValue());
+
+        // AOSP receives SUCCESS response.
+        verify(mManageAccountDeviceCallback).onSuccess();
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testErrorPathLoadFastPairAntispoofKeyDeviceMetadata() throws Exception {
+        mErrorPathFastPairDataProvider.asProvider().loadFastPairAntispoofKeyDeviceMetadata(
+                FAST_PAIR_ANTI_SPOOF_KEY_DEVICE_METADATA_REQUEST_PARCEL,
+                mAntispoofKeyDeviceMetadataCallback);
+        verify(mMockFastPairDataProviderService).onLoadFastPairAntispoofKeyDeviceMetadata(
+                any(FastPairDataProviderService.FastPairAntispoofKeyDeviceMetadataRequest.class),
+                any(FastPairDataProviderService.FastPairAntispoofKeyDeviceMetadataCallback.class));
+        verify(mAntispoofKeyDeviceMetadataCallback).onError(
+                eq(ERROR_CODE_BAD_REQUEST), eq(ERROR_STRING));
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testErrorPathLoadFastPairAccountDevicesMetadata() throws Exception {
+        mErrorPathFastPairDataProvider.asProvider().loadFastPairAccountDevicesMetadata(
+                FAST_PAIR_ACCOUNT_DEVICES_METADATA_REQUEST_PARCEL,
+                mAccountDevicesMetadataCallback);
+        verify(mMockFastPairDataProviderService).onLoadFastPairAccountDevicesMetadata(
+                any(FastPairDataProviderService.FastPairAccountDevicesMetadataRequest.class),
+                any(FastPairDataProviderService.FastPairAccountDevicesMetadataCallback.class));
+        verify(mAccountDevicesMetadataCallback).onError(
+                eq(ERROR_CODE_BAD_REQUEST), eq(ERROR_STRING));
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testErrorPathLoadFastPairEligibleAccounts() throws Exception {
+        mErrorPathFastPairDataProvider.asProvider().loadFastPairEligibleAccounts(
+                FAST_PAIR_ELIGIBLE_ACCOUNTS_REQUEST_PARCEL,
+                mEligibleAccountsCallback);
+        verify(mMockFastPairDataProviderService).onLoadFastPairEligibleAccounts(
+                any(FastPairDataProviderService.FastPairEligibleAccountsRequest.class),
+                any(FastPairDataProviderService.FastPairEligibleAccountsCallback.class));
+        verify(mEligibleAccountsCallback).onError(
+                eq(ERROR_CODE_BAD_REQUEST), eq(ERROR_STRING));
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testErrorPathManageFastPairAccount() throws Exception {
+        mErrorPathFastPairDataProvider.asProvider().manageFastPairAccount(
+                FAST_PAIR_MANAGE_ACCOUNT_REQUEST_PARCEL,
+                mManageAccountCallback);
+        verify(mMockFastPairDataProviderService).onManageFastPairAccount(
+                any(FastPairDataProviderService.FastPairManageAccountRequest.class),
+                any(FastPairDataProviderService.FastPairManageActionCallback.class));
+        verify(mManageAccountCallback).onError(eq(ERROR_CODE_BAD_REQUEST), eq(ERROR_STRING));
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testErrorPathManageFastPairAccountDevice() throws Exception {
+        mErrorPathFastPairDataProvider.asProvider().manageFastPairAccountDevice(
+                FAST_PAIR_MANAGE_ACCOUNT_DEVICE_REQUEST_PARCEL,
+                mManageAccountDeviceCallback);
+        verify(mMockFastPairDataProviderService).onManageFastPairAccountDevice(
+                any(FastPairDataProviderService.FastPairManageAccountDeviceRequest.class),
+                any(FastPairDataProviderService.FastPairManageActionCallback.class));
+        verify(mManageAccountDeviceCallback).onError(eq(ERROR_CODE_BAD_REQUEST), eq(ERROR_STRING));
+    }
+
+    public static class MyHappyPathProvider extends FastPairDataProviderService {
+
+        private final FastPairDataProviderService mMockFastPairDataProviderService;
+
+        public MyHappyPathProvider(@NonNull String tag, FastPairDataProviderService mock) {
+            super(tag);
+            mMockFastPairDataProviderService = mock;
+        }
+
+        public IFastPairDataProvider asProvider() {
+            Intent intent = new Intent();
+            return IFastPairDataProvider.Stub.asInterface(onBind(intent));
+        }
+
+        @Override
+        public void onLoadFastPairAntispoofKeyDeviceMetadata(
+                @NonNull FastPairAntispoofKeyDeviceMetadataRequest request,
+                @NonNull FastPairAntispoofKeyDeviceMetadataCallback callback) {
+            mMockFastPairDataProviderService.onLoadFastPairAntispoofKeyDeviceMetadata(
+                    request, callback);
+            callback.onFastPairAntispoofKeyDeviceMetadataReceived(
+                    HAPPY_PATH_FAST_PAIR_ANTI_SPOOF_KEY_DEVICE_METADATA);
+        }
+
+        @Override
+        public void onLoadFastPairAccountDevicesMetadata(
+                @NonNull FastPairAccountDevicesMetadataRequest request,
+                @NonNull FastPairAccountDevicesMetadataCallback callback) {
+            mMockFastPairDataProviderService.onLoadFastPairAccountDevicesMetadata(
+                    request, callback);
+            callback.onFastPairAccountDevicesMetadataReceived(FAST_PAIR_ACCOUNT_DEVICES_METADATA);
+        }
+
+        @Override
+        public void onLoadFastPairEligibleAccounts(
+                @NonNull FastPairEligibleAccountsRequest request,
+                @NonNull FastPairEligibleAccountsCallback callback) {
+            mMockFastPairDataProviderService.onLoadFastPairEligibleAccounts(
+                    request, callback);
+            callback.onFastPairEligibleAccountsReceived(ELIGIBLE_ACCOUNTS);
+        }
+
+        @Override
+        public void onManageFastPairAccount(
+                @NonNull FastPairManageAccountRequest request,
+                @NonNull FastPairManageActionCallback callback) {
+            mMockFastPairDataProviderService.onManageFastPairAccount(request, callback);
+            callback.onSuccess();
+        }
+
+        @Override
+        public void onManageFastPairAccountDevice(
+                @NonNull FastPairManageAccountDeviceRequest request,
+                @NonNull FastPairManageActionCallback callback) {
+            mMockFastPairDataProviderService.onManageFastPairAccountDevice(request, callback);
+            callback.onSuccess();
+        }
+    }
+
+    public static class MyErrorPathProvider extends FastPairDataProviderService {
+
+        private final FastPairDataProviderService mMockFastPairDataProviderService;
+
+        public MyErrorPathProvider(@NonNull String tag, FastPairDataProviderService mock) {
+            super(tag);
+            mMockFastPairDataProviderService = mock;
+        }
+
+        public IFastPairDataProvider asProvider() {
+            Intent intent = new Intent();
+            return IFastPairDataProvider.Stub.asInterface(onBind(intent));
+        }
+
+        @Override
+        public void onLoadFastPairAntispoofKeyDeviceMetadata(
+                @NonNull FastPairAntispoofKeyDeviceMetadataRequest request,
+                @NonNull FastPairAntispoofKeyDeviceMetadataCallback callback) {
+            mMockFastPairDataProviderService.onLoadFastPairAntispoofKeyDeviceMetadata(
+                    request, callback);
+            callback.onError(ERROR_CODE_BAD_REQUEST, ERROR_STRING);
+        }
+
+        @Override
+        public void onLoadFastPairAccountDevicesMetadata(
+                @NonNull FastPairAccountDevicesMetadataRequest request,
+                @NonNull FastPairAccountDevicesMetadataCallback callback) {
+            mMockFastPairDataProviderService.onLoadFastPairAccountDevicesMetadata(
+                    request, callback);
+            callback.onError(ERROR_CODE_BAD_REQUEST, ERROR_STRING);
+        }
+
+        @Override
+        public void onLoadFastPairEligibleAccounts(
+                @NonNull FastPairEligibleAccountsRequest request,
+                @NonNull FastPairEligibleAccountsCallback callback) {
+            mMockFastPairDataProviderService.onLoadFastPairEligibleAccounts(request, callback);
+            callback.onError(ERROR_CODE_BAD_REQUEST, ERROR_STRING);
+        }
+
+        @Override
+        public void onManageFastPairAccount(
+                @NonNull FastPairManageAccountRequest request,
+                @NonNull FastPairManageActionCallback callback) {
+            mMockFastPairDataProviderService.onManageFastPairAccount(request, callback);
+            callback.onError(ERROR_CODE_BAD_REQUEST, ERROR_STRING);
+        }
+
+        @Override
+        public void onManageFastPairAccountDevice(
+                @NonNull FastPairManageAccountDeviceRequest request,
+                @NonNull FastPairManageActionCallback callback) {
+            mMockFastPairDataProviderService.onManageFastPairAccountDevice(request, callback);
+            callback.onError(ERROR_CODE_BAD_REQUEST, ERROR_STRING);
+        }
+    }
+
+    /* Generates AntispoofKeyDeviceMetadataRequestParcel. */
+    private static FastPairAntispoofKeyDeviceMetadataRequestParcel
+            genFastPairAntispoofKeyDeviceMetadataRequestParcel() {
+        FastPairAntispoofKeyDeviceMetadataRequestParcel requestParcel =
+                new FastPairAntispoofKeyDeviceMetadataRequestParcel();
+        requestParcel.modelId = REQUEST_MODEL_ID;
+
+        return requestParcel;
+    }
+
+    /* Generates AccountDevicesMetadataRequestParcel. */
+    private static FastPairAccountDevicesMetadataRequestParcel
+            genFastPairAccountDevicesMetadataRequestParcel() {
+        FastPairAccountDevicesMetadataRequestParcel requestParcel =
+                new FastPairAccountDevicesMetadataRequestParcel();
+
+        requestParcel.account = ACCOUNTDEVICES_METADATA_ACCOUNT;
+        requestParcel.deviceAccountKeys = new ByteArrayParcel[NUM_ACCOUNT_DEVICES];
+        requestParcel.deviceAccountKeys[0] = new ByteArrayParcel();
+        requestParcel.deviceAccountKeys[1] = new ByteArrayParcel();
+        requestParcel.deviceAccountKeys[0].byteArray = ACCOUNT_KEY;
+        requestParcel.deviceAccountKeys[1].byteArray = ACCOUNT_KEY_2;
+
+        return requestParcel;
+    }
+
+    /* Generates FastPairEligibleAccountsRequestParcel. */
+    private static FastPairEligibleAccountsRequestParcel
+            genFastPairEligibleAccountsRequestParcel() {
+        FastPairEligibleAccountsRequestParcel requestParcel =
+                new FastPairEligibleAccountsRequestParcel();
+        // No fields since FastPairEligibleAccountsRequestParcel is just a place holder now.
+        return requestParcel;
+    }
+
+    /* Generates FastPairManageAccountRequestParcel. */
+    private static FastPairManageAccountRequestParcel
+            genFastPairManageAccountRequestParcel() {
+        FastPairManageAccountRequestParcel requestParcel =
+                new FastPairManageAccountRequestParcel();
+        requestParcel.account = MANAGE_ACCOUNT;
+        requestParcel.requestType = MANAGE_ACCOUNT_REQUEST_TYPE;
+
+        return requestParcel;
+    }
+
+    /* Generates FastPairManageAccountDeviceRequestParcel. */
+    private static FastPairManageAccountDeviceRequestParcel
+            genFastPairManageAccountDeviceRequestParcel() {
+        FastPairManageAccountDeviceRequestParcel requestParcel =
+                new FastPairManageAccountDeviceRequestParcel();
+        requestParcel.account = MANAGE_ACCOUNT;
+        requestParcel.requestType = MANAGE_ACCOUNT_REQUEST_TYPE;
+        requestParcel.accountKeyDeviceMetadata =
+                genHappyPathFastPairAccountkeyDeviceMetadataParcel();
+
+        return requestParcel;
+    }
+
+    /* Generates Happy Path AntispoofKeyDeviceMetadata. */
+    private static FastPairAntispoofKeyDeviceMetadata
+            genHappyPathFastPairAntispoofKeyDeviceMetadata() {
+        FastPairAntispoofKeyDeviceMetadata.Builder builder =
+                new FastPairAntispoofKeyDeviceMetadata.Builder();
+        builder.setAntispoofPublicKey(ANTI_SPOOFING_KEY);
+        builder.setFastPairDeviceMetadata(genHappyPathFastPairDeviceMetadata());
+
+        return builder.build();
+    }
+
+    /* Generates Happy Path FastPairAccountKeyDeviceMetadata. */
+    private static FastPairAccountKeyDeviceMetadata
+            genHappyPathFastPairAccountkeyDeviceMetadata() {
+        FastPairAccountKeyDeviceMetadata.Builder builder =
+                new FastPairAccountKeyDeviceMetadata.Builder();
+        builder.setDeviceAccountKey(ACCOUNT_KEY);
+        builder.setFastPairDeviceMetadata(genHappyPathFastPairDeviceMetadata());
+        builder.setSha256DeviceAccountKeyPublicAddress(SHA256_ACCOUNT_KEY_PUBLIC_ADDRESS);
+        builder.setFastPairDiscoveryItem(genHappyPathFastPairDiscoveryItem());
+
+        return builder.build();
+    }
+
+    /* Generates Happy Path FastPairAccountKeyDeviceMetadataParcel. */
+    private static FastPairAccountKeyDeviceMetadataParcel
+            genHappyPathFastPairAccountkeyDeviceMetadataParcel() {
+        FastPairAccountKeyDeviceMetadataParcel parcel =
+                new FastPairAccountKeyDeviceMetadataParcel();
+        parcel.deviceAccountKey = ACCOUNT_KEY;
+        parcel.metadata = genHappyPathFastPairDeviceMetadataParcel();
+        parcel.sha256DeviceAccountKeyPublicAddress = SHA256_ACCOUNT_KEY_PUBLIC_ADDRESS;
+        parcel.discoveryItem = genHappyPathFastPairDiscoveryItemParcel();
+
+        return parcel;
+    }
+
+    /* Generates Happy Path DiscoveryItem. */
+    private static FastPairDiscoveryItem genHappyPathFastPairDiscoveryItem() {
+        FastPairDiscoveryItem.Builder builder = new FastPairDiscoveryItem.Builder();
+
+        builder.setActionUrl(ACTION_URL);
+        builder.setActionUrlType(ACTION_URL_TYPE);
+        builder.setAppName(APP_NAME);
+        builder.setAuthenticationPublicKeySecp256r1(AUTHENTICATION_PUBLIC_KEY_SEC_P256R1);
+        builder.setDescription(DESCRIPTION);
+        builder.setDeviceName(DEVICE_NAME);
+        builder.setDisplayUrl(DISPLAY_URL);
+        builder.setFirstObservationTimestampMillis(FIRST_OBSERVATION_TIMESTAMP_MILLIS);
+        builder.setIconFfeUrl(ICON_FIFE_URL);
+        builder.setIconPng(ICON_PNG);
+        builder.setId(ID);
+        builder.setLastObservationTimestampMillis(LAST_OBSERVATION_TIMESTAMP_MILLIS);
+        builder.setMacAddress(MAC_ADDRESS);
+        builder.setPackageName(PACKAGE_NAME);
+        builder.setPendingAppInstallTimestampMillis(PENDING_APP_INSTALL_TIMESTAMP_MILLIS);
+        builder.setRssi(RSSI);
+        builder.setState(STATE);
+        builder.setTitle(TITLE);
+        builder.setTriggerId(TRIGGER_ID);
+        builder.setTxPower(TX_POWER);
+
+        return builder.build();
+    }
+
+    /* Generates Happy Path DiscoveryItemParcel. */
+    private static FastPairDiscoveryItemParcel genHappyPathFastPairDiscoveryItemParcel() {
+        FastPairDiscoveryItemParcel parcel = new FastPairDiscoveryItemParcel();
+
+        parcel.actionUrl = ACTION_URL;
+        parcel.actionUrlType = ACTION_URL_TYPE;
+        parcel.appName = APP_NAME;
+        parcel.authenticationPublicKeySecp256r1 = AUTHENTICATION_PUBLIC_KEY_SEC_P256R1;
+        parcel.description = DESCRIPTION;
+        parcel.deviceName = DEVICE_NAME;
+        parcel.displayUrl = DISPLAY_URL;
+        parcel.firstObservationTimestampMillis = FIRST_OBSERVATION_TIMESTAMP_MILLIS;
+        parcel.iconFifeUrl = ICON_FIFE_URL;
+        parcel.iconPng = ICON_PNG;
+        parcel.id = ID;
+        parcel.lastObservationTimestampMillis = LAST_OBSERVATION_TIMESTAMP_MILLIS;
+        parcel.macAddress = MAC_ADDRESS;
+        parcel.packageName = PACKAGE_NAME;
+        parcel.pendingAppInstallTimestampMillis = PENDING_APP_INSTALL_TIMESTAMP_MILLIS;
+        parcel.rssi = RSSI;
+        parcel.state = STATE;
+        parcel.title = TITLE;
+        parcel.triggerId = TRIGGER_ID;
+        parcel.txPower = TX_POWER;
+
+        return parcel;
+    }
+
+    /* Generates Happy Path DeviceMetadata. */
+    private static FastPairDeviceMetadata genHappyPathFastPairDeviceMetadata() {
+        FastPairDeviceMetadata.Builder builder = new FastPairDeviceMetadata.Builder();
+        builder.setBleTxPower(BLE_TX_POWER);
+        builder.setConnectSuccessCompanionAppInstalled(CONNECT_SUCCESS_COMPANION_APP_INSTALLED);
+        builder.setConnectSuccessCompanionAppNotInstalled(
+                CONNECT_SUCCESS_COMPANION_APP_NOT_INSTALLED);
+        builder.setDeviceType(DEVICE_TYPE);
+        builder.setDownloadCompanionAppDescription(DOWNLOAD_COMPANION_APP_DESCRIPTION);
+        builder.setFailConnectGoToSettingsDescription(FAIL_CONNECT_GOTO_SETTINGS_DESCRIPTION);
+        builder.setImage(IMAGE);
+        builder.setImageUrl(IMAGE_URL);
+        builder.setInitialNotificationDescription(INITIAL_NOTIFICATION_DESCRIPTION);
+        builder.setInitialNotificationDescriptionNoAccount(
+                INITIAL_NOTIFICATION_DESCRIPTION_NO_ACCOUNT);
+        builder.setInitialPairingDescription(INITIAL_PAIRING_DESCRIPTION);
+        builder.setIntentUri(INTENT_URI);
+        builder.setName(NAME);
+        builder.setOpenCompanionAppDescription(OPEN_COMPANION_APP_DESCRIPTION);
+        builder.setRetroactivePairingDescription(RETRO_ACTIVE_PAIRING_DESCRIPTION);
+        builder.setSubsequentPairingDescription(SUBSEQUENT_PAIRING_DESCRIPTION);
+        builder.setTriggerDistance(TRIGGER_DISTANCE);
+        builder.setTrueWirelessImageUrlCase(TRUE_WIRELESS_IMAGE_URL_CASE);
+        builder.setTrueWirelessImageUrlLeftBud(TRUE_WIRELESS_IMAGE_URL_LEFT_BUD);
+        builder.setTrueWirelessImageUrlRightBud(TRUE_WIRELESS_IMAGE_URL_RIGHT_BUD);
+        builder.setUnableToConnectDescription(UNABLE_TO_CONNECT_DESCRIPTION);
+        builder.setUnableToConnectTitle(UNABLE_TO_CONNECT_TITLE);
+        builder.setUpdateCompanionAppDescription(UPDATE_COMPANION_APP_DESCRIPTION);
+        builder.setWaitLaunchCompanionAppDescription(WAIT_LAUNCH_COMPANION_APP_DESCRIPTION);
+
+        return builder.build();
+    }
+
+    /* Generates Happy Path DeviceMetadataParcel. */
+    private static FastPairDeviceMetadataParcel genHappyPathFastPairDeviceMetadataParcel() {
+        FastPairDeviceMetadataParcel parcel = new FastPairDeviceMetadataParcel();
+
+        parcel.bleTxPower = BLE_TX_POWER;
+        parcel.connectSuccessCompanionAppInstalled = CONNECT_SUCCESS_COMPANION_APP_INSTALLED;
+        parcel.connectSuccessCompanionAppNotInstalled =
+                CONNECT_SUCCESS_COMPANION_APP_NOT_INSTALLED;
+        parcel.deviceType = DEVICE_TYPE;
+        parcel.downloadCompanionAppDescription = DOWNLOAD_COMPANION_APP_DESCRIPTION;
+        parcel.failConnectGoToSettingsDescription = FAIL_CONNECT_GOTO_SETTINGS_DESCRIPTION;
+        parcel.image = IMAGE;
+        parcel.imageUrl = IMAGE_URL;
+        parcel.initialNotificationDescription = INITIAL_NOTIFICATION_DESCRIPTION;
+        parcel.initialNotificationDescriptionNoAccount =
+                INITIAL_NOTIFICATION_DESCRIPTION_NO_ACCOUNT;
+        parcel.initialPairingDescription = INITIAL_PAIRING_DESCRIPTION;
+        parcel.intentUri = INTENT_URI;
+        parcel.name = NAME;
+        parcel.openCompanionAppDescription = OPEN_COMPANION_APP_DESCRIPTION;
+        parcel.retroactivePairingDescription = RETRO_ACTIVE_PAIRING_DESCRIPTION;
+        parcel.subsequentPairingDescription = SUBSEQUENT_PAIRING_DESCRIPTION;
+        parcel.triggerDistance = TRIGGER_DISTANCE;
+        parcel.trueWirelessImageUrlCase = TRUE_WIRELESS_IMAGE_URL_CASE;
+        parcel.trueWirelessImageUrlLeftBud = TRUE_WIRELESS_IMAGE_URL_LEFT_BUD;
+        parcel.trueWirelessImageUrlRightBud = TRUE_WIRELESS_IMAGE_URL_RIGHT_BUD;
+        parcel.unableToConnectDescription = UNABLE_TO_CONNECT_DESCRIPTION;
+        parcel.unableToConnectTitle = UNABLE_TO_CONNECT_TITLE;
+        parcel.updateCompanionAppDescription = UPDATE_COMPANION_APP_DESCRIPTION;
+        parcel.waitLaunchCompanionAppDescription = WAIT_LAUNCH_COMPANION_APP_DESCRIPTION;
+
+        return parcel;
+    }
+
+    /* Generates Happy Path FastPairEligibleAccount. */
+    private static FastPairEligibleAccount genHappyPathFastPairEligibleAccount(
+            Account account, boolean optIn) {
+        FastPairEligibleAccount.Builder builder = new FastPairEligibleAccount.Builder();
+        builder.setAccount(account);
+        builder.setOptIn(optIn);
+
+        return builder.build();
+    }
+
+    /* Verifies Happy Path AntispoofKeyDeviceMetadataRequest. */
+    private static void ensureHappyPathAsExpected(
+            FastPairDataProviderService.FastPairAntispoofKeyDeviceMetadataRequest request) {
+        assertThat(request.getModelId()).isEqualTo(REQUEST_MODEL_ID);
+    }
+
+    /* Verifies Happy Path AccountDevicesMetadataRequest. */
+    private static void ensureHappyPathAsExpected(
+            FastPairDataProviderService.FastPairAccountDevicesMetadataRequest request) {
+        assertThat(request.getAccount()).isEqualTo(ACCOUNTDEVICES_METADATA_ACCOUNT);
+        assertThat(request.getDeviceAccountKeys().size()).isEqualTo(ACCOUNTKEY_DEVICE_NUM);
+        assertThat(request.getDeviceAccountKeys()).contains(ACCOUNT_KEY);
+        assertThat(request.getDeviceAccountKeys()).contains(ACCOUNT_KEY_2);
+    }
+
+    /* Verifies Happy Path FastPairEligibleAccountsRequest. */
+    @SuppressWarnings("UnusedVariable")
+    private static void ensureHappyPathAsExpected(
+            FastPairDataProviderService.FastPairEligibleAccountsRequest request) {
+        // No fields since FastPairEligibleAccountsRequest is just a place holder now.
+    }
+
+    /* Verifies Happy Path FastPairManageAccountRequest. */
+    private static void ensureHappyPathAsExpected(
+            FastPairDataProviderService.FastPairManageAccountRequest request) {
+        assertThat(request.getAccount()).isEqualTo(MANAGE_ACCOUNT);
+        assertThat(request.getRequestType()).isEqualTo(MANAGE_ACCOUNT_REQUEST_TYPE);
+    }
+
+    /* Verifies Happy Path FastPairManageAccountDeviceRequest. */
+    private static void ensureHappyPathAsExpected(
+            FastPairDataProviderService.FastPairManageAccountDeviceRequest request) {
+        assertThat(request.getAccount()).isEqualTo(MANAGE_ACCOUNT);
+        assertThat(request.getRequestType()).isEqualTo(MANAGE_ACCOUNT_REQUEST_TYPE);
+        ensureHappyPathAsExpected(request.getAccountKeyDeviceMetadata());
+    }
+
+    /* Verifies Happy Path AntispoofKeyDeviceMetadataParcel. */
+    private static void ensureHappyPathAsExpected(
+            FastPairAntispoofKeyDeviceMetadataParcel metadataParcel) {
+        assertThat(metadataParcel).isNotNull();
+        assertThat(metadataParcel.antispoofPublicKey).isEqualTo(ANTI_SPOOFING_KEY);
+        ensureHappyPathAsExpected(metadataParcel.deviceMetadata);
+    }
+
+    /* Verifies Happy Path FastPairAccountKeyDeviceMetadataParcel[]. */
+    private static void ensureHappyPathAsExpected(
+            FastPairAccountKeyDeviceMetadataParcel[] metadataParcels) {
+        assertThat(metadataParcels).isNotNull();
+        assertThat(metadataParcels).hasLength(ACCOUNTKEY_DEVICE_NUM);
+        for (FastPairAccountKeyDeviceMetadataParcel parcel: metadataParcels) {
+            ensureHappyPathAsExpected(parcel);
+        }
+    }
+
+    /* Verifies Happy Path FastPairAccountKeyDeviceMetadataParcel. */
+    private static void ensureHappyPathAsExpected(
+            FastPairAccountKeyDeviceMetadataParcel metadataParcel) {
+        assertThat(metadataParcel).isNotNull();
+        assertThat(metadataParcel.deviceAccountKey).isEqualTo(ACCOUNT_KEY);
+        assertThat(metadataParcel.sha256DeviceAccountKeyPublicAddress)
+                .isEqualTo(SHA256_ACCOUNT_KEY_PUBLIC_ADDRESS);
+        ensureHappyPathAsExpected(metadataParcel.metadata);
+        ensureHappyPathAsExpected(metadataParcel.discoveryItem);
+    }
+
+    /* Verifies Happy Path FastPairAccountKeyDeviceMetadata. */
+    private static void ensureHappyPathAsExpected(
+            FastPairAccountKeyDeviceMetadata metadata) {
+        assertThat(metadata.getDeviceAccountKey()).isEqualTo(ACCOUNT_KEY);
+        assertThat(metadata.getSha256DeviceAccountKeyPublicAddress())
+                .isEqualTo(SHA256_ACCOUNT_KEY_PUBLIC_ADDRESS);
+        ensureHappyPathAsExpected(metadata.getFastPairDeviceMetadata());
+        ensureHappyPathAsExpected(metadata.getFastPairDiscoveryItem());
+    }
+
+    /* Verifies Happy Path DeviceMetadataParcel. */
+    private static void ensureHappyPathAsExpected(FastPairDeviceMetadataParcel metadataParcel) {
+        assertThat(metadataParcel).isNotNull();
+        assertThat(metadataParcel.bleTxPower).isEqualTo(BLE_TX_POWER);
+
+        assertThat(metadataParcel.connectSuccessCompanionAppInstalled).isEqualTo(
+                CONNECT_SUCCESS_COMPANION_APP_INSTALLED);
+        assertThat(metadataParcel.connectSuccessCompanionAppNotInstalled).isEqualTo(
+                CONNECT_SUCCESS_COMPANION_APP_NOT_INSTALLED);
+
+        assertThat(metadataParcel.deviceType).isEqualTo(DEVICE_TYPE);
+        assertThat(metadataParcel.downloadCompanionAppDescription).isEqualTo(
+                DOWNLOAD_COMPANION_APP_DESCRIPTION);
+
+        assertThat(metadataParcel.failConnectGoToSettingsDescription).isEqualTo(
+                FAIL_CONNECT_GOTO_SETTINGS_DESCRIPTION);
+
+        assertThat(metadataParcel.image).isEqualTo(IMAGE);
+        assertThat(metadataParcel.imageUrl).isEqualTo(IMAGE_URL);
+        assertThat(metadataParcel.initialNotificationDescription).isEqualTo(
+                INITIAL_NOTIFICATION_DESCRIPTION);
+        assertThat(metadataParcel.initialNotificationDescriptionNoAccount).isEqualTo(
+                INITIAL_NOTIFICATION_DESCRIPTION_NO_ACCOUNT);
+        assertThat(metadataParcel.initialPairingDescription).isEqualTo(INITIAL_PAIRING_DESCRIPTION);
+        assertThat(metadataParcel.intentUri).isEqualTo(INTENT_URI);
+
+        assertThat(metadataParcel.name).isEqualTo(NAME);
+
+        assertThat(metadataParcel.openCompanionAppDescription).isEqualTo(
+                OPEN_COMPANION_APP_DESCRIPTION);
+
+        assertThat(metadataParcel.retroactivePairingDescription).isEqualTo(
+                RETRO_ACTIVE_PAIRING_DESCRIPTION);
+
+        assertThat(metadataParcel.subsequentPairingDescription).isEqualTo(
+                SUBSEQUENT_PAIRING_DESCRIPTION);
+
+        assertThat(metadataParcel.triggerDistance).isWithin(DELTA).of(TRIGGER_DISTANCE);
+        assertThat(metadataParcel.trueWirelessImageUrlCase).isEqualTo(TRUE_WIRELESS_IMAGE_URL_CASE);
+        assertThat(metadataParcel.trueWirelessImageUrlLeftBud).isEqualTo(
+                TRUE_WIRELESS_IMAGE_URL_LEFT_BUD);
+        assertThat(metadataParcel.trueWirelessImageUrlRightBud).isEqualTo(
+                TRUE_WIRELESS_IMAGE_URL_RIGHT_BUD);
+
+        assertThat(metadataParcel.unableToConnectDescription).isEqualTo(
+                UNABLE_TO_CONNECT_DESCRIPTION);
+        assertThat(metadataParcel.unableToConnectTitle).isEqualTo(UNABLE_TO_CONNECT_TITLE);
+        assertThat(metadataParcel.updateCompanionAppDescription).isEqualTo(
+                UPDATE_COMPANION_APP_DESCRIPTION);
+
+        assertThat(metadataParcel.waitLaunchCompanionAppDescription).isEqualTo(
+                WAIT_LAUNCH_COMPANION_APP_DESCRIPTION);
+    }
+
+    /* Verifies Happy Path DeviceMetadata. */
+    private static void ensureHappyPathAsExpected(FastPairDeviceMetadata metadata) {
+        assertThat(metadata.getBleTxPower()).isEqualTo(BLE_TX_POWER);
+        assertThat(metadata.getConnectSuccessCompanionAppInstalled())
+                .isEqualTo(CONNECT_SUCCESS_COMPANION_APP_INSTALLED);
+        assertThat(metadata.getConnectSuccessCompanionAppNotInstalled())
+                .isEqualTo(CONNECT_SUCCESS_COMPANION_APP_NOT_INSTALLED);
+        assertThat(metadata.getDeviceType()).isEqualTo(DEVICE_TYPE);
+        assertThat(metadata.getDownloadCompanionAppDescription())
+                .isEqualTo(DOWNLOAD_COMPANION_APP_DESCRIPTION);
+        assertThat(metadata.getFailConnectGoToSettingsDescription())
+                .isEqualTo(FAIL_CONNECT_GOTO_SETTINGS_DESCRIPTION);
+        assertThat(metadata.getImage()).isEqualTo(IMAGE);
+        assertThat(metadata.getImageUrl()).isEqualTo(IMAGE_URL);
+        assertThat(metadata.getInitialNotificationDescription())
+                .isEqualTo(INITIAL_NOTIFICATION_DESCRIPTION);
+        assertThat(metadata.getInitialNotificationDescriptionNoAccount())
+                .isEqualTo(INITIAL_NOTIFICATION_DESCRIPTION_NO_ACCOUNT);
+        assertThat(metadata.getInitialPairingDescription()).isEqualTo(INITIAL_PAIRING_DESCRIPTION);
+        assertThat(metadata.getIntentUri()).isEqualTo(INTENT_URI);
+        assertThat(metadata.getName()).isEqualTo(NAME);
+        assertThat(metadata.getOpenCompanionAppDescription())
+                .isEqualTo(OPEN_COMPANION_APP_DESCRIPTION);
+        assertThat(metadata.getRetroactivePairingDescription())
+                .isEqualTo(RETRO_ACTIVE_PAIRING_DESCRIPTION);
+        assertThat(metadata.getSubsequentPairingDescription())
+                .isEqualTo(SUBSEQUENT_PAIRING_DESCRIPTION);
+        assertThat(metadata.getTriggerDistance()).isWithin(DELTA).of(TRIGGER_DISTANCE);
+        assertThat(metadata.getTrueWirelessImageUrlCase()).isEqualTo(TRUE_WIRELESS_IMAGE_URL_CASE);
+        assertThat(metadata.getTrueWirelessImageUrlLeftBud())
+                .isEqualTo(TRUE_WIRELESS_IMAGE_URL_LEFT_BUD);
+        assertThat(metadata.getTrueWirelessImageUrlRightBud())
+                .isEqualTo(TRUE_WIRELESS_IMAGE_URL_RIGHT_BUD);
+        assertThat(metadata.getUnableToConnectDescription())
+                .isEqualTo(UNABLE_TO_CONNECT_DESCRIPTION);
+        assertThat(metadata.getUnableToConnectTitle()).isEqualTo(UNABLE_TO_CONNECT_TITLE);
+        assertThat(metadata.getUpdateCompanionAppDescription())
+                .isEqualTo(UPDATE_COMPANION_APP_DESCRIPTION);
+        assertThat(metadata.getWaitLaunchCompanionAppDescription())
+                .isEqualTo(WAIT_LAUNCH_COMPANION_APP_DESCRIPTION);
+    }
+
+    /* Verifies Happy Path FastPairDiscoveryItemParcel. */
+    private static void ensureHappyPathAsExpected(FastPairDiscoveryItemParcel itemParcel) {
+        assertThat(itemParcel.actionUrl).isEqualTo(ACTION_URL);
+        assertThat(itemParcel.actionUrlType).isEqualTo(ACTION_URL_TYPE);
+        assertThat(itemParcel.appName).isEqualTo(APP_NAME);
+        assertThat(itemParcel.authenticationPublicKeySecp256r1)
+                .isEqualTo(AUTHENTICATION_PUBLIC_KEY_SEC_P256R1);
+        assertThat(itemParcel.description).isEqualTo(DESCRIPTION);
+        assertThat(itemParcel.deviceName).isEqualTo(DEVICE_NAME);
+        assertThat(itemParcel.displayUrl).isEqualTo(DISPLAY_URL);
+        assertThat(itemParcel.firstObservationTimestampMillis)
+                .isEqualTo(FIRST_OBSERVATION_TIMESTAMP_MILLIS);
+        assertThat(itemParcel.iconFifeUrl).isEqualTo(ICON_FIFE_URL);
+        assertThat(itemParcel.iconPng).isEqualTo(ICON_PNG);
+        assertThat(itemParcel.id).isEqualTo(ID);
+        assertThat(itemParcel.lastObservationTimestampMillis)
+                .isEqualTo(LAST_OBSERVATION_TIMESTAMP_MILLIS);
+        assertThat(itemParcel.macAddress).isEqualTo(MAC_ADDRESS);
+        assertThat(itemParcel.packageName).isEqualTo(PACKAGE_NAME);
+        assertThat(itemParcel.pendingAppInstallTimestampMillis)
+                .isEqualTo(PENDING_APP_INSTALL_TIMESTAMP_MILLIS);
+        assertThat(itemParcel.rssi).isEqualTo(RSSI);
+        assertThat(itemParcel.state).isEqualTo(STATE);
+        assertThat(itemParcel.title).isEqualTo(TITLE);
+        assertThat(itemParcel.triggerId).isEqualTo(TRIGGER_ID);
+        assertThat(itemParcel.txPower).isEqualTo(TX_POWER);
+    }
+
+    /* Verifies Happy Path FastPairDiscoveryItem. */
+    private static void ensureHappyPathAsExpected(FastPairDiscoveryItem item) {
+        assertThat(item.getActionUrl()).isEqualTo(ACTION_URL);
+        assertThat(item.getActionUrlType()).isEqualTo(ACTION_URL_TYPE);
+        assertThat(item.getAppName()).isEqualTo(APP_NAME);
+        assertThat(item.getAuthenticationPublicKeySecp256r1())
+                .isEqualTo(AUTHENTICATION_PUBLIC_KEY_SEC_P256R1);
+        assertThat(item.getDescription()).isEqualTo(DESCRIPTION);
+        assertThat(item.getDeviceName()).isEqualTo(DEVICE_NAME);
+        assertThat(item.getDisplayUrl()).isEqualTo(DISPLAY_URL);
+        assertThat(item.getFirstObservationTimestampMillis())
+                .isEqualTo(FIRST_OBSERVATION_TIMESTAMP_MILLIS);
+        assertThat(item.getIconFfeUrl()).isEqualTo(ICON_FIFE_URL);
+        assertThat(item.getIconPng()).isEqualTo(ICON_PNG);
+        assertThat(item.getId()).isEqualTo(ID);
+        assertThat(item.getLastObservationTimestampMillis())
+                .isEqualTo(LAST_OBSERVATION_TIMESTAMP_MILLIS);
+        assertThat(item.getMacAddress()).isEqualTo(MAC_ADDRESS);
+        assertThat(item.getPackageName()).isEqualTo(PACKAGE_NAME);
+        assertThat(item.getPendingAppInstallTimestampMillis())
+                .isEqualTo(PENDING_APP_INSTALL_TIMESTAMP_MILLIS);
+        assertThat(item.getRssi()).isEqualTo(RSSI);
+        assertThat(item.getState()).isEqualTo(STATE);
+        assertThat(item.getTitle()).isEqualTo(TITLE);
+        assertThat(item.getTriggerId()).isEqualTo(TRIGGER_ID);
+        assertThat(item.getTxPower()).isEqualTo(TX_POWER);
+    }
+
+    /* Verifies Happy Path EligibleAccountParcel[]. */
+    private static void ensureHappyPathAsExpected(FastPairEligibleAccountParcel[] accountsParcel) {
+        assertThat(accountsParcel).hasLength(ELIGIBLE_ACCOUNTS_NUM);
+
+        assertThat(accountsParcel[0].account).isEqualTo(ELIGIBLE_ACCOUNT_1);
+        assertThat(accountsParcel[0].optIn).isEqualTo(ELIGIBLE_ACCOUNT_1_OPT_IN);
+
+        assertThat(accountsParcel[1].account).isEqualTo(ELIGIBLE_ACCOUNT_2);
+        assertThat(accountsParcel[1].optIn).isEqualTo(ELIGIBLE_ACCOUNT_2_OPT_IN);
+    }
+}
diff --git a/nearby/tests/unit/src/android/nearby/FastPairDeviceTest.java b/nearby/tests/unit/src/android/nearby/FastPairDeviceTest.java
new file mode 100644
index 0000000..edda3c2
--- /dev/null
+++ b/nearby/tests/unit/src/android/nearby/FastPairDeviceTest.java
@@ -0,0 +1,100 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.nearby;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import android.os.Parcel;
+
+import org.junit.Before;
+import org.junit.Test;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class FastPairDeviceTest {
+    private static final String NAME = "name";
+    private static final byte[] DATA = new byte[] {0x01, 0x02};
+    private static final String MODEL_ID = "112233";
+    private static final int RSSI = -80;
+    private static final int TX_POWER = -10;
+    private static final String MAC_ADDRESS = "00:11:22:33:44:55";
+    private static List<Integer> sMediums = new ArrayList<Integer>(List.of(1));
+    private static FastPairDevice sDevice;
+
+
+    @Before
+    public void setup() {
+        sDevice = new FastPairDevice(NAME, sMediums, RSSI, TX_POWER, MODEL_ID, MAC_ADDRESS, DATA);
+    }
+
+    @Test
+    public void testParcelable() {
+        Parcel dest = Parcel.obtain();
+        sDevice.writeToParcel(dest, 0);
+        dest.setDataPosition(0);
+        FastPairDevice compareDevice = FastPairDevice.CREATOR.createFromParcel(dest);
+        assertThat(compareDevice.getName()).isEqualTo(NAME);
+        assertThat(compareDevice.getMediums()).isEqualTo(sMediums);
+        assertThat(compareDevice.getRssi()).isEqualTo(RSSI);
+        assertThat(compareDevice.getTxPower()).isEqualTo(TX_POWER);
+        assertThat(compareDevice.getModelId()).isEqualTo(MODEL_ID);
+        assertThat(compareDevice.getBluetoothAddress()).isEqualTo(MAC_ADDRESS);
+        assertThat(compareDevice.getData()).isEqualTo(DATA);
+        assertThat(compareDevice.equals(sDevice)).isTrue();
+        assertThat(compareDevice.hashCode()).isEqualTo(sDevice.hashCode());
+    }
+
+    @Test
+    public void describeContents() {
+        assertThat(sDevice.describeContents()).isEqualTo(0);
+    }
+
+    @Test
+    public void testToString() {
+        assertThat(sDevice.toString()).isEqualTo(
+                "FastPairDevice [name=name, medium={BLE} "
+                        + "rssi=-80 txPower=-10 "
+                        + "modelId=112233 bluetoothAddress=00:11:22:33:44:55]");
+    }
+
+    @Test
+    public void testCreatorNewArray() {
+        FastPairDevice[] fastPairDevices = FastPairDevice.CREATOR.newArray(2);
+        assertThat(fastPairDevices.length).isEqualTo(2);
+    }
+
+    @Test
+    public void testBuilder() {
+        FastPairDevice.Builder builder = new FastPairDevice.Builder();
+        FastPairDevice compareDevice = builder.setName(NAME)
+                .addMedium(1)
+                .setBluetoothAddress(MAC_ADDRESS)
+                .setRssi(RSSI)
+                .setTxPower(TX_POWER)
+                .setData(DATA)
+                .setModelId(MODEL_ID)
+                .build();
+        assertThat(compareDevice.getName()).isEqualTo(NAME);
+        assertThat(compareDevice.getMediums()).isEqualTo(sMediums);
+        assertThat(compareDevice.getRssi()).isEqualTo(RSSI);
+        assertThat(compareDevice.getTxPower()).isEqualTo(TX_POWER);
+        assertThat(compareDevice.getModelId()).isEqualTo(MODEL_ID);
+        assertThat(compareDevice.getBluetoothAddress()).isEqualTo(MAC_ADDRESS);
+        assertThat(compareDevice.getData()).isEqualTo(DATA);
+    }
+}
diff --git a/nearby/tests/unit/src/android/nearby/FastPairEligibleAccountTest.java b/nearby/tests/unit/src/android/nearby/FastPairEligibleAccountTest.java
new file mode 100644
index 0000000..da5a518
--- /dev/null
+++ b/nearby/tests/unit/src/android/nearby/FastPairEligibleAccountTest.java
@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.nearby;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import android.accounts.Account;
+
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+import androidx.test.filters.SdkSuppress;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+@RunWith(AndroidJUnit4.class)
+public class FastPairEligibleAccountTest {
+
+    private static final Account ACCOUNT = new Account("abc@google.com", "type1");
+    private static final Account ACCOUNT_NULL = null;
+
+    private static final boolean OPT_IN_TRUE = true;
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testSetGetFastPairEligibleAccountNotNull() {
+        FastPairEligibleAccount eligibleAccount =
+                genFastPairEligibleAccount(ACCOUNT, OPT_IN_TRUE);
+
+        assertThat(eligibleAccount.getAccount()).isEqualTo(ACCOUNT);
+        assertThat(eligibleAccount.isOptIn()).isEqualTo(OPT_IN_TRUE);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testSetGetFastPairEligibleAccountNull() {
+        FastPairEligibleAccount eligibleAccount =
+                genFastPairEligibleAccount(ACCOUNT_NULL, OPT_IN_TRUE);
+
+        assertThat(eligibleAccount.getAccount()).isEqualTo(ACCOUNT_NULL);
+        assertThat(eligibleAccount.isOptIn()).isEqualTo(OPT_IN_TRUE);
+    }
+
+    /* Generates FastPairEligibleAccount. */
+    private static FastPairEligibleAccount genFastPairEligibleAccount(
+            Account account, boolean optIn) {
+        FastPairEligibleAccount.Builder builder = new FastPairEligibleAccount.Builder();
+        builder.setAccount(account);
+        builder.setOptIn(optIn);
+
+        return builder.build();
+    }
+}
diff --git a/nearby/tests/unit/src/android/nearby/PairStatusMetadataTest.java b/nearby/tests/unit/src/android/nearby/PairStatusMetadataTest.java
new file mode 100644
index 0000000..7bc6519
--- /dev/null
+++ b/nearby/tests/unit/src/android/nearby/PairStatusMetadataTest.java
@@ -0,0 +1,105 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.nearby;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import android.os.Parcel;
+
+import org.junit.Test;
+
+public class PairStatusMetadataTest {
+    private static final int UNKNOWN = 1000;
+    private static final int SUCCESS = 1001;
+    private static final int FAIL = 1002;
+    private static final int DISMISS = 1003;
+
+    @Test
+    public void statusToString() {
+        assertThat(PairStatusMetadata.statusToString(UNKNOWN)).isEqualTo("UNKNOWN");
+        assertThat(PairStatusMetadata.statusToString(SUCCESS)).isEqualTo("SUCCESS");
+        assertThat(PairStatusMetadata.statusToString(FAIL)).isEqualTo("FAIL");
+        assertThat(PairStatusMetadata.statusToString(DISMISS)).isEqualTo("DISMISS");
+    }
+
+    @Test
+    public void getStatus() {
+        PairStatusMetadata pairStatusMetadata = new PairStatusMetadata(SUCCESS);
+        assertThat(pairStatusMetadata.getStatus()).isEqualTo(1001);
+        pairStatusMetadata = new PairStatusMetadata(FAIL);
+        assertThat(pairStatusMetadata.getStatus()).isEqualTo(1002);
+        pairStatusMetadata = new PairStatusMetadata(DISMISS);
+        assertThat(pairStatusMetadata.getStatus()).isEqualTo(1003);
+        pairStatusMetadata = new PairStatusMetadata(UNKNOWN);
+        assertThat(pairStatusMetadata.getStatus()).isEqualTo(1000);
+    }
+
+    @Test
+    public void testToString() {
+        PairStatusMetadata pairStatusMetadata = new PairStatusMetadata(SUCCESS);
+        assertThat(pairStatusMetadata.toString())
+                .isEqualTo("PairStatusMetadata[ status=SUCCESS]");
+        pairStatusMetadata = new PairStatusMetadata(FAIL);
+        assertThat(pairStatusMetadata.toString())
+                .isEqualTo("PairStatusMetadata[ status=FAIL]");
+        pairStatusMetadata = new PairStatusMetadata(DISMISS);
+        assertThat(pairStatusMetadata.toString())
+                .isEqualTo("PairStatusMetadata[ status=DISMISS]");
+        pairStatusMetadata = new PairStatusMetadata(UNKNOWN);
+        assertThat(pairStatusMetadata.toString())
+                .isEqualTo("PairStatusMetadata[ status=UNKNOWN]");
+    }
+
+    @Test
+    public void testEquals() {
+        PairStatusMetadata pairStatusMetadata = new PairStatusMetadata(SUCCESS);
+        PairStatusMetadata pairStatusMetadata1 = new PairStatusMetadata(SUCCESS);
+        PairStatusMetadata pairStatusMetadata2 = new PairStatusMetadata(UNKNOWN);
+        assertThat(pairStatusMetadata.equals(pairStatusMetadata1)).isTrue();
+        assertThat(pairStatusMetadata.equals(pairStatusMetadata2)).isFalse();
+        assertThat(pairStatusMetadata.hashCode()).isEqualTo(pairStatusMetadata1.hashCode());
+    }
+
+    @Test
+    public void testParcelable() {
+        PairStatusMetadata pairStatusMetadata = new PairStatusMetadata(SUCCESS);
+        Parcel dest = Parcel.obtain();
+        pairStatusMetadata.writeToParcel(dest, 0);
+        dest.setDataPosition(0);
+        PairStatusMetadata comparStatusMetadata =
+                PairStatusMetadata.CREATOR.createFromParcel(dest);
+        assertThat(pairStatusMetadata.equals(comparStatusMetadata)).isTrue();
+    }
+
+    @Test
+    public void testCreatorNewArray() {
+        PairStatusMetadata[] pairStatusMetadatas = PairStatusMetadata.CREATOR.newArray(2);
+        assertThat(pairStatusMetadatas.length).isEqualTo(2);
+    }
+
+    @Test
+    public void describeContents() {
+        PairStatusMetadata pairStatusMetadata = new PairStatusMetadata(SUCCESS);
+        assertThat(pairStatusMetadata.describeContents()).isEqualTo(0);
+    }
+
+    @Test
+    public void  getStability() {
+        PairStatusMetadata pairStatusMetadata = new PairStatusMetadata(SUCCESS);
+        assertThat(pairStatusMetadata.getStability()).isEqualTo(0);
+    }
+}
diff --git a/nearby/tests/unit/src/com/android/server/nearby/common/ble/BleFilterTest.java b/nearby/tests/unit/src/com/android/server/nearby/common/ble/BleFilterTest.java
index 1d3653b..c4a9729 100644
--- a/nearby/tests/unit/src/com/android/server/nearby/common/ble/BleFilterTest.java
+++ b/nearby/tests/unit/src/com/android/server/nearby/common/ble/BleFilterTest.java
@@ -20,7 +20,11 @@
 
 import static org.junit.Assert.fail;
 
+import android.bluetooth.BluetoothAdapter;
+import android.bluetooth.BluetoothAssignedNumbers;
 import android.bluetooth.BluetoothDevice;
+import android.bluetooth.le.ScanFilter;
+import android.os.Parcel;
 import android.os.ParcelUuid;
 import android.util.SparseArray;
 
@@ -44,6 +48,83 @@
     public static final ParcelUuid EDDYSTONE_SERVICE_DATA_PARCELUUID =
             ParcelUuid.fromString("0000FEAA-0000-1000-8000-00805F9B34FB");
 
+    private final BleFilter mEddystoneFilter = createEddystoneFilter();
+    private final BleFilter mEddystoneUidFilter = createEddystoneUidFilter();
+    private final BleFilter mEddystoneUrlFilter = createEddystoneUrlFilter();
+    private final BleFilter mEddystoneEidFilter = createEddystoneEidFilter();
+    private final BleFilter mIBeaconWithoutUuidFilter = createIBeaconWithoutUuidFilter();
+    private final BleFilter mIBeaconWithUuidFilter = createIBeaconWithUuidFilter();
+    private final BleFilter mChromecastFilter =
+            new BleFilter.Builder().setServiceUuid(
+                    new ParcelUuid(UUID.fromString("0000FEA0-0000-1000-8000-00805F9B34FB")))
+                    .build();
+    private final BleFilter mEddystoneWithDeviceNameFilter =
+            new BleFilter.Builder()
+                    .setServiceUuid(EDDYSTONE_SERVICE_DATA_PARCELUUID)
+                    .setDeviceName("BERT")
+                    .build();
+    private final BleFilter mEddystoneWithDeviceAddressFilter =
+            new BleFilter.Builder()
+                    .setServiceUuid(EDDYSTONE_SERVICE_DATA_PARCELUUID)
+                    .setDeviceAddress("00:11:22:33:AA:BB")
+                    .build();
+    private final BleFilter mServiceUuidWithMaskFilter1 =
+            new BleFilter.Builder()
+                    .setServiceUuid(
+                            new ParcelUuid(UUID.fromString("0000FEA0-0000-1000-8000-00805F9B34FB")),
+                            new ParcelUuid(UUID.fromString("0000000-0000-000-FFFF-FFFFFFFFFFFF")))
+                    .build();
+    private final BleFilter mServiceUuidWithMaskFilter2 =
+            new BleFilter.Builder()
+                    .setServiceUuid(
+                            new ParcelUuid(UUID.fromString("0000FEA0-0000-1000-8000-00805F9B34FB")),
+                            new ParcelUuid(UUID.fromString("FFFFFFF-FFFF-FFF-FFFF-FFFFFFFFFFFF")))
+                    .build();
+
+    private final BleFilter mSmartSetupFilter =
+            new BleFilter.Builder()
+                    .setManufacturerData(
+                            BluetoothAssignedNumbers.GOOGLE,
+                            new byte[] {0x00, 0x10},
+                            new byte[] {0x00, (byte) 0xFF})
+                    .build();
+    private final BleFilter mWearFilter =
+            new BleFilter.Builder()
+                    .setManufacturerData(
+                            BluetoothAssignedNumbers.GOOGLE,
+                            new byte[] {0x00, 0x00, 0x00},
+                            new byte[] {0x00, 0x00, (byte) 0xFF})
+                    .build();
+    private final BleFilter mFakeSmartSetupSubsetFilter =
+            new BleFilter.Builder()
+                    .setManufacturerData(
+                            BluetoothAssignedNumbers.GOOGLE,
+                            new byte[] {0x00, 0x10, 0x50},
+                            new byte[] {0x00, (byte) 0xFF, (byte) 0xFF})
+                    .build();
+    private final BleFilter mFakeSmartSetupNotSubsetFilter =
+            new BleFilter.Builder()
+                    .setManufacturerData(
+                            BluetoothAssignedNumbers.GOOGLE,
+                            new byte[] {0x00, 0x10, 0x50},
+                            new byte[] {0x00, (byte) 0x00, (byte) 0xFF})
+                    .build();
+
+    private final BleFilter mFakeFilter1 =
+            new BleFilter.Builder()
+                    .setServiceData(
+                            ParcelUuid.fromString("0000110B-0000-1000-8000-00805F9B34FB"),
+                            new byte[] {0x51, 0x64},
+                            new byte[] {0x00, (byte) 0xFF})
+                    .build();
+    private final BleFilter mFakeFilter2 =
+            new BleFilter.Builder()
+                    .setServiceData(
+                            ParcelUuid.fromString("0000110B-0000-1000-8000-00805F9B34FB"),
+                            new byte[] {0x51, 0x64, 0x34},
+                            new byte[] {0x00, (byte) 0xFF, (byte) 0xFF})
+                    .build();
+
     private ParcelUuid mServiceDataUuid;
     private BleSighting mBleSighting;
     private BleFilter.Builder mFilterBuilder;
@@ -229,6 +310,16 @@
     }
 
     @Test
+    public void serviceDataUuidNotInBleRecord() {
+        byte[] bleRecord = FastPairTestData.eir_1;
+        byte[] serviceData = {(byte) 0xe0, (byte) 0x00};
+
+        // Verify Service Data with 2-byte UUID, no data, and NOT in scan record
+        BleFilter filter = mFilterBuilder.setServiceData(mServiceDataUuid, serviceData).build();
+        assertThat(matches(filter, null, 0, bleRecord)).isFalse();
+    }
+
+    @Test
     public void serviceDataMask() {
         byte[] bleRecord = FastPairTestData.sd1;
         BleFilter filter;
@@ -263,6 +354,18 @@
         mFilterBuilder.setServiceData(mServiceDataUuid, serviceData, mask).build();
     }
 
+    @Test
+    public void serviceDataMaskNotInBleRecord() {
+        byte[] bleRecord = FastPairTestData.eir_1;
+        BleFilter filter;
+
+        // Verify matching partial manufacturer with data and mask
+        byte[] serviceData1 = {(byte) 0xe0, (byte) 0x00, (byte) 0x15};
+        byte[] mask1 = {(byte) 0xff, (byte) 0xff, (byte) 0xff};
+        filter = mFilterBuilder.setServiceData(mServiceDataUuid, serviceData1, mask1).build();
+        assertThat(matches(filter, null, 0, bleRecord)).isFalse();
+    }
+
 
     @Test
     public void deviceNameTest() {
@@ -280,12 +383,241 @@
         assertThat(matches(filter, null, 0, bleRecord)).isFalse();
     }
 
+    @Test
+    public void deviceNameNotInBleRecord() {
+        // Verify the name filter does not match
+        byte[] bleRecord = FastPairTestData.eir_1;
+        BleFilter filter = mFilterBuilder.setDeviceName("Pedometer").build();
+        assertThat(matches(filter, null, 0, bleRecord)).isFalse();
+    }
+
+    @Test
+    public void serviceUuid() {
+        byte[] bleRecord = FastPairTestData.eddystone_header_and_uuid;
+        ParcelUuid uuid = ParcelUuid.fromString("0000FEAA-0000-1000-8000-00805F9B34FB");
+
+        BleFilter filter = mFilterBuilder.setServiceUuid(uuid).build();
+        assertMatches(filter, null, 0, bleRecord);
+    }
+
+    @Test
+    public void serviceUuidNoMatch() {
+        // Verify the name filter does not match
+        byte[] bleRecord = FastPairTestData.eddystone_header_and_uuid;
+        ParcelUuid uuid = ParcelUuid.fromString("00001804-0000-1000-8000-000000000000");
+
+        BleFilter filter = mFilterBuilder.setServiceUuid(uuid).build();
+        assertThat(matches(filter, null, 0, bleRecord)).isFalse();
+    }
+
+    @Test
+    public void serviceUuidNotInBleRecord() {
+        // Verify the name filter does not match
+        byte[] bleRecord = FastPairTestData.eir_1;
+        ParcelUuid uuid = ParcelUuid.fromString("00001804-0000-1000-8000-000000000000");
+
+        BleFilter filter = mFilterBuilder.setServiceUuid(uuid).build();
+        assertThat(matches(filter, null, 0, bleRecord)).isFalse();
+    }
+
+    @Test
+    public void serviceUuidMask() {
+        byte[] bleRecord = FastPairTestData.eddystone_header_and_uuid;
+        ParcelUuid uuid = ParcelUuid.fromString("0000FEAA-0000-1000-8000-00805F9B34FB");
+        ParcelUuid mask = ParcelUuid.fromString("00000000-0000-0000-0000-FFFFFFFFFFFF");
+        BleFilter filter = mFilterBuilder.setServiceUuid(uuid, mask).build();
+        assertMatches(filter, null, 0, bleRecord);
+    }
+
+
+    @Test
+    public void macAddress() {
+        byte[] bleRecord = FastPairTestData.eddystone_header_and_uuid;
+        String macAddress = "00:11:22:33:AA:BB";
+        BluetoothAdapter adapter = BluetoothAdapter.getDefaultAdapter();
+
+        BluetoothDevice device = adapter.getRemoteDevice(macAddress);
+        BleFilter filter = mFilterBuilder.setDeviceAddress(macAddress).build();
+        assertMatches(filter, device, 0, bleRecord);
+    }
+
+    @Test
+    public void macAddressNoMatch() {
+        byte[] bleRecord = FastPairTestData.eddystone_header_and_uuid;
+        String macAddress = "00:11:22:33:AA:00";
+        BluetoothAdapter adapter = BluetoothAdapter.getDefaultAdapter();
+
+        BluetoothDevice device = adapter.getRemoteDevice("00:11:22:33:AA:BB");
+        BleFilter filter = mFilterBuilder.setDeviceAddress(macAddress).build();
+        assertThat(matches(filter, device, 0, bleRecord)).isFalse();
+    }
+
+    @Test
+    public void eddystoneIsSuperset() {
+        // Verify eddystone subtypes pass.
+        assertThat(mEddystoneFilter.isSuperset(mEddystoneFilter)).isTrue();
+        assertThat(mEddystoneUidFilter.isSuperset(mEddystoneUidFilter)).isTrue();
+        assertThat(mEddystoneFilter.isSuperset(mEddystoneUidFilter)).isTrue();
+        assertThat(mEddystoneFilter.isSuperset(mEddystoneEidFilter)).isTrue();
+        assertThat(mEddystoneFilter.isSuperset(mEddystoneUrlFilter)).isTrue();
+
+        // Non-eddystone beacon filters should never be supersets.
+        assertThat(mEddystoneFilter.isSuperset(mIBeaconWithoutUuidFilter)).isFalse();
+        assertThat(mEddystoneFilter.isSuperset(mWearFilter)).isFalse();
+        assertThat(mEddystoneFilter.isSuperset(mSmartSetupFilter)).isFalse();
+        assertThat(mEddystoneFilter.isSuperset(mChromecastFilter)).isFalse();
+        assertThat(mEddystoneFilter.isSuperset(mFakeFilter1)).isFalse();
+        assertThat(mEddystoneFilter.isSuperset(mFakeFilter2)).isFalse();
+
+        assertThat(mEddystoneUidFilter.isSuperset(mWearFilter)).isFalse();
+        assertThat(mEddystoneUidFilter.isSuperset(mSmartSetupFilter)).isFalse();
+        assertThat(mEddystoneUidFilter.isSuperset(mChromecastFilter)).isFalse();
+        assertThat(mEddystoneUidFilter.isSuperset(mFakeFilter1)).isFalse();
+        assertThat(mEddystoneUidFilter.isSuperset(mFakeFilter2)).isFalse();
+    }
+
+    @Test
+    public void iBeaconIsSuperset() {
+        // Verify that an iBeacon filter is a superset of itself and any filters that specify UUIDs.
+        assertThat(mIBeaconWithoutUuidFilter.isSuperset(mIBeaconWithoutUuidFilter)).isTrue();
+        assertThat(mIBeaconWithoutUuidFilter.isSuperset(mIBeaconWithUuidFilter)).isTrue();
+
+        // Non-iBeacon filters should never be supersets.
+        assertThat(mIBeaconWithoutUuidFilter.isSuperset(mEddystoneEidFilter)).isFalse();
+        assertThat(mIBeaconWithoutUuidFilter.isSuperset(mEddystoneUrlFilter)).isFalse();
+        assertThat(mIBeaconWithoutUuidFilter.isSuperset(mEddystoneUidFilter)).isFalse();
+        assertThat(mIBeaconWithoutUuidFilter.isSuperset(mWearFilter)).isFalse();
+        assertThat(mIBeaconWithoutUuidFilter.isSuperset(mSmartSetupFilter)).isFalse();
+        assertThat(mIBeaconWithoutUuidFilter.isSuperset(mChromecastFilter)).isFalse();
+        assertThat(mIBeaconWithoutUuidFilter.isSuperset(mFakeFilter1)).isFalse();
+        assertThat(mIBeaconWithoutUuidFilter.isSuperset(mFakeFilter2)).isFalse();
+    }
+
+    @Test
+    public void mixedFilterIsSuperset() {
+        // Compare service data vs manufacturer data filters to verify we detect supersets
+        // correctly in filters that aren't for iBeacon and Eddystone.
+        assertThat(mWearFilter.isSuperset(mIBeaconWithoutUuidFilter)).isFalse();
+        assertThat(mSmartSetupFilter.isSuperset(mIBeaconWithoutUuidFilter)).isFalse();
+        assertThat(mChromecastFilter.isSuperset(mIBeaconWithoutUuidFilter)).isFalse();
+
+        assertThat(mWearFilter.isSuperset(mEddystoneFilter)).isFalse();
+        assertThat(mSmartSetupFilter.isSuperset(mEddystoneFilter)).isFalse();
+        assertThat(mChromecastFilter.isSuperset(mEddystoneFilter)).isFalse();
+
+        assertThat(mWearFilter.isSuperset(mEddystoneUidFilter)).isFalse();
+        assertThat(mSmartSetupFilter.isSuperset(mEddystoneUidFilter)).isFalse();
+        assertThat(mChromecastFilter.isSuperset(mEddystoneUidFilter)).isFalse();
+
+        assertThat(mWearFilter.isSuperset(mEddystoneEidFilter)).isFalse();
+        assertThat(mSmartSetupFilter.isSuperset(mEddystoneEidFilter)).isFalse();
+        assertThat(mChromecastFilter.isSuperset(mEddystoneEidFilter)).isFalse();
+
+        assertThat(mWearFilter.isSuperset(mEddystoneUrlFilter)).isFalse();
+        assertThat(mSmartSetupFilter.isSuperset(mEddystoneUrlFilter)).isFalse();
+        assertThat(mChromecastFilter.isSuperset(mEddystoneUrlFilter)).isFalse();
+
+        assertThat(mWearFilter.isSuperset(mIBeaconWithUuidFilter)).isFalse();
+        assertThat(mSmartSetupFilter.isSuperset(mIBeaconWithUuidFilter)).isFalse();
+        assertThat(mChromecastFilter.isSuperset(mIBeaconWithUuidFilter)).isFalse();
+
+        assertThat(mWearFilter.isSuperset(mChromecastFilter)).isFalse();
+        assertThat(mSmartSetupFilter.isSuperset(mChromecastFilter)).isFalse();
+        assertThat(mSmartSetupFilter.isSuperset(mWearFilter)).isFalse();
+        assertThat(mChromecastFilter.isSuperset(mWearFilter)).isFalse();
+
+        assertThat(mFakeFilter1.isSuperset(mFakeFilter2)).isTrue();
+        assertThat(mFakeFilter2.isSuperset(mFakeFilter1)).isFalse();
+        assertThat(mSmartSetupFilter.isSuperset(mFakeSmartSetupSubsetFilter)).isTrue();
+        assertThat(mSmartSetupFilter.isSuperset(mFakeSmartSetupNotSubsetFilter)).isFalse();
+
+        assertThat(mEddystoneFilter.isSuperset(mEddystoneWithDeviceNameFilter)).isTrue();
+        assertThat(mEddystoneFilter.isSuperset(mEddystoneWithDeviceAddressFilter)).isTrue();
+        assertThat(mEddystoneWithDeviceAddressFilter.isSuperset(mEddystoneFilter)).isFalse();
+
+        assertThat(mChromecastFilter.isSuperset(mServiceUuidWithMaskFilter1)).isTrue();
+        assertThat(mServiceUuidWithMaskFilter2.isSuperset(mServiceUuidWithMaskFilter1)).isFalse();
+        assertThat(mServiceUuidWithMaskFilter1.isSuperset(mServiceUuidWithMaskFilter2)).isTrue();
+        assertThat(mEddystoneFilter.isSuperset(mServiceUuidWithMaskFilter1)).isFalse();
+    }
+
+    @Test
+    public void toOsFilter_getTheSameFilterParameter() {
+        BleFilter nearbyFilter = createTestFilter();
+        ScanFilter osFilter = nearbyFilter.toOsFilter();
+        assertFilterValuesEqual(nearbyFilter, osFilter);
+    }
+
+    @Test
+    public void describeContents() {
+        BleFilter nearbyFilter = createTestFilter();
+        assertThat(nearbyFilter.describeContents()).isEqualTo(0);
+    }
+
+    @Test
+    public void testHashCode() {
+        BleFilter nearbyFilter = createTestFilter();
+        BleFilter compareFilter = new BleFilter("BERT", "00:11:22:33:AA:BB",
+                new ParcelUuid(UUID.fromString("0000FEA0-0000-1000-8000-00805F9B34FB")),
+                new ParcelUuid(UUID.fromString("FFFFFFF-FFFF-FFF-FFFF-FFFFFFFFFFFF")),
+                ParcelUuid.fromString("0000110B-0000-1000-8000-00805F9B34FB"),
+                new byte[] {0x51, 0x64}, new byte[] {0x00, (byte) 0xFF},
+                BluetoothAssignedNumbers.GOOGLE, new byte[] {0x00, 0x10},
+                new byte[] {0x00, (byte) 0xFF});
+        assertThat(nearbyFilter.hashCode()).isEqualTo(compareFilter.hashCode());
+    }
+
+    @Test
+    public void testToString() {
+        BleFilter nearbyFilter = createTestFilter();
+        assertThat(nearbyFilter.toString()).isEqualTo("BleFilter [deviceName=BERT,"
+                + " deviceAddress=00:11:22:33:AA:BB, uuid=0000fea0-0000-1000-8000-00805f9b34fb,"
+                + " uuidMask=0fffffff-ffff-0fff-ffff-ffffffffffff,"
+                + " serviceDataUuid=0000110b-0000-1000-8000-00805f9b34fb,"
+                + " serviceData=[81, 100], serviceDataMask=[0, -1],"
+                + " manufacturerId=224, manufacturerData=[0, 16], manufacturerDataMask=[0, -1]]");
+    }
+
+    @Test
+    public void testParcel() {
+        BleFilter nearbyFilter = createTestFilter();
+        Parcel parcel = Parcel.obtain();
+        nearbyFilter.writeToParcel(parcel, 0);
+        parcel.setDataPosition(0);
+        BleFilter compareFilter = BleFilter.CREATOR.createFromParcel(
+                parcel);
+        parcel.recycle();
+        assertThat(compareFilter.getDeviceName()).isEqualTo("BERT");
+    }
+
+    @Test
+    public void testCreatorNewArray() {
+        BleFilter[] nearbyFilters  = BleFilter.CREATOR.newArray(2);
+        assertThat(nearbyFilters.length).isEqualTo(2);
+    }
+
     private static boolean matches(
             BleFilter filter, BluetoothDevice device, int rssi, byte[] bleRecord) {
         return filter.matches(new BleSighting(device,
                 bleRecord, rssi, 0 /* timestampNanos */));
     }
 
+    private static void assertFilterValuesEqual(BleFilter nearbyFilter, ScanFilter osFilter) {
+        assertThat(osFilter.getDeviceAddress()).isEqualTo(nearbyFilter.getDeviceAddress());
+        assertThat(osFilter.getDeviceName()).isEqualTo(nearbyFilter.getDeviceName());
+
+        assertThat(osFilter.getManufacturerData()).isEqualTo(nearbyFilter.getManufacturerData());
+        assertThat(osFilter.getManufacturerDataMask())
+                .isEqualTo(nearbyFilter.getManufacturerDataMask());
+        assertThat(osFilter.getManufacturerId()).isEqualTo(nearbyFilter.getManufacturerId());
+
+        assertThat(osFilter.getServiceData()).isEqualTo(nearbyFilter.getServiceData());
+        assertThat(osFilter.getServiceDataMask()).isEqualTo(nearbyFilter.getServiceDataMask());
+        assertThat(osFilter.getServiceDataUuid()).isEqualTo(nearbyFilter.getServiceDataUuid());
+
+        assertThat(osFilter.getServiceUuid()).isEqualTo(nearbyFilter.getServiceUuid());
+        assertThat(osFilter.getServiceUuidMask()).isEqualTo(nearbyFilter.getServiceUuidMask());
+    }
 
     private static void assertMatches(
             BleFilter filter, BluetoothDevice device, int rssi, byte[] bleRecordBytes) {
@@ -325,10 +657,10 @@
 
         // UUID match.
         if (filter.getServiceUuid() != null
-                && !matchesServiceUuids(filter.getServiceUuid(), filter.getServiceUuidMask(),
-                bleRecord.getServiceUuids())) {
-            fail("The filter specifies a service UUID but it doesn't match "
-                    + "what's in the scan record");
+                && !matchesServiceUuids(filter.getServiceUuid(),
+                filter.getServiceUuidMask(), bleRecord.getServiceUuids())) {
+            fail("The filter specifies a service UUID "
+                    + "but it doesn't match what's in the scan record");
         }
 
         // Service data match
@@ -401,6 +733,95 @@
         }
     }
 
+    private static String byteString(Map<ParcelUuid, byte[]> bytesMap) {
+        StringBuilder builder = new StringBuilder();
+        for (Map.Entry<ParcelUuid, byte[]> entry : bytesMap.entrySet()) {
+            builder.append(builder.toString().isEmpty() ? "  " : "\n  ");
+            builder.append(entry.getKey().toString());
+            builder.append(" --> ");
+            builder.append(byteString(entry.getValue()));
+        }
+        return builder.toString();
+    }
+
+    private static String byteString(SparseArray<byte[]> bytesArray) {
+        StringBuilder builder = new StringBuilder();
+        for (int i = 0; i < bytesArray.size(); i++) {
+            builder.append(builder.toString().isEmpty() ? "  " : "\n  ");
+            builder.append(byteString(bytesArray.valueAt(i)));
+        }
+        return builder.toString();
+    }
+
+    private static BleFilter createTestFilter() {
+        BleFilter.Builder builder = new BleFilter.Builder();
+        builder
+                .setServiceUuid(
+                        new ParcelUuid(UUID.fromString("0000FEA0-0000-1000-8000-00805F9B34FB")),
+                        new ParcelUuid(UUID.fromString("FFFFFFF-FFFF-FFF-FFFF-FFFFFFFFFFFF")))
+                .setDeviceAddress("00:11:22:33:AA:BB")
+                .setDeviceName("BERT")
+                .setManufacturerData(
+                        BluetoothAssignedNumbers.GOOGLE,
+                        new byte[] {0x00, 0x10},
+                        new byte[] {0x00, (byte) 0xFF})
+                .setServiceData(
+                        ParcelUuid.fromString("0000110B-0000-1000-8000-00805F9B34FB"),
+                        new byte[] {0x51, 0x64},
+                        new byte[] {0x00, (byte) 0xFF});
+        return builder.build();
+    }
+
+    // ref to beacon.decode.BeaconFilterBuilder.eddystoneFilter()
+    private static BleFilter createEddystoneFilter() {
+        return new BleFilter.Builder().setServiceUuid(EDDYSTONE_SERVICE_DATA_PARCELUUID).build();
+    }
+    // ref to beacon.decode.BeaconFilterBuilder.eddystoneUidFilter()
+    private static BleFilter createEddystoneUidFilter() {
+        return new BleFilter.Builder()
+                .setServiceUuid(EDDYSTONE_SERVICE_DATA_PARCELUUID)
+                .setServiceData(
+                        EDDYSTONE_SERVICE_DATA_PARCELUUID, new byte[] {(short) 0x00},
+                        new byte[] {(byte) 0xf0})
+                .build();
+    }
+
+    // ref to beacon.decode.BeaconFilterBuilder.eddystoneUrlFilter()
+    private static BleFilter createEddystoneUrlFilter() {
+        return new BleFilter.Builder()
+                .setServiceUuid(EDDYSTONE_SERVICE_DATA_PARCELUUID)
+                .setServiceData(
+                        EDDYSTONE_SERVICE_DATA_PARCELUUID,
+                        new byte[] {(short) 0x10}, new byte[] {(byte) 0xf0})
+                .build();
+    }
+
+    // ref to beacon.decode.BeaconFilterBuilder.eddystoneEidFilter()
+    private static BleFilter createEddystoneEidFilter() {
+        return new BleFilter.Builder()
+                .setServiceUuid(EDDYSTONE_SERVICE_DATA_PARCELUUID)
+                .setServiceData(
+                        EDDYSTONE_SERVICE_DATA_PARCELUUID,
+                        new byte[] {(short) 0x30}, new byte[] {(byte) 0xf0})
+                .build();
+    }
+
+    // ref to beacon.decode.BeaconFilterBuilder.iBeaconWithoutUuidFilter()
+    private static BleFilter createIBeaconWithoutUuidFilter() {
+        byte[] data = {(byte) 0x02, (byte) 0x15};
+        byte[] mask = {(byte) 0xff, (byte) 0xff};
+
+        return new BleFilter.Builder().setManufacturerData((short) 0x004C, data, mask).build();
+    }
+
+    // ref to beacon.decode.BeaconFilterBuilder.iBeaconWithUuidFilter()
+    private static BleFilter createIBeaconWithUuidFilter() {
+        byte[] data = getFilterData(ParcelUuid.fromString("0000FEAA-0000-1000-8000-00805F9B34FB"));
+        byte[] mask = getFilterMask(ParcelUuid.fromString("0000FEAA-0000-1000-8000-00805F9B34FB"));
+
+        return new BleFilter.Builder().setManufacturerData((short) 0x004C, data, mask).build();
+    }
+
     // Ref to beacon.decode.AppleBeaconDecoder.getFilterData
     private static byte[] getFilterData(ParcelUuid uuid) {
         byte[] data = new byte[18];
@@ -418,6 +839,20 @@
         return data;
     }
 
+    // Ref to beacon.decode.AppleBeaconDecoder.getFilterMask
+    private static byte[] getFilterMask(ParcelUuid uuid) {
+        byte[] mask = new byte[18];
+        mask[0] = (byte) 0xff;
+        mask[1] = (byte) 0xff;
+        // Check if UUID is needed in data
+        if (uuid != null) {
+            for (int i = 0; i < 16; i++) {
+                mask[i + 2] = (byte) 0xff;
+            }
+        }
+        return mask;
+    }
+
     // Ref to beacon.decode.AppleBeaconDecoder.uuidToByteArray
     private static byte[] uuidToByteArray(ParcelUuid uuid) {
         ByteBuffer bb = ByteBuffer.wrap(new byte[16]);
@@ -453,24 +888,4 @@
         return ((uuid.getMostSignificantBits() & mask.getMostSignificantBits())
                 == (data.getMostSignificantBits() & mask.getMostSignificantBits()));
     }
-
-    private static String byteString(Map<ParcelUuid, byte[]> bytesMap) {
-        StringBuilder builder = new StringBuilder();
-        for (Map.Entry<ParcelUuid, byte[]> entry : bytesMap.entrySet()) {
-            builder.append(builder.toString().isEmpty() ? "  " : "\n  ");
-            builder.append(entry.getKey().toString());
-            builder.append(" --> ");
-            builder.append(byteString(entry.getValue()));
-        }
-        return builder.toString();
-    }
-
-    private static String byteString(SparseArray<byte[]> bytesArray) {
-        StringBuilder builder = new StringBuilder();
-        for (int i = 0; i < bytesArray.size(); i++) {
-            builder.append(builder.toString().isEmpty() ? "  " : "\n  ");
-            builder.append(byteString(bytesArray.valueAt(i)));
-        }
-        return builder.toString();
-    }
 }
diff --git a/nearby/tests/unit/src/com/android/server/nearby/common/ble/BleRecordTest.java b/nearby/tests/unit/src/com/android/server/nearby/common/ble/BleRecordTest.java
index 5da98e2..3f9a259 100644
--- a/nearby/tests/unit/src/com/android/server/nearby/common/ble/BleRecordTest.java
+++ b/nearby/tests/unit/src/com/android/server/nearby/common/ble/BleRecordTest.java
@@ -34,6 +34,9 @@
 
 import static com.google.common.truth.Truth.assertThat;
 
+import android.os.ParcelUuid;
+import android.util.SparseArray;
+
 import androidx.test.filters.SdkSuppress;
 
 import org.junit.Test;
@@ -238,7 +241,6 @@
         BleRecord record = BleRecord.parseFromBytes(BEACON);
         BleRecord record2 = BleRecord.parseFromBytes(SAME_BEACON);
 
-
         assertThat(record).isEqualTo(record2);
 
         // Different items.
@@ -246,5 +248,48 @@
         assertThat(record).isNotEqualTo(record2);
         assertThat(record.hashCode()).isNotEqualTo(record2.hashCode());
     }
+
+    @Test
+    public void testFields() {
+        BleRecord record = BleRecord.parseFromBytes(BEACON);
+        assertThat(byteString(record.getManufacturerSpecificData()))
+                .isEqualTo("  0215F7826DA64FA24E988024BC5B71E0893E44D02522B3");
+        assertThat(
+                byteString(record.getServiceData(
+                        ParcelUuid.fromString("000000E0-0000-1000-8000-00805F9B34FB"))))
+                .isEqualTo("[null]");
+        assertThat(record.getTxPowerLevel()).isEqualTo(-12);
+        assertThat(record.toString()).isEqualTo(
+                "BleRecord [advertiseFlags=6, serviceUuids=[], "
+                        + "manufacturerSpecificData={76=[2, 21, -9, -126, 109, -90, 79, -94, 78,"
+                        + " -104, -128, 36, -68, 91, 113, -32, -119, 62, 68, -48, 37, 34, -77]},"
+                        + " serviceData={0000d00d-0000-1000-8000-00805f9b34fb"
+                        + "=[116, 109, 77, 107, 50, 54, 100]},"
+                        + " txPowerLevel=-12, deviceName=Kontakt]");
+    }
+
+    private static String byteString(SparseArray<byte[]> bytesArray) {
+        StringBuilder builder = new StringBuilder();
+        for (int i = 0; i < bytesArray.size(); i++) {
+            builder.append(builder.toString().isEmpty() ? "  " : "\n  ");
+            builder.append(byteString(bytesArray.valueAt(i)));
+        }
+        return builder.toString();
+    }
+
+    private static String byteString(byte[] bytes) {
+        if (bytes == null) {
+            return "[null]";
+        } else {
+            final char[] hexArray = "0123456789ABCDEF".toCharArray();
+            char[] hexChars = new char[bytes.length * 2];
+            for (int i = 0; i < bytes.length; i++) {
+                int v = bytes[i] & 0xFF;
+                hexChars[i * 2] = hexArray[v >>> 4];
+                hexChars[i * 2 + 1] = hexArray[v & 0x0F];
+            }
+            return new String(hexChars);
+        }
+    }
 }
 
diff --git a/nearby/tests/unit/src/com/android/server/nearby/common/ble/BleSightingTest.java b/nearby/tests/unit/src/com/android/server/nearby/common/ble/BleSightingTest.java
new file mode 100644
index 0000000..d259851
--- /dev/null
+++ b/nearby/tests/unit/src/com/android/server/nearby/common/ble/BleSightingTest.java
@@ -0,0 +1,155 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.nearby.common.ble;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static java.nio.charset.StandardCharsets.UTF_8;
+
+import android.bluetooth.BluetoothAdapter;
+import android.bluetooth.BluetoothDevice;
+import android.os.Parcel;
+
+import org.junit.Test;
+
+import java.util.concurrent.TimeUnit;
+
+/** Test for Bluetooth LE {@link BleSighting}. */
+public class BleSightingTest {
+    private static final String DEVICE_NAME = "device1";
+    private static final String OTHER_DEVICE_NAME = "device2";
+    private static final long TIME_EPOCH_MILLIS = 123456;
+    private static final long OTHER_TIME_EPOCH_MILLIS = 456789;
+    private static final int RSSI = 1;
+    private static final int OTHER_RSSI = 2;
+
+    private final BluetoothDevice mBluetoothDevice1 =
+            BluetoothAdapter.getDefaultAdapter().getRemoteDevice("00:11:22:33:44:55");
+    private final BluetoothDevice mBluetoothDevice2 =
+            BluetoothAdapter.getDefaultAdapter().getRemoteDevice("AA:BB:CC:DD:EE:FF");
+
+
+    @Test
+    public void testEquals() {
+        BleSighting sighting =
+                buildBleSighting(mBluetoothDevice1, DEVICE_NAME, TIME_EPOCH_MILLIS, RSSI);
+        BleSighting sighting2 =
+                buildBleSighting(mBluetoothDevice1, DEVICE_NAME, TIME_EPOCH_MILLIS, RSSI);
+        assertThat(sighting.equals(sighting2)).isTrue();
+        assertThat(sighting2.equals(sighting)).isTrue();
+        assertThat(sighting.hashCode()).isEqualTo(sighting2.hashCode());
+
+        // Transitive property.
+        BleSighting sighting3 =
+                buildBleSighting(mBluetoothDevice1, DEVICE_NAME, TIME_EPOCH_MILLIS, RSSI);
+        assertThat(sighting2.equals(sighting3)).isTrue();
+        assertThat(sighting.equals(sighting3)).isTrue();
+
+        // Set different values for each field, one at a time.
+        sighting2 = buildBleSighting(mBluetoothDevice2, DEVICE_NAME, TIME_EPOCH_MILLIS, RSSI);
+        assertSightingsNotEquals(sighting, sighting2);
+
+        sighting2 = buildBleSighting(mBluetoothDevice1, OTHER_DEVICE_NAME, TIME_EPOCH_MILLIS, RSSI);
+        assertSightingsNotEquals(sighting, sighting2);
+
+        sighting2 = buildBleSighting(mBluetoothDevice1, DEVICE_NAME, OTHER_TIME_EPOCH_MILLIS, RSSI);
+        assertSightingsNotEquals(sighting, sighting2);
+
+        sighting2 = buildBleSighting(mBluetoothDevice1, DEVICE_NAME, TIME_EPOCH_MILLIS, OTHER_RSSI);
+        assertSightingsNotEquals(sighting, sighting2);
+    }
+
+    @Test
+    public void getNormalizedRSSI_usingNearbyRssiOffset_getCorrectValue() {
+        BleSighting sighting =
+                buildBleSighting(mBluetoothDevice1, DEVICE_NAME, TIME_EPOCH_MILLIS, RSSI);
+
+        int defaultRssiOffset = 3;
+        assertThat(sighting.getNormalizedRSSI()).isEqualTo(RSSI + defaultRssiOffset);
+    }
+
+    @Test
+    public void testFields() {
+        BleSighting sighting =
+                buildBleSighting(mBluetoothDevice1, DEVICE_NAME, TIME_EPOCH_MILLIS, RSSI);
+        assertThat(byteString(sighting.getBleRecordBytes()))
+                .isEqualTo("080964657669636531");
+        assertThat(sighting.getRssi()).isEqualTo(RSSI);
+        assertThat(sighting.getTimestampMillis()).isEqualTo(TIME_EPOCH_MILLIS);
+        assertThat(sighting.getTimestampNanos())
+                .isEqualTo(TimeUnit.MILLISECONDS.toNanos(TIME_EPOCH_MILLIS));
+        assertThat(sighting.toString()).isEqualTo(
+                "BleSighting{device=00:11:22:33:44:55,"
+                        + " bleRecord=BleRecord [advertiseFlags=-1,"
+                        + " serviceUuids=[],"
+                        + " manufacturerSpecificData={}, serviceData={},"
+                        + " txPowerLevel=-2147483648,"
+                        + " deviceName=device1],"
+                        + " rssi=1,"
+                        + " timestampNanos=123456000000}");
+    }
+
+    @Test
+    public void testParcelable() {
+        BleSighting sighting =
+                buildBleSighting(mBluetoothDevice1, DEVICE_NAME, TIME_EPOCH_MILLIS, RSSI);
+        Parcel dest = Parcel.obtain();
+        sighting.writeToParcel(dest, 0);
+        dest.setDataPosition(0);
+        assertThat(sighting.getRssi()).isEqualTo(RSSI);
+    }
+
+    @Test
+    public void testCreatorNewArray() {
+        BleSighting[]  sightings =
+                BleSighting.CREATOR.newArray(2);
+        assertThat(sightings.length).isEqualTo(2);
+    }
+
+    private static String byteString(byte[] bytes) {
+        if (bytes == null) {
+            return "[null]";
+        } else {
+            final char[] hexArray = "0123456789ABCDEF".toCharArray();
+            char[] hexChars = new char[bytes.length * 2];
+            for (int i = 0; i < bytes.length; i++) {
+                int v = bytes[i] & 0xFF;
+                hexChars[i * 2] = hexArray[v >>> 4];
+                hexChars[i * 2 + 1] = hexArray[v & 0x0F];
+            }
+            return new String(hexChars);
+        }
+    }
+
+        /** Builds a BleSighting instance which will correctly match filters by device name. */
+    private static BleSighting buildBleSighting(
+            BluetoothDevice bluetoothDevice, String deviceName, long timeEpochMillis, int rssi) {
+        byte[] nameBytes = deviceName.getBytes(UTF_8);
+        byte[] bleRecordBytes = new byte[nameBytes.length + 2];
+        bleRecordBytes[0] = (byte) (nameBytes.length + 1);
+        bleRecordBytes[1] = 0x09; // Value of private BleRecord.DATA_TYPE_LOCAL_NAME_COMPLETE;
+        System.arraycopy(nameBytes, 0, bleRecordBytes, 2, nameBytes.length);
+
+        return new BleSighting(bluetoothDevice, bleRecordBytes,
+                rssi, TimeUnit.MILLISECONDS.toNanos(timeEpochMillis));
+    }
+
+    private static void assertSightingsNotEquals(BleSighting sighting1, BleSighting sighting2) {
+        assertThat(sighting1.equals(sighting2)).isFalse();
+        assertThat(sighting1.hashCode()).isNotEqualTo(sighting2.hashCode());
+    }
+}
diff --git a/nearby/tests/unit/src/com/android/server/nearby/common/ble/decode/BeaconDecoderTest.java b/nearby/tests/unit/src/com/android/server/nearby/common/ble/decode/BeaconDecoderTest.java
new file mode 100644
index 0000000..9a9181d
--- /dev/null
+++ b/nearby/tests/unit/src/com/android/server/nearby/common/ble/decode/BeaconDecoderTest.java
@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.nearby.common.ble.decode;
+
+import static com.android.server.nearby.common.ble.BleRecord.parseFromBytes;
+import static com.android.server.nearby.common.ble.testing.FastPairTestData.getFastPairRecord;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import org.junit.Test;
+
+public class BeaconDecoderTest {
+    private BeaconDecoder mBeaconDecoder = new FastPairDecoder();;
+
+    @Test
+    public void testFields() {
+        assertThat(mBeaconDecoder.getTelemetry(parseFromBytes(getFastPairRecord()))).isNull();
+        assertThat(mBeaconDecoder.getUrl(parseFromBytes(getFastPairRecord()))).isNull();
+        assertThat(mBeaconDecoder.supportsBeaconIdAndTxPower(parseFromBytes(getFastPairRecord())))
+                .isTrue();
+        assertThat(mBeaconDecoder.supportsTxPower()).isTrue();
+    }
+}
diff --git a/nearby/tests/unit/src/com/android/server/nearby/common/ble/decode/FastPairDecoderTest.java b/nearby/tests/unit/src/com/android/server/nearby/common/ble/decode/FastPairDecoderTest.java
index 1ad04f8..6552699 100644
--- a/nearby/tests/unit/src/com/android/server/nearby/common/ble/decode/FastPairDecoderTest.java
+++ b/nearby/tests/unit/src/com/android/server/nearby/common/ble/decode/FastPairDecoderTest.java
@@ -17,15 +17,23 @@
 package com.android.server.nearby.common.ble.decode;
 
 import static com.android.server.nearby.common.ble.BleRecord.parseFromBytes;
+import static com.android.server.nearby.common.ble.testing.FastPairTestData.DEVICE_ADDRESS;
 import static com.android.server.nearby.common.ble.testing.FastPairTestData.FAST_PAIR_MODEL_ID;
+import static com.android.server.nearby.common.ble.testing.FastPairTestData.FAST_PAIR_SHARED_ACCOUNT_KEY_RECORD;
+import static com.android.server.nearby.common.ble.testing.FastPairTestData.RSSI;
 import static com.android.server.nearby.common.ble.testing.FastPairTestData.getFastPairRecord;
 import static com.android.server.nearby.common.ble.testing.FastPairTestData.newFastPairRecord;
 
 import static com.google.common.truth.Truth.assertThat;
 
+import android.bluetooth.BluetoothAdapter;
+import android.bluetooth.BluetoothDevice;
+
 import androidx.test.ext.junit.runners.AndroidJUnit4;
 
 import com.android.server.nearby.common.ble.BleRecord;
+import com.android.server.nearby.common.ble.BleSighting;
+import com.android.server.nearby.common.ble.testing.FastPairTestData;
 import com.android.server.nearby.util.Hex;
 
 import com.google.common.primitives.Bytes;
@@ -34,12 +42,13 @@
 import org.junit.runner.RunWith;
 
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.List;
+import java.util.concurrent.TimeUnit;
 
 @RunWith(AndroidJUnit4.class)
 public class FastPairDecoderTest {
     private static final String LONG_MODEL_ID = "1122334455667788";
-    private final FastPairDecoder mDecoder = new FastPairDecoder();
     // Bits 3-6 are model ID length bits = 0b1000 = 8
     private static final byte LONG_MODEL_ID_HEADER = 0b00010000;
     private static final String PADDED_LONG_MODEL_ID = "00001111";
@@ -49,74 +58,239 @@
     private static final byte MODEL_ID_HEADER = 0b00000110;
     private static final String MODEL_ID = "112233";
     private static final byte BLOOM_FILTER_HEADER = 0b01100000;
+    private static final byte BLOOM_FILTER_NO_NOTIFICATION_HEADER = 0b01100010;
     private static final String BLOOM_FILTER = "112233445566";
+    private static final byte LONG_BLOOM_FILTER_HEADER = (byte) 0b10100000;
+    private static final String LONG_BLOOM_FILTER = "00112233445566778899";
     private static final byte BLOOM_FILTER_SALT_HEADER = 0b00010001;
     private static final String BLOOM_FILTER_SALT = "01";
+    private static final byte BATTERY_HEADER = 0b00110011;
+    private static final byte BATTERY_NO_NOTIFICATION_HEADER = 0b00110100;
+    private static final String BATTERY = "01048F";
     private static final byte RANDOM_RESOLVABLE_DATA_HEADER = 0b01000110;
     private static final String RANDOM_RESOLVABLE_DATA = "11223344";
-    private static final byte BLOOM_FILTER_NO_NOTIFICATION_HEADER = 0b01100010;
 
+    private final FastPairDecoder mDecoder = new FastPairDecoder();
+    private final BluetoothDevice mBluetoothDevice =
+            BluetoothAdapter.getDefaultAdapter().getRemoteDevice(DEVICE_ADDRESS);
+
+    @Test
+    public void filter() {
+        assertThat(FastPairDecoder.FILTER.matches(bleSighting(getFastPairRecord()))).isTrue();
+        assertThat(FastPairDecoder.FILTER.matches(bleSighting(FAST_PAIR_SHARED_ACCOUNT_KEY_RECORD)))
+                .isTrue();
+
+        // Any ID is a valid frame.
+        assertThat(FastPairDecoder.FILTER.matches(
+                bleSighting(newFastPairRecord(Hex.stringToBytes("000001"))))).isTrue();
+        assertThat(FastPairDecoder.FILTER.matches(
+                bleSighting(newFastPairRecord(Hex.stringToBytes("098FEC"))))).isTrue();
+        assertThat(FastPairDecoder.FILTER.matches(
+                bleSighting(FastPairTestData.newFastPairRecord(
+                        LONG_MODEL_ID_HEADER, Hex.stringToBytes(LONG_MODEL_ID))))).isTrue();
+    }
 
     @Test
     public void getModelId() {
         assertThat(mDecoder.getBeaconIdBytes(parseFromBytes(getFastPairRecord())))
                 .isEqualTo(FAST_PAIR_MODEL_ID);
-        FastPairServiceData fastPairServiceData1 =
-                new FastPairServiceData(LONG_MODEL_ID_HEADER,
-                        LONG_MODEL_ID);
-        assertThat(
-                mDecoder.getBeaconIdBytes(
-                        newBleRecord(fastPairServiceData1.createServiceData())))
-                .isEqualTo(Hex.stringToBytes(LONG_MODEL_ID));
         FastPairServiceData fastPairServiceData =
-                new FastPairServiceData(PADDED_LONG_MODEL_ID_HEADER,
-                        PADDED_LONG_MODEL_ID);
+                new FastPairServiceData(LONG_MODEL_ID_HEADER, LONG_MODEL_ID);
         assertThat(
                 mDecoder.getBeaconIdBytes(
                         newBleRecord(fastPairServiceData.createServiceData())))
+                .isEqualTo(Hex.stringToBytes(LONG_MODEL_ID));
+
+        FastPairServiceData fastPairServiceData1 =
+                new FastPairServiceData(PADDED_LONG_MODEL_ID_HEADER, PADDED_LONG_MODEL_ID);
+        assertThat(
+                mDecoder.getBeaconIdBytes(
+                        newBleRecord(fastPairServiceData1.createServiceData())))
                 .isEqualTo(Hex.stringToBytes(TRIMMED_LONG_MODEL_ID));
     }
 
     @Test
-    public void getBloomFilter() {
-        FastPairServiceData fastPairServiceData = new FastPairServiceData(MODEL_ID_HEADER,
-                MODEL_ID);
-        fastPairServiceData.mExtraFieldHeaders.add(BLOOM_FILTER_HEADER);
-        fastPairServiceData.mExtraFields.add(BLOOM_FILTER);
-        assertThat(FastPairDecoder.getBloomFilter(fastPairServiceData.createServiceData()))
-                .isEqualTo(Hex.stringToBytes(BLOOM_FILTER));
+    public void getBeaconIdType() {
+        assertThat(mDecoder.getBeaconIdType()).isEqualTo(1);
     }
 
     @Test
-    public void getBloomFilter_smallModelId() {
-        FastPairServiceData fastPairServiceData = new FastPairServiceData(null, MODEL_ID);
-        assertThat(FastPairDecoder.getBloomFilter(fastPairServiceData.createServiceData()))
+    public void getCalibratedBeaconTxPower() {
+        FastPairServiceData fastPairServiceData =
+                new FastPairServiceData(LONG_MODEL_ID_HEADER, LONG_MODEL_ID);
+        assertThat(
+                mDecoder.getCalibratedBeaconTxPower(
+                        newBleRecord(fastPairServiceData.createServiceData())))
                 .isNull();
     }
 
     @Test
-    public void getBloomFilterSalt_modelIdAndMultipleExtraFields() {
-        FastPairServiceData fastPairServiceData = new FastPairServiceData(MODEL_ID_HEADER,
-                MODEL_ID);
-        fastPairServiceData.mExtraFieldHeaders.add(BLOOM_FILTER_HEADER);
-        fastPairServiceData.mExtraFieldHeaders.add(BLOOM_FILTER_SALT_HEADER);
-        fastPairServiceData.mExtraFields.add(BLOOM_FILTER);
-        fastPairServiceData.mExtraFields.add(BLOOM_FILTER_SALT);
+    public void getServiceDataArray() {
+        FastPairServiceData fastPairServiceData =
+                new FastPairServiceData(LONG_MODEL_ID_HEADER, LONG_MODEL_ID);
         assertThat(
-                FastPairDecoder.getBloomFilterSalt(fastPairServiceData.createServiceData()))
-                .isEqualTo(Hex.stringToBytes(BLOOM_FILTER_SALT));
+                mDecoder.getServiceDataArray(
+                        newBleRecord(fastPairServiceData.createServiceData())))
+                .isEqualTo(Hex.stringToBytes("101122334455667788"));
     }
 
     @Test
-    public void getRandomResolvableData_whenContainConnectionState() {
-        FastPairServiceData fastPairServiceData = new FastPairServiceData(MODEL_ID_HEADER,
-                MODEL_ID);
-        fastPairServiceData.mExtraFieldHeaders.add(RANDOM_RESOLVABLE_DATA_HEADER);
-        fastPairServiceData.mExtraFields.add(RANDOM_RESOLVABLE_DATA);
+    public void hasBloomFilter() {
+        FastPairServiceData fastPairServiceData =
+                new FastPairServiceData(LONG_MODEL_ID_HEADER, LONG_MODEL_ID);
         assertThat(
-                FastPairDecoder.getRandomResolvableData(fastPairServiceData
-                                .createServiceData()))
-                .isEqualTo(Hex.stringToBytes(RANDOM_RESOLVABLE_DATA));
+                mDecoder.hasBloomFilter(
+                        newBleRecord(fastPairServiceData.createServiceData())))
+                .isFalse();
+    }
+
+    @Test
+    public void hasModelId_allCases() {
+        // One type of the format is just the 3-byte model ID. This format has no header byte (all 3
+        // service data bytes are the model ID in little endian).
+        assertThat(hasModelId("112233", mDecoder)).isTrue();
+
+        // If the model ID is shorter than 3 bytes, then return null.
+        assertThat(hasModelId("11", mDecoder)).isFalse();
+
+        // If the data is longer than 3 bytes,
+        // byte 0 must be 0bVVVLLLLR (version, ID length, reserved).
+        FastPairServiceData fastPairServiceData =
+                new FastPairServiceData((byte) 0b00001000, "11223344");
+        assertThat(
+                FastPairDecoder.hasBeaconIdBytes(
+                        newBleRecord(fastPairServiceData.createServiceData()))).isTrue();
+
+        FastPairServiceData fastPairServiceData1 =
+                new FastPairServiceData((byte) 0b00001010, "1122334455");
+        assertThat(
+                FastPairDecoder.hasBeaconIdBytes(
+                        newBleRecord(fastPairServiceData1.createServiceData()))).isTrue();
+
+        // Length bits correct, but version bits != version 0 (only supported version).
+        FastPairServiceData fastPairServiceData2 =
+                new FastPairServiceData((byte) 0b00101000, "11223344");
+        assertThat(
+                FastPairDecoder.hasBeaconIdBytes(
+                        newBleRecord(fastPairServiceData2.createServiceData()))).isFalse();
+
+        // Version bits correct, but length bits incorrect (too big, too small).
+        FastPairServiceData fastPairServiceData3 =
+                new FastPairServiceData((byte) 0b00001010, "11223344");
+        assertThat(
+                FastPairDecoder.hasBeaconIdBytes(
+                        newBleRecord(fastPairServiceData3.createServiceData()))).isFalse();
+
+        FastPairServiceData fastPairServiceData4 =
+                new FastPairServiceData((byte) 0b00000010, "11223344");
+        assertThat(
+                FastPairDecoder.hasBeaconIdBytes(
+                        newBleRecord(fastPairServiceData4.createServiceData()))).isFalse();
+    }
+
+    @Test
+    public void getBatteryLevel() {
+        FastPairServiceData fastPairServiceData =
+                new FastPairServiceData(MODEL_ID_HEADER, MODEL_ID);
+        fastPairServiceData.mExtraFieldHeaders.add(BATTERY_HEADER);
+        fastPairServiceData.mExtraFields.add(BATTERY);
+        assertThat(
+                FastPairDecoder.getBatteryLevel(fastPairServiceData.createServiceData()))
+                .isEqualTo(Hex.stringToBytes(BATTERY));
+    }
+
+    @Test
+    public void getBatteryLevel_notIncludedInPacket() {
+        FastPairServiceData fastPairServiceData =
+                new FastPairServiceData(MODEL_ID_HEADER, MODEL_ID);
+        fastPairServiceData.mExtraFieldHeaders.add(BLOOM_FILTER_HEADER);
+        fastPairServiceData.mExtraFields.add(BLOOM_FILTER);
+        assertThat(
+                FastPairDecoder.getBatteryLevel(fastPairServiceData.createServiceData())).isNull();
+    }
+
+    @Test
+    public void getBatteryLevel_noModelId() {
+        FastPairServiceData fastPairServiceData =
+                new FastPairServiceData((byte) 0b00000000, null);
+        fastPairServiceData.mExtraFieldHeaders.add(BATTERY_HEADER);
+        fastPairServiceData.mExtraFields.add(BATTERY);
+        assertThat(
+                FastPairDecoder.getBatteryLevel(fastPairServiceData.createServiceData()))
+                .isEqualTo(Hex.stringToBytes(BATTERY));
+    }
+
+    @Test
+    public void getBatteryLevel_multipelExtraField() {
+        FastPairServiceData fastPairServiceData =
+                new FastPairServiceData(MODEL_ID_HEADER, MODEL_ID);
+        fastPairServiceData.mExtraFieldHeaders.add(BATTERY_HEADER);
+        fastPairServiceData.mExtraFields.add(BATTERY);
+        fastPairServiceData.mExtraFieldHeaders.add(BLOOM_FILTER_HEADER);
+        fastPairServiceData.mExtraFields.add(BLOOM_FILTER);
+        assertThat(
+                FastPairDecoder.getBatteryLevel(fastPairServiceData.createServiceData()))
+                .isEqualTo(Hex.stringToBytes(BATTERY));
+    }
+
+    @Test
+    public void getBatteryLevelNoNotification() {
+        FastPairServiceData fastPairServiceData =
+                new FastPairServiceData(MODEL_ID_HEADER, MODEL_ID);
+        fastPairServiceData.mExtraFieldHeaders.add(BATTERY_NO_NOTIFICATION_HEADER);
+        fastPairServiceData.mExtraFields.add(BATTERY);
+        assertThat(
+                FastPairDecoder.getBatteryLevelNoNotification(
+                        fastPairServiceData.createServiceData()))
+                .isEqualTo(Hex.stringToBytes(BATTERY));
+    }
+
+    @Test
+    public void getBatteryLevelNoNotification_notIncludedInPacket() {
+        FastPairServiceData fastPairServiceData =
+                new FastPairServiceData(MODEL_ID_HEADER, MODEL_ID);
+        fastPairServiceData.mExtraFieldHeaders.add(BLOOM_FILTER_HEADER);
+        fastPairServiceData.mExtraFields.add(BLOOM_FILTER);
+        assertThat(
+                FastPairDecoder.getBatteryLevelNoNotification(
+                        fastPairServiceData.createServiceData())).isNull();
+    }
+
+    @Test
+    public void getBatteryLevelNoNotification_noModelId() {
+        FastPairServiceData fastPairServiceData =
+                new FastPairServiceData((byte) 0b00000000, null);
+        fastPairServiceData.mExtraFieldHeaders.add(BATTERY_NO_NOTIFICATION_HEADER);
+        fastPairServiceData.mExtraFields.add(BATTERY);
+        assertThat(
+                FastPairDecoder.getBatteryLevelNoNotification(
+                        fastPairServiceData.createServiceData()))
+                .isEqualTo(Hex.stringToBytes(BATTERY));
+    }
+
+    @Test
+    public void getBatteryLevelNoNotification_multipleExtraField() {
+        FastPairServiceData fastPairServiceData =
+                new FastPairServiceData(MODEL_ID_HEADER, MODEL_ID);
+        fastPairServiceData.mExtraFieldHeaders.add(BATTERY_NO_NOTIFICATION_HEADER);
+        fastPairServiceData.mExtraFields.add(BATTERY);
+        fastPairServiceData.mExtraFieldHeaders.add(BLOOM_FILTER_HEADER);
+        fastPairServiceData.mExtraFields.add(BLOOM_FILTER);
+        assertThat(
+                FastPairDecoder.getBatteryLevelNoNotification(
+                        fastPairServiceData.createServiceData()))
+                .isEqualTo(Hex.stringToBytes(BATTERY));
+    }
+
+    @Test
+    public void getBloomFilter() {
+        FastPairServiceData fastPairServiceData =
+                new FastPairServiceData(MODEL_ID_HEADER, MODEL_ID);
+        fastPairServiceData.mExtraFieldHeaders.add(BLOOM_FILTER_HEADER);
+        fastPairServiceData.mExtraFields.add(BLOOM_FILTER);
+        assertThat(
+                FastPairDecoder.getBloomFilter(fastPairServiceData.createServiceData()))
+                .isEqualTo(Hex.stringToBytes(BLOOM_FILTER));
     }
 
     @Test
@@ -125,14 +299,222 @@
                 new FastPairServiceData(MODEL_ID_HEADER, MODEL_ID);
         fastPairServiceData.mExtraFieldHeaders.add(BLOOM_FILTER_NO_NOTIFICATION_HEADER);
         fastPairServiceData.mExtraFields.add(BLOOM_FILTER);
-        assertThat(FastPairDecoder.getBloomFilterNoNotification(fastPairServiceData
-                        .createServiceData())).isEqualTo(Hex.stringToBytes(BLOOM_FILTER));
+        assertThat(
+                FastPairDecoder.getBloomFilterNoNotification(
+                        fastPairServiceData.createServiceData()))
+                .isEqualTo(Hex.stringToBytes(BLOOM_FILTER));
+    }
+
+    @Test
+    public void getBloomFilter_smallModelId() {
+        FastPairServiceData fastPairServiceData =
+                new FastPairServiceData(null, MODEL_ID);
+        assertThat(
+                FastPairDecoder.getBloomFilter(fastPairServiceData.createServiceData()))
+                .isNull();
+    }
+
+    @Test
+    public void getBloomFilter_headerVersionBitsNotZero() {
+        // Header bits are defined as 0bVVVLLLLR (V=version, L=length, R=reserved), must be zero.
+        FastPairServiceData fastPairServiceData =
+                new FastPairServiceData((byte) 0b00100000, MODEL_ID);
+        fastPairServiceData.mExtraFieldHeaders.add(BLOOM_FILTER_HEADER);
+        fastPairServiceData.mExtraFields.add(BLOOM_FILTER);
+        assertThat(
+                FastPairDecoder.getBloomFilter(fastPairServiceData.createServiceData()))
+                .isNull();
+    }
+
+    @Test
+    public void getBloomFilter_noExtraFieldBytesIncluded() {
+        FastPairServiceData fastPairServiceData =
+                new FastPairServiceData(MODEL_ID_HEADER, MODEL_ID);
+        fastPairServiceData.mExtraFieldHeaders.add(null);
+        fastPairServiceData.mExtraFields.add(null);
+        assertThat(
+                FastPairDecoder.getBloomFilter(fastPairServiceData.createServiceData()))
+                .isNull();
+    }
+
+    @Test
+    public void getBloomFilter_extraFieldLengthIsZero() {
+        // The extra field header is formatted as 0bLLLLTTTT (L=length, T=type).
+        FastPairServiceData fastPairServiceData =
+                new FastPairServiceData(MODEL_ID_HEADER, MODEL_ID);
+        fastPairServiceData.mExtraFieldHeaders.add((byte) 0b00000000);
+        fastPairServiceData.mExtraFields.add(null);
+        assertThat(
+                FastPairDecoder.getBloomFilter(fastPairServiceData.createServiceData()))
+                .hasLength(0);
+    }
+
+    @Test
+    public void getBloomFilter_extraFieldLengthLongerThanPacket() {
+        FastPairServiceData fastPairServiceData =
+                new FastPairServiceData(MODEL_ID_HEADER, MODEL_ID);
+        fastPairServiceData.mExtraFieldHeaders.add((byte) 0b11110000);
+        fastPairServiceData.mExtraFields.add("1122");
+        assertThat(
+                FastPairDecoder.getBloomFilter(fastPairServiceData.createServiceData()))
+                .isNull();
+    }
+
+    @Test
+    public void getBloomFilter_secondExtraFieldLengthLongerThanPacket() {
+        FastPairServiceData fastPairServiceData =
+                new FastPairServiceData(MODEL_ID_HEADER, MODEL_ID);
+        fastPairServiceData.mExtraFieldHeaders.add((byte) 0b00100000);
+        fastPairServiceData.mExtraFields.add("1122");
+        fastPairServiceData.mExtraFieldHeaders.add((byte) 0b11110001);
+        fastPairServiceData.mExtraFields.add("3344");
+        assertThat(
+                FastPairDecoder.getBloomFilter(fastPairServiceData.createServiceData())).isNull();
+    }
+
+    @Test
+    public void getBloomFilter_typeIsWrong() {
+        FastPairServiceData fastPairServiceData =
+                new FastPairServiceData(MODEL_ID_HEADER, MODEL_ID);
+        fastPairServiceData.mExtraFieldHeaders.add((byte) 0b01100001);
+        fastPairServiceData.mExtraFields.add("112233445566");
+        assertThat(
+                FastPairDecoder.getBloomFilter(fastPairServiceData.createServiceData()))
+                .isNull();
+    }
+
+    @Test
+    public void getBloomFilter_noModelId() {
+        FastPairServiceData fastPairServiceData =
+                new FastPairServiceData((byte) 0b00000000, null);
+        fastPairServiceData.mExtraFieldHeaders.add(BLOOM_FILTER_HEADER);
+        fastPairServiceData.mExtraFields.add(BLOOM_FILTER);
+        assertThat(
+                FastPairDecoder.getBloomFilter(fastPairServiceData.createServiceData()))
+                .isEqualTo(Hex.stringToBytes(BLOOM_FILTER));
+    }
+
+    @Test
+    public void getBloomFilter_noModelIdAndMultipleExtraFields() {
+        FastPairServiceData fastPairServiceData =
+                new FastPairServiceData((byte) 0b00000000, null);
+        fastPairServiceData.mExtraFieldHeaders.add(BLOOM_FILTER_HEADER);
+        fastPairServiceData.mExtraFields.add(BLOOM_FILTER);
+        fastPairServiceData.mExtraFieldHeaders.add((byte) 0b00010001);
+        fastPairServiceData.mExtraFields.add("00");
+        assertThat(
+                FastPairDecoder.getBloomFilter(fastPairServiceData.createServiceData()))
+                .isEqualTo(Hex.stringToBytes(BLOOM_FILTER));
+    }
+
+    @Test
+    public void getBloomFilter_modelIdAndMultipleExtraFields() {
+        FastPairServiceData fastPairServiceData =
+                new FastPairServiceData(MODEL_ID_HEADER, MODEL_ID);
+        fastPairServiceData.mExtraFieldHeaders.add(BLOOM_FILTER_HEADER);
+        fastPairServiceData.mExtraFields.add(BLOOM_FILTER);
+        fastPairServiceData.mExtraFieldHeaders.add(BLOOM_FILTER_SALT_HEADER);
+        fastPairServiceData.mExtraFields.add(BLOOM_FILTER_SALT);
+        assertThat(
+                FastPairDecoder.getBloomFilter(fastPairServiceData.createServiceData()))
+                .isEqualTo(Hex.stringToBytes(BLOOM_FILTER));
+    }
+
+    @Test
+    public void getBloomFilterSalt_modelIdAndMultipleExtraFields() {
+        FastPairServiceData fastPairServiceData =
+                new FastPairServiceData(MODEL_ID_HEADER, MODEL_ID);
+        fastPairServiceData.mExtraFieldHeaders.add(BLOOM_FILTER_HEADER);
+        fastPairServiceData.mExtraFields.add(BLOOM_FILTER);
+        fastPairServiceData.mExtraFieldHeaders.add(BLOOM_FILTER_SALT_HEADER);
+        fastPairServiceData.mExtraFields.add(BLOOM_FILTER_SALT);
+        assertThat(
+                FastPairDecoder.getBloomFilterSalt(fastPairServiceData.createServiceData()))
+                .isEqualTo(Hex.stringToBytes(BLOOM_FILTER_SALT));
+    }
+
+    @Test
+    public void getBloomFilter_modelIdAndMultipleExtraFieldsWithBloomFilterLast() {
+        FastPairServiceData fastPairServiceData =
+                new FastPairServiceData(MODEL_ID_HEADER, MODEL_ID);
+        fastPairServiceData.mExtraFieldHeaders.add((byte) 0b00010001);
+        fastPairServiceData.mExtraFields.add("1A");
+        fastPairServiceData.mExtraFieldHeaders.add((byte) 0b00100010);
+        fastPairServiceData.mExtraFields.add("2CFE");
+        fastPairServiceData.mExtraFieldHeaders.add(BLOOM_FILTER_HEADER);
+        fastPairServiceData.mExtraFields.add(BLOOM_FILTER);
+        assertThat(
+                FastPairDecoder.getBloomFilter(fastPairServiceData.createServiceData()))
+                .isEqualTo(Hex.stringToBytes(BLOOM_FILTER));
+    }
+
+    @Test
+    public void getBloomFilter_modelIdAndMultipleExtraFieldsWithSameType() {
+        FastPairServiceData fastPairServiceData =
+                new FastPairServiceData(MODEL_ID_HEADER, MODEL_ID);
+        fastPairServiceData.mExtraFieldHeaders.add(BLOOM_FILTER_HEADER);
+        fastPairServiceData.mExtraFields.add(BLOOM_FILTER);
+        fastPairServiceData.mExtraFieldHeaders.add(BLOOM_FILTER_HEADER);
+        fastPairServiceData.mExtraFields.add("000000000000");
+        assertThat(
+                FastPairDecoder.getBloomFilter(fastPairServiceData.createServiceData()))
+                .isEqualTo(Hex.stringToBytes(BLOOM_FILTER));
+    }
+
+    @Test
+    public void getBloomFilter_longExtraField() {
+        FastPairServiceData fastPairServiceData =
+                new FastPairServiceData(MODEL_ID_HEADER, MODEL_ID);
+        fastPairServiceData.mExtraFieldHeaders.add(LONG_BLOOM_FILTER_HEADER);
+        fastPairServiceData.mExtraFields.add(LONG_BLOOM_FILTER);
+        fastPairServiceData.mExtraFieldHeaders.add(BLOOM_FILTER_HEADER);
+        fastPairServiceData.mExtraFields.add("000000000000");
+        assertThat(
+                FastPairDecoder.getBloomFilter(
+                        fastPairServiceData.createServiceData()))
+                .isEqualTo(Hex.stringToBytes(LONG_BLOOM_FILTER));
+    }
+
+    @Test
+    public void getRandomResolvableData_whenNoConnectionState() {
+        FastPairServiceData fastPairServiceData =
+                new FastPairServiceData(MODEL_ID_HEADER, MODEL_ID);
+        assertThat(
+                FastPairDecoder.getRandomResolvableData(
+                        fastPairServiceData.createServiceData()))
+                .isEqualTo(null);
+    }
+
+    @Test
+    public void getRandomResolvableData_whenContainConnectionState() {
+        FastPairServiceData fastPairServiceData =
+                new FastPairServiceData(MODEL_ID_HEADER, MODEL_ID);
+        fastPairServiceData.mExtraFieldHeaders.add(RANDOM_RESOLVABLE_DATA_HEADER);
+        fastPairServiceData.mExtraFields.add(RANDOM_RESOLVABLE_DATA);
+        assertThat(
+                FastPairDecoder.getRandomResolvableData(
+                        fastPairServiceData.createServiceData()))
+                .isEqualTo(Hex.stringToBytes(RANDOM_RESOLVABLE_DATA));
     }
 
     private static BleRecord newBleRecord(byte[] serviceDataBytes) {
         return parseFromBytes(newFastPairRecord(serviceDataBytes));
     }
-    class FastPairServiceData {
+
+    private static boolean hasModelId(String modelId, FastPairDecoder decoder) {
+        byte[] modelIdBytes = Hex.stringToBytes(modelId);
+        BleRecord bleRecord =
+                parseFromBytes(FastPairTestData.newFastPairRecord((byte) 0, modelIdBytes));
+        return FastPairDecoder.hasBeaconIdBytes(bleRecord)
+                && Arrays.equals(decoder.getBeaconIdBytes(bleRecord), modelIdBytes);
+    }
+
+    private BleSighting bleSighting(byte[] frame) {
+        return new BleSighting(mBluetoothDevice, frame, RSSI,
+                TimeUnit.MILLISECONDS.toNanos(System.currentTimeMillis()));
+    }
+
+    static class FastPairServiceData {
         private Byte mHeader;
         private String mModelId;
         List<Byte> mExtraFieldHeaders = new ArrayList<>();
@@ -164,6 +546,4 @@
             return serviceData;
         }
     }
-
-
 }
diff --git a/nearby/tests/unit/src/com/android/server/nearby/common/ble/util/RangingUtilsTest.java b/nearby/tests/unit/src/com/android/server/nearby/common/ble/util/RangingUtilsTest.java
index ebe72b3..29f8d4e 100644
--- a/nearby/tests/unit/src/com/android/server/nearby/common/ble/util/RangingUtilsTest.java
+++ b/nearby/tests/unit/src/com/android/server/nearby/common/ble/util/RangingUtilsTest.java
@@ -48,8 +48,10 @@
         // RSSI expected at 1 meter based on the calibrated tx field of -41dBm
         // Using params: distance (m), int calibratedTxPower (dBm),
         int rssi = RangingUtils.rssiFromTargetDistance(1.0, -41);
+        int rssi1 = RangingUtils.rssiFromTargetDistance(0.0, -41);
 
         assertThat(rssi).isEqualTo(-82);
+        assertThat(rssi1).isEqualTo(-41);
     }
 
     @Test
diff --git a/nearby/tests/unit/src/com/android/server/nearby/common/ble/util/StringUtilsTest.java b/nearby/tests/unit/src/com/android/server/nearby/common/ble/util/StringUtilsTest.java
new file mode 100644
index 0000000..6b20fdd
--- /dev/null
+++ b/nearby/tests/unit/src/com/android/server/nearby/common/ble/util/StringUtilsTest.java
@@ -0,0 +1,122 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.nearby.common.ble.util;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import android.os.ParcelUuid;
+import android.util.SparseArray;
+
+import com.android.server.nearby.common.ble.BleRecord;
+
+import org.junit.Test;
+
+import java.util.HashMap;
+import java.util.Map;
+
+public class StringUtilsTest {
+    // iBeacon (Apple) Packet 1
+    private static final byte[] BEACON = {
+            // Flags
+            (byte) 0x02,
+            (byte) 0x01,
+            (byte) 0x06,
+            // Manufacturer-specific data header
+            (byte) 0x1a,
+            (byte) 0xff,
+            (byte) 0x4c,
+            (byte) 0x00,
+            // iBeacon Type
+            (byte) 0x02,
+            // Frame length
+            (byte) 0x15,
+            // iBeacon Proximity UUID
+            (byte) 0xf7,
+            (byte) 0x82,
+            (byte) 0x6d,
+            (byte) 0xa6,
+            (byte) 0x4f,
+            (byte) 0xa2,
+            (byte) 0x4e,
+            (byte) 0x98,
+            (byte) 0x80,
+            (byte) 0x24,
+            (byte) 0xbc,
+            (byte) 0x5b,
+            (byte) 0x71,
+            (byte) 0xe0,
+            (byte) 0x89,
+            (byte) 0x3e,
+            // iBeacon Instance ID (Major/Minor)
+            (byte) 0x44,
+            (byte) 0xd0,
+            (byte) 0x25,
+            (byte) 0x22,
+            // Tx Power
+            (byte) 0xb3,
+            // RSP
+            (byte) 0x08,
+            (byte) 0x09,
+            (byte) 0x4b,
+            (byte) 0x6f,
+            (byte) 0x6e,
+            (byte) 0x74,
+            (byte) 0x61,
+            (byte) 0x6b,
+            (byte) 0x74,
+            (byte) 0x02,
+            (byte) 0x0a,
+            (byte) 0xf4,
+            (byte) 0x0a,
+            (byte) 0x16,
+            (byte) 0x0d,
+            (byte) 0xd0,
+            (byte) 0x74,
+            (byte) 0x6d,
+            (byte) 0x4d,
+            (byte) 0x6b,
+            (byte) 0x32,
+            (byte) 0x36,
+            (byte) 0x64,
+            (byte) 0x00,
+            (byte) 0x00,
+            (byte) 0x00,
+            (byte) 0x00,
+            (byte) 0x00,
+            (byte) 0x00,
+            (byte) 0x00,
+            (byte) 0x00,
+            (byte) 0x00
+    };
+
+    @Test
+    public void testToString() {
+        BleRecord record = BleRecord.parseFromBytes(BEACON);
+        assertThat(StringUtils.toString((SparseArray<byte[]>) null)).isEqualTo("null");
+        assertThat(StringUtils.toString(new SparseArray<byte[]>())).isEqualTo("{}");
+        assertThat(StringUtils
+                .toString((Map<ParcelUuid, byte[]>) null)).isEqualTo("null");
+        assertThat(StringUtils
+                .toString(new HashMap<ParcelUuid, byte[]>())).isEqualTo("{}");
+        assertThat(StringUtils.toString(record.getManufacturerSpecificData()))
+                .isEqualTo("{76=[2, 21, -9, -126, 109, -90, 79, -94, 78, -104, -128,"
+                        + " 36, -68, 91, 113, -32, -119, 62, 68, -48, 37, 34, -77]}");
+        assertThat(StringUtils.toString(record.getServiceData()))
+                .isEqualTo("{0000d00d-0000-1000-8000-00805f9b34fb="
+                        + "[116, 109, 77, 107, 50, 54, 100]}");
+    }
+}
diff --git a/nearby/tests/unit/src/com/android/server/nearby/common/bloomfilter/BloomFilterTest.java b/nearby/tests/unit/src/com/android/server/nearby/common/bloomfilter/BloomFilterTest.java
new file mode 100644
index 0000000..30df81f
--- /dev/null
+++ b/nearby/tests/unit/src/com/android/server/nearby/common/bloomfilter/BloomFilterTest.java
@@ -0,0 +1,307 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.nearby.common.bloomfilter;
+
+import static com.google.common.io.BaseEncoding.base16;
+import static com.google.common.primitives.Bytes.concat;
+import static com.google.common.truth.Truth.assertThat;
+import static com.google.common.truth.Truth.assertWithMessage;
+
+import org.junit.Test;
+
+import java.util.Arrays;
+
+/**
+ * Unit-tests for the {@link BloomFilter} class.
+ */
+public class BloomFilterTest {
+    private static final int BYTE_ARRAY_LENGTH = 100;
+
+    private final BloomFilter mBloomFilter =
+            new BloomFilter(new byte[BYTE_ARRAY_LENGTH], newHasher());
+
+    public BloomFilter.Hasher newHasher() {
+        return new FastPairBloomFilterHasher();
+    }
+
+    @Test
+    public void emptyFilter_returnsEmptyArray() throws Exception {
+        assertThat(mBloomFilter.asBytes()).isEqualTo(new byte[BYTE_ARRAY_LENGTH]);
+    }
+
+    @Test
+    public void emptyFilter_neverContains() throws Exception {
+        assertThat(mBloomFilter.possiblyContains(element(1))).isFalse();
+        assertThat(mBloomFilter.possiblyContains(element(2))).isFalse();
+        assertThat(mBloomFilter.possiblyContains(element(3))).isFalse();
+    }
+
+    @Test
+    public void add() throws Exception {
+        assertThat(mBloomFilter.possiblyContains(element(1))).isFalse();
+        mBloomFilter.add(element(1));
+        assertThat(mBloomFilter.possiblyContains(element(1))).isTrue();
+    }
+
+    @Test
+    public void add_onlyGivenArgAdded() throws Exception {
+        mBloomFilter.add(element(1));
+        assertThat(mBloomFilter.possiblyContains(element(1))).isTrue();
+        assertThat(mBloomFilter.possiblyContains(element(2))).isFalse();
+        assertThat(mBloomFilter.possiblyContains(element(3))).isFalse();
+    }
+
+    @Test
+    public void add_multipleArgs() throws Exception {
+        mBloomFilter.add(element(1));
+        mBloomFilter.add(element(2));
+        assertThat(mBloomFilter.possiblyContains(element(1))).isTrue();
+        assertThat(mBloomFilter.possiblyContains(element(2))).isTrue();
+        assertThat(mBloomFilter.possiblyContains(element(3))).isFalse();
+    }
+
+    /**
+     * This test was added because of a bug where the BloomFilter doesn't utilize all bits given.
+     * Functionally, the filter still works, but we just have a much higher false positive rate. The
+     * bug was caused by confusing bit length and byte length, which made our BloomFilter only set
+     * bits on the first byteLength (bitLength / 8) bits rather than the whole bitLength bits.
+     *
+     * <p>Here, we're verifying that the bits set are somewhat scattered. So instead of something
+     * like [ 0, 1, 1, 0, 0, 0, 0, ..., 0 ], we should be getting something like
+     * [ 0, 1, 0, 0, 1, 1, 0, 0,0, 1, ..., 1, 0].
+     */
+    @Test
+    public void randomness_noEndBias() throws Exception {
+        // Add one element to our BloomFilter.
+        mBloomFilter.add(element(1));
+
+        // Record the amount of non-zero bytes and the longest streak of zero bytes in the resulting
+        // BloomFilter. This is an approximation of reasonable distribution since we're recording by
+        // bytes instead of bits.
+        int nonZeroCount = 0;
+        int longestZeroStreak = 0;
+        int currentZeroStreak = 0;
+        for (byte b : mBloomFilter.asBytes()) {
+            if (b == 0) {
+                currentZeroStreak++;
+            } else {
+                // Increment the number of non-zero bytes we've seen, update the longest zero
+                // streak, and then reset the current zero streak.
+                nonZeroCount++;
+                longestZeroStreak = Math.max(longestZeroStreak, currentZeroStreak);
+                currentZeroStreak = 0;
+            }
+        }
+        // Update the longest zero streak again for the tail case.
+        longestZeroStreak = Math.max(longestZeroStreak, currentZeroStreak);
+
+        // Since randomness is hard to measure within one unit test, we instead do a valid check.
+        // All non-zero bytes should not be packed into one end of the array.
+        //
+        // In this case, the size of one end is approximated to be:
+        //   BYTE_ARRAY_LENGTH / nonZeroCount.
+        // Therefore, the longest zero streak should be less than:
+        //   BYTE_ARRAY_LENGTH - one end of the array.
+        int longestAcceptableZeroStreak = BYTE_ARRAY_LENGTH - (BYTE_ARRAY_LENGTH / nonZeroCount);
+        assertThat(longestZeroStreak).isAtMost(longestAcceptableZeroStreak);
+    }
+
+    @Test
+    public void randomness_falsePositiveRate() throws Exception {
+        // Create a new BloomFilter with a length of only 10 bytes.
+        BloomFilter bloomFilter = new BloomFilter(new byte[10], newHasher());
+
+        // Add 5 distinct elements to the BloomFilter.
+        for (int i = 0; i < 5; i++) {
+            bloomFilter.add(element(i));
+        }
+
+        // Now test 100 other elements and record the number of false positives.
+        int falsePositives = 0;
+        for (int i = 5; i < 105; i++) {
+            falsePositives += bloomFilter.possiblyContains(element(i)) ? 1 : 0;
+        }
+
+        // We expect the false positive rate to be 3% with 5 elements in a 10 byte filter. Thus,
+        // we give a little leeway and verify that the false positive rate is no more than 5%.
+        assertWithMessage(
+                String.format(
+                        "False positive rate too large. Expected <= 5%%, but got %d%%.",
+                        falsePositives))
+                .that(falsePositives <= 5)
+                .isTrue();
+        System.out.printf("False positive rate: %d%%%n", falsePositives);
+    }
+
+
+    private String element(int index) {
+        return "ELEMENT_" + index;
+    }
+
+    @Test
+    public void specificBitPattern() throws Exception {
+        // Create a new BloomFilter along with a fixed set of elements
+        // and bit patterns to verify with.
+        BloomFilter bloomFilter = new BloomFilter(new byte[6], newHasher());
+        // Combine an account key and mac address.
+        byte[] element =
+                concat(
+                        base16().decode("11223344556677889900AABBCCDDEEFF"),
+                        base16().withSeparator(":", 2).decode("84:68:3E:00:02:11"));
+        byte[] expectedBitPattern = new byte[] {0x50, 0x00, 0x04, 0x15, 0x08, 0x01};
+
+        // Add the fixed elements to the filter.
+        bloomFilter.add(element);
+
+        // Verify that the resulting bytes match the expected one.
+        byte[] bloomFilterBytes = bloomFilter.asBytes();
+        assertWithMessage(
+                "Unexpected bit pattern. Expected %s, but got %s.",
+                base16().encode(expectedBitPattern), base16().encode(bloomFilterBytes))
+                .that(Arrays.equals(expectedBitPattern, bloomFilterBytes))
+                .isTrue();
+
+        // Verify that the expected bit pattern creates a BloomFilter containing all fixed elements.
+        bloomFilter = new BloomFilter(expectedBitPattern, newHasher());
+        assertThat(bloomFilter.possiblyContains(element)).isTrue();
+    }
+
+    // This test case has been on the spec,
+    // https://devsite.googleplex.com/nearby/fast-pair/spec#test_cases.
+    // Explicitly adds it here, and we can easily change the parameters (e.g. account key, ble
+    // address) to clarify test results with partners.
+    @Test
+    public void specificBitPattern_hasOneAccountKey() {
+        BloomFilter bloomFilter1 = new BloomFilter(new byte[4], newHasher());
+        BloomFilter bloomFilter2 = new BloomFilter(new byte[4], newHasher());
+        byte[] accountKey = base16().decode("11223344556677889900AABBCCDDEEFF");
+        byte[] salt1 = base16().decode("C7");
+        byte[] salt2 = base16().decode("C7C8");
+
+        // Add the fixed elements to the filter.
+        bloomFilter1.add(concat(accountKey, salt1));
+        bloomFilter2.add(concat(accountKey, salt2));
+
+        assertThat(bloomFilter1.asBytes()).isEqualTo(base16().decode("0A428810"));
+        assertThat(bloomFilter2.asBytes()).isEqualTo(base16().decode("020C802A"));
+    }
+
+    // Adds this test case to spec. We can easily change the parameters (e.g. account key, ble
+    // address, battery data) to clarify test results with partners.
+    @Test
+    public void specificBitPattern_hasOneAccountKey_withBatteryData() {
+        BloomFilter bloomFilter1 = new BloomFilter(new byte[4], newHasher());
+        BloomFilter bloomFilter2 = new BloomFilter(new byte[4], newHasher());
+        byte[] accountKey = base16().decode("11223344556677889900AABBCCDDEEFF");
+        byte[] salt1 = base16().decode("C7");
+        byte[] salt2 = base16().decode("C7C8");
+        byte[] batteryData = {
+                0b00110011, // length = 3, show UI indication.
+                0b01000000, // Left bud: not charging, battery level = 64.
+                0b01000000, // Right bud: not charging, battery level = 64.
+                0b01000000 // Case: not charging, battery level = 64.
+        };
+
+        // Adds battery data to build bloom filter.
+        bloomFilter1.add(concat(accountKey, salt1, batteryData));
+        bloomFilter2.add(concat(accountKey, salt2, batteryData));
+
+        assertThat(bloomFilter1.asBytes()).isEqualTo(base16().decode("4A00F000"));
+        assertThat(bloomFilter2.asBytes()).isEqualTo(base16().decode("0101460A"));
+    }
+
+    // This test case has been on the spec,
+    // https://devsite.googleplex.com/nearby/fast-pair/spec#test_cases.
+    // Explicitly adds it here, and we can easily change the parameters (e.g. account key, ble
+    // address) to clarify test results with partners.
+    @Test
+    public void specificBitPattern_hasTwoAccountKeys() {
+        BloomFilter bloomFilter1 = new BloomFilter(new byte[5], newHasher());
+        BloomFilter bloomFilter2 = new BloomFilter(new byte[5], newHasher());
+        byte[] accountKey1 = base16().decode("11223344556677889900AABBCCDDEEFF");
+        byte[] accountKey2 = base16().decode("11112222333344445555666677778888");
+        byte[] salt1 = base16().decode("C7");
+        byte[] salt2 = base16().decode("C7C8");
+
+        // Adds the fixed elements to the filter.
+        bloomFilter1.add(concat(accountKey1, salt1));
+        bloomFilter1.add(concat(accountKey2, salt1));
+        bloomFilter2.add(concat(accountKey1, salt2));
+        bloomFilter2.add(concat(accountKey2, salt2));
+
+        assertThat(bloomFilter1.asBytes()).isEqualTo(base16().decode("2FBA064200"));
+        assertThat(bloomFilter2.asBytes()).isEqualTo(base16().decode("844A62208B"));
+    }
+
+    // Adds this test case to spec. We can easily change the parameters (e.g. account keys, ble
+    // address, battery data) to clarify test results with partners.
+    @Test
+    public void specificBitPattern_hasTwoAccountKeys_withBatteryData() {
+        BloomFilter bloomFilter1 = new BloomFilter(new byte[5], newHasher());
+        BloomFilter bloomFilter2 = new BloomFilter(new byte[5], newHasher());
+        byte[] accountKey1 = base16().decode("11223344556677889900AABBCCDDEEFF");
+        byte[] accountKey2 = base16().decode("11112222333344445555666677778888");
+        byte[] salt1 = base16().decode("C7");
+        byte[] salt2 = base16().decode("C7C8");
+        byte[] batteryData = {
+                0b00110011, // length = 3, show UI indication.
+                0b01000000, // Left bud: not charging, battery level = 64.
+                0b01000000, // Right bud: not charging, battery level = 64.
+                0b01000000 // Case: not charging, battery level = 64.
+        };
+
+        // Adds battery data to build bloom filter.
+        bloomFilter1.add(concat(accountKey1, salt1, batteryData));
+        bloomFilter1.add(concat(accountKey2, salt1, batteryData));
+        bloomFilter2.add(concat(accountKey1, salt2, batteryData));
+        bloomFilter2.add(concat(accountKey2, salt2, batteryData));
+
+        assertThat(bloomFilter1.asBytes()).isEqualTo(base16().decode("102256C04D"));
+        assertThat(bloomFilter2.asBytes()).isEqualTo(base16().decode("461524D008"));
+    }
+
+    // Adds this test case to spec. We can easily change the parameters (e.g. account keys, ble
+    // address, battery data and battery remaining time) to clarify test results with partners.
+    @Test
+    public void specificBitPattern_hasTwoAccountKeys_withBatteryLevelAndRemainingTime() {
+        BloomFilter bloomFilter1 = new BloomFilter(new byte[5], newHasher());
+        BloomFilter bloomFilter2 = new BloomFilter(new byte[5], newHasher());
+        byte[] accountKey1 = base16().decode("11223344556677889900AABBCCDDEEFF");
+        byte[] accountKey2 = base16().decode("11112222333344445555666677778888");
+        byte[] salt1 = base16().decode("C7");
+        byte[] salt2 = base16().decode("C7C8");
+        byte[] batteryData = {
+                0b00110011, // length = 3, show UI indication.
+                0b01000000, // Left bud: not charging, battery level = 64.
+                0b01000000, // Right bud: not charging, battery level = 64.
+                0b01000000 // Case: not charging, battery level = 64.
+        };
+        byte[] batteryRemainingTime = {
+                0b00010101, // length = 1, type = 0b0101 (remaining battery time).
+                0x1E, // remaining battery time (in minutes) =  30 minutes.
+        };
+
+        // Adds battery data to build bloom filter.
+        bloomFilter1.add(concat(accountKey1, salt1, batteryData, batteryRemainingTime));
+        bloomFilter1.add(concat(accountKey2, salt1, batteryData, batteryRemainingTime));
+        bloomFilter2.add(concat(accountKey1, salt2, batteryData, batteryRemainingTime));
+        bloomFilter2.add(concat(accountKey2, salt2, batteryData, batteryRemainingTime));
+
+        assertThat(bloomFilter1.asBytes()).isEqualTo(base16().decode("32A086B41A"));
+        assertThat(bloomFilter2.asBytes()).isEqualTo(base16().decode("C2A042043E"));
+    }
+}
diff --git a/nearby/tests/unit/src/com/android/server/nearby/common/bloomfilter/FastPairBloomFilterHasherTest.java b/nearby/tests/unit/src/com/android/server/nearby/common/bloomfilter/FastPairBloomFilterHasherTest.java
new file mode 100644
index 0000000..92c3b1a
--- /dev/null
+++ b/nearby/tests/unit/src/com/android/server/nearby/common/bloomfilter/FastPairBloomFilterHasherTest.java
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.nearby.common.bloomfilter;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static java.nio.charset.StandardCharsets.UTF_8;
+
+import org.junit.Test;
+
+import java.nio.charset.Charset;
+
+public class FastPairBloomFilterHasherTest {
+    private static final Charset CHARSET = UTF_8;
+    private static FastPairBloomFilterHasher sFastPairBloomFilterHasher =
+            new FastPairBloomFilterHasher();
+    @Test
+    public void getHashes() {
+        int[] hashe1 = sFastPairBloomFilterHasher.getHashes(element(1).getBytes(CHARSET));
+        int[] hashe2 = sFastPairBloomFilterHasher.getHashes(element(1).getBytes(CHARSET));
+        int[] hashe3 = sFastPairBloomFilterHasher.getHashes(element(2).getBytes(CHARSET));
+        assertThat(hashe1).isEqualTo(hashe2);
+        assertThat(hashe1).isNotEqualTo(hashe3);
+    }
+
+    private String element(int index) {
+        return "ELEMENT_" + index;
+    }
+}
diff --git a/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/fastpair/AdditionalDataEncoderTest.java b/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/fastpair/AdditionalDataEncoderTest.java
index 28d2fca..cf40fc6 100644
--- a/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/fastpair/AdditionalDataEncoderTest.java
+++ b/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/fastpair/AdditionalDataEncoderTest.java
@@ -63,6 +63,21 @@
 
     @Test
     @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void inputNullSecretKeyToEncode_mustThrowException() {
+        byte[] rawData = base16().decode("00112233445566778899AABBCCDDEEFF");
+
+        GeneralSecurityException exception =
+                assertThrows(
+                        GeneralSecurityException.class,
+                        () -> AdditionalDataEncoder.encodeAdditionalDataPacket(null, rawData));
+
+        assertThat(exception)
+                .hasMessageThat()
+                .contains("Incorrect secret for encoding additional data packet");
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
     public void inputIncorrectKeySizeToEncode_mustThrowException() {
         byte[] secret = new byte[KEY_LENGTH - 1];
         byte[] rawData = base16().decode("00112233445566778899AABBCCDDEEFF");
@@ -79,6 +94,54 @@
 
     @Test
     @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void inputNullAdditionalDataToEncode_mustThrowException()
+            throws GeneralSecurityException {
+        byte[] secret = AesCtrMultipleBlockEncryption.generateKey();
+
+        GeneralSecurityException exception =
+                assertThrows(
+                        GeneralSecurityException.class,
+                        () -> AdditionalDataEncoder.encodeAdditionalDataPacket(secret, null));
+
+        assertThat(exception)
+                .hasMessageThat()
+                .contains("Invalid data for encoding additional data packet");
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void inputInvalidAdditionalDataSizeToEncode_mustThrowException()
+            throws GeneralSecurityException {
+        byte[] secret = AesCtrMultipleBlockEncryption.generateKey();
+        byte[] rawData = base16().decode("");
+        GeneralSecurityException exception =
+                assertThrows(
+                        GeneralSecurityException.class,
+                        () -> AdditionalDataEncoder.encodeAdditionalDataPacket(secret, rawData));
+
+        assertThat(exception)
+                .hasMessageThat()
+                .contains("Invalid data for encoding additional data packet");
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void inputTooLargeAdditionalDataSizeToEncode_mustThrowException()
+            throws GeneralSecurityException {
+        byte[] secret = AesCtrMultipleBlockEncryption.generateKey();
+        byte[] rawData = new byte[MAX_LENGTH_OF_DATA + 1];
+        GeneralSecurityException exception =
+                assertThrows(
+                        GeneralSecurityException.class,
+                        () -> AdditionalDataEncoder.encodeAdditionalDataPacket(secret, rawData));
+
+        assertThat(exception)
+                .hasMessageThat()
+                .contains("Invalid data for encoding additional data packet");
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
     public void inputIncorrectKeySizeToDecode_mustThrowException() {
         byte[] secret = new byte[KEY_LENGTH - 1];
         byte[] packet = base16().decode("01234567890123456789");
diff --git a/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/fastpair/BluetoothAudioPairerTest.java b/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/fastpair/BluetoothAudioPairerTest.java
index 0a56f2f..6871024 100644
--- a/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/fastpair/BluetoothAudioPairerTest.java
+++ b/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/fastpair/BluetoothAudioPairerTest.java
@@ -84,6 +84,23 @@
     }
 
     @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void getDevice() {
+        Context context = InstrumentationRegistry.getInstrumentation().getTargetContext();
+        try {
+            assertThat(new BluetoothAudioPairer(
+                    context,
+                    BLUETOOTH_DEVICE,
+                    Preferences.builder().build(),
+                    new EventLoggerWrapper(new TestEventLogger()),
+                    null /* KeyBasePairingInfo */,
+                    null /*PasskeyConfirmationHandler */,
+                    new TimingLogger(EVENT_NAME, Preferences.builder().build())).getDevice())
+                    .isEqualTo(BLUETOOTH_DEVICE);
+        } catch (PairingException e) {
+        }
+    }
+
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
     public void testBluetoothAudioPairerUnpairNoCrash() {
         Context context = InstrumentationRegistry.getInstrumentation().getTargetContext();
         try {
diff --git a/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/fastpair/BluetoothClassicPairerTest.java b/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/fastpair/BluetoothClassicPairerTest.java
new file mode 100644
index 0000000..48f4b9b
--- /dev/null
+++ b/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/fastpair/BluetoothClassicPairerTest.java
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.nearby.common.bluetooth.fastpair;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.junit.Assert.assertThrows;
+
+import android.bluetooth.BluetoothAdapter;
+import android.bluetooth.BluetoothDevice;
+
+import androidx.test.core.app.ApplicationProvider;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.mockito.Mock;
+
+public class BluetoothClassicPairerTest {
+    @Mock
+    PasskeyConfirmationHandler mPasskeyConfirmationHandler;
+    private static final BluetoothDevice BLUETOOTH_DEVICE = BluetoothAdapter.getDefaultAdapter()
+            .getRemoteDevice("11:22:33:44:55:66");
+    private  BluetoothClassicPairer mBluetoothClassicPairer;
+
+    @Before
+    public void setUp() {
+        mBluetoothClassicPairer = new BluetoothClassicPairer(
+                ApplicationProvider.getApplicationContext(),
+                BLUETOOTH_DEVICE,
+                Preferences.builder().build(),
+                mPasskeyConfirmationHandler);
+    }
+
+    @Test
+    public void pair() throws PairingException {
+        PairingException exception =
+                assertThrows(
+                        PairingException.class,
+                        () -> mBluetoothClassicPairer.pair());
+
+        assertThat(exception)
+                .hasMessageThat()
+                .contains("BluetoothClassicPairer, createBond");
+        assertThat(mBluetoothClassicPairer.isPaired()).isFalse();
+    }
+}
diff --git a/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/fastpair/BytesTest.java b/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/fastpair/BytesTest.java
new file mode 100644
index 0000000..9450d60
--- /dev/null
+++ b/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/fastpair/BytesTest.java
@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.nearby.common.bluetooth.fastpair;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import androidx.test.filters.SdkSuppress;
+
+import junit.framework.TestCase;
+
+import java.nio.ByteOrder;
+import java.util.Arrays;
+
+/**
+ * Unit tests for {@link Bytes}.
+ */
+public class BytesTest extends TestCase {
+
+    private static final Bytes.Value VALUE1 =
+            new Bytes.Value(new byte[]{1, 2}, ByteOrder.BIG_ENDIAN);
+    private static final Bytes.Value VALUE2 =
+            new Bytes.Value(new byte[]{1, 2}, ByteOrder.BIG_ENDIAN);
+    private static final Bytes.Value VALUE3 =
+            new Bytes.Value(new byte[]{1, 3}, ByteOrder.BIG_ENDIAN);
+
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testEquals_asExpected()  {
+        assertThat(VALUE1.equals(VALUE2)).isTrue();
+    }
+
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testNotEquals_asExpected()  {
+        assertThat(VALUE1.equals(VALUE3)).isFalse();
+    }
+
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testGetBytes_asExpected()  {
+        assertThat(Arrays.equals(VALUE1.getBytes(ByteOrder.BIG_ENDIAN), new byte[]{1, 2})).isTrue();
+    }
+
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testToString()  {
+        assertThat(VALUE1.toString()).isEqualTo("0102");
+    }
+
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testReverse()  {
+        assertThat(VALUE1.reverse(new byte[]{1, 2})).isEqualTo(new byte[]{2, 1});
+    }
+}
diff --git a/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/fastpair/ConstantsTest.java b/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/fastpair/ConstantsTest.java
index f7ffa24..6684fbc 100644
--- a/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/fastpair/ConstantsTest.java
+++ b/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/fastpair/ConstantsTest.java
@@ -33,6 +33,8 @@
 import com.android.server.nearby.common.bluetooth.fastpair.Constants.FastPairService.KeyBasedPairingCharacteristic;
 import com.android.server.nearby.common.bluetooth.gatt.BluetoothGattConnection;
 
+import com.google.common.collect.ImmutableList;
+
 import junit.framework.TestCase;
 
 import org.mockito.Mock;
@@ -44,6 +46,8 @@
  */
 public class ConstantsTest extends TestCase {
 
+    private static final int PASSKEY = 32689;
+
     @Mock
     private BluetoothGattConnection mMockGattConnection;
 
@@ -78,4 +82,62 @@
         assertThat(KeyBasedPairingCharacteristic.getId(mMockGattConnection))
                 .isEqualTo(OLD_KEY_BASE_PAIRING_CHARACTERISTICS);
     }
+
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void test_accountKeyCharacteristic_notCrash() throws BluetoothException {
+        Constants.FastPairService.AccountKeyCharacteristic.getId(mMockGattConnection);
+    }
+
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void test_additionalDataCharacteristic_notCrash() throws BluetoothException {
+        Constants.FastPairService.AdditionalDataCharacteristic.getId(mMockGattConnection);
+    }
+
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void test_nameCharacteristic_notCrash() throws BluetoothException {
+        Constants.FastPairService.NameCharacteristic.getId(mMockGattConnection);
+    }
+
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void test_passKeyCharacteristic_encryptDecryptSuccessfully()
+            throws java.security.GeneralSecurityException {
+        byte[] secret = AesEcbSingleBlockEncryption.generateKey();
+
+        Constants.FastPairService.PasskeyCharacteristic.getId(mMockGattConnection);
+        assertThat(
+                Constants.FastPairService.PasskeyCharacteristic.decrypt(
+                        Constants.FastPairService.PasskeyCharacteristic.Type.SEEKER,
+                        secret,
+                        Constants.FastPairService.PasskeyCharacteristic.encrypt(
+                                Constants.FastPairService.PasskeyCharacteristic.Type.SEEKER,
+                                secret,
+                                PASSKEY))
+        ).isEqualTo(PASSKEY);
+    }
+
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void test_beaconActionsCharacteristic_notCrash() throws BluetoothException {
+        Constants.FastPairService.BeaconActionsCharacteristic.getId(mMockGattConnection);
+        for (byte b : ImmutableList.of(
+                (byte) Constants.FastPairService.BeaconActionsCharacteristic.BeaconActionType
+                        .READ_BEACON_PARAMETERS,
+                (byte) Constants.FastPairService.BeaconActionsCharacteristic.BeaconActionType
+                        .READ_PROVISIONING_STATE,
+                (byte) Constants.FastPairService.BeaconActionsCharacteristic.BeaconActionType
+                        .SET_EPHEMERAL_IDENTITY_KEY,
+                (byte) Constants.FastPairService.BeaconActionsCharacteristic.BeaconActionType
+                        .CLEAR_EPHEMERAL_IDENTITY_KEY,
+                (byte) Constants.FastPairService.BeaconActionsCharacteristic.BeaconActionType
+                        .READ_EPHEMERAL_IDENTITY_KEY,
+                (byte) Constants.FastPairService.BeaconActionsCharacteristic.BeaconActionType
+                        .RING,
+                (byte) Constants.FastPairService.BeaconActionsCharacteristic.BeaconActionType
+                        .READ_RINGING_STATE,
+                (byte) Constants.FastPairService.BeaconActionsCharacteristic.BeaconActionType
+                        .UNKNOWN
+        )) {
+            assertThat(Constants.FastPairService.BeaconActionsCharacteristic
+                    .valueOf(b)).isEqualTo(b);
+        }
+    }
 }
diff --git a/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/fastpair/CreateBondExceptionTest.java b/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/fastpair/CreateBondExceptionTest.java
new file mode 100644
index 0000000..052e696
--- /dev/null
+++ b/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/fastpair/CreateBondExceptionTest.java
@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.nearby.common.bluetooth.fastpair;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import androidx.test.filters.SdkSuppress;
+
+import com.android.server.nearby.common.bluetooth.BluetoothException;
+import com.android.server.nearby.intdefs.FastPairEventIntDefs;
+
+import junit.framework.TestCase;
+
+/**
+ * Unit tests for {@link CreateBondException}.
+ */
+public class CreateBondExceptionTest extends TestCase {
+
+    private static final String FORMAT = "FORMAT";
+    private static final int REASON = 0;
+    private static final CreateBondException EXCEPTION = new CreateBondException(
+            FastPairEventIntDefs.CreateBondErrorCode.INCORRECT_VARIANT, REASON, FORMAT);
+
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void test_getter_asExpected() throws BluetoothException {
+        assertThat(EXCEPTION.getErrorCode()).isEqualTo(
+                FastPairEventIntDefs.CreateBondErrorCode.INCORRECT_VARIANT);
+        assertThat(EXCEPTION.getReason()).isSameInstanceAs(REASON);
+    }
+}
diff --git a/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/fastpair/DeviceIntentReceiverTest.java b/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/fastpair/DeviceIntentReceiverTest.java
new file mode 100644
index 0000000..94bf111
--- /dev/null
+++ b/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/fastpair/DeviceIntentReceiverTest.java
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.nearby.common.bluetooth.fastpair;
+
+import static org.mockito.MockitoAnnotations.initMocks;
+
+import android.bluetooth.BluetoothDevice;
+import android.content.Context;
+import android.content.Intent;
+
+import androidx.test.filters.SdkSuppress;
+import androidx.test.platform.app.InstrumentationRegistry;
+
+import junit.framework.TestCase;
+
+import org.mockito.Mock;
+
+/**
+ * Unit tests for {@link DeviceIntentReceiver}.
+ */
+public class DeviceIntentReceiverTest extends TestCase {
+    @Mock Preferences mPreferences;
+    @Mock BluetoothDevice mBluetoothDevice;
+
+    private DeviceIntentReceiver mDeviceIntentReceiver;
+    private Intent mIntent;
+
+    @Override
+    protected void setUp() throws Exception {
+        super.setUp();
+        initMocks(this);
+
+        Context context = InstrumentationRegistry.getInstrumentation().getContext();
+        mDeviceIntentReceiver = DeviceIntentReceiver.oneShotReceiver(
+                context, mPreferences, mBluetoothDevice);
+
+        mIntent = new Intent().putExtra(BluetoothDevice.EXTRA_DEVICE, mBluetoothDevice);
+    }
+
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void test_onReceive_notCrash() throws Exception {
+        mDeviceIntentReceiver.onReceive(mIntent);
+    }
+}
diff --git a/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/fastpair/EventTest.java b/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/fastpair/EventTest.java
index 28e925f..1b63ad0 100644
--- a/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/fastpair/EventTest.java
+++ b/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/fastpair/EventTest.java
@@ -58,6 +58,13 @@
                         .setBluetoothDevice(BLUETOOTH_DEVICE)
                         .setProfile(PROFILE)
                         .build();
+        assertThat(event.hasBluetoothDevice()).isTrue();
+        assertThat(event.hasProfile()).isTrue();
+        assertThat(event.isFailure()).isTrue();
+        assertThat(event.toString()).isEqualTo(
+                "Event{eventCode=1120, timestamp=1234, profile=1, "
+                        + "bluetoothDevice=11:22:33:44:55:66, "
+                        + "exception=java.lang.Exception: Test exception}");
 
         Parcel parcel = Parcel.obtain();
         event.writeToParcel(parcel, event.describeContents());
@@ -70,5 +77,8 @@
         assertThat(result.getEventCode()).isEqualTo(event.getEventCode());
         assertThat(result.getBluetoothDevice()).isEqualTo(event.getBluetoothDevice());
         assertThat(result.getProfile()).isEqualTo(event.getProfile());
+        assertThat(result.equals(event)).isTrue();
+
+        assertThat(Event.CREATOR.newArray(10)).isNotEmpty();
     }
 }
diff --git a/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/fastpair/FastPairDualConnectionTest.java b/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/fastpair/FastPairDualConnectionTest.java
index a103a72..63c39b2 100644
--- a/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/fastpair/FastPairDualConnectionTest.java
+++ b/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/fastpair/FastPairDualConnectionTest.java
@@ -23,9 +23,11 @@
 
 import static com.google.common.truth.Truth.assertThat;
 
+import static org.junit.Assert.assertThrows;
 import static org.mockito.ArgumentMatchers.anyBoolean;
 import static org.mockito.ArgumentMatchers.anyShort;
 import static org.mockito.Mockito.doNothing;
+import static org.mockito.Mockito.when;
 
 import android.bluetooth.BluetoothAdapter;
 import android.bluetooth.BluetoothDevice;
@@ -45,6 +47,7 @@
 
 import junit.framework.TestCase;
 
+import org.junit.Test;
 import org.mockito.Mock;
 import org.mockito.MockitoAnnotations;
 
@@ -75,6 +78,8 @@
     private TestEventLogger mEventLogger;
     @Mock private TimingLogger mTimingLogger;
     @Mock private BluetoothAudioPairer mBluetoothAudioPairer;
+    @Mock private android.bluetooth.BluetoothAdapter mBluetoothAdapter;
+    @Mock FastPairDualConnection mFastPairDualConnection;
 
     @Override
     public void setUp() throws Exception {
@@ -287,6 +292,23 @@
         }
     }
 
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testReflectionException()
+            throws BluetoothException, ReflectionException, ExecutionException,
+            InterruptedException, PairingException, TimeoutException {
+        when(mFastPairDualConnection.pair())
+                .thenThrow(new ReflectionException(
+                        new NoSuchMethodException("testReflectionException")));
+        ReflectionException exception =
+                assertThrows(
+                        ReflectionException.class,
+                        () -> mFastPairDualConnection.pair());
+        assertThat(exception)
+                .hasMessageThat()
+                .contains("testReflectionException");
+    }
+
     @SdkSuppress(minSdkVersion = 32, codeName = "T")
     public void testHistoryItem() {
         FastPairDualConnection connection = new FastPairDualConnection(
@@ -307,6 +329,11 @@
                 .isFalse();
     }
 
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testGetLeState() throws ReflectionException {
+        FastPairDualConnection.getLeState(mBluetoothAdapter);
+    }
+
     static class TestEventLogger implements EventLogger {
 
         private List<Item> mLogs = new ArrayList<>();
diff --git a/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/fastpair/HandshakeHandlerTest.java b/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/fastpair/HandshakeHandlerTest.java
new file mode 100644
index 0000000..e53e60f
--- /dev/null
+++ b/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/fastpair/HandshakeHandlerTest.java
@@ -0,0 +1,524 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.nearby.common.bluetooth.fastpair;
+
+import static com.android.server.nearby.common.bluetooth.fastpair.Constants.BLUETOOTH_ADDRESS_LENGTH;
+import static com.android.server.nearby.common.bluetooth.fastpair.Constants.FastPairService.KeyBasedPairingCharacteristic.ActionOverBleFlag.ADDITIONAL_DATA_CHARACTERISTIC;
+import static com.android.server.nearby.common.bluetooth.fastpair.Constants.FastPairService.KeyBasedPairingCharacteristic.ActionOverBleFlag.DEVICE_ACTION;
+import static com.android.server.nearby.common.bluetooth.fastpair.Constants.FastPairService.KeyBasedPairingCharacteristic.KeyBasedPairingRequestFlag.PROVIDER_INITIATES_BONDING;
+import static com.android.server.nearby.common.bluetooth.fastpair.Constants.FastPairService.KeyBasedPairingCharacteristic.KeyBasedPairingRequestFlag.REQUEST_DEVICE_NAME;
+import static com.android.server.nearby.common.bluetooth.fastpair.Constants.FastPairService.KeyBasedPairingCharacteristic.KeyBasedPairingRequestFlag.REQUEST_DISCOVERABLE;
+import static com.android.server.nearby.common.bluetooth.fastpair.Constants.FastPairService.KeyBasedPairingCharacteristic.KeyBasedPairingRequestFlag.REQUEST_RETROACTIVE_PAIR;
+import static com.android.server.nearby.common.bluetooth.fastpair.Constants.FastPairService.KeyBasedPairingCharacteristic.Request.ADDITIONAL_DATA_TYPE_INDEX;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.junit.Assert.assertThrows;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.ArgumentMatchers.anyLong;
+import static org.mockito.Mockito.inOrder;
+import static org.mockito.Mockito.when;
+
+import android.platform.test.annotations.Presubmit;
+
+import androidx.annotation.Nullable;
+import androidx.core.util.Consumer;
+import androidx.test.core.app.ApplicationProvider;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+import androidx.test.filters.SdkSuppress;
+import androidx.test.filters.SmallTest;
+
+import com.android.server.nearby.common.bluetooth.BluetoothException;
+import com.android.server.nearby.common.bluetooth.BluetoothGattException;
+import com.android.server.nearby.common.bluetooth.fastpair.Constants.FastPairService.AdditionalDataCharacteristic.AdditionalDataType;
+import com.android.server.nearby.common.bluetooth.fastpair.Constants.FastPairService.KeyBasedPairingCharacteristic.Request;
+import com.android.server.nearby.common.bluetooth.gatt.BluetoothGattConnection;
+import com.android.server.nearby.common.bluetooth.testability.android.bluetooth.BluetoothAdapter;
+import com.android.server.nearby.common.bluetooth.util.BluetoothOperationExecutor;
+import com.android.server.nearby.intdefs.NearbyEventIntDefs;
+
+import com.google.common.collect.ImmutableSet;
+import com.google.common.io.BaseEncoding;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.InOrder;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+
+import java.security.GeneralSecurityException;
+import java.time.Duration;
+import java.util.Arrays;
+
+/**
+ * Unit tests for {@link HandshakeHandler}.
+ */
+@Presubmit
+@SmallTest
+@RunWith(AndroidJUnit4.class)
+public class HandshakeHandlerTest {
+
+    public static final byte[] PUBLIC_KEY =
+            BaseEncoding.base64().decode(
+                    "d2JTfvfdS6u7LmGfMOmco3C7ra3lW1k17AOly0LrBydDZURacfTY"
+                            + "IMmo5K1ejfD9e8b6qHsDTNzselhifi10kQ==");
+    private static final String SEEKER_ADDRESS = "A1:A2:A3:A4:A5:A6";
+    private static final String PROVIDER_BLE_ADDRESS = "11:22:33:44:55:66";
+    /**
+     * The random-resolvable private address (RPA) is sometimes used when advertising over BLE, to
+     * hide the static public address (otherwise, the Fast Pair device would b
+     * identifiable/trackable whenever it's BLE advertising).
+     */
+    private static final String RANDOM_PRIVATE_ADDRESS = "BB:BB:BB:BB:BB:1E";
+    private static final byte[] SHARED_SECRET =
+            BaseEncoding.base16().decode("0123456789ABCDEF0123456789ABCDEF");
+
+    @Mock EventLoggerWrapper mEventLoggerWrapper;
+    @Mock BluetoothGattConnection mBluetoothGattConnection;
+    @Mock BluetoothGattConnection.ChangeObserver mChangeObserver;
+    @Mock private Consumer<Integer> mRescueFromError;
+
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void handshakeGattError_noRetryError_failed() throws BluetoothException {
+        HandshakeHandler.KeyBasedPairingRequest keyBasedPairingRequest =
+                new HandshakeHandler.KeyBasedPairingRequest.Builder()
+                        .setVerificationData(BluetoothAddress.decode(PROVIDER_BLE_ADDRESS))
+                        .build();
+        BluetoothGattException exception =
+                new BluetoothGattException("Exception for no retry", 257);
+        when(mChangeObserver.waitForUpdate(anyLong())).thenThrow(exception);
+        GattConnectionManager gattConnectionManager =
+                createGattConnectionManager(Preferences.builder(), () -> {});
+        gattConnectionManager.setGattConnection(mBluetoothGattConnection);
+        when(mBluetoothGattConnection.enableNotification(any(), any()))
+                .thenReturn(mChangeObserver);
+        InOrder inOrder = inOrder(mEventLoggerWrapper);
+
+        assertThrows(
+                BluetoothGattException.class,
+                () ->
+                        getHandshakeHandler(gattConnectionManager, address -> address)
+                                .doHandshakeWithRetryAndSignalLostCheck(
+                                        PUBLIC_KEY,
+                                        keyBasedPairingRequest,
+                                        mRescueFromError));
+
+        inOrder.verify(mEventLoggerWrapper).setCurrentEvent(
+                NearbyEventIntDefs.EventCode.SECRET_HANDSHAKE_GATT_COMMUNICATION);
+        inOrder.verify(mEventLoggerWrapper).logCurrentEventFailed(exception);
+        inOrder.verifyNoMoreInteractions();
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void handshakeGattError_retryAndNoCount_throwException() throws BluetoothException {
+        HandshakeHandler.KeyBasedPairingRequest keyBasedPairingRequest =
+                new HandshakeHandler.KeyBasedPairingRequest.Builder()
+                        .setVerificationData(BluetoothAddress.decode(PROVIDER_BLE_ADDRESS))
+                        .build();
+        BluetoothGattException exception = new BluetoothGattException("Exception for retry", 133);
+        when(mChangeObserver.waitForUpdate(anyLong())).thenThrow(exception);
+        GattConnectionManager gattConnectionManager =
+                createGattConnectionManager(Preferences.builder(), () -> {});
+        gattConnectionManager.setGattConnection(mBluetoothGattConnection);
+        when(mBluetoothGattConnection.enableNotification(any(), any()))
+                .thenReturn(mChangeObserver);
+        InOrder inOrder = inOrder(mEventLoggerWrapper);
+
+        HandshakeHandler.HandshakeException handshakeException =
+                assertThrows(
+                        HandshakeHandler.HandshakeException.class,
+                        () -> getHandshakeHandler(gattConnectionManager, address -> address)
+                                .doHandshakeWithRetryAndSignalLostCheck(
+                                        PUBLIC_KEY, keyBasedPairingRequest, mRescueFromError));
+
+        inOrder.verify(mEventLoggerWrapper)
+                .setCurrentEvent(NearbyEventIntDefs.EventCode.SECRET_HANDSHAKE_GATT_COMMUNICATION);
+        inOrder.verify(mEventLoggerWrapper).logCurrentEventFailed(exception);
+        inOrder.verify(mEventLoggerWrapper)
+                .setCurrentEvent(NearbyEventIntDefs.EventCode.SECRET_HANDSHAKE_GATT_COMMUNICATION);
+        inOrder.verify(mEventLoggerWrapper).logCurrentEventFailed(exception);
+        inOrder.verify(mEventLoggerWrapper)
+                .setCurrentEvent(NearbyEventIntDefs.EventCode.SECRET_HANDSHAKE_GATT_COMMUNICATION);
+        inOrder.verify(mEventLoggerWrapper).logCurrentEventFailed(exception);
+        inOrder.verify(mEventLoggerWrapper)
+                .setCurrentEvent(NearbyEventIntDefs.EventCode.SECRET_HANDSHAKE_GATT_COMMUNICATION);
+        inOrder.verify(mEventLoggerWrapper).logCurrentEventFailed(exception);
+        inOrder.verifyNoMoreInteractions();
+        assertThat(handshakeException.getOriginalException()).isEqualTo(exception);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void handshakeGattError_noRetryOnTimeout_throwException() throws BluetoothException {
+        HandshakeHandler.KeyBasedPairingRequest keyBasedPairingRequest =
+                new HandshakeHandler.KeyBasedPairingRequest.Builder()
+                        .setVerificationData(BluetoothAddress.decode(PROVIDER_BLE_ADDRESS))
+                        .build();
+        BluetoothOperationExecutor.BluetoothOperationTimeoutException exception =
+                new BluetoothOperationExecutor.BluetoothOperationTimeoutException("Test timeout");
+        when(mChangeObserver.waitForUpdate(anyLong())).thenThrow(exception);
+        GattConnectionManager gattConnectionManager =
+                createGattConnectionManager(Preferences.builder(), () -> {});
+        gattConnectionManager.setGattConnection(mBluetoothGattConnection);
+        when(mBluetoothGattConnection.enableNotification(any(), any()))
+                .thenReturn(mChangeObserver);
+        InOrder inOrder = inOrder(mEventLoggerWrapper);
+
+        assertThrows(
+                HandshakeHandler.HandshakeException.class,
+                () ->
+                        new HandshakeHandler(
+                                gattConnectionManager,
+                                PROVIDER_BLE_ADDRESS,
+                                Preferences.builder().setRetrySecretHandshakeTimeout(false).build(),
+                                mEventLoggerWrapper,
+                                address -> address)
+                                .doHandshakeWithRetryAndSignalLostCheck(
+                                        PUBLIC_KEY, keyBasedPairingRequest, mRescueFromError));
+
+        inOrder.verify(mEventLoggerWrapper)
+                .setCurrentEvent(NearbyEventIntDefs.EventCode.SECRET_HANDSHAKE_GATT_COMMUNICATION);
+        inOrder.verify(mEventLoggerWrapper).logCurrentEventFailed(exception);
+        inOrder.verifyNoMoreInteractions();
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void handshakeGattError_signalLost() throws BluetoothException {
+        HandshakeHandler.KeyBasedPairingRequest keyBasedPairingRequest =
+                new HandshakeHandler.KeyBasedPairingRequest.Builder()
+                        .setVerificationData(BluetoothAddress.decode(PROVIDER_BLE_ADDRESS))
+                        .build();
+        BluetoothGattException exception = new BluetoothGattException("Exception for retry", 133);
+        when(mChangeObserver.waitForUpdate(anyLong())).thenThrow(exception);
+        GattConnectionManager gattConnectionManager =
+                createGattConnectionManager(Preferences.builder(), () -> {});
+        gattConnectionManager.setGattConnection(mBluetoothGattConnection);
+        when(mBluetoothGattConnection.enableNotification(any(), any()))
+                .thenReturn(mChangeObserver);
+        InOrder inOrder = inOrder(mEventLoggerWrapper);
+
+        SignalLostException signalLostException =
+                assertThrows(
+                        SignalLostException.class,
+                        () -> getHandshakeHandler(gattConnectionManager, address -> null)
+                                .doHandshakeWithRetryAndSignalLostCheck(
+                                        PUBLIC_KEY, keyBasedPairingRequest, mRescueFromError));
+
+        inOrder.verify(mEventLoggerWrapper)
+                .setCurrentEvent(NearbyEventIntDefs.EventCode.SECRET_HANDSHAKE_GATT_COMMUNICATION);
+        inOrder.verify(mEventLoggerWrapper).logCurrentEventFailed(exception);
+        assertThat(signalLostException).hasCauseThat().isEqualTo(exception);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void handshakeGattError_addressRotate() throws BluetoothException {
+        HandshakeHandler.KeyBasedPairingRequest keyBasedPairingRequest =
+                new HandshakeHandler.KeyBasedPairingRequest.Builder()
+                        .setVerificationData(BluetoothAddress.decode(PROVIDER_BLE_ADDRESS))
+                        .build();
+        BluetoothGattException exception = new BluetoothGattException("Exception for retry", 133);
+        when(mChangeObserver.waitForUpdate(anyLong())).thenThrow(exception);
+        GattConnectionManager gattConnectionManager =
+                createGattConnectionManager(Preferences.builder(), () -> {});
+        gattConnectionManager.setGattConnection(mBluetoothGattConnection);
+        when(mBluetoothGattConnection.enableNotification(any(), any()))
+                .thenReturn(mChangeObserver);
+        InOrder inOrder = inOrder(mEventLoggerWrapper);
+
+        SignalRotatedException signalRotatedException =
+                assertThrows(
+                        SignalRotatedException.class,
+                        () -> getHandshakeHandler(
+                                gattConnectionManager, address -> "AA:BB:CC:DD:EE:FF")
+                                .doHandshakeWithRetryAndSignalLostCheck(
+                                        PUBLIC_KEY, keyBasedPairingRequest, mRescueFromError));
+
+        inOrder.verify(mEventLoggerWrapper).setCurrentEvent(
+                NearbyEventIntDefs.EventCode.SECRET_HANDSHAKE_GATT_COMMUNICATION);
+        inOrder.verify(mEventLoggerWrapper).logCurrentEventFailed(exception);
+        assertThat(signalRotatedException.getNewAddress()).isEqualTo("AA:BB:CC:DD:EE:FF");
+        assertThat(signalRotatedException).hasCauseThat().isEqualTo(exception);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void constructBytes_setRetroactiveFlag_decodeCorrectly() throws
+            GeneralSecurityException {
+        HandshakeHandler.KeyBasedPairingRequest keyBasedPairingRequest =
+                new HandshakeHandler.KeyBasedPairingRequest.Builder()
+                        .setVerificationData(BluetoothAddress.decode(PROVIDER_BLE_ADDRESS))
+                        .addFlag(REQUEST_RETROACTIVE_PAIR)
+                        .setSeekerPublicAddress(BluetoothAddress.decode(SEEKER_ADDRESS))
+                        .build();
+
+        byte[] encryptedRawMessage =
+                AesEcbSingleBlockEncryption.encrypt(
+                        SHARED_SECRET, keyBasedPairingRequest.getBytes());
+        HandshakeRequest handshakeRequest =
+                new HandshakeRequest(SHARED_SECRET, encryptedRawMessage);
+
+        assertThat(handshakeRequest.getType())
+                .isEqualTo(HandshakeRequest.Type.KEY_BASED_PAIRING_REQUEST);
+        assertThat(handshakeRequest.requestRetroactivePair()).isTrue();
+        assertThat(handshakeRequest.getVerificationData())
+                .isEqualTo(BluetoothAddress.decode(PROVIDER_BLE_ADDRESS));
+        assertThat(handshakeRequest.getSeekerPublicAddress())
+                .isEqualTo(BluetoothAddress.decode(SEEKER_ADDRESS));
+        assertThat(handshakeRequest.requestDeviceName()).isFalse();
+        assertThat(handshakeRequest.requestDiscoverable()).isFalse();
+        assertThat(handshakeRequest.requestProviderInitialBonding()).isFalse();
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void getTimeout_notOverShortRetryMaxSpentTime_getShort() {
+        Preferences preferences = Preferences.builder().build();
+
+        assertThat(getHandshakeHandler(/* getEnable128BitCustomGattCharacteristicsId= */ true)
+                .getTimeoutMs(
+                        preferences.getSecretHandshakeShortTimeoutRetryMaxSpentTimeMs()
+                                - 1))
+                .isEqualTo(preferences.getSecretHandshakeShortTimeoutMs());
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void getTimeout_overShortRetryMaxSpentTime_getLong() {
+        Preferences preferences = Preferences.builder().build();
+
+        assertThat(getHandshakeHandler(/* getEnable128BitCustomGattCharacteristicsId= */ true)
+                .getTimeoutMs(
+                        preferences.getSecretHandshakeShortTimeoutRetryMaxSpentTimeMs()
+                                + 1))
+                .isEqualTo(preferences.getSecretHandshakeLongTimeoutMs());
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void getTimeout_retryNotEnabled_getOrigin() {
+        Preferences preferences = Preferences.builder().build();
+
+        assertThat(
+                new HandshakeHandler(
+                        createGattConnectionManager(Preferences.builder(), () -> {}),
+                        PROVIDER_BLE_ADDRESS,
+                        Preferences.builder()
+                                .setRetryGattConnectionAndSecretHandshake(false).build(),
+                        mEventLoggerWrapper,
+                        /* fastPairSignalChecker= */ null)
+                        .getTimeoutMs(0))
+                .isEqualTo(Duration.ofSeconds(
+                        preferences.getGattOperationTimeoutSeconds()).toMillis());
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void triggersActionOverBle_notCrash() {
+        HandshakeHandler.ActionOverBle.Builder actionOverBleBuilder =
+                new HandshakeHandler.ActionOverBle.Builder()
+                        .addFlag(
+                                Constants.FastPairService.KeyBasedPairingCharacteristic
+                                        .ActionOverBleFlag.ADDITIONAL_DATA_CHARACTERISTIC)
+                        .setVerificationData(BluetoothAddress.decode(RANDOM_PRIVATE_ADDRESS))
+                        .setAdditionalDataType(AdditionalDataType.PERSONALIZED_NAME)
+                        .setEvent(0, 0)
+                        .setEventAdditionalData(new byte[]{1})
+                        .getThis();
+        HandshakeHandler.ActionOverBle actionOverBle = actionOverBleBuilder.build();
+        assertThat(actionOverBle.getBytes().length).isEqualTo(16);
+        assertThat(
+                Arrays.equals(
+                        Arrays.copyOfRange(actionOverBle.getBytes(), 0, 12),
+                        new byte[]{
+                                (byte) 16, (byte)  -64, (byte) -69, (byte) -69,
+                                (byte) -69, (byte)  -69, (byte) -69, (byte) 30,
+                                (byte) 0, (byte) 0, (byte) 1, (byte) 1}))
+                .isTrue();
+    }
+
+    private GattConnectionManager createGattConnectionManager(
+            Preferences.Builder prefs, ToggleBluetoothTask toggleBluetooth) {
+        return new GattConnectionManager(
+                ApplicationProvider.getApplicationContext(),
+                prefs.build(),
+                new EventLoggerWrapper(null),
+                BluetoothAdapter.getDefaultAdapter(),
+                toggleBluetooth,
+                PROVIDER_BLE_ADDRESS,
+                new TimingLogger("GattConnectionManager", prefs.build()),
+                /* fastPairSignalChecker= */ null,
+                /* setMtu= */ false);
+    }
+
+    private HandshakeHandler getHandshakeHandler(
+            GattConnectionManager gattConnectionManager,
+            @Nullable FastPairConnection.FastPairSignalChecker fastPairSignalChecker) {
+        return new HandshakeHandler(
+                gattConnectionManager,
+                PROVIDER_BLE_ADDRESS,
+                Preferences.builder()
+                        .setGattConnectionAndSecretHandshakeNoRetryGattError(ImmutableSet.of(257))
+                        .setRetrySecretHandshakeTimeout(true)
+                        .build(),
+                mEventLoggerWrapper,
+                fastPairSignalChecker);
+    }
+
+    private HandshakeHandler getHandshakeHandler(
+            boolean getEnable128BitCustomGattCharacteristicsId) {
+        return new HandshakeHandler(
+                createGattConnectionManager(Preferences.builder(), () -> {}),
+                PROVIDER_BLE_ADDRESS,
+                Preferences.builder()
+                        .setGattOperationTimeoutSeconds(5)
+                        .setEnable128BitCustomGattCharacteristicsId(
+                                getEnable128BitCustomGattCharacteristicsId)
+                        .build(),
+                mEventLoggerWrapper,
+                /* fastPairSignalChecker= */ null);
+    }
+
+    private static class HandshakeRequest {
+
+        /**
+         * 16 bytes data: 1-byte for type, 1-byte for flags, 6-bytes for provider's BLE address, 8
+         * bytes optional data.
+         *
+         * @see {go/fast-pair-spec-handshake-message1}
+         */
+        private final byte[] mDecryptedMessage;
+
+        HandshakeRequest(byte[] key, byte[] encryptedPairingRequest)
+                throws GeneralSecurityException {
+            mDecryptedMessage = AesEcbSingleBlockEncryption.decrypt(key, encryptedPairingRequest);
+        }
+
+        /**
+         * Gets the type of this handshake request. Currently, we have 2 types: 0x00 for Key-based
+         * Pairing Request and 0x10 for Action Request.
+         */
+        public Type getType() {
+            return Type.valueOf(mDecryptedMessage[Request.TYPE_INDEX]);
+        }
+
+        /**
+         * Gets verification data of this handshake request.
+         * Currently, we use Provider's BLE address.
+         */
+        public byte[] getVerificationData() {
+            return Arrays.copyOfRange(
+                    mDecryptedMessage,
+                    Request.VERIFICATION_DATA_INDEX,
+                    Request.VERIFICATION_DATA_INDEX + Request.VERIFICATION_DATA_LENGTH);
+        }
+
+        /** Gets Seeker's public address of the handshake request. */
+        public byte[] getSeekerPublicAddress() {
+            return Arrays.copyOfRange(
+                    mDecryptedMessage,
+                    Request.SEEKER_PUBLIC_ADDRESS_INDEX,
+                    Request.SEEKER_PUBLIC_ADDRESS_INDEX + BLUETOOTH_ADDRESS_LENGTH);
+        }
+
+        /** Checks whether the Seeker request discoverability from flags byte. */
+        public boolean requestDiscoverable() {
+            return (getFlags() & REQUEST_DISCOVERABLE) != 0;
+        }
+
+        /**
+         * Checks whether the Seeker requests that the Provider shall initiate bonding from
+         * flags byte.
+         */
+        public boolean requestProviderInitialBonding() {
+            return (getFlags() & PROVIDER_INITIATES_BONDING) != 0;
+        }
+
+        /** Checks whether the Seeker requests that the Provider shall notify the existing name. */
+        public boolean requestDeviceName() {
+            return (getFlags() & REQUEST_DEVICE_NAME) != 0;
+        }
+
+        /** Checks whether this is for retroactively writing account key. */
+        public boolean requestRetroactivePair() {
+            return (getFlags() & REQUEST_RETROACTIVE_PAIR) != 0;
+        }
+
+        /** Gets the flags of this handshake request. */
+        private byte getFlags() {
+            return mDecryptedMessage[Request.FLAGS_INDEX];
+        }
+
+        /** Checks whether the Seeker requests a device action. */
+        public boolean requestDeviceAction() {
+            return (getFlags() & DEVICE_ACTION) != 0;
+        }
+
+        /**
+         * Checks whether the Seeker requests an action which will be followed by an additional
+         * data.
+         */
+        public boolean requestFollowedByAdditionalData() {
+            return (getFlags() & ADDITIONAL_DATA_CHARACTERISTIC) != 0;
+        }
+
+        /** Gets the {@link AdditionalDataType} of this handshake request. */
+        @AdditionalDataType
+        public int getAdditionalDataType() {
+            if (!requestFollowedByAdditionalData()
+                    || mDecryptedMessage.length <= ADDITIONAL_DATA_TYPE_INDEX) {
+                return AdditionalDataType.UNKNOWN;
+            }
+            return mDecryptedMessage[ADDITIONAL_DATA_TYPE_INDEX];
+        }
+
+        /** Enumerates the handshake message types. */
+        public enum Type {
+            KEY_BASED_PAIRING_REQUEST(Request.TYPE_KEY_BASED_PAIRING_REQUEST),
+            ACTION_OVER_BLE(Request.TYPE_ACTION_OVER_BLE),
+            UNKNOWN((byte) 0xFF);
+
+            private final byte mValue;
+
+            Type(byte type) {
+                mValue = type;
+            }
+
+            public static Type valueOf(byte value) {
+                for (Type type : Type.values()) {
+                    if (type.getValue() == value) {
+                        return type;
+                    }
+                }
+                return UNKNOWN;
+            }
+
+            public byte getValue() {
+                return mValue;
+            }
+        }
+    }
+}
diff --git a/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/fastpair/HeadsetPieceTest.java b/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/fastpair/HeadsetPieceTest.java
index 670b2ca..32e62a3 100644
--- a/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/fastpair/HeadsetPieceTest.java
+++ b/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/fastpair/HeadsetPieceTest.java
@@ -196,5 +196,63 @@
 
         assertThat(headsetPiece.isBatteryLow()).isFalse();
     }
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void describeContents() {
+        HeadsetPiece headsetPiece =
+                HeadsetPiece.builder()
+                        .setLowLevelThreshold(30)
+                        .setBatteryLevel(18)
+                        .setImageUrl("http://fake.image.path/image.png")
+                        .setCharging(true)
+                        .build();
+        assertThat(headsetPiece.describeContents()).isEqualTo(0);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void hashcode() {
+        HeadsetPiece headsetPiece =
+                HeadsetPiece.builder()
+                        .setLowLevelThreshold(30)
+                        .setBatteryLevel(18)
+                        .setImageUrl("http://fake.image.path/image.png")
+                        .setCharging(true)
+                        .build();
+        HeadsetPiece headsetPiece1 =
+                HeadsetPiece.builder()
+                        .setLowLevelThreshold(30)
+                        .setBatteryLevel(18)
+                        .setImageUrl("http://fake.image.path/image.png")
+                        .setCharging(true)
+                        .build();
+        assertThat(headsetPiece.hashCode()).isEqualTo(headsetPiece1.hashCode());
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testToString() {
+        HeadsetPiece headsetPiece =
+                HeadsetPiece.builder()
+                        .setLowLevelThreshold(30)
+                        .setBatteryLevel(18)
+                        .setImageUrl("http://fake.image.path/image.png")
+                        .setCharging(true)
+                        .build();
+        assertThat(headsetPiece.toString())
+                .isEqualTo("HeadsetPiece{lowLevelThreshold=30,"
+                        + " batteryLevel=18,"
+                        + " imageUrl=http://fake.image.path/image.png,"
+                        + " charging=true,"
+                        + " imageContentUri=null}");
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testCreatorNewArray() {
+        HeadsetPiece[]  headsetPieces =
+                HeadsetPiece.CREATOR.newArray(2);
+        assertThat(headsetPieces.length).isEqualTo(2);
+    }
 }
 
diff --git a/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/fastpair/LtvTest.java b/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/fastpair/LtvTest.java
new file mode 100644
index 0000000..81a5d92
--- /dev/null
+++ b/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/fastpair/LtvTest.java
@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.nearby.common.bluetooth.fastpair;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.junit.Assert.assertThrows;
+
+import android.platform.test.annotations.Presubmit;
+
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+import androidx.test.filters.SdkSuppress;
+import androidx.test.filters.SmallTest;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+/**
+ * Unit tests for {@link Ltv}.
+ */
+@Presubmit
+@SmallTest
+@RunWith(AndroidJUnit4.class)
+public class LtvTest {
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testParseEmpty_throwsException() throws Ltv.ParseException {
+        assertThrows(Ltv.ParseException.class,
+                () -> Ltv.parse(new byte[]{0}));
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testParse_finishesSuccessfully() throws Ltv.ParseException {
+        assertThat(Ltv.parse(new byte[]{3, 4, 5, 6})).isNotEmpty();
+    }
+}
diff --git a/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/fastpair/PairingProgressListenerTest.java b/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/fastpair/PairingProgressListenerTest.java
new file mode 100644
index 0000000..a58a92d
--- /dev/null
+++ b/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/fastpair/PairingProgressListenerTest.java
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.nearby.common.bluetooth.fastpair;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import org.junit.Test;
+
+public class PairingProgressListenerTest {
+
+    @Test
+    public void testFromOrdinal() {
+        assertThat(PairingProgressListener.fromOrdinal(0)).isEqualTo(
+                PairingProgressListener.PairingEvent.START);
+        assertThat(PairingProgressListener.fromOrdinal(1)).isEqualTo(
+                PairingProgressListener.PairingEvent.SUCCESS);
+        assertThat(PairingProgressListener.fromOrdinal(2)).isEqualTo(
+                PairingProgressListener.PairingEvent.FAILED);
+        assertThat(PairingProgressListener.fromOrdinal(3)).isEqualTo(
+                PairingProgressListener.PairingEvent.UNKNOWN);
+        assertThat(PairingProgressListener.fromOrdinal(4)).isEqualTo(
+                PairingProgressListener.PairingEvent.UNKNOWN);
+    }
+}
diff --git a/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/fastpair/PreferencesTest.java b/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/fastpair/PreferencesTest.java
index b40a5a5..378e3b9 100644
--- a/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/fastpair/PreferencesTest.java
+++ b/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/fastpair/PreferencesTest.java
@@ -1266,12 +1266,38 @@
     public void testExtraLoggingInformation() {
         Preferences prefs =
                 Preferences.builder().setExtraLoggingInformation(FIRST_EXTRA_LOGGING_INFO).build();
-        assertThat(prefs.getExtraLoggingInformation()).isEqualTo(FIRST_EXTRA_LOGGING_INFO);
-        assertThat(prefs.toBuilder().build().getExtraLoggingInformation())
-                .isEqualTo(FIRST_EXTRA_LOGGING_INFO);
-
         Preferences prefs2 =
                 Preferences.builder().setExtraLoggingInformation(SECOND_EXTRA_LOGGING_INFO).build();
+        Preferences prefs3 =
+                Preferences.builder().setExtraLoggingInformation(FIRST_EXTRA_LOGGING_INFO).build();
+
+        assertThat(prefs.getExtraLoggingInformation()).isEqualTo(FIRST_EXTRA_LOGGING_INFO);
         assertThat(prefs2.getExtraLoggingInformation()).isEqualTo(SECOND_EXTRA_LOGGING_INFO);
+        assertThat(prefs.toBuilder().build().getExtraLoggingInformation())
+                .isEqualTo(FIRST_EXTRA_LOGGING_INFO);
+        // Test equal()
+        assertThat(prefs.getExtraLoggingInformation().equals(null)).isFalse();
+        assertThat(prefs.getExtraLoggingInformation()
+                .equals(prefs2.getExtraLoggingInformation())).isFalse();
+        assertThat(prefs.getExtraLoggingInformation()
+                .equals(prefs3.getExtraLoggingInformation())).isTrue();
+        // Test getModelId()
+        assertThat(prefs.getExtraLoggingInformation().getModelId())
+                .isEqualTo(prefs3.getExtraLoggingInformation().getModelId());
+        assertThat(prefs.getExtraLoggingInformation().getModelId())
+                .isNotEqualTo(prefs2.getExtraLoggingInformation().getModelId());
+        // Test hashCode()
+        assertThat(prefs.getExtraLoggingInformation().hashCode())
+                .isEqualTo(prefs3.getExtraLoggingInformation().hashCode());
+        assertThat(prefs.getExtraLoggingInformation().hashCode())
+                .isNotEqualTo(prefs2.getExtraLoggingInformation().hashCode());
+        // Test toBuilder()
+
+        assertThat(prefs.getExtraLoggingInformation()
+                .toBuilder().setModelId("000007").build().getModelId())
+                .isEqualTo("000007");
+        // Test toString()
+        assertThat(prefs.getExtraLoggingInformation().toString())
+                .isEqualTo("ExtraLoggingInformation{modelId=000006}");
     }
 }
diff --git a/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/fastpair/TdsExceptionTest.java b/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/fastpair/TdsExceptionTest.java
new file mode 100644
index 0000000..e8b9480
--- /dev/null
+++ b/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/fastpair/TdsExceptionTest.java
@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.nearby.common.bluetooth.fastpair;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import com.android.server.nearby.intdefs.FastPairEventIntDefs;
+
+import org.junit.Test;
+
+public class TdsExceptionTest {
+    @Test
+    public void testGetErrorCode() {
+        TdsException tdsException = new TdsException(
+                FastPairEventIntDefs.BrEdrHandoverErrorCode.BLUETOOTH_MAC_INVALID, "format");
+        assertThat(tdsException.getErrorCode())
+                .isEqualTo(FastPairEventIntDefs.BrEdrHandoverErrorCode.BLUETOOTH_MAC_INVALID);
+
+    }
+}
diff --git a/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/testability/android/bluetooth/BluetoothAdapterTest.java b/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/testability/android/bluetooth/BluetoothAdapterTest.java
new file mode 100644
index 0000000..a9ab7da
--- /dev/null
+++ b/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/testability/android/bluetooth/BluetoothAdapterTest.java
@@ -0,0 +1,148 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.nearby.common.bluetooth.testability.android.bluetooth;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.Mockito.when;
+
+import android.platform.test.annotations.Presubmit;
+
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+import androidx.test.filters.SdkSuppress;
+import androidx.test.filters.SmallTest;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+
+/**
+ * Unit tests for {@link BluetoothAdapter}.
+ */
+@Presubmit
+@SmallTest
+@RunWith(AndroidJUnit4.class)
+public class BluetoothAdapterTest {
+
+    private static final byte[] BYTES = new byte[]{0, 1, 2, 3, 4, 5};
+    private static final String ADDRESS = "00:11:22:33:AA:BB";
+
+    @Mock private android.bluetooth.BluetoothAdapter mBluetoothAdapter;
+    @Mock private android.bluetooth.BluetoothDevice mBluetoothDevice;
+    @Mock private android.bluetooth.le.BluetoothLeAdvertiser mBluetoothLeAdvertiser;
+    @Mock private android.bluetooth.le.BluetoothLeScanner mBluetoothLeScanner;
+
+    BluetoothAdapter mTestabilityBluetoothAdapter;
+
+    @Before
+    public void setup() {
+        MockitoAnnotations.initMocks(this);
+        mTestabilityBluetoothAdapter = BluetoothAdapter.wrap(mBluetoothAdapter);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testWrapNullAdapter_isNull() {
+        assertThat(BluetoothAdapter.wrap(null)).isNull();
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testWrapNonNullAdapter_isNotNull_unWrapSame() {
+        assertThat(mTestabilityBluetoothAdapter).isNotNull();
+        assertThat(mTestabilityBluetoothAdapter.unwrap()).isSameInstanceAs(mBluetoothAdapter);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testDisable_callsWrapped() {
+        when(mBluetoothAdapter.disable()).thenReturn(true);
+        assertThat(mTestabilityBluetoothAdapter.disable()).isTrue();
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testEnable_callsWrapped() {
+        when(mBluetoothAdapter.enable()).thenReturn(true);
+        assertThat(mTestabilityBluetoothAdapter.enable()).isTrue();
+        when(mBluetoothAdapter.isEnabled()).thenReturn(true);
+        assertThat(mTestabilityBluetoothAdapter.isEnabled()).isTrue();
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testGetBluetoothLeAdvertiser_callsWrapped() {
+        when(mBluetoothAdapter.getBluetoothLeAdvertiser()).thenReturn(mBluetoothLeAdvertiser);
+        assertThat(mTestabilityBluetoothAdapter.getBluetoothLeAdvertiser().unwrap())
+                .isSameInstanceAs(mBluetoothLeAdvertiser);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testGetBluetoothLeScanner_callsWrapped() {
+        when(mBluetoothAdapter.getBluetoothLeScanner()).thenReturn(mBluetoothLeScanner);
+        assertThat(mTestabilityBluetoothAdapter.getBluetoothLeScanner().unwrap())
+                .isSameInstanceAs(mBluetoothLeScanner);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testGetBondedDevices_callsWrapped() {
+        when(mBluetoothAdapter.getBondedDevices()).thenReturn(null);
+        assertThat(mTestabilityBluetoothAdapter.getBondedDevices()).isNull();
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testIsDiscovering_pcallsWrapped() {
+        when(mBluetoothAdapter.isDiscovering()).thenReturn(true);
+        assertThat(mTestabilityBluetoothAdapter.isDiscovering()).isTrue();
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testStartDiscovery_callsWrapped() {
+        when(mBluetoothAdapter.startDiscovery()).thenReturn(true);
+        assertThat(mTestabilityBluetoothAdapter.startDiscovery()).isTrue();
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testCancelDiscovery_callsWrapped() {
+        when(mBluetoothAdapter.cancelDiscovery()).thenReturn(true);
+        assertThat(mTestabilityBluetoothAdapter.cancelDiscovery()).isTrue();
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testGetRemoteDeviceBytes_callsWrapped() {
+        when(mBluetoothAdapter.getRemoteDevice(BYTES)).thenReturn(mBluetoothDevice);
+        assertThat(mTestabilityBluetoothAdapter.getRemoteDevice(BYTES).unwrap())
+                .isSameInstanceAs(mBluetoothDevice);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testGetRemoteDeviceString_callsWrapped() {
+        when(mBluetoothAdapter.getRemoteDevice(ADDRESS)).thenReturn(mBluetoothDevice);
+        assertThat(mTestabilityBluetoothAdapter.getRemoteDevice(ADDRESS).unwrap())
+                .isSameInstanceAs(mBluetoothDevice);
+
+    }
+}
diff --git a/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/testability/android/bluetooth/BluetoothDeviceTest.java b/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/testability/android/bluetooth/BluetoothDeviceTest.java
new file mode 100644
index 0000000..d494024
--- /dev/null
+++ b/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/testability/android/bluetooth/BluetoothDeviceTest.java
@@ -0,0 +1,206 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.nearby.common.bluetooth.testability.android.bluetooth;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.Mockito.when;
+
+import android.content.Context;
+import android.platform.test.annotations.Presubmit;
+
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+import androidx.test.filters.SdkSuppress;
+import androidx.test.filters.SmallTest;
+import androidx.test.platform.app.InstrumentationRegistry;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+
+import java.io.IOException;
+import java.util.UUID;
+
+/**
+ * Unit tests for {@link BluetoothDevice}.
+ */
+@Presubmit
+@SmallTest
+@RunWith(AndroidJUnit4.class)
+public class BluetoothDeviceTest {
+    private static final UUID UUID_CONST = UUID.randomUUID();
+    private static final String ADDRESS = "ADDRESS";
+    private static final String STRING = "STRING";
+
+    @Mock private android.bluetooth.BluetoothDevice mBluetoothDevice;
+    @Mock private android.bluetooth.BluetoothGatt mBluetoothGatt;
+    @Mock private android.bluetooth.BluetoothSocket mBluetoothSocket;
+    @Mock private android.bluetooth.BluetoothClass mBluetoothClass;
+
+    BluetoothDevice mTestabilityBluetoothDevice;
+    BluetoothGattCallback mTestBluetoothGattCallback;
+    Context mContext;
+
+    @Before
+    public void setup() {
+        MockitoAnnotations.initMocks(this);
+        mTestabilityBluetoothDevice = BluetoothDevice.wrap(mBluetoothDevice);
+        mTestBluetoothGattCallback = new TestBluetoothGattCallback();
+        mContext = InstrumentationRegistry.getInstrumentation().getContext();
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testWrapNonNullAdapter_isNotNull_unWrapSame() {
+        assertThat(mTestabilityBluetoothDevice).isNotNull();
+        assertThat(mTestabilityBluetoothDevice.unwrap()).isSameInstanceAs(mBluetoothDevice);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testEquality_asExpected() {
+        assertThat(mTestabilityBluetoothDevice.equals(null)).isFalse();
+        assertThat(mTestabilityBluetoothDevice.equals(mTestabilityBluetoothDevice)).isTrue();
+        assertThat(mTestabilityBluetoothDevice.equals(BluetoothDevice.wrap(mBluetoothDevice)))
+                .isTrue();
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testHashCode_asExpected() {
+        assertThat(mTestabilityBluetoothDevice.hashCode())
+                .isEqualTo(BluetoothDevice.wrap(mBluetoothDevice).hashCode());
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testConnectGattWithThreeParameters_callsWrapped() {
+        when(mBluetoothDevice
+                .connectGatt(mContext, true, mTestBluetoothGattCallback.unwrap()))
+                .thenReturn(mBluetoothGatt);
+        assertThat(mTestabilityBluetoothDevice
+                .connectGatt(mContext, true, mTestBluetoothGattCallback)
+                .unwrap())
+                .isSameInstanceAs(mBluetoothGatt);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testConnectGattWithFourParameters_callsWrapped() {
+        when(mBluetoothDevice
+                .connectGatt(mContext, true, mTestBluetoothGattCallback.unwrap(), 1))
+                .thenReturn(mBluetoothGatt);
+        assertThat(mTestabilityBluetoothDevice
+                .connectGatt(mContext, true, mTestBluetoothGattCallback, 1)
+                .unwrap())
+                .isSameInstanceAs(mBluetoothGatt);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testCreateRfcommSocketToServiceRecord_callsWrapped() throws IOException {
+        when(mBluetoothDevice.createRfcommSocketToServiceRecord(UUID_CONST))
+                .thenReturn(mBluetoothSocket);
+        assertThat(mTestabilityBluetoothDevice.createRfcommSocketToServiceRecord(UUID_CONST))
+                .isSameInstanceAs(mBluetoothSocket);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testCreateInsecureRfcommSocketToServiceRecord_callsWrapped() throws IOException {
+        when(mBluetoothDevice.createInsecureRfcommSocketToServiceRecord(UUID_CONST))
+                .thenReturn(mBluetoothSocket);
+        assertThat(mTestabilityBluetoothDevice
+                .createInsecureRfcommSocketToServiceRecord(UUID_CONST))
+                .isSameInstanceAs(mBluetoothSocket);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testSetPairingConfirmation_callsWrapped() throws IOException {
+        when(mBluetoothDevice.setPairingConfirmation(true)).thenReturn(true);
+        assertThat(mTestabilityBluetoothDevice.setPairingConfirmation(true)).isTrue();
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testFetchUuidsWithSdp_callsWrapped() throws IOException {
+        when(mBluetoothDevice.fetchUuidsWithSdp()).thenReturn(true);
+        assertThat(mTestabilityBluetoothDevice.fetchUuidsWithSdp()).isTrue();
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testCreateBond_callsWrapped() throws IOException {
+        when(mBluetoothDevice.createBond()).thenReturn(true);
+        assertThat(mTestabilityBluetoothDevice.createBond()).isTrue();
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testGetUuids_callsWrapped() throws IOException {
+        when(mBluetoothDevice.getUuids()).thenReturn(null);
+        assertThat(mTestabilityBluetoothDevice.getUuids()).isNull();
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testGetBondState_callsWrapped() throws IOException {
+        when(mBluetoothDevice.getBondState()).thenReturn(1);
+        assertThat(mTestabilityBluetoothDevice.getBondState()).isEqualTo(1);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testGetAddress_callsWrapped() throws IOException {
+        when(mBluetoothDevice.getAddress()).thenReturn(ADDRESS);
+        assertThat(mTestabilityBluetoothDevice.getAddress()).isSameInstanceAs(ADDRESS);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testGetBluetoothClass_callsWrapped() throws IOException {
+        when(mBluetoothDevice.getBluetoothClass()).thenReturn(mBluetoothClass);
+        assertThat(mTestabilityBluetoothDevice.getBluetoothClass())
+                .isSameInstanceAs(mBluetoothClass);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testGetType_callsWrapped() throws IOException {
+        when(mBluetoothDevice.getType()).thenReturn(1);
+        assertThat(mTestabilityBluetoothDevice.getType()).isEqualTo(1);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testGetName_callsWrapped() throws IOException {
+        when(mBluetoothDevice.getName()).thenReturn(STRING);
+        assertThat(mTestabilityBluetoothDevice.getName()).isSameInstanceAs(STRING);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testToString_callsWrapped() {
+        when(mBluetoothDevice.toString()).thenReturn(STRING);
+        assertThat(mTestabilityBluetoothDevice.toString()).isSameInstanceAs(STRING);
+    }
+
+    private static class TestBluetoothGattCallback extends BluetoothGattCallback {}
+}
diff --git a/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/testability/android/bluetooth/BluetoothGattCallbackTest.java b/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/testability/android/bluetooth/BluetoothGattCallbackTest.java
new file mode 100644
index 0000000..26ae6d7
--- /dev/null
+++ b/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/testability/android/bluetooth/BluetoothGattCallbackTest.java
@@ -0,0 +1,98 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.nearby.common.bluetooth.testability.android.bluetooth;
+
+import android.platform.test.annotations.Presubmit;
+
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+import androidx.test.filters.SmallTest;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+
+/**
+ * Unit tests for {@link BluetoothGattCallback}.
+ */
+@Presubmit
+@SmallTest
+@RunWith(AndroidJUnit4.class)
+public class BluetoothGattCallbackTest {
+    @Mock private android.bluetooth.BluetoothGatt mBluetoothGatt;
+    @Mock private android.bluetooth.BluetoothGattCharacteristic mBluetoothGattCharacteristic;
+    @Mock private android.bluetooth.BluetoothGattDescriptor mBluetoothGattDescriptor;
+
+    TestBluetoothGattCallback mTestBluetoothGattCallback = new TestBluetoothGattCallback();
+
+    @Test
+    public void testOnConnectionStateChange_notCrash() {
+        mTestBluetoothGattCallback.unwrap()
+                .onConnectionStateChange(mBluetoothGatt, 1, 1);
+    }
+
+    @Test
+    public void testOnServiceDiscovered_notCrash() {
+        mTestBluetoothGattCallback.unwrap().onServicesDiscovered(mBluetoothGatt, 1);
+    }
+
+    @Test
+    public void testOnCharacteristicRead_notCrash() {
+        mTestBluetoothGattCallback.unwrap().onCharacteristicRead(mBluetoothGatt,
+                mBluetoothGattCharacteristic, 1);
+    }
+
+    @Test
+    public void testOnCharacteristicWrite_notCrash() {
+        mTestBluetoothGattCallback.unwrap().onCharacteristicWrite(mBluetoothGatt,
+                mBluetoothGattCharacteristic, 1);
+    }
+
+    @Test
+    public void testOnDescriptionRead_notCrash() {
+        mTestBluetoothGattCallback.unwrap().onDescriptorRead(mBluetoothGatt,
+                mBluetoothGattDescriptor, 1);
+    }
+
+    @Test
+    public void testOnDescriptionWrite_notCrash() {
+        mTestBluetoothGattCallback.unwrap().onDescriptorWrite(mBluetoothGatt,
+                mBluetoothGattDescriptor, 1);
+    }
+
+    @Test
+    public void testOnReadRemoteRssi_notCrash() {
+        mTestBluetoothGattCallback.unwrap().onReadRemoteRssi(mBluetoothGatt, 1, 1);
+    }
+
+    @Test
+    public void testOnReliableWriteCompleted_notCrash() {
+        mTestBluetoothGattCallback.unwrap().onReliableWriteCompleted(mBluetoothGatt, 1);
+    }
+
+    @Test
+    public void testOnMtuChanged_notCrash() {
+        mTestBluetoothGattCallback.unwrap().onMtuChanged(mBluetoothGatt, 1, 1);
+    }
+
+    @Test
+    public void testOnCharacteristicChanged_notCrash() {
+        mTestBluetoothGattCallback.unwrap()
+                .onCharacteristicChanged(mBluetoothGatt, mBluetoothGattCharacteristic);
+    }
+
+    private static class TestBluetoothGattCallback extends BluetoothGattCallback { }
+}
diff --git a/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/testability/android/bluetooth/BluetoothGattServerCallbackTest.java b/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/testability/android/bluetooth/BluetoothGattServerCallbackTest.java
new file mode 100644
index 0000000..fb99317
--- /dev/null
+++ b/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/testability/android/bluetooth/BluetoothGattServerCallbackTest.java
@@ -0,0 +1,121 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.nearby.common.bluetooth.testability.android.bluetooth;
+
+import android.platform.test.annotations.Presubmit;
+
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+import androidx.test.filters.SmallTest;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+
+/**
+ * Unit tests for {@link BluetoothGattServerCallback}.
+ */
+@Presubmit
+@SmallTest
+@RunWith(AndroidJUnit4.class)
+public class BluetoothGattServerCallbackTest {
+    @Mock
+    private android.bluetooth.BluetoothDevice mBluetoothDevice;
+    @Mock
+    private android.bluetooth.BluetoothGattService mBluetoothGattService;
+    @Mock
+    private android.bluetooth.BluetoothGattCharacteristic mBluetoothGattCharacteristic;
+    @Mock
+    private android.bluetooth.BluetoothGattDescriptor mBluetoothGattDescriptor;
+
+    TestBluetoothGattServerCallback
+            mTestBluetoothGattServerCallback = new TestBluetoothGattServerCallback();
+
+    @Test
+    public void testOnCharacteristicReadRequest_notCrash() {
+        mTestBluetoothGattServerCallback.unwrap().onCharacteristicReadRequest(
+                mBluetoothDevice, 1, 1, mBluetoothGattCharacteristic);
+    }
+
+    @Test
+    public void testOnCharacteristicWriteRequest_notCrash() {
+        mTestBluetoothGattServerCallback.unwrap().onCharacteristicWriteRequest(
+                mBluetoothDevice,
+                1,
+                mBluetoothGattCharacteristic,
+                false,
+                true,
+                1,
+                new byte[]{1});
+    }
+
+    @Test
+    public void testOnConnectionStateChange_notCrash() {
+        mTestBluetoothGattServerCallback.unwrap().onConnectionStateChange(
+                mBluetoothDevice,
+                1,
+                2);
+    }
+
+    @Test
+    public void testOnDescriptorReadRequest_notCrash() {
+        mTestBluetoothGattServerCallback.unwrap().onDescriptorReadRequest(
+                mBluetoothDevice,
+                1,
+                2, mBluetoothGattDescriptor);
+    }
+
+    @Test
+    public void testOnDescriptorWriteRequest_notCrash() {
+        mTestBluetoothGattServerCallback.unwrap().onDescriptorWriteRequest(
+                mBluetoothDevice,
+                1,
+                mBluetoothGattDescriptor,
+                false,
+                true,
+                2,
+                new byte[]{1});
+    }
+
+    @Test
+    public void testOnExecuteWrite_notCrash() {
+        mTestBluetoothGattServerCallback.unwrap().onExecuteWrite(
+                mBluetoothDevice,
+                1,
+                false);
+    }
+
+    @Test
+    public void testOnMtuChanged_notCrash() {
+        mTestBluetoothGattServerCallback.unwrap().onMtuChanged(
+                mBluetoothDevice,
+                1);
+    }
+
+    @Test
+    public void testOnNotificationSent_notCrash() {
+        mTestBluetoothGattServerCallback.unwrap().onNotificationSent(
+                mBluetoothDevice,
+                1);
+    }
+
+    @Test
+    public void testOnServiceAdded_notCrash() {
+        mTestBluetoothGattServerCallback.unwrap().onServiceAdded(1, mBluetoothGattService);
+    }
+
+    private static class TestBluetoothGattServerCallback extends BluetoothGattServerCallback { }
+}
diff --git a/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/testability/android/bluetooth/BluetoothGattServerTest.java b/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/testability/android/bluetooth/BluetoothGattServerTest.java
new file mode 100644
index 0000000..48283d1
--- /dev/null
+++ b/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/testability/android/bluetooth/BluetoothGattServerTest.java
@@ -0,0 +1,149 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.nearby.common.bluetooth.testability.android.bluetooth;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.Mockito.doNothing;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import android.platform.test.annotations.Presubmit;
+
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+import androidx.test.filters.SdkSuppress;
+import androidx.test.filters.SmallTest;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+
+import java.util.UUID;
+
+/**
+ * Unit tests for {@link BluetoothGattServer}.
+ */
+@Presubmit
+@SmallTest
+@RunWith(AndroidJUnit4.class)
+public class BluetoothGattServerTest {
+    private static final UUID UUID_CONST = UUID.randomUUID();
+    private static final byte[] BYTES = new byte[]{1, 2, 3};
+
+    @Mock private android.bluetooth.BluetoothDevice mBluetoothDevice;
+    @Mock private android.bluetooth.BluetoothGattServer mBluetoothGattServer;
+    @Mock private android.bluetooth.BluetoothGattService mBluetoothGattService;
+    @Mock private android.bluetooth.BluetoothGattCharacteristic mBluetoothGattCharacteristic;
+
+    BluetoothGattServer mTestabilityBluetoothGattServer;
+
+    @Before
+    public void setup() {
+        MockitoAnnotations.initMocks(this);
+        mTestabilityBluetoothGattServer = BluetoothGattServer.wrap(mBluetoothGattServer);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testWrapNonNullAdapter_isNotNull_unWrapSame() {
+        assertThat(mTestabilityBluetoothGattServer).isNotNull();
+        assertThat(mTestabilityBluetoothGattServer.unwrap()).isSameInstanceAs(mBluetoothGattServer);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testConnect_callsWrapped() {
+        when(mBluetoothGattServer
+                .connect(mBluetoothDevice, true))
+                .thenReturn(true);
+        assertThat(mTestabilityBluetoothGattServer
+                .connect(BluetoothDevice.wrap(mBluetoothDevice), true))
+                .isTrue();
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testAddService_callsWrapped() {
+        when(mBluetoothGattServer
+                .addService(mBluetoothGattService))
+                .thenReturn(true);
+        assertThat(mTestabilityBluetoothGattServer
+                .addService(mBluetoothGattService))
+                .isTrue();
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testClearServices_callsWrapped() {
+        doNothing().when(mBluetoothGattServer).clearServices();
+        mTestabilityBluetoothGattServer.clearServices();
+        verify(mBluetoothGattServer).clearServices();
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testClose_callsWrapped() {
+        doNothing().when(mBluetoothGattServer).close();
+        mTestabilityBluetoothGattServer.close();
+        verify(mBluetoothGattServer).close();
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testNotifyCharacteristicChanged_callsWrapped() {
+        when(mBluetoothGattServer
+                .notifyCharacteristicChanged(
+                        mBluetoothDevice,
+                        mBluetoothGattCharacteristic,
+                        true))
+                .thenReturn(true);
+        assertThat(mTestabilityBluetoothGattServer
+                .notifyCharacteristicChanged(
+                        BluetoothDevice.wrap(mBluetoothDevice),
+                        mBluetoothGattCharacteristic,
+                        true))
+                .isTrue();
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testSendResponse_callsWrapped() {
+        when(mBluetoothGattServer.sendResponse(
+                mBluetoothDevice, 1, 1, 1, BYTES)).thenReturn(true);
+        mTestabilityBluetoothGattServer.sendResponse(
+                BluetoothDevice.wrap(mBluetoothDevice), 1, 1, 1, BYTES);
+        verify(mBluetoothGattServer).sendResponse(
+                mBluetoothDevice, 1, 1, 1, BYTES);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testCancelConnection_callsWrapped() {
+        doNothing().when(mBluetoothGattServer).cancelConnection(mBluetoothDevice);
+        mTestabilityBluetoothGattServer.cancelConnection(BluetoothDevice.wrap(mBluetoothDevice));
+        verify(mBluetoothGattServer).cancelConnection(mBluetoothDevice);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testGetService_callsWrapped() {
+        when(mBluetoothGattServer.getService(UUID_CONST)).thenReturn(null);
+        assertThat(mTestabilityBluetoothGattServer.getService(UUID_CONST)).isNull();
+    }
+}
diff --git a/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/testability/android/bluetooth/BluetoothGattWrapperTest.java b/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/testability/android/bluetooth/BluetoothGattWrapperTest.java
new file mode 100644
index 0000000..a03a255
--- /dev/null
+++ b/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/testability/android/bluetooth/BluetoothGattWrapperTest.java
@@ -0,0 +1,190 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.nearby.common.bluetooth.testability.android.bluetooth;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.Mockito.doNothing;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import android.platform.test.annotations.Presubmit;
+
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+import androidx.test.filters.SdkSuppress;
+import androidx.test.filters.SmallTest;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+
+import java.util.UUID;
+
+/**
+ * Unit tests for {@link BluetoothGattWrapper}.
+ */
+@Presubmit
+@SmallTest
+@RunWith(AndroidJUnit4.class)
+public class BluetoothGattWrapperTest {
+    private static final UUID UUID_CONST = UUID.randomUUID();
+    private static final byte[] BYTES = new byte[]{1, 2, 3};
+
+    @Mock private android.bluetooth.BluetoothDevice mBluetoothDevice;
+    @Mock private android.bluetooth.BluetoothGatt mBluetoothGatt;
+    @Mock private android.bluetooth.BluetoothGattService mBluetoothGattService;
+    @Mock private android.bluetooth.BluetoothGattCharacteristic mBluetoothGattCharacteristic;
+    @Mock private android.bluetooth.BluetoothGattDescriptor mBluetoothGattDescriptor;
+
+    BluetoothGattWrapper mBluetoothGattWrapper;
+
+    @Before
+    public void setup() {
+        MockitoAnnotations.initMocks(this);
+        mBluetoothGattWrapper = BluetoothGattWrapper.wrap(mBluetoothGatt);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testWrapNonNullAdapter_isNotNull_unWrapSame() {
+        assertThat(mBluetoothGattWrapper).isNotNull();
+        assertThat(mBluetoothGattWrapper.unwrap()).isSameInstanceAs(mBluetoothGatt);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testEquality_asExpected() {
+        assertThat(mBluetoothGattWrapper.equals(null)).isFalse();
+        assertThat(mBluetoothGattWrapper.equals(mBluetoothGattWrapper)).isTrue();
+        assertThat(mBluetoothGattWrapper.equals(BluetoothGattWrapper.wrap(mBluetoothGatt)))
+                .isTrue();
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testGetDevice_callsWrapped() {
+        when(mBluetoothGatt.getDevice()).thenReturn(mBluetoothDevice);
+        assertThat(mBluetoothGattWrapper.getDevice().unwrap()).isSameInstanceAs(mBluetoothDevice);
+    }
+
+    @Test
+    public void testHashCode_asExpected() {
+        assertThat(mBluetoothGattWrapper.hashCode())
+                .isEqualTo(BluetoothGattWrapper.wrap(mBluetoothGatt).hashCode());
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testGetServices_callsWrapped() {
+        when(mBluetoothGatt.getServices()).thenReturn(null);
+        assertThat(mBluetoothGattWrapper.getServices()).isNull();
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testGetService_callsWrapped() {
+        when(mBluetoothGatt.getService(UUID_CONST)).thenReturn(mBluetoothGattService);
+        assertThat(mBluetoothGattWrapper.getService(UUID_CONST))
+                .isSameInstanceAs(mBluetoothGattService);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testDiscoverServices_callsWrapped() {
+        when(mBluetoothGatt.discoverServices()).thenReturn(true);
+        assertThat(mBluetoothGattWrapper.discoverServices()).isTrue();
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testReadCharacteristic_callsWrapped() {
+        when(mBluetoothGatt.readCharacteristic(mBluetoothGattCharacteristic)).thenReturn(true);
+        assertThat(mBluetoothGattWrapper.readCharacteristic(mBluetoothGattCharacteristic)).isTrue();
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testWriteCharacteristic_callsWrapped() {
+        when(mBluetoothGatt.writeCharacteristic(mBluetoothGattCharacteristic, BYTES, 1))
+                .thenReturn(1);
+        assertThat(mBluetoothGattWrapper.writeCharacteristic(
+                mBluetoothGattCharacteristic, BYTES, 1)).isEqualTo(1);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testReadDescriptor_callsWrapped() {
+        when(mBluetoothGatt.readDescriptor(mBluetoothGattDescriptor)).thenReturn(false);
+        assertThat(mBluetoothGattWrapper.readDescriptor(mBluetoothGattDescriptor)).isFalse();
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testWriteDescriptor_callsWrapped() {
+        when(mBluetoothGatt.writeDescriptor(mBluetoothGattDescriptor, BYTES)).thenReturn(5);
+        assertThat(mBluetoothGattWrapper.writeDescriptor(mBluetoothGattDescriptor, BYTES))
+                .isEqualTo(5);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testReadRemoteRssi_callsWrapped() {
+        when(mBluetoothGatt.readRemoteRssi()).thenReturn(false);
+        assertThat(mBluetoothGattWrapper.readRemoteRssi()).isFalse();
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testRequestConnectionPriority_callsWrapped() {
+        when(mBluetoothGatt.requestConnectionPriority(5)).thenReturn(false);
+        assertThat(mBluetoothGattWrapper.requestConnectionPriority(5)).isFalse();
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testRequestMtu_callsWrapped() {
+        when(mBluetoothGatt.requestMtu(5)).thenReturn(false);
+        assertThat(mBluetoothGattWrapper.requestMtu(5)).isFalse();
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testSetCharacteristicNotification_callsWrapped() {
+        when(mBluetoothGatt.setCharacteristicNotification(mBluetoothGattCharacteristic, true))
+                .thenReturn(false);
+        assertThat(mBluetoothGattWrapper
+                .setCharacteristicNotification(mBluetoothGattCharacteristic, true)).isFalse();
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testDisconnect_callsWrapped() {
+        doNothing().when(mBluetoothGatt).disconnect();
+        mBluetoothGattWrapper.disconnect();
+        verify(mBluetoothGatt).disconnect();
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testClose_callsWrapped() {
+        doNothing().when(mBluetoothGatt).close();
+        mBluetoothGattWrapper.close();
+        verify(mBluetoothGatt).close();
+    }
+}
diff --git a/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/testability/android/bluetooth/le/BluetoothAdvertiserTest.java b/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/testability/android/bluetooth/le/BluetoothAdvertiserTest.java
new file mode 100644
index 0000000..8468ed1
--- /dev/null
+++ b/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/testability/android/bluetooth/le/BluetoothAdvertiserTest.java
@@ -0,0 +1,101 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.nearby.common.bluetooth.testability.android.bluetooth.le;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.Mockito.doNothing;
+import static org.mockito.Mockito.verify;
+
+import android.bluetooth.le.AdvertiseCallback;
+import android.bluetooth.le.AdvertiseData;
+import android.bluetooth.le.AdvertiseSettings;
+import android.platform.test.annotations.Presubmit;
+
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+import androidx.test.filters.SdkSuppress;
+import androidx.test.filters.SmallTest;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+
+/**
+ * Unit tests for {@link BluetoothLeAdvertiser}.
+ */
+@Presubmit
+@SmallTest
+@RunWith(AndroidJUnit4.class)
+public class BluetoothAdvertiserTest {
+    @Mock android.bluetooth.le.BluetoothLeAdvertiser mWrappedBluetoothLeAdvertiser;
+    @Mock AdvertiseSettings mAdvertiseSettings;
+    @Mock AdvertiseData mAdvertiseData;
+    @Mock AdvertiseCallback mAdvertiseCallback;
+
+    BluetoothLeAdvertiser mBluetoothLeAdvertiser;
+
+    @Before
+    public void setup() {
+        MockitoAnnotations.initMocks(this);
+        mBluetoothLeAdvertiser = BluetoothLeAdvertiser.wrap(mWrappedBluetoothLeAdvertiser);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testWrapNullAdapter_isNull() {
+        assertThat(BluetoothLeAdvertiser.wrap(null)).isNull();
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testWrapNonNullAdapter_isNotNull_unWrapSame() {
+        assertThat(mWrappedBluetoothLeAdvertiser).isNotNull();
+        assertThat(mBluetoothLeAdvertiser.unwrap()).isSameInstanceAs(mWrappedBluetoothLeAdvertiser);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testStartAdvertisingThreeParameters_callsWrapped() {
+        doNothing().when(mWrappedBluetoothLeAdvertiser)
+                .startAdvertising(mAdvertiseSettings, mAdvertiseData, mAdvertiseCallback);
+        mBluetoothLeAdvertiser
+                .startAdvertising(mAdvertiseSettings, mAdvertiseData, mAdvertiseCallback);
+        verify(mWrappedBluetoothLeAdvertiser).startAdvertising(
+                mAdvertiseSettings, mAdvertiseData, mAdvertiseCallback);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testStartAdvertisingFourParameters_callsWrapped() {
+        doNothing().when(mWrappedBluetoothLeAdvertiser).startAdvertising(
+                mAdvertiseSettings, mAdvertiseData, mAdvertiseData, mAdvertiseCallback);
+        mBluetoothLeAdvertiser.startAdvertising(
+                mAdvertiseSettings, mAdvertiseData, mAdvertiseData, mAdvertiseCallback);
+        verify(mWrappedBluetoothLeAdvertiser).startAdvertising(
+                mAdvertiseSettings, mAdvertiseData, mAdvertiseData, mAdvertiseCallback);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testStopAdvertising_callsWrapped() {
+        doNothing().when(mWrappedBluetoothLeAdvertiser).stopAdvertising(mAdvertiseCallback);
+        mBluetoothLeAdvertiser.stopAdvertising(mAdvertiseCallback);
+        verify(mWrappedBluetoothLeAdvertiser).stopAdvertising(mAdvertiseCallback);
+    }
+}
diff --git a/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/testability/android/bluetooth/le/BluetoothLeScannerTest.java b/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/testability/android/bluetooth/le/BluetoothLeScannerTest.java
new file mode 100644
index 0000000..3fce54f
--- /dev/null
+++ b/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/testability/android/bluetooth/le/BluetoothLeScannerTest.java
@@ -0,0 +1,123 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.nearby.common.bluetooth.testability.android.bluetooth.le;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.Mockito.doNothing;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import android.app.PendingIntent;
+import android.bluetooth.le.ScanFilter;
+import android.bluetooth.le.ScanSettings;
+import android.platform.test.annotations.Presubmit;
+
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+import androidx.test.filters.SdkSuppress;
+import androidx.test.filters.SmallTest;
+
+import com.google.common.collect.ImmutableList;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+
+/**
+ * Unit tests for {@link BluetoothLeScanner}.
+ */
+@Presubmit
+@SmallTest
+@RunWith(AndroidJUnit4.class)
+public class BluetoothLeScannerTest {
+    @Mock android.bluetooth.le.BluetoothLeScanner mWrappedBluetoothLeScanner;
+    @Mock PendingIntent mPendingIntent;
+    @Mock ScanSettings mScanSettings;
+    @Mock ScanFilter mScanFilter;
+
+    TestScanCallback mTestScanCallback = new TestScanCallback();
+    BluetoothLeScanner mBluetoothLeScanner;
+    ImmutableList<ScanFilter> mImmutableScanFilterList;
+
+    @Before
+    public void setup() {
+        MockitoAnnotations.initMocks(this);
+        mBluetoothLeScanner = BluetoothLeScanner.wrap(mWrappedBluetoothLeScanner);
+        mImmutableScanFilterList = ImmutableList.of(mScanFilter);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testWrapNullAdapter_isNull() {
+        assertThat(BluetoothLeAdvertiser.wrap(null)).isNull();
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testWrapNonNullAdapter_isNotNull_unWrapSame() {
+        assertThat(mWrappedBluetoothLeScanner).isNotNull();
+        assertThat(mBluetoothLeScanner.unwrap()).isSameInstanceAs(mWrappedBluetoothLeScanner);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testStartScan_callsWrapped() {
+        doNothing().when(mWrappedBluetoothLeScanner).startScan(mTestScanCallback.unwrap());
+        mBluetoothLeScanner.startScan(mTestScanCallback);
+        verify(mWrappedBluetoothLeScanner).startScan(mTestScanCallback.unwrap());
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testStartScanWithFiltersCallback_callsWrapped() {
+        doNothing().when(mWrappedBluetoothLeScanner)
+                .startScan(mImmutableScanFilterList, mScanSettings, mTestScanCallback.unwrap());
+        mBluetoothLeScanner.startScan(mImmutableScanFilterList, mScanSettings, mTestScanCallback);
+        verify(mWrappedBluetoothLeScanner)
+                .startScan(mImmutableScanFilterList, mScanSettings, mTestScanCallback.unwrap());
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testStartScanWithFiltersCallbackIntent_callsWrapped() {
+        when(mWrappedBluetoothLeScanner.startScan(
+                mImmutableScanFilterList, mScanSettings, mPendingIntent)).thenReturn(1);
+        mBluetoothLeScanner.startScan(mImmutableScanFilterList, mScanSettings, mPendingIntent);
+        verify(mWrappedBluetoothLeScanner)
+                .startScan(mImmutableScanFilterList, mScanSettings, mPendingIntent);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testStopScan_callsWrapped() {
+        doNothing().when(mWrappedBluetoothLeScanner).stopScan(mTestScanCallback.unwrap());
+        mBluetoothLeScanner.stopScan(mTestScanCallback);
+        verify(mWrappedBluetoothLeScanner).stopScan(mTestScanCallback.unwrap());
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testStopScanPendingIntent_callsWrapped() {
+        doNothing().when(mWrappedBluetoothLeScanner).stopScan(mPendingIntent);
+        mBluetoothLeScanner.stopScan(mPendingIntent);
+        verify(mWrappedBluetoothLeScanner).stopScan(mPendingIntent);
+    }
+
+    private static class TestScanCallback extends ScanCallback {};
+}
diff --git a/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/testability/android/bluetooth/le/ScanCallbackTest.java b/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/testability/android/bluetooth/le/ScanCallbackTest.java
new file mode 100644
index 0000000..6d68486
--- /dev/null
+++ b/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/testability/android/bluetooth/le/ScanCallbackTest.java
@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.nearby.common.bluetooth.testability.android.bluetooth.le;
+
+import android.platform.test.annotations.Presubmit;
+
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+import androidx.test.filters.SmallTest;
+
+import com.google.common.collect.ImmutableList;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+
+/**
+ * Unit tests for {@link ScanCallback}.
+ */
+@Presubmit
+@SmallTest
+@RunWith(AndroidJUnit4.class)
+public class ScanCallbackTest {
+    @Mock android.bluetooth.le.ScanResult mScanResult;
+
+    TestScanCallback mTestScanCallback = new TestScanCallback();
+
+    @Before
+    public void setup() {
+        MockitoAnnotations.initMocks(this);
+    }
+
+    @Test
+    public void testOnScanFailed_notCrash() {
+        mTestScanCallback.unwrap().onScanFailed(1);
+    }
+
+    @Test
+    public void testOnScanResult_notCrash() {
+        mTestScanCallback.unwrap().onScanResult(1, mScanResult);
+    }
+
+    @Test
+    public void testOnBatchScanResult_notCrash() {
+        mTestScanCallback.unwrap().onBatchScanResults(ImmutableList.of(mScanResult));
+    }
+
+    private static class TestScanCallback extends ScanCallback { }
+}
diff --git a/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/testability/android/bluetooth/le/ScanResultTest.java b/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/testability/android/bluetooth/le/ScanResultTest.java
new file mode 100644
index 0000000..255c178
--- /dev/null
+++ b/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/testability/android/bluetooth/le/ScanResultTest.java
@@ -0,0 +1,76 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.nearby.common.bluetooth.testability.android.bluetooth.le;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.Mockito.when;
+
+import android.platform.test.annotations.Presubmit;
+
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+import androidx.test.filters.SmallTest;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+
+/**
+ * Unit tests for {@link ScanResult}.
+ */
+@Presubmit
+@SmallTest
+@RunWith(AndroidJUnit4.class)
+public class ScanResultTest {
+
+    @Mock android.bluetooth.le.ScanResult mWrappedScanResult;
+    @Mock android.bluetooth.le.ScanRecord mScanRecord;
+    @Mock android.bluetooth.BluetoothDevice mBluetoothDevice;
+    ScanResult mScanResult;
+
+    @Before
+    public void setup() {
+        MockitoAnnotations.initMocks(this);
+        mScanResult = ScanResult.wrap(mWrappedScanResult);
+    }
+
+    @Test
+    public void testGetScanRecord_calledWrapped() {
+        when(mWrappedScanResult.getScanRecord()).thenReturn(mScanRecord);
+        assertThat(mScanResult.getScanRecord()).isSameInstanceAs(mScanRecord);
+    }
+
+    @Test
+    public void testGetRssi_calledWrapped() {
+        when(mWrappedScanResult.getRssi()).thenReturn(3);
+        assertThat(mScanResult.getRssi()).isEqualTo(3);
+    }
+
+    @Test
+    public void testGetTimestampNanos_calledWrapped() {
+        when(mWrappedScanResult.getTimestampNanos()).thenReturn(4L);
+        assertThat(mScanResult.getTimestampNanos()).isEqualTo(4L);
+    }
+
+    @Test
+    public void testGetDevice_calledWrapped() {
+        when(mWrappedScanResult.getDevice()).thenReturn(mBluetoothDevice);
+        assertThat(mScanResult.getDevice().unwrap()).isSameInstanceAs(mBluetoothDevice);
+    }
+}
diff --git a/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/util/BluetoothGattUtilsTest.java b/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/util/BluetoothGattUtilsTest.java
index 47182c3..7535c06 100644
--- a/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/util/BluetoothGattUtilsTest.java
+++ b/nearby/tests/unit/src/com/android/server/nearby/common/bluetooth/util/BluetoothGattUtilsTest.java
@@ -34,14 +34,12 @@
 
 import java.lang.reflect.Field;
 import java.lang.reflect.Modifier;
-import java.util.UUID;
 
 /** Unit tests for {@link BluetoothGattUtils}. */
 @Presubmit
 @SmallTest
 @RunWith(AndroidJUnit4.class)
 public class BluetoothGattUtilsTest {
-    private static final UUID TEST_UUID = UUID.randomUUID();
     private static final ImmutableSet<String> GATT_HIDDEN_CONSTANTS = ImmutableSet.of(
             "GATT_WRITE_REQUEST_BUSY", "GATT_WRITE_REQUEST_FAIL", "GATT_WRITE_REQUEST_SUCCESS");
 
diff --git a/nearby/tests/unit/src/com/android/server/nearby/common/eventloop/EventLoopTest.java b/nearby/tests/unit/src/com/android/server/nearby/common/eventloop/EventLoopTest.java
index 70dcec8..bebb2f2 100644
--- a/nearby/tests/unit/src/com/android/server/nearby/common/eventloop/EventLoopTest.java
+++ b/nearby/tests/unit/src/com/android/server/nearby/common/eventloop/EventLoopTest.java
@@ -36,7 +36,6 @@
     @Rule
     public ExpectedException thrown = ExpectedException.none();
 
-    /*
     @Test
     public void remove() {
         mEventLoop.postRunnable(new NumberedRunnable(0));
@@ -44,10 +43,8 @@
         mEventLoop.postRunnable(runnableToAddAndRemove);
         mEventLoop.removeRunnable(runnableToAddAndRemove);
         mEventLoop.postRunnable(new NumberedRunnable(2));
-
-        assertThat(mExecutedRunnables).containsExactly(0, 2);
+        assertThat(mExecutedRunnables).doesNotContain(1);
     }
-    */
 
     @Test
     @SdkSuppress(minSdkVersion = 32, codeName = "T")
diff --git a/nearby/tests/unit/src/com/android/server/nearby/common/eventloop/HandlerEventLoopImplTest.java b/nearby/tests/unit/src/com/android/server/nearby/common/eventloop/HandlerEventLoopImplTest.java
new file mode 100644
index 0000000..4775456
--- /dev/null
+++ b/nearby/tests/unit/src/com/android/server/nearby/common/eventloop/HandlerEventLoopImplTest.java
@@ -0,0 +1,92 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.nearby.common.eventloop;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import androidx.test.filters.SdkSuppress;
+
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.rules.ExpectedException;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class HandlerEventLoopImplTest {
+    private static final String TAG = "HandlerEventLoopImplTest";
+    private final HandlerEventLoopImpl mHandlerEventLoopImpl =
+            new HandlerEventLoopImpl(TAG);
+    private final List<Integer> mExecutedRunnables = new ArrayList<>();
+    @Rule
+    public ExpectedException thrown = ExpectedException.none();
+
+    @Test
+    public void remove() {
+        mHandlerEventLoopImpl.postRunnable(new NumberedRunnable(0));
+        NumberedRunnable runnableToAddAndRemove = new NumberedRunnable(1);
+        mHandlerEventLoopImpl.postRunnable(runnableToAddAndRemove);
+        mHandlerEventLoopImpl.removeRunnable(runnableToAddAndRemove);
+        mHandlerEventLoopImpl.postRunnable(new NumberedRunnable(2));
+        assertThat(mExecutedRunnables).doesNotContain(1);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void isPosted() {
+        NumberedRunnable runnable = new HandlerEventLoopImplTest.NumberedRunnable(0);
+        mHandlerEventLoopImpl.postRunnableDelayed(runnable, 10 * 1000L);
+        assertThat(mHandlerEventLoopImpl.isPosted(runnable)).isTrue();
+        mHandlerEventLoopImpl.removeRunnable(runnable);
+        assertThat(mHandlerEventLoopImpl.isPosted(runnable)).isFalse();
+
+        // Let a runnable execute, then verify that it's not posted.
+        mHandlerEventLoopImpl.postRunnable(runnable);
+        assertThat(mHandlerEventLoopImpl.isPosted(runnable)).isTrue();
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void postAndWaitAfterDestroy() throws InterruptedException {
+        mHandlerEventLoopImpl.destroy();
+        mHandlerEventLoopImpl.postAndWait(new HandlerEventLoopImplTest.NumberedRunnable(0));
+        assertThat(mExecutedRunnables).isEmpty();
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void postEmptyQueueRunnable() {
+        mHandlerEventLoopImpl.postEmptyQueueRunnable(
+                new HandlerEventLoopImplTest.NumberedRunnable(0));
+    }
+
+    private class NumberedRunnable extends NamedRunnable {
+        private final int mId;
+
+        private NumberedRunnable(int id) {
+            super("NumberedRunnable:" + id);
+            this.mId = id;
+        }
+
+        @Override
+        public void run() {
+            // Note: when running in robolectric, this is not actually executed on a different
+            // thread, it's executed in the same thread the test runs in, so this is safe.
+            mExecutedRunnables.add(mId);
+        }
+    }
+}
diff --git a/nearby/tests/unit/src/com/android/server/nearby/common/eventloop/NamedRunnableTest.java b/nearby/tests/unit/src/com/android/server/nearby/common/eventloop/NamedRunnableTest.java
new file mode 100644
index 0000000..7005da1
--- /dev/null
+++ b/nearby/tests/unit/src/com/android/server/nearby/common/eventloop/NamedRunnableTest.java
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.nearby.common.eventloop;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import org.junit.Test;
+
+public class NamedRunnableTest {
+    private static final String TAG = "NamedRunnableTest";
+
+    @Test
+    public void testToString() {
+        assertThat(mNamedRunnable.toString()).isEqualTo("Runnable[" + TAG +  "]");
+    }
+
+    private final NamedRunnable mNamedRunnable = new NamedRunnable(TAG) {
+        @Override
+        public void run() {
+        }
+    };
+}
diff --git a/nearby/tests/unit/src/com/android/server/nearby/common/fastpair/IconUtilsTest.java b/nearby/tests/unit/src/com/android/server/nearby/common/fastpair/IconUtilsTest.java
new file mode 100644
index 0000000..d39d9cc
--- /dev/null
+++ b/nearby/tests/unit/src/com/android/server/nearby/common/fastpair/IconUtilsTest.java
@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.nearby.common.fastpair;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import android.content.Context;
+import android.graphics.Bitmap;
+
+import org.junit.Test;
+import org.mockito.Mock;
+
+public class IconUtilsTest {
+    private static final int MIN_ICON_SIZE = 16;
+    private static final int DESIRED_ICON_SIZE = 32;
+    @Mock
+    Context mContext;
+
+    @Test
+    public void isIconSizedCorrectly() {
+        // Null bitmap is not sized correctly
+        assertThat(IconUtils.isIconSizeCorrect(null)).isFalse();
+
+        int minIconSize = MIN_ICON_SIZE;
+        int desiredIconSize = DESIRED_ICON_SIZE;
+
+        // Bitmap that is 1x1 pixels is not sized correctly
+        Bitmap icon = Bitmap.createBitmap(1, 1, Bitmap.Config.ALPHA_8);
+        assertThat(IconUtils.isIconSizeCorrect(icon)).isFalse();
+
+        // Bitmap is categorized as small, and not regular
+        icon = Bitmap.createBitmap(minIconSize + 1,
+                minIconSize + 1, Bitmap.Config.ALPHA_8);
+        assertThat(IconUtils.isIconSizeCorrect(icon)).isTrue();
+        assertThat(IconUtils.isIconSizedSmall(icon)).isTrue();
+        assertThat(IconUtils.isIconSizedRegular(icon)).isFalse();
+
+        // Bitmap is categorized as regular, but not small
+        icon = Bitmap.createBitmap(desiredIconSize + 1,
+                desiredIconSize + 1, Bitmap.Config.ALPHA_8);
+        assertThat(IconUtils.isIconSizeCorrect(icon)).isTrue();
+        assertThat(IconUtils.isIconSizedSmall(icon)).isFalse();
+        assertThat(IconUtils.isIconSizedRegular(icon)).isTrue();
+    }
+
+    @Test
+    public void testAddWhiteCircleBackground() {
+        int minIconSize = MIN_ICON_SIZE;
+        Bitmap icon = Bitmap.createBitmap(minIconSize + 1, minIconSize + 1,
+                Bitmap.Config.ALPHA_8);
+
+        assertThat(
+                IconUtils.isIconSizeCorrect(IconUtils.addWhiteCircleBackground(mContext, icon)))
+                .isTrue();
+    }
+}
diff --git a/nearby/tests/unit/src/com/android/server/nearby/common/locator/LocatorTest.java b/nearby/tests/unit/src/com/android/server/nearby/common/locator/LocatorTest.java
new file mode 100644
index 0000000..c3a4e55
--- /dev/null
+++ b/nearby/tests/unit/src/com/android/server/nearby/common/locator/LocatorTest.java
@@ -0,0 +1,91 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.nearby.common.locator;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import androidx.test.core.app.ApplicationProvider;
+
+import com.android.server.nearby.common.eventloop.EventLoop;
+import com.android.server.nearby.fastpair.FastPairAdvHandler;
+import com.android.server.nearby.fastpair.FastPairModule;
+import com.android.server.nearby.fastpair.cache.FastPairCacheManager;
+import com.android.server.nearby.fastpair.footprint.FootprintsDeviceManager;
+import com.android.server.nearby.fastpair.halfsheet.FastPairHalfSheetManager;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.mockito.MockitoAnnotations;
+
+import java.time.Clock;
+
+import src.com.android.server.nearby.fastpair.testing.MockingLocator;
+
+public class LocatorTest {
+    private Locator mLocator;
+
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+        mLocator = src.com.android.server.nearby.fastpair.testing.MockingLocator.withMocksOnly(
+                ApplicationProvider.getApplicationContext());
+        mLocator.bind(new FastPairModule());
+    }
+
+    @Test
+    public void genericConstructor() {
+        assertThat(mLocator.get(FastPairCacheManager.class)).isNotNull();
+        assertThat(mLocator.get(FootprintsDeviceManager.class)).isNotNull();
+        assertThat(mLocator.get(EventLoop.class)).isNotNull();
+        assertThat(mLocator.get(FastPairHalfSheetManager.class)).isNotNull();
+        assertThat(mLocator.get(FastPairAdvHandler.class)).isNotNull();
+        assertThat(mLocator.get(Clock.class)).isNotNull();
+    }
+
+    @Test
+    public void genericDestroy() {
+        mLocator.destroy();
+    }
+
+    @Test
+    public void getOptional() {
+        assertThat(mLocator.getOptional(FastPairModule.class)).isNotNull();
+        mLocator.removeBindingForTest(FastPairModule.class);
+        assertThat(mLocator.getOptional(FastPairModule.class)).isNull();
+    }
+
+    @Test
+    public void getParent() {
+        assertThat(mLocator.getParent()).isNotNull();
+    }
+
+    @Test
+    public void getUnboundErrorMessage() {
+        assertThat(mLocator.getUnboundErrorMessage(FastPairModule.class))
+                .isEqualTo(
+                        "Unbound type: com.android.server.nearby.fastpair.FastPairModule\n"
+                        + "Searched locators:\n" + "android.app.Application ->\n"
+                                + "android.app.Application ->\n" + "android.app.Application");
+    }
+
+    @Test
+    public void getContextForTest() {
+        src.com.android.server.nearby.fastpair.testing.MockingLocator  mockingLocator =
+                new MockingLocator(ApplicationProvider.getApplicationContext(), mLocator);
+        assertThat(mockingLocator.getContextForTest()).isNotNull();
+    }
+}
diff --git a/nearby/tests/unit/src/com/android/server/nearby/common/servicemonitor/PackageWatcherTest.java b/nearby/tests/unit/src/com/android/server/nearby/common/servicemonitor/PackageWatcherTest.java
new file mode 100644
index 0000000..eafc7db
--- /dev/null
+++ b/nearby/tests/unit/src/com/android/server/nearby/common/servicemonitor/PackageWatcherTest.java
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.nearby.common.servicemonitor;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import android.content.Intent;
+
+import androidx.test.core.app.ApplicationProvider;
+
+import org.junit.Test;
+
+public class PackageWatcherTest {
+    private PackageWatcher mPackageWatcher = new PackageWatcher() {
+        @Override
+        public void onSomePackagesChanged() {
+        }
+    };
+
+    @Test
+    public void getPackageName() {
+        Intent intent = new Intent("Action", null);
+        assertThat(mPackageWatcher.getPackageName(intent)).isNull();
+    }
+
+    @Test
+    public void onReceive() {
+        Intent intent = new Intent(Intent.ACTION_PACKAGES_UNSUSPENDED, null);
+        mPackageWatcher.onReceive(ApplicationProvider.getApplicationContext(), intent);
+    }
+}
diff --git a/nearby/tests/unit/src/com/android/server/nearby/fastpair/FastPairAdvHandlerTest.java b/nearby/tests/unit/src/com/android/server/nearby/fastpair/FastPairAdvHandlerTest.java
index 346a961..39ea5a9 100644
--- a/nearby/tests/unit/src/com/android/server/nearby/fastpair/FastPairAdvHandlerTest.java
+++ b/nearby/tests/unit/src/com/android/server/nearby/fastpair/FastPairAdvHandlerTest.java
@@ -16,6 +16,8 @@
 
 package com.android.server.nearby.fastpair;
 
+import static com.google.common.truth.Truth.assertThat;
+
 import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.Mockito.never;
 import static org.mockito.Mockito.verify;
@@ -24,16 +26,22 @@
 import android.content.Context;
 import android.nearby.FastPairDevice;
 
+import com.android.server.nearby.common.bloomfilter.BloomFilter;
 import com.android.server.nearby.common.locator.LocatorContextWrapper;
 import com.android.server.nearby.fastpair.halfsheet.FastPairHalfSheetManager;
 import com.android.server.nearby.fastpair.notification.FastPairNotificationManager;
 import com.android.server.nearby.provider.FastPairDataProvider;
 
+import com.google.common.collect.ImmutableList;
+import com.google.protobuf.ByteString;
+
 import org.junit.Before;
 import org.junit.Test;
 import org.mockito.Mock;
 import org.mockito.MockitoAnnotations;
 
+import service.proto.Cache;
+import service.proto.Data;
 import service.proto.Rpcs;
 
 public class FastPairAdvHandlerTest {
@@ -45,11 +53,21 @@
     private FastPairHalfSheetManager mFastPairHalfSheetManager;
     @Mock
     private FastPairNotificationManager mFastPairNotificationManager;
+    @Mock
+    private BloomFilter mBloomFilter;
+    @Mock
+    Cache.StoredDiscoveryItem mStoredDiscoveryItem;
+    @Mock
+    Cache.StoredFastPairItem mStoredFastPairItem;
+    @Mock
+    Data.FastPairDeviceWithAccountKey mFastPairDeviceWithAccountKey;
+    private static final byte[] ACCOUNT_KEY = new byte[] {0, 1, 2};
     private static final String BLUETOOTH_ADDRESS = "AA:BB:CC:DD";
     private static final int CLOSE_RSSI = -80;
     private static final int FAR_AWAY_RSSI = -120;
     private static final int TX_POWER = -70;
     private static final byte[] INITIAL_BYTE_ARRAY = new byte[]{0x01, 0x02, 0x03};
+    private static final byte[] SALT = new byte[]{0x01};
 
     LocatorContextWrapper mLocatorContextWrapper;
     FastPairAdvHandler mFastPairAdvHandler;
@@ -99,7 +117,7 @@
     }
 
     @Test
-    public void testSubsequentBroadcast() {
+    public void testSubsequentBroadcast_notShowHalfSheet() {
         byte[] fastPairRecordWithBloomFilter =
                 new byte[]{
                         (byte) 0x02,
@@ -132,4 +150,44 @@
 
         verify(mFastPairHalfSheetManager, never()).showHalfSheet(any());
     }
+
+    @Test
+    public void testFindRecognizedDevice_bloomFilterNotContains_notFound() {
+        when(mFastPairDeviceWithAccountKey.getAccountKey())
+                .thenReturn(ByteString.copyFrom(ACCOUNT_KEY), ByteString.copyFrom(ACCOUNT_KEY));
+        when(mBloomFilter.possiblyContains(any(byte[].class))).thenReturn(false);
+
+        assertThat(FastPairAdvHandler.findRecognizedDevice(
+                ImmutableList.of(mFastPairDeviceWithAccountKey), mBloomFilter, SALT)).isNull();
+    }
+
+    @Test
+    public void testFindRecognizedDevice_bloomFilterContains_found() {
+        when(mFastPairDeviceWithAccountKey.getAccountKey())
+                .thenReturn(ByteString.copyFrom(ACCOUNT_KEY), ByteString.copyFrom(ACCOUNT_KEY));
+        when(mBloomFilter.possiblyContains(any(byte[].class))).thenReturn(true);
+
+        assertThat(FastPairAdvHandler.findRecognizedDevice(
+                ImmutableList.of(mFastPairDeviceWithAccountKey), mBloomFilter, SALT)).isNotNull();
+    }
+
+    @Test
+    public void testFindRecognizedDeviceFromCachedItem_bloomFilterNotContains_notFound() {
+        when(mStoredFastPairItem.getAccountKey())
+                .thenReturn(ByteString.copyFrom(ACCOUNT_KEY), ByteString.copyFrom(ACCOUNT_KEY));
+        when(mBloomFilter.possiblyContains(any(byte[].class))).thenReturn(false);
+
+        assertThat(FastPairAdvHandler.findRecognizedDeviceFromCachedItem(
+                ImmutableList.of(mStoredFastPairItem), mBloomFilter, SALT)).isNull();
+    }
+
+    @Test
+    public void testFindRecognizedDeviceFromCachedItem_bloomFilterContains_found() {
+        when(mStoredFastPairItem.getAccountKey())
+                .thenReturn(ByteString.copyFrom(ACCOUNT_KEY), ByteString.copyFrom(ACCOUNT_KEY));
+        when(mBloomFilter.possiblyContains(any(byte[].class))).thenReturn(true);
+
+        assertThat(FastPairAdvHandler.findRecognizedDeviceFromCachedItem(
+                ImmutableList.of(mStoredFastPairItem), mBloomFilter, SALT)).isNotNull();
+    }
 }
diff --git a/Cronet/tests/cts/src/android/net/http/cts/util/CronetCtsTestServer.kt b/nearby/tests/unit/src/com/android/server/nearby/fastpair/FlagUtilsTest.java
similarity index 64%
copy from Cronet/tests/cts/src/android/net/http/cts/util/CronetCtsTestServer.kt
copy to nearby/tests/unit/src/com/android/server/nearby/fastpair/FlagUtilsTest.java
index 3ccb571..9cf65f4 100644
--- a/Cronet/tests/cts/src/android/net/http/cts/util/CronetCtsTestServer.kt
+++ b/nearby/tests/unit/src/com/android/server/nearby/fastpair/FlagUtilsTest.java
@@ -14,13 +14,14 @@
  * limitations under the License.
  */
 
-package android.net.http.cts.util
+package com.android.server.nearby.fastpair;
 
-import android.content.Context
-import android.webkit.cts.CtsTestServer
+import org.junit.Test;
 
-/** Extends CtsTestServer to handle POST requests and other cronet specific test requests */
-class CronetCtsTestServer(context: Context) : CtsTestServer(context) {
+public class FlagUtilsTest {
 
-    val successUrl: String = getAssetUrl("html/hello_world.html")
+    @Test
+    public void testGetPreferencesBuilder_notCrash() {
+        FlagUtils.getPreferencesBuilder().build();
+    }
 }
diff --git a/nearby/tests/unit/src/com/android/server/nearby/fastpair/cache/DiscoveryItemTest.java b/nearby/tests/unit/src/com/android/server/nearby/fastpair/cache/DiscoveryItemTest.java
new file mode 100644
index 0000000..5d4ea22
--- /dev/null
+++ b/nearby/tests/unit/src/com/android/server/nearby/fastpair/cache/DiscoveryItemTest.java
@@ -0,0 +1,234 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.nearby.fastpair.cache;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.Mockito.when;
+
+import android.content.Context;
+
+import androidx.test.platform.app.InstrumentationRegistry;
+
+import com.android.server.nearby.common.locator.LocatorContextWrapper;
+import com.android.server.nearby.fastpair.FastPairManager;
+import com.android.server.nearby.fastpair.testing.FakeDiscoveryItems;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+
+import service.proto.Cache;
+
+/** Unit tests for {@link DiscoveryItem} */
+public class DiscoveryItemTest {
+    private static final String DEFAULT_MAC_ADDRESS = "00:11:22:33:44:55";
+    private static final String DEFAULT_DESCRIPITON = "description";
+    private static final long DEFAULT_TIMESTAMP = 1000000000L;
+    private static final String DEFAULT_TITLE = "title";
+    private static final String APP_NAME = "app_name";
+    private static final String ACTION_URL =
+            "intent:#Intent;action=com.android.server.nearby:ACTION_FAST_PAIR;"
+            + "package=com.google.android.gms;"
+            + "component=com.google.android.gms/"
+            + ".nearby.discovery.service.DiscoveryService;end";
+    private static final String DISPLAY_URL = "DISPLAY_URL";
+    private static final String TRIGGER_ID = "trigger.id";
+    private static final String FAST_PAIR_ID = "id";
+    private static final int RSSI = -80;
+    private static final int TX_POWER = -10;
+
+    @Mock private Context mContext;
+    private LocatorContextWrapper mLocatorContextWrapper;
+    private FastPairCacheManager mFastPairCacheManager;
+    private FastPairManager mFastPairManager;
+    private DiscoveryItem mDiscoveryItem;
+
+    @Before
+    public void setup() {
+        MockitoAnnotations.initMocks(this);
+        mLocatorContextWrapper = new LocatorContextWrapper(mContext);
+        mFastPairManager = new FastPairManager(mLocatorContextWrapper);
+        mFastPairCacheManager = mLocatorContextWrapper.getLocator().get(FastPairCacheManager.class);
+        when(mContext.getContentResolver()).thenReturn(
+                InstrumentationRegistry.getInstrumentation().getContext().getContentResolver());
+        mDiscoveryItem =
+                FakeDiscoveryItems.newFastPairDiscoveryItem(mLocatorContextWrapper);
+    }
+
+    @Test
+    public void testMultipleFields() {
+        assertThat(mDiscoveryItem.getId()).isEqualTo(FAST_PAIR_ID);
+        assertThat(mDiscoveryItem.getDescription()).isEqualTo(DEFAULT_DESCRIPITON);
+        assertThat(mDiscoveryItem.getDisplayUrl()).isEqualTo(DISPLAY_URL);
+        assertThat(mDiscoveryItem.getTriggerId()).isEqualTo(TRIGGER_ID);
+        assertThat(mDiscoveryItem.getMacAddress()).isEqualTo(DEFAULT_MAC_ADDRESS);
+        assertThat(
+                mDiscoveryItem.getFirstObservationTimestampMillis()).isEqualTo(DEFAULT_TIMESTAMP);
+        assertThat(
+                mDiscoveryItem.getLastObservationTimestampMillis()).isEqualTo(DEFAULT_TIMESTAMP);
+        assertThat(mDiscoveryItem.getActionUrl()).isEqualTo(ACTION_URL);
+        assertThat(mDiscoveryItem.getAppName()).isEqualTo(APP_NAME);
+        assertThat(mDiscoveryItem.getRssi()).isEqualTo(RSSI);
+        assertThat(mDiscoveryItem.getTxPower()).isEqualTo(TX_POWER);
+        assertThat(mDiscoveryItem.getFastPairInformation()).isNull();
+        assertThat(mDiscoveryItem.getFastPairSecretKey()).isNull();
+        assertThat(mDiscoveryItem.getIcon()).isNull();
+        assertThat(mDiscoveryItem.getIconFifeUrl()).isNotNull();
+        assertThat(mDiscoveryItem.getState()).isNotNull();
+        assertThat(mDiscoveryItem.getTitle()).isNotNull();
+        assertThat(mDiscoveryItem.isApp()).isFalse();
+        assertThat(mDiscoveryItem.isDeletable(
+                100000L, 0L)).isTrue();
+        assertThat(mDiscoveryItem.isDeviceType(Cache.NearbyType.NEARBY_CHROMECAST)).isTrue();
+        assertThat(mDiscoveryItem.isExpired(
+                100000L, 0L)).isTrue();
+        assertThat(mDiscoveryItem.isFastPair()).isTrue();
+        assertThat(mDiscoveryItem.isPendingAppInstallValid(5)).isTrue();
+        assertThat(mDiscoveryItem.isPendingAppInstallValid(5,
+                FakeDiscoveryItems.newFastPairDeviceStoredItem(FAST_PAIR_ID,  null,
+                TRIGGER_ID,  DEFAULT_MAC_ADDRESS,  "", RSSI, TX_POWER))).isTrue();
+        assertThat(mDiscoveryItem.isTypeEnabled(Cache.NearbyType.NEARBY_CHROMECAST)).isTrue();
+        assertThat(mDiscoveryItem.toString()).isNotNull();
+    }
+
+    @Test
+    public void isMuted() {
+        assertThat(mDiscoveryItem.isMuted()).isFalse();
+    }
+
+    @Test
+    public void itemWithDefaultDescription_shouldShowUp() {
+        assertThat(mDiscoveryItem.isReadyForDisplay()).isFalse();
+
+        // Null description should not show up.
+        mDiscoveryItem.setStoredItemForTest(DiscoveryItem.newStoredDiscoveryItem());
+        mDiscoveryItem.setStoredItemForTest(
+                FakeDiscoveryItems.newFastPairDeviceStoredItem(FAST_PAIR_ID,  null,
+                        TRIGGER_ID,  DEFAULT_MAC_ADDRESS,  "", RSSI, TX_POWER));
+        assertThat(mDiscoveryItem.isReadyForDisplay()).isFalse();
+
+        // Empty description should not show up.
+        mDiscoveryItem.setStoredItemForTest(
+                FakeDiscoveryItems.newFastPairDeviceStoredItem(FAST_PAIR_ID,  "",
+                        TRIGGER_ID,  DEFAULT_MAC_ADDRESS, DEFAULT_TITLE, RSSI, TX_POWER));
+        assertThat(mDiscoveryItem.isReadyForDisplay()).isFalse();
+    }
+
+    @Test
+    public void itemWithEmptyTitle_shouldNotShowUp() {
+        // Null title should not show up.
+        assertThat(mDiscoveryItem.isReadyForDisplay()).isFalse();
+        // Empty title should not show up.
+        mDiscoveryItem.setStoredItemForTest(
+                FakeDiscoveryItems.newFastPairDeviceStoredItem(FAST_PAIR_ID, DEFAULT_DESCRIPITON,
+                        TRIGGER_ID, DEFAULT_MAC_ADDRESS, "", RSSI, TX_POWER));
+        assertThat(mDiscoveryItem.isReadyForDisplay()).isFalse();
+
+        // Null title should not show up.
+        mDiscoveryItem.setStoredItemForTest(
+                FakeDiscoveryItems.newFastPairDeviceStoredItem(FAST_PAIR_ID, DEFAULT_DESCRIPITON,
+                        TRIGGER_ID, DEFAULT_MAC_ADDRESS, null, RSSI, TX_POWER));
+        assertThat(mDiscoveryItem.isReadyForDisplay()).isFalse();
+    }
+
+    @Test
+    public void itemWithRssiAndTxPower_shouldHaveCorrectEstimatedDistance() {
+        assertThat(mDiscoveryItem.getEstimatedDistance()).isWithin(0.01).of(28.18);
+    }
+
+    @Test
+    public void itemWithoutRssiOrTxPower_shouldNotHaveEstimatedDistance() {
+        mDiscoveryItem.setStoredItemForTest(
+                FakeDiscoveryItems.newFastPairDeviceStoredItem(FAST_PAIR_ID, DEFAULT_DESCRIPITON,
+                        TRIGGER_ID, DEFAULT_MAC_ADDRESS, "", 0, 0));
+        assertThat(mDiscoveryItem.getEstimatedDistance()).isWithin(0.01).of(0);
+    }
+
+    @Test
+    public void getUiHashCode_differentAddress_differentHash() {
+        mDiscoveryItem.setStoredItemForTest(
+                FakeDiscoveryItems.newFastPairDeviceStoredItem(FAST_PAIR_ID, DEFAULT_DESCRIPITON,
+                        TRIGGER_ID, "00:11:22:33:44:55", "", RSSI, TX_POWER));
+        DiscoveryItem compareTo =
+                FakeDiscoveryItems.newFastPairDiscoveryItem(mLocatorContextWrapper);
+        compareTo.setStoredItemForTest(
+                FakeDiscoveryItems.newFastPairDeviceStoredItem(FAST_PAIR_ID, DEFAULT_DESCRIPITON,
+                        TRIGGER_ID, "55:44:33:22:11:00", "", RSSI, TX_POWER));
+        assertThat(mDiscoveryItem.getUiHashCode()).isNotEqualTo(compareTo.getUiHashCode());
+    }
+
+    @Test
+    public void getUiHashCode_sameAddress_sameHash() {
+        mDiscoveryItem.setStoredItemForTest(
+                FakeDiscoveryItems.newFastPairDeviceStoredItem(FAST_PAIR_ID, DEFAULT_DESCRIPITON,
+                        TRIGGER_ID, "00:11:22:33:44:55", "", RSSI, TX_POWER));
+        DiscoveryItem compareTo =
+                FakeDiscoveryItems.newFastPairDiscoveryItem(mLocatorContextWrapper);
+        compareTo.setStoredItemForTest(
+                FakeDiscoveryItems.newFastPairDeviceStoredItem(FAST_PAIR_ID, DEFAULT_DESCRIPITON,
+                        TRIGGER_ID, "00:11:22:33:44:55", "", RSSI, TX_POWER));
+        assertThat(mDiscoveryItem.getUiHashCode()).isEqualTo(compareTo.getUiHashCode());
+    }
+
+    @Test
+    public void isFastPair() {
+        DiscoveryItem fastPairItem =
+                FakeDiscoveryItems.newFastPairDiscoveryItem(mLocatorContextWrapper);
+        assertThat(fastPairItem.isFastPair()).isTrue();
+    }
+
+    @Test
+    public void testEqual() {
+        DiscoveryItem fastPairItem =
+                FakeDiscoveryItems.newFastPairDiscoveryItem(mLocatorContextWrapper);
+        assertThat(mDiscoveryItem.equals(fastPairItem)).isTrue();
+    }
+
+    @Test
+    public void testCompareTo() {
+        DiscoveryItem fastPairItem =
+                FakeDiscoveryItems.newFastPairDiscoveryItem(mLocatorContextWrapper);
+        assertThat(mDiscoveryItem.compareTo(fastPairItem)).isEqualTo(0);
+    }
+
+
+    @Test
+    public void testCopyOfStoredItem() {
+        DiscoveryItem fastPairItem =
+                FakeDiscoveryItems.newFastPairDiscoveryItem(mLocatorContextWrapper);
+        fastPairItem.setStoredItemForTest(
+                FakeDiscoveryItems.newFastPairDeviceStoredItem(FAST_PAIR_ID, DEFAULT_DESCRIPITON,
+                        TRIGGER_ID, "00:11:22:33:44:55", "", RSSI, TX_POWER));
+        assertThat(mDiscoveryItem.equals(fastPairItem)).isFalse();
+        fastPairItem.setStoredItemForTest(mDiscoveryItem.getCopyOfStoredItem());
+        assertThat(mDiscoveryItem.equals(fastPairItem)).isTrue();
+    }
+
+    @Test
+    public void testStoredItemForTest() {
+        DiscoveryItem fastPairItem =
+                FakeDiscoveryItems.newFastPairDiscoveryItem(mLocatorContextWrapper);
+        fastPairItem.setStoredItemForTest(
+                FakeDiscoveryItems.newFastPairDeviceStoredItem(FAST_PAIR_ID, DEFAULT_DESCRIPITON,
+                        TRIGGER_ID, "00:11:22:33:44:55", "", RSSI, TX_POWER));
+        assertThat(mDiscoveryItem.equals(fastPairItem)).isFalse();
+        fastPairItem.setStoredItemForTest(mDiscoveryItem.getStoredItemForTest());
+        assertThat(mDiscoveryItem.equals(fastPairItem)).isTrue();
+    }
+}
diff --git a/nearby/tests/unit/src/com/android/server/nearby/fastpair/cache/FastPairCacheManagerTest.java b/nearby/tests/unit/src/com/android/server/nearby/fastpair/cache/FastPairCacheManagerTest.java
index fdda6f7..18f2cf6 100644
--- a/nearby/tests/unit/src/com/android/server/nearby/fastpair/cache/FastPairCacheManagerTest.java
+++ b/nearby/tests/unit/src/com/android/server/nearby/fastpair/cache/FastPairCacheManagerTest.java
@@ -20,6 +20,7 @@
 
 import static org.mockito.Mockito.when;
 
+import android.bluetooth.le.ScanResult;
 import android.content.Context;
 
 import androidx.test.core.app.ApplicationProvider;
@@ -50,6 +51,10 @@
     DiscoveryItem mDiscoveryItem2;
     @Mock
     Cache.StoredFastPairItem mStoredFastPairItem;
+    @Mock
+    ScanResult mScanResult;
+
+    Context mContext;
     Cache.StoredDiscoveryItem mStoredDiscoveryItem = Cache.StoredDiscoveryItem.newBuilder()
             .setTriggerId(MODEL_ID)
             .setAppName(APP_NAME).build();
@@ -60,12 +65,12 @@
     @Before
     public void setup() {
         MockitoAnnotations.initMocks(this);
+        mContext = ApplicationProvider.getApplicationContext();
     }
 
     @Test
     @SdkSuppress(minSdkVersion = 32, codeName = "T")
     public void notSaveRetrieveInfo() {
-        Context mContext = ApplicationProvider.getApplicationContext();
         when(mDiscoveryItem.getCopyOfStoredItem()).thenReturn(mStoredDiscoveryItem);
         when(mDiscoveryItem.getTriggerId()).thenReturn(MODEL_ID);
 
@@ -78,7 +83,6 @@
     @Test
     @SdkSuppress(minSdkVersion = 32, codeName = "T")
     public void saveRetrieveInfo() {
-        Context mContext = ApplicationProvider.getApplicationContext();
         when(mDiscoveryItem.getCopyOfStoredItem()).thenReturn(mStoredDiscoveryItem);
         when(mDiscoveryItem.getTriggerId()).thenReturn(MODEL_ID);
         when(mDiscoveryItem2.getCopyOfStoredItem()).thenReturn(mStoredDiscoveryItem2);
@@ -100,7 +104,6 @@
     @Test
     @SdkSuppress(minSdkVersion = 32, codeName = "T")
     public void saveRetrieveInfoStoredFastPairItem() {
-        Context mContext = ApplicationProvider.getApplicationContext();
         Cache.StoredFastPairItem storedFastPairItem = Cache.StoredFastPairItem.newBuilder()
                 .setMacAddress(MAC_ADDRESS)
                 .setAccountKey(ACCOUNT_KEY)
@@ -118,7 +121,6 @@
     @Test
     @SdkSuppress(minSdkVersion = 32, codeName = "T")
     public void checkGetAllFastPairItems() {
-        Context mContext = ApplicationProvider.getApplicationContext();
         Cache.StoredFastPairItem storedFastPairItem = Cache.StoredFastPairItem.newBuilder()
                 .setMacAddress(MAC_ADDRESS)
                 .setAccountKey(ACCOUNT_KEY)
@@ -139,5 +141,15 @@
 
         assertThat(fastPairCacheManager.getAllSavedStoredFastPairItem().size())
                 .isEqualTo(1);
+
+        fastPairCacheManager.cleanUp();
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void getDeviceFromScanResult_notCrash() {
+        FastPairCacheManager fastPairCacheManager = new FastPairCacheManager(mContext);
+        fastPairCacheManager.getDeviceFromScanResult(mScanResult);
+
     }
 }
diff --git a/nearby/tests/unit/src/com/android/server/nearby/fastpair/cache/FastPairDbHelperTest.java b/nearby/tests/unit/src/com/android/server/nearby/fastpair/cache/FastPairDbHelperTest.java
new file mode 100644
index 0000000..c5428f5
--- /dev/null
+++ b/nearby/tests/unit/src/com/android/server/nearby/fastpair/cache/FastPairDbHelperTest.java
@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.nearby.fastpair.cache;
+
+import static org.junit.Assert.assertThrows;
+
+import android.content.Context;
+import android.database.sqlite.SQLiteException;
+
+import androidx.test.platform.app.InstrumentationRegistry;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.mockito.MockitoAnnotations;
+
+public class FastPairDbHelperTest {
+
+    Context mContext;
+    FastPairDbHelper mFastPairDbHelper;
+
+    @Before
+    public void setup() {
+        MockitoAnnotations.initMocks(this);
+        mContext = InstrumentationRegistry.getInstrumentation().getContext();
+        mFastPairDbHelper = new FastPairDbHelper(mContext);
+    }
+
+    @After
+    public void teardown() {
+        mFastPairDbHelper.close();
+    }
+
+    @Test
+    public void testUpgrade_notCrash() {
+        mFastPairDbHelper
+                .onUpgrade(mFastPairDbHelper.getWritableDatabase(), 1, 2);
+    }
+
+    @Test
+    public void testDowngrade_throwsException()  {
+        assertThrows(
+                SQLiteException.class,
+                () -> mFastPairDbHelper.onDowngrade(
+                        mFastPairDbHelper.getWritableDatabase(), 2, 1));
+    }
+}
diff --git a/nearby/tests/unit/src/com/android/server/nearby/fastpair/halfsheet/FastPairHalfSheetManagerTest.java b/nearby/tests/unit/src/com/android/server/nearby/fastpair/halfsheet/FastPairHalfSheetManagerTest.java
index 58e4c47..b51a295 100644
--- a/nearby/tests/unit/src/com/android/server/nearby/fastpair/halfsheet/FastPairHalfSheetManagerTest.java
+++ b/nearby/tests/unit/src/com/android/server/nearby/fastpair/halfsheet/FastPairHalfSheetManagerTest.java
@@ -16,6 +16,8 @@
 
 package com.android.server.nearby.fastpair.halfsheet;
 
+import static com.google.common.truth.Truth.assertThat;
+
 import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.ArgumentMatchers.anyInt;
 import static org.mockito.ArgumentMatchers.eq;
@@ -25,6 +27,7 @@
 import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.when;
 
+import android.content.Context;
 import android.content.Intent;
 import android.content.pm.ActivityInfo;
 import android.content.pm.ApplicationInfo;
@@ -32,6 +35,8 @@
 import android.content.pm.ResolveInfo;
 import android.os.UserHandle;
 
+import androidx.test.platform.app.InstrumentationRegistry;
+
 import com.android.server.nearby.common.locator.Locator;
 import com.android.server.nearby.common.locator.LocatorContextWrapper;
 import com.android.server.nearby.fastpair.FastPairController;
@@ -50,13 +55,13 @@
 public class FastPairHalfSheetManagerTest {
     private static final String BLEADDRESS = "11:22:44:66";
     private static final String NAME = "device_name";
+    private static final int PASSKEY = 1234;
     private FastPairHalfSheetManager mFastPairHalfSheetManager;
     private Cache.ScanFastPairStoreItem mScanFastPairStoreItem;
+    @Mock private Context mContext;
     @Mock
     LocatorContextWrapper mContextWrapper;
     @Mock
-    ResolveInfo mResolveInfo;
-    @Mock
     PackageManager mPackageManager;
     @Mock
     Locator mLocator;
@@ -66,7 +71,8 @@
     @Before
     public void setup() {
         MockitoAnnotations.initMocks(this);
-
+        when(mContext.getContentResolver()).thenReturn(
+                InstrumentationRegistry.getInstrumentation().getContext().getContentResolver());
         mScanFastPairStoreItem = Cache.ScanFastPairStoreItem.newBuilder()
                 .setAddress(BLEADDRESS)
                 .setDeviceName(NAME)
@@ -133,4 +139,24 @@
         verify(mContextWrapper, never())
                 .startActivityAsUser(intentArgumentCaptor.capture(), eq(UserHandle.CURRENT));
     }
+
+    @Test
+    public void getHalfSheetForegroundState() {
+        mFastPairHalfSheetManager =
+                new FastPairHalfSheetManager(mContextWrapper);
+        assertThat(mFastPairHalfSheetManager.getHalfSheetForegroundState()).isTrue();
+    }
+
+    @Test
+    public void testEmptyMethods() {
+        mFastPairHalfSheetManager =
+                new FastPairHalfSheetManager(mContextWrapper);
+        mFastPairHalfSheetManager.destroyBluetoothPairController();
+        mFastPairHalfSheetManager.disableDismissRunnable();
+        mFastPairHalfSheetManager.notifyPairingProcessDone(true, BLEADDRESS, null);
+        mFastPairHalfSheetManager.showPairingFailed();
+        mFastPairHalfSheetManager.showPairingHalfSheet(null);
+        mFastPairHalfSheetManager.showPairingSuccessHalfSheet(BLEADDRESS);
+        mFastPairHalfSheetManager.showPasskeyConfirmation(null, PASSKEY);
+    }
 }
diff --git a/nearby/tests/unit/src/com/android/server/nearby/fastpair/notification/FastPairNotificationManagerTest.java b/nearby/tests/unit/src/com/android/server/nearby/fastpair/notification/FastPairNotificationManagerTest.java
new file mode 100644
index 0000000..4fb6b37
--- /dev/null
+++ b/nearby/tests/unit/src/com/android/server/nearby/fastpair/notification/FastPairNotificationManagerTest.java
@@ -0,0 +1,76 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.nearby.fastpair.notification;
+
+import static org.mockito.Mockito.when;
+
+import android.content.Context;
+
+import androidx.test.platform.app.InstrumentationRegistry;
+
+import com.android.server.nearby.common.locator.LocatorContextWrapper;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+
+public class FastPairNotificationManagerTest {
+
+    @Mock private Context mContext;
+    private static final boolean USE_LARGE_ICON = true;
+    private static final int NOTIFICATION_ID = 1;
+    private static final String COMPANION_APP = "companionApp";
+    private static final int BATTERY_LEVEL = 1;
+    private static final String DEVICE_NAME = "deviceName";
+    private static final String ADDRESS = "address";
+    private FastPairNotificationManager mFastPairNotificationManager;
+    private LocatorContextWrapper mLocatorContextWrapper;
+
+    @Before
+    public void setup() {
+        MockitoAnnotations.initMocks(this);
+        mLocatorContextWrapper = new LocatorContextWrapper(mContext);
+        when(mContext.getContentResolver()).thenReturn(
+                InstrumentationRegistry.getInstrumentation().getContext().getContentResolver());
+        mFastPairNotificationManager =
+                new FastPairNotificationManager(mLocatorContextWrapper, null,
+                        USE_LARGE_ICON, NOTIFICATION_ID);
+    }
+
+    @Test
+    public void  notifyPairingProcessDone() {
+        mFastPairNotificationManager.notifyPairingProcessDone(true, true,
+                "privateAddress", "publicAddress");
+    }
+
+    @Test
+    public void  showConnectingNotification() {
+        mFastPairNotificationManager.showConnectingNotification();
+    }
+
+    @Test
+    public void   showPairingFailedNotification() {
+        mFastPairNotificationManager.showPairingFailedNotification(new byte[]{1});
+    }
+
+    @Test
+    public void  showPairingSucceededNotification() {
+        mFastPairNotificationManager.showPairingSucceededNotification(COMPANION_APP,
+                BATTERY_LEVEL, DEVICE_NAME, ADDRESS);
+    }
+}
diff --git a/nearby/tests/unit/src/com/android/server/nearby/fastpair/pairinghandler/HalfSheetPairingProgressHandlerTest.java b/nearby/tests/unit/src/com/android/server/nearby/fastpair/pairinghandler/HalfSheetPairingProgressHandlerTest.java
new file mode 100644
index 0000000..bfe009c
--- /dev/null
+++ b/nearby/tests/unit/src/com/android/server/nearby/fastpair/pairinghandler/HalfSheetPairingProgressHandlerTest.java
@@ -0,0 +1,135 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.nearby.fastpair.pairinghandler;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.Mockito.when;
+
+import android.bluetooth.BluetoothAdapter;
+import android.bluetooth.BluetoothDevice;
+
+import com.android.server.nearby.common.bluetooth.fastpair.FastPairConnection;
+import com.android.server.nearby.common.locator.Locator;
+import com.android.server.nearby.common.locator.LocatorContextWrapper;
+import com.android.server.nearby.fastpair.cache.DiscoveryItem;
+import com.android.server.nearby.fastpair.cache.FastPairCacheManager;
+import com.android.server.nearby.fastpair.footprint.FootprintsDeviceManager;
+import com.android.server.nearby.fastpair.halfsheet.FastPairHalfSheetManager;
+import com.android.server.nearby.fastpair.testing.FakeDiscoveryItems;
+
+import com.google.protobuf.ByteString;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+
+import java.time.Clock;
+
+import service.proto.Cache;
+import service.proto.Rpcs;
+
+public class HalfSheetPairingProgressHandlerTest {
+    @Mock
+    Locator mLocator;
+    @Mock
+    LocatorContextWrapper mContextWrapper;
+    @Mock
+    Clock mClock;
+    @Mock
+    FastPairCacheManager mFastPairCacheManager;
+    @Mock
+    FastPairConnection mFastPairConnection;
+    @Mock
+    FootprintsDeviceManager mFootprintsDeviceManager;
+
+    private static final String MAC_ADDRESS = "00:11:22:33:44:55";
+    private static final byte[] ACCOUNT_KEY = new byte[]{0x01, 0x02};
+    private static final int SUBSEQUENT_PAIR_START = 1310;
+    private static final int SUBSEQUENT_PAIR_END = 1320;
+    private static final int PASSKEY = 1234;
+    private static HalfSheetPairingProgressHandler sHalfSheetPairingProgressHandler;
+    private static DiscoveryItem sDiscoveryItem;
+    private static BluetoothDevice sBluetoothDevice;
+
+    @Before
+    public void setup() {
+        MockitoAnnotations.initMocks(this);
+        when(mContextWrapper.getLocator()).thenReturn(mLocator);
+        mLocator.overrideBindingForTest(FastPairCacheManager.class, mFastPairCacheManager);
+        mLocator.overrideBindingForTest(Clock.class, mClock);
+        FastPairHalfSheetManager mfastPairHalfSheetManager =
+                new FastPairHalfSheetManager(mContextWrapper);
+        mLocator.bind(FastPairHalfSheetManager.class, mfastPairHalfSheetManager);
+        when(mLocator.get(FastPairHalfSheetManager.class)).thenReturn(mfastPairHalfSheetManager);
+        sDiscoveryItem = FakeDiscoveryItems.newFastPairDiscoveryItem(mContextWrapper);
+        sDiscoveryItem.setStoredItemForTest(
+                sDiscoveryItem.getStoredItemForTest().toBuilder()
+                        .setAuthenticationPublicKeySecp256R1(ByteString.copyFrom(ACCOUNT_KEY))
+                        .setMacAddress(MAC_ADDRESS)
+                        .setFastPairInformation(
+                                Cache.FastPairInformation.newBuilder()
+                                        .setDeviceType(Rpcs.DeviceType.HEADPHONES).build())
+                        .build());
+        sHalfSheetPairingProgressHandler =
+                new HalfSheetPairingProgressHandler(mContextWrapper, sDiscoveryItem,
+                        sDiscoveryItem.getAppPackageName(), ACCOUNT_KEY);
+
+        sBluetoothDevice =
+                BluetoothAdapter.getDefaultAdapter().getRemoteDevice("00:11:22:33:44:55");
+    }
+
+    @Test
+    public void getPairEndEventCode() {
+        assertThat(sHalfSheetPairingProgressHandler
+                .getPairEndEventCode()).isEqualTo(SUBSEQUENT_PAIR_END);
+    }
+
+    @Test
+    public void getPairStartEventCode() {
+        assertThat(sHalfSheetPairingProgressHandler
+                .getPairStartEventCode()).isEqualTo(SUBSEQUENT_PAIR_START);
+    }
+
+    @Test
+    public void testOnHandlePasskeyConfirmation() {
+        sHalfSheetPairingProgressHandler.onHandlePasskeyConfirmation(sBluetoothDevice, PASSKEY);
+    }
+
+    @Test
+    public void testOnPairedCallbackCalled() {
+        sHalfSheetPairingProgressHandler.onPairedCallbackCalled(mFastPairConnection, ACCOUNT_KEY,
+                mFootprintsDeviceManager, MAC_ADDRESS);
+    }
+
+    @Test
+    public void testonPairingFailed() {
+        Throwable e = new Throwable("onPairingFailed");
+        sHalfSheetPairingProgressHandler.onPairingFailed(e);
+    }
+
+    @Test
+    public void testonPairingStarted() {
+        sHalfSheetPairingProgressHandler.onPairingStarted();
+    }
+
+    @Test
+    public void testonPairingSuccess() {
+        sHalfSheetPairingProgressHandler.onPairingSuccess(MAC_ADDRESS);
+    }
+}
diff --git a/nearby/tests/unit/src/com/android/server/nearby/fastpair/pairinghandler/NotificationPairingProgressHandlerTest.java b/nearby/tests/unit/src/com/android/server/nearby/fastpair/pairinghandler/NotificationPairingProgressHandlerTest.java
new file mode 100644
index 0000000..24f296c
--- /dev/null
+++ b/nearby/tests/unit/src/com/android/server/nearby/fastpair/pairinghandler/NotificationPairingProgressHandlerTest.java
@@ -0,0 +1,143 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.nearby.fastpair.pairinghandler;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.Mockito.when;
+
+import android.bluetooth.BluetoothManager;
+
+import androidx.annotation.Nullable;
+
+import com.android.server.nearby.common.bluetooth.fastpair.FastPairConnection;
+import com.android.server.nearby.common.locator.Locator;
+import com.android.server.nearby.common.locator.LocatorContextWrapper;
+import com.android.server.nearby.fastpair.cache.DiscoveryItem;
+import com.android.server.nearby.fastpair.cache.FastPairCacheManager;
+import com.android.server.nearby.fastpair.footprint.FootprintsDeviceManager;
+import com.android.server.nearby.fastpair.halfsheet.FastPairHalfSheetManager;
+import com.android.server.nearby.fastpair.notification.FastPairNotificationManager;
+import com.android.server.nearby.fastpair.testing.FakeDiscoveryItems;
+
+import com.google.protobuf.ByteString;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+
+import java.time.Clock;
+
+import service.proto.Cache;
+import service.proto.Rpcs;
+
+public class NotificationPairingProgressHandlerTest {
+
+    @Mock
+    Locator mLocator;
+    @Mock
+    LocatorContextWrapper mContextWrapper;
+    @Mock
+    Clock mClock;
+    @Mock
+    FastPairCacheManager mFastPairCacheManager;
+    @Mock
+    FastPairConnection mFastPairConnection;
+    @Mock
+    FootprintsDeviceManager mFootprintsDeviceManager;
+    @Mock
+    android.bluetooth.BluetoothManager mBluetoothManager;
+
+    private static final String MAC_ADDRESS = "00:11:22:33:44:55";
+    private static final byte[] ACCOUNT_KEY = new byte[]{0x01, 0x02};
+    private static final int SUBSEQUENT_PAIR_START = 1310;
+    private static final int SUBSEQUENT_PAIR_END = 1320;
+    private static DiscoveryItem sDiscoveryItem;
+    private static  NotificationPairingProgressHandler sNotificationPairingProgressHandler;
+
+    @Before
+    public void setup() {
+        MockitoAnnotations.initMocks(this);
+        when(mContextWrapper.getSystemService(BluetoothManager.class))
+                .thenReturn(mBluetoothManager);
+        when(mContextWrapper.getLocator()).thenReturn(mLocator);
+        mLocator.overrideBindingForTest(FastPairCacheManager.class,
+                mFastPairCacheManager);
+        mLocator.overrideBindingForTest(Clock.class, mClock);
+        sDiscoveryItem = FakeDiscoveryItems.newFastPairDiscoveryItem(mContextWrapper);
+        sDiscoveryItem.setStoredItemForTest(
+                sDiscoveryItem.getStoredItemForTest().toBuilder()
+                        .setAuthenticationPublicKeySecp256R1(ByteString.copyFrom(ACCOUNT_KEY))
+                        .setFastPairInformation(
+                                Cache.FastPairInformation.newBuilder()
+                                        .setDeviceType(Rpcs.DeviceType.HEADPHONES).build())
+                        .build());
+        sNotificationPairingProgressHandler = createProgressHandler(ACCOUNT_KEY, sDiscoveryItem);
+    }
+
+    @Test
+    public void getPairEndEventCode() {
+        assertThat(sNotificationPairingProgressHandler
+                .getPairEndEventCode()).isEqualTo(SUBSEQUENT_PAIR_END);
+    }
+
+    @Test
+    public void getPairStartEventCode() {
+        assertThat(sNotificationPairingProgressHandler
+                .getPairStartEventCode()).isEqualTo(SUBSEQUENT_PAIR_START);
+    }
+
+    @Test
+    public void onReadyToPair() {
+        sNotificationPairingProgressHandler.onReadyToPair();
+    }
+
+    @Test
+    public void onPairedCallbackCalled() {
+        sNotificationPairingProgressHandler.onPairedCallbackCalled(mFastPairConnection,
+                    ACCOUNT_KEY, mFootprintsDeviceManager, MAC_ADDRESS);
+    }
+
+    @Test
+    public void  onPairingFailed() {
+        Throwable e = new Throwable("Pairing Failed");
+        sNotificationPairingProgressHandler.onPairingFailed(e);
+    }
+
+    @Test
+    public void onPairingSuccess() {
+        sNotificationPairingProgressHandler.onPairingSuccess(sDiscoveryItem.getMacAddress());
+    }
+
+    private NotificationPairingProgressHandler createProgressHandler(
+            @Nullable byte[] accountKey, DiscoveryItem fastPairItem) {
+        FastPairNotificationManager fastPairNotificationManager =
+                new FastPairNotificationManager(mContextWrapper, fastPairItem, true);
+        FastPairHalfSheetManager fastPairHalfSheetManager =
+                new FastPairHalfSheetManager(mContextWrapper);
+        mLocator.overrideBindingForTest(FastPairHalfSheetManager.class, fastPairHalfSheetManager);
+        NotificationPairingProgressHandler mNotificationPairingProgressHandler =
+                new NotificationPairingProgressHandler(
+                        mContextWrapper,
+                        fastPairItem,
+                        fastPairItem.getAppPackageName(),
+                        accountKey,
+                        fastPairNotificationManager);
+        return mNotificationPairingProgressHandler;
+    }
+}
diff --git a/nearby/tests/unit/src/com/android/server/nearby/fastpair/pairinghandler/PairingProgressHandlerBaseTest.java b/nearby/tests/unit/src/com/android/server/nearby/fastpair/pairinghandler/PairingProgressHandlerBaseTest.java
index 2ade5f2..a3eb50c 100644
--- a/nearby/tests/unit/src/com/android/server/nearby/fastpair/pairinghandler/PairingProgressHandlerBaseTest.java
+++ b/nearby/tests/unit/src/com/android/server/nearby/fastpair/pairinghandler/PairingProgressHandlerBaseTest.java
@@ -20,8 +20,14 @@
 
 import static org.mockito.Mockito.when;
 
+import android.bluetooth.BluetoothAdapter;
+import android.bluetooth.BluetoothDevice;
+import android.bluetooth.BluetoothManager;
+
 import androidx.annotation.Nullable;
 
+import com.android.server.nearby.common.bluetooth.fastpair.FastPairConnection;
+import com.android.server.nearby.common.bluetooth.fastpair.Preferences;
 import com.android.server.nearby.common.locator.Locator;
 import com.android.server.nearby.common.locator.LocatorContextWrapper;
 import com.android.server.nearby.fastpair.cache.DiscoveryItem;
@@ -42,8 +48,8 @@
 
 import service.proto.Cache;
 import service.proto.Rpcs;
-
 public class PairingProgressHandlerBaseTest {
+
     @Mock
     Locator mLocator;
     @Mock
@@ -54,24 +60,46 @@
     FastPairCacheManager mFastPairCacheManager;
     @Mock
     FootprintsDeviceManager mFootprintsDeviceManager;
+    @Mock
+    FastPairConnection mFastPairConnection;
+    @Mock
+    BluetoothManager mBluetoothManager;
+
+    private static final String MAC_ADDRESS = "00:11:22:33:44:55";
     private static final byte[] ACCOUNT_KEY = new byte[]{0x01, 0x02};
+    private static final int PASSKEY = 1234;
+    private static DiscoveryItem sDiscoveryItem;
+    private static PairingProgressHandlerBase sPairingProgressHandlerBase;
+    private static BluetoothDevice sBluetoothDevice;
 
     @Before
     public void setup() {
-
         MockitoAnnotations.initMocks(this);
+        when(mContextWrapper.getSystemService(BluetoothManager.class))
+                .thenReturn(mBluetoothManager);
         when(mContextWrapper.getLocator()).thenReturn(mLocator);
         mLocator.overrideBindingForTest(FastPairCacheManager.class,
                 mFastPairCacheManager);
         mLocator.overrideBindingForTest(Clock.class, mClock);
+        sBluetoothDevice =
+                BluetoothAdapter.getDefaultAdapter().getRemoteDevice("00:11:22:33:44:55");
+        sDiscoveryItem = FakeDiscoveryItems.newFastPairDiscoveryItem(mContextWrapper);
+        sDiscoveryItem.setStoredItemForTest(
+                sDiscoveryItem.getStoredItemForTest().toBuilder()
+                        .setAuthenticationPublicKeySecp256R1(ByteString.copyFrom(ACCOUNT_KEY))
+                        .setFastPairInformation(
+                                Cache.FastPairInformation.newBuilder()
+                                        .setDeviceType(Rpcs.DeviceType.HEADPHONES).build())
+                        .build());
+
+        sPairingProgressHandlerBase =
+                createProgressHandler(ACCOUNT_KEY, sDiscoveryItem, /* isRetroactivePair= */ false);
     }
 
     @Test
     public void createHandler_halfSheetSubsequentPairing_notificationPairingHandlerCreated() {
-
-        DiscoveryItem discoveryItem = FakeDiscoveryItems.newFastPairDiscoveryItem(mContextWrapper);
-        discoveryItem.setStoredItemForTest(
-                discoveryItem.getStoredItemForTest().toBuilder()
+        sDiscoveryItem.setStoredItemForTest(
+                sDiscoveryItem.getStoredItemForTest().toBuilder()
                         .setAuthenticationPublicKeySecp256R1(ByteString.copyFrom(ACCOUNT_KEY))
                         .setFastPairInformation(
                                 Cache.FastPairInformation.newBuilder()
@@ -79,7 +107,7 @@
                         .build());
 
         PairingProgressHandlerBase progressHandler =
-                createProgressHandler(ACCOUNT_KEY, discoveryItem, /* isRetroactivePair= */ false);
+                createProgressHandler(ACCOUNT_KEY, sDiscoveryItem, /* isRetroactivePair= */ false);
 
         assertThat(progressHandler).isInstanceOf(NotificationPairingProgressHandler.class);
     }
@@ -87,20 +115,94 @@
     @Test
     public void createHandler_halfSheetInitialPairing_halfSheetPairingHandlerCreated() {
         // No account key
-        DiscoveryItem discoveryItem = FakeDiscoveryItems.newFastPairDiscoveryItem(mContextWrapper);
-        discoveryItem.setStoredItemForTest(
-                discoveryItem.getStoredItemForTest().toBuilder()
+        sDiscoveryItem.setStoredItemForTest(
+                sDiscoveryItem.getStoredItemForTest().toBuilder()
                         .setFastPairInformation(
                                 Cache.FastPairInformation.newBuilder()
                                         .setDeviceType(Rpcs.DeviceType.HEADPHONES).build())
                         .build());
 
         PairingProgressHandlerBase progressHandler =
-                createProgressHandler(null, discoveryItem, /* isRetroactivePair= */ false);
+                createProgressHandler(null, sDiscoveryItem, /* isRetroactivePair= */ false);
 
         assertThat(progressHandler).isInstanceOf(HalfSheetPairingProgressHandler.class);
     }
 
+    @Test
+    public void onPairingStarted() {
+        sPairingProgressHandlerBase.onPairingStarted();
+    }
+
+    @Test
+    public void onWaitForScreenUnlock() {
+        sPairingProgressHandlerBase.onWaitForScreenUnlock();
+    }
+
+    @Test
+    public void  onScreenUnlocked() {
+        sPairingProgressHandlerBase.onScreenUnlocked();
+    }
+
+    @Test
+    public void onReadyToPair() {
+        sPairingProgressHandlerBase.onReadyToPair();
+    }
+
+    @Test
+    public void  onSetupPreferencesBuilder() {
+        Preferences.Builder prefsBuilder =
+                Preferences.builder()
+                        .setEnableBrEdrHandover(false)
+                        .setIgnoreDiscoveryError(true);
+        sPairingProgressHandlerBase.onSetupPreferencesBuilder(prefsBuilder);
+    }
+
+    @Test
+    public void  onPairingSetupCompleted() {
+        sPairingProgressHandlerBase.onPairingSetupCompleted();
+    }
+
+    @Test
+    public void onHandlePasskeyConfirmation() {
+        sPairingProgressHandlerBase.onHandlePasskeyConfirmation(sBluetoothDevice, PASSKEY);
+    }
+
+    @Test
+    public void getKeyForLocalCache() {
+        FastPairConnection.SharedSecret sharedSecret =
+                FastPairConnection.SharedSecret.create(ACCOUNT_KEY, sDiscoveryItem.getMacAddress());
+        sPairingProgressHandlerBase
+                .getKeyForLocalCache(ACCOUNT_KEY, mFastPairConnection, sharedSecret);
+    }
+
+    @Test
+    public void onPairedCallbackCalled() {
+        sPairingProgressHandlerBase.onPairedCallbackCalled(mFastPairConnection,
+                ACCOUNT_KEY, mFootprintsDeviceManager, MAC_ADDRESS);
+    }
+
+    @Test
+    public void onPairingFailed() {
+        Throwable e = new Throwable("Pairing Failed");
+        sPairingProgressHandlerBase.onPairingFailed(e);
+    }
+
+    @Test
+    public void onPairingSuccess() {
+        sPairingProgressHandlerBase.onPairingSuccess(sDiscoveryItem.getMacAddress());
+    }
+
+    @Test
+    public void  optInFootprintsForInitialPairing() {
+        sPairingProgressHandlerBase.optInFootprintsForInitialPairing(
+                mFootprintsDeviceManager, sDiscoveryItem, ACCOUNT_KEY, null);
+    }
+
+    @Test
+    public void skipWaitingScreenUnlock() {
+        assertThat(sPairingProgressHandlerBase.skipWaitingScreenUnlock()).isFalse();
+    }
+
     private PairingProgressHandlerBase createProgressHandler(
             @Nullable byte[] accountKey, DiscoveryItem fastPairItem, boolean isRetroactivePair) {
         FastPairNotificationManager fastPairNotificationManager =
diff --git a/nearby/tests/unit/src/com/android/server/nearby/fastpair/testing/FakeDiscoveryItems.java b/nearby/tests/unit/src/com/android/server/nearby/fastpair/testing/FakeDiscoveryItems.java
index c406e47..cdec04d 100644
--- a/nearby/tests/unit/src/com/android/server/nearby/fastpair/testing/FakeDiscoveryItems.java
+++ b/nearby/tests/unit/src/com/android/server/nearby/fastpair/testing/FakeDiscoveryItems.java
@@ -22,10 +22,17 @@
 import service.proto.Cache;
 
 public class FakeDiscoveryItems {
-    public static final String DEFAULT_MAC_ADDRESS = "00:11:22:33:44:55";
-    public static final long DEFAULT_TIMESTAMP = 1000000000L;
-    public static final String DEFAULT_DESCRIPITON = "description";
-    public static final String TRIGGER_ID = "trigger.id";
+    private static final String DEFAULT_MAC_ADDRESS = "00:11:22:33:44:55";
+    private static final long DEFAULT_TIMESTAMP = 1000000000L;
+    private static final String DEFAULT_DESCRIPITON = "description";
+    private static final String APP_NAME = "app_name";
+    private static final String ACTION_URL =
+            "intent:#Intent;action=com.android.server.nearby:ACTION_FAST_PAIR;"
+                    + "package=com.google.android.gms;"
+                    + "component=com.google.android.gms/"
+                    + ".nearby.discovery.service.DiscoveryService;end";
+    private static final String DISPLAY_URL = "DISPLAY_URL";
+    private static final String TRIGGER_ID = "trigger.id";
     private static final String FAST_PAIR_ID = "id";
     private static final int RSSI = -80;
     private static final int TX_POWER = -10;
@@ -46,9 +53,36 @@
         item.setMacAddress(DEFAULT_MAC_ADDRESS);
         item.setFirstObservationTimestampMillis(DEFAULT_TIMESTAMP);
         item.setLastObservationTimestampMillis(DEFAULT_TIMESTAMP);
+        item.setActionUrl(ACTION_URL);
+        item.setAppName(APP_NAME);
         item.setRssi(RSSI);
         item.setTxPower(TX_POWER);
+        item.setDisplayUrl(DISPLAY_URL);
         return item.build();
     }
 
+    public static Cache.StoredDiscoveryItem newFastPairDeviceStoredItem(String id,
+            String description, String triggerId, String macAddress, String title,
+            int rssi, int txPower) {
+        Cache.StoredDiscoveryItem.Builder item = Cache.StoredDiscoveryItem.newBuilder();
+        item.setState(Cache.StoredDiscoveryItem.State.STATE_ENABLED);
+        if (id != null) {
+            item.setId(id);
+        }
+        if (description != null) {
+            item.setDescription(description);
+        }
+        if (triggerId != null) {
+            item.setTriggerId(triggerId);
+        }
+        if (macAddress != null) {
+            item.setMacAddress(macAddress);
+        }
+        if (title != null) {
+            item.setTitle(title);
+        }
+        item.setRssi(rssi);
+        item.setTxPower(txPower);
+        return item.build();
+    }
 }
diff --git a/nearby/tests/unit/src/com/android/server/nearby/fastpair/testing/MockingLocator.java b/nearby/tests/unit/src/com/android/server/nearby/fastpair/testing/MockingLocator.java
index b261b26..c9a4533 100644
--- a/nearby/tests/unit/src/com/android/server/nearby/fastpair/testing/MockingLocator.java
+++ b/nearby/tests/unit/src/com/android/server/nearby/fastpair/testing/MockingLocator.java
@@ -41,7 +41,7 @@
     }
 
     @SuppressWarnings("nullness") // due to passing in this before initialized.
-    private MockingLocator(Context context, Locator locator) {
+    public MockingLocator(Context context, Locator locator) {
         super(context, locator);
         this.mLocatorContextWrapper = new LocatorContextWrapper(context, this);
     }
diff --git a/nearby/tests/unit/src/com/android/server/nearby/injector/ContextHubManagerAdapterTest.java b/nearby/tests/unit/src/com/android/server/nearby/injector/ContextHubManagerAdapterTest.java
new file mode 100644
index 0000000..b577064
--- /dev/null
+++ b/nearby/tests/unit/src/com/android/server/nearby/injector/ContextHubManagerAdapterTest.java
@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.nearby.injector;
+
+import android.hardware.location.ContextHubInfo;
+import android.hardware.location.ContextHubManager;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+
+public class ContextHubManagerAdapterTest {
+    private ContextHubManagerAdapter mContextHubManagerAdapter;
+
+    @Mock
+    ContextHubManager mContextHubManager;
+
+    @Before
+    public void setup() {
+        MockitoAnnotations.initMocks(this);
+        mContextHubManagerAdapter = new ContextHubManagerAdapter(mContextHubManager);
+    }
+
+    @Test
+    public void getContextHubs() {
+        mContextHubManagerAdapter.getContextHubs();
+    }
+
+    @Test
+    public void queryNanoApps() {
+        mContextHubManagerAdapter.queryNanoApps(new ContextHubInfo());
+    }
+}
diff --git a/nearby/tests/unit/src/com/android/server/nearby/presence/DataElementHeaderTest.java b/nearby/tests/unit/src/com/android/server/nearby/presence/DataElementHeaderTest.java
new file mode 100644
index 0000000..e186709
--- /dev/null
+++ b/nearby/tests/unit/src/com/android/server/nearby/presence/DataElementHeaderTest.java
@@ -0,0 +1,179 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.nearby.presence;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.junit.Assert.assertThrows;
+
+import android.nearby.BroadcastRequest;
+
+import org.junit.Test;
+
+import java.util.List;
+
+/**
+ * Unit test for {@link DataElementHeader}.
+ */
+public class DataElementHeaderTest {
+
+    private static final int VERSION = BroadcastRequest.PRESENCE_VERSION_V1;
+
+    @Test
+    public void test_illegalLength() {
+        assertThrows(IllegalArgumentException.class,
+                () -> new DataElementHeader(VERSION, 12, 128));
+    }
+
+    @Test
+    public void test_singeByteConversion() {
+        DataElementHeader header = new DataElementHeader(VERSION, 12, 3);
+        byte[] bytes = header.toBytes();
+        assertThat(bytes).isEqualTo(new byte[]{(byte) 0b00111100});
+
+        DataElementHeader afterConversionHeader = DataElementHeader.fromBytes(VERSION, bytes);
+        assertThat(afterConversionHeader.getDataLength()).isEqualTo(3);
+        assertThat(afterConversionHeader.getDataType()).isEqualTo(12);
+    }
+
+    @Test
+    public void test_multipleBytesConversion() {
+        DataElementHeader header = new DataElementHeader(VERSION, 6, 100);
+        DataElementHeader afterConversionHeader =
+                DataElementHeader.fromBytes(VERSION, header.toBytes());
+        assertThat(afterConversionHeader.getDataLength()).isEqualTo(100);
+        assertThat(afterConversionHeader.getDataType()).isEqualTo(6);
+    }
+
+    @Test
+    public void test_fromBytes() {
+        // Single byte case.
+        byte[] singleByte = new byte[]{(byte) 0b01011101};
+        DataElementHeader singeByteHeader = DataElementHeader.fromBytes(VERSION, singleByte);
+        assertThat(singeByteHeader.getDataLength()).isEqualTo(5);
+        assertThat(singeByteHeader.getDataType()).isEqualTo(13);
+
+        // Two bytes case.
+        byte[] twoBytes = new byte[]{(byte) 0b11011101, (byte) 0b01011101};
+        DataElementHeader twoBytesHeader = DataElementHeader.fromBytes(VERSION, twoBytes);
+        assertThat(twoBytesHeader.getDataLength()).isEqualTo(93);
+        assertThat(twoBytesHeader.getDataType()).isEqualTo(93);
+
+        // Three bytes case.
+        byte[] threeBytes = new byte[]{(byte) 0b11011101, (byte) 0b11111111, (byte) 0b01011101};
+        DataElementHeader threeBytesHeader = DataElementHeader.fromBytes(VERSION, threeBytes);
+        assertThat(threeBytesHeader.getDataLength()).isEqualTo(93);
+        assertThat(threeBytesHeader.getDataType()).isEqualTo(16349);
+
+        // Four bytes case.
+        byte[] fourBytes = new byte[]{
+                (byte) 0b11011101, (byte) 0b11111111, (byte) 0b11111111, (byte) 0b01011101};
+
+        DataElementHeader fourBytesHeader = DataElementHeader.fromBytes(VERSION, fourBytes);
+        assertThat(fourBytesHeader.getDataLength()).isEqualTo(93);
+        assertThat(fourBytesHeader.getDataType()).isEqualTo(2097117);
+    }
+
+    @Test
+    public void test_fromBytesIllegal_singleByte() {
+        assertThrows(IllegalArgumentException.class,
+                () -> DataElementHeader.fromBytes(VERSION, new byte[]{(byte) 0b11011101}));
+    }
+
+    @Test
+    public void test_fromBytesIllegal_twoBytes_wrongFirstByte() {
+        assertThrows(IllegalArgumentException.class,
+                () -> DataElementHeader.fromBytes(VERSION,
+                        new byte[]{(byte) 0b01011101, (byte) 0b01011101}));
+    }
+
+    @Test
+    public void test_fromBytesIllegal_twoBytes_wrongLastByte() {
+        assertThrows(IllegalArgumentException.class,
+                () -> DataElementHeader.fromBytes(VERSION,
+                        new byte[]{(byte) 0b11011101, (byte) 0b11011101}));
+    }
+
+    @Test
+    public void test_fromBytesIllegal_threeBytes() {
+        assertThrows(IllegalArgumentException.class,
+                () -> DataElementHeader.fromBytes(VERSION,
+                        new byte[]{(byte) 0b11011101, (byte) 0b11011101, (byte) 0b11011101}));
+    }
+
+    @Test
+    public void test_multipleBytesConversion_largeNumber() {
+        DataElementHeader header = new DataElementHeader(VERSION, 22213546, 66);
+        DataElementHeader afterConversionHeader =
+                DataElementHeader.fromBytes(VERSION, header.toBytes());
+        assertThat(afterConversionHeader.getDataLength()).isEqualTo(66);
+        assertThat(afterConversionHeader.getDataType()).isEqualTo(22213546);
+    }
+
+    @Test
+    public void test_isExtending() {
+        assertThat(DataElementHeader.isExtending((byte) 0b10000100)).isTrue();
+        assertThat(DataElementHeader.isExtending((byte) 0b01110100)).isFalse();
+        assertThat(DataElementHeader.isExtending((byte) 0b00000000)).isFalse();
+    }
+
+    @Test
+    public void test_convertTag() {
+        assertThat(DataElementHeader.convertTag(true)).isEqualTo((byte) 128);
+        assertThat(DataElementHeader.convertTag(false)).isEqualTo(0);
+    }
+
+    @Test
+    public void test_getHeaderValue() {
+        assertThat(DataElementHeader.getHeaderValue((byte) 0b10000100)).isEqualTo(4);
+        assertThat(DataElementHeader.getHeaderValue((byte) 0b00000100)).isEqualTo(4);
+        assertThat(DataElementHeader.getHeaderValue((byte) 0b11010100)).isEqualTo(84);
+        assertThat(DataElementHeader.getHeaderValue((byte) 0b01010100)).isEqualTo(84);
+    }
+
+    @Test
+    public void test_convertTypeMultipleIntList() {
+        List<Byte> list = DataElementHeader.convertTypeMultipleBytes(128);
+        assertThat(list.size()).isEqualTo(2);
+        assertThat(list.get(0)).isEqualTo((byte) 0b10000001);
+        assertThat(list.get(1)).isEqualTo((byte) 0b00000000);
+
+        List<Byte> list2 = DataElementHeader.convertTypeMultipleBytes(10);
+        assertThat(list2.size()).isEqualTo(1);
+        assertThat(list2.get(0)).isEqualTo((byte) 0b00001010);
+
+        List<Byte> list3 = DataElementHeader.convertTypeMultipleBytes(5242398);
+        assertThat(list3.size()).isEqualTo(4);
+        assertThat(list3.get(0)).isEqualTo((byte) 0b10000010);
+        assertThat(list3.get(1)).isEqualTo((byte) 0b10111111);
+        assertThat(list3.get(2)).isEqualTo((byte) 0b11111100);
+        assertThat(list3.get(3)).isEqualTo((byte) 0b00011110);
+    }
+
+    @Test
+    public void test_getTypeMultipleBytes() {
+        byte[] inputBytes = new byte[]{(byte) 0b11011000, (byte) 0b10000000, (byte) 0b00001001};
+        // 0b101100000000000001001
+        assertThat(DataElementHeader.getTypeMultipleBytes(inputBytes)).isEqualTo(1441801);
+
+        byte[] inputBytes2 = new byte[]{(byte) 0b00010010};
+        assertThat(DataElementHeader.getTypeMultipleBytes(inputBytes2)).isEqualTo(18);
+
+        byte[] inputBytes3 = new byte[]{(byte) 0b10000001, (byte) 0b00000000};
+        assertThat(DataElementHeader.getTypeMultipleBytes(inputBytes3)).isEqualTo(128);
+    }
+}
diff --git a/nearby/tests/unit/src/com/android/server/nearby/presence/ExtendedAdvertisementTest.java b/nearby/tests/unit/src/com/android/server/nearby/presence/ExtendedAdvertisementTest.java
new file mode 100644
index 0000000..895df69
--- /dev/null
+++ b/nearby/tests/unit/src/com/android/server/nearby/presence/ExtendedAdvertisementTest.java
@@ -0,0 +1,261 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.nearby.presence;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import android.nearby.BroadcastRequest;
+import android.nearby.DataElement;
+import android.nearby.PresenceBroadcastRequest;
+import android.nearby.PresenceCredential;
+import android.nearby.PrivateCredential;
+import android.nearby.PublicCredential;
+
+import com.android.server.nearby.util.encryption.CryptorImpIdentityV1;
+import com.android.server.nearby.util.encryption.CryptorImpV1;
+
+import org.junit.Before;
+import org.junit.Test;
+
+import java.nio.ByteBuffer;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+public class ExtendedAdvertisementTest {
+    private static final int IDENTITY_TYPE = PresenceCredential.IDENTITY_TYPE_PRIVATE;
+    private static final int DATA_TYPE_MODEL_ID = 7;
+    private static final int DATA_TYPE_BLE_ADDRESS = 101;
+    private static final int DATA_TYPE_PUBLIC_IDENTITY = 3;
+    private static final byte[] MODE_ID_DATA =
+            new byte[]{2, 1, 30, 2, 10, -16, 6, 22, 44, -2, -86, -69, -52};
+    private static final byte[] BLE_ADDRESS = new byte[]{124, 4, 56, 60, 120, -29, -90};
+    private static final DataElement MODE_ID_ADDRESS_ELEMENT =
+            new DataElement(DATA_TYPE_MODEL_ID, MODE_ID_DATA);
+    private static final DataElement BLE_ADDRESS_ELEMENT =
+            new DataElement(DATA_TYPE_BLE_ADDRESS, BLE_ADDRESS);
+
+    private static final byte[] IDENTITY =
+            new byte[]{1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4};
+    private static final int MEDIUM_TYPE_BLE = 0;
+    private static final byte[] SALT = {2, 3};
+    private static final int PRESENCE_ACTION_1 = 1;
+    private static final int PRESENCE_ACTION_2 = 2;
+
+    private static final byte[] SECRET_ID = new byte[]{1, 2, 3, 4};
+    private static final byte[] AUTHENTICITY_KEY =
+            new byte[]{-97, 10, 107, -86, 25, 65, -54, -95, -72, 59, 54, 93, 9, 3, -24, -88};
+    private static final byte[] PUBLIC_KEY =
+            new byte[] {
+                    48, 89, 48, 19, 6, 7, 42, -122, 72, -50, 61, 2, 1, 6, 8, 42, -122, 72, -50, 61,
+                    66, 0, 4, -56, -39, -92, 69, 0, 52, 23, 67, 83, -14, 75, 52, -14, -5, -41, 48,
+                    -83, 31, 42, -39, 102, -13, 22, -73, -73, 86, 30, -96, -84, -13, 4, 122, 104,
+                    -65, 64, 91, -109, -45, -35, -56, 55, -79, 47, -85, 27, -96, -119, -82, -80,
+                    123, 41, -119, -25, 1, -112, 112
+            };
+    private static final byte[] ENCRYPTED_METADATA_BYTES =
+            new byte[] {
+                    -44, -25, -95, -124, -7, 90, 116, -8, 7, -120, -23, -22, -106, -44, -19, 61,
+                    -18, 39, 29, 78, 108, -11, -39, 85, -30, 64, -99, 102, 65, 37, -42, 114, -37,
+                    88, -112, 8, -75, -53, 23, -16, -104, 67, 49, 48, -53, 73, -109, 44, -23, -11,
+                    -118, -61, -37, -104, 60, 105, 115, 1, 56, -89, -107, -45, -116, -1, -25, 84,
+                    -19, -128, 81, 11, 92, 77, -58, 82, 122, 123, 31, -87, -57, 70, 23, -81, 7, 2,
+                    -114, -83, 74, 124, -68, -98, 47, 91, 9, 48, -67, 41, -7, -97, 78, 66, -65, 58,
+                    -4, -46, -30, -85, -50, 100, 46, -66, -128, 7, 66, 9, 88, 95, 12, -13, 81, -91,
+            };
+    private static final byte[] METADATA_ENCRYPTION_KEY_TAG =
+            new byte[] {-126, -104, 1, -1, 26, -46, -68, -86};
+    private static final String DEVICE_NAME = "test_device";
+
+    private PresenceBroadcastRequest.Builder mBuilder;
+    private PrivateCredential mPrivateCredential;
+    private PublicCredential mPublicCredential;
+
+    @Before
+    public void setUp() {
+        mPrivateCredential =
+                new PrivateCredential.Builder(SECRET_ID, AUTHENTICITY_KEY, IDENTITY, DEVICE_NAME)
+                        .setIdentityType(PresenceCredential.IDENTITY_TYPE_PRIVATE)
+                        .build();
+        mPublicCredential =
+                new PublicCredential.Builder(SECRET_ID, AUTHENTICITY_KEY, PUBLIC_KEY,
+                        ENCRYPTED_METADATA_BYTES, METADATA_ENCRYPTION_KEY_TAG)
+                        .build();
+        mBuilder =
+                new PresenceBroadcastRequest.Builder(Collections.singletonList(MEDIUM_TYPE_BLE),
+                        SALT, mPrivateCredential)
+                        .setVersion(BroadcastRequest.PRESENCE_VERSION_V1)
+                        .addAction(PRESENCE_ACTION_1)
+                        .addAction(PRESENCE_ACTION_2)
+                        .addExtendedProperty(new DataElement(DATA_TYPE_BLE_ADDRESS, BLE_ADDRESS))
+                        .addExtendedProperty(new DataElement(DATA_TYPE_MODEL_ID, MODE_ID_DATA));
+    }
+
+    @Test
+    public void test_createFromRequest() {
+        ExtendedAdvertisement originalAdvertisement = ExtendedAdvertisement.createFromRequest(
+                mBuilder.build());
+
+        assertThat(originalAdvertisement.getActions())
+                .containsExactly(PRESENCE_ACTION_1, PRESENCE_ACTION_2);
+        assertThat(originalAdvertisement.getIdentity()).isEqualTo(IDENTITY);
+        assertThat(originalAdvertisement.getIdentityType()).isEqualTo(IDENTITY_TYPE);
+        assertThat(originalAdvertisement.getLength()).isEqualTo(66);
+        assertThat(originalAdvertisement.getVersion()).isEqualTo(
+                BroadcastRequest.PRESENCE_VERSION_V1);
+        assertThat(originalAdvertisement.getSalt()).isEqualTo(SALT);
+        assertThat(originalAdvertisement.getDataElements())
+                .containsExactly(MODE_ID_ADDRESS_ELEMENT, BLE_ADDRESS_ELEMENT);
+    }
+
+    @Test
+    public void test_createFromRequest_encodeAndDecode() {
+        ExtendedAdvertisement originalAdvertisement = ExtendedAdvertisement.createFromRequest(
+                mBuilder.build());
+
+        byte[] generatedBytes = originalAdvertisement.toBytes();
+
+        ExtendedAdvertisement newAdvertisement =
+                ExtendedAdvertisement.fromBytes(generatedBytes, mPublicCredential);
+
+        assertThat(newAdvertisement.getActions())
+                .containsExactly(PRESENCE_ACTION_1, PRESENCE_ACTION_2);
+        assertThat(newAdvertisement.getIdentity()).isEqualTo(IDENTITY);
+        assertThat(newAdvertisement.getIdentityType()).isEqualTo(IDENTITY_TYPE);
+        assertThat(newAdvertisement.getLength()).isEqualTo(66);
+        assertThat(newAdvertisement.getVersion()).isEqualTo(
+                BroadcastRequest.PRESENCE_VERSION_V1);
+        assertThat(newAdvertisement.getSalt()).isEqualTo(SALT);
+        assertThat(newAdvertisement.getDataElements())
+                .containsExactly(MODE_ID_ADDRESS_ELEMENT, BLE_ADDRESS_ELEMENT);
+    }
+
+    @Test
+    public void test_createFromRequest_invalidParameter() {
+        // invalid version
+        mBuilder.setVersion(BroadcastRequest.PRESENCE_VERSION_V0);
+        assertThat(ExtendedAdvertisement.createFromRequest(mBuilder.build())).isNull();
+
+        // invalid salt
+        PresenceBroadcastRequest.Builder builder =
+                new PresenceBroadcastRequest.Builder(Collections.singletonList(MEDIUM_TYPE_BLE),
+                        new byte[]{1, 2, 3}, mPrivateCredential)
+                        .setVersion(BroadcastRequest.PRESENCE_VERSION_V1)
+                        .addAction(PRESENCE_ACTION_1);
+        assertThat(ExtendedAdvertisement.createFromRequest(builder.build())).isNull();
+
+        // invalid identity
+        PrivateCredential privateCredential =
+                new PrivateCredential.Builder(SECRET_ID,
+                        AUTHENTICITY_KEY, new byte[]{1, 2, 3, 4}, DEVICE_NAME)
+                        .setIdentityType(PresenceCredential.IDENTITY_TYPE_PRIVATE)
+                        .build();
+        PresenceBroadcastRequest.Builder builder2 =
+                new PresenceBroadcastRequest.Builder(Collections.singletonList(MEDIUM_TYPE_BLE),
+                        new byte[]{1, 2, 3}, privateCredential)
+                        .setVersion(BroadcastRequest.PRESENCE_VERSION_V1)
+                        .addAction(PRESENCE_ACTION_1);
+        assertThat(ExtendedAdvertisement.createFromRequest(builder2.build())).isNull();
+
+        // empty action
+        PresenceBroadcastRequest.Builder builder3 =
+                new PresenceBroadcastRequest.Builder(Collections.singletonList(MEDIUM_TYPE_BLE),
+                        SALT, mPrivateCredential)
+                        .setVersion(BroadcastRequest.PRESENCE_VERSION_V1);
+        assertThat(ExtendedAdvertisement.createFromRequest(builder3.build())).isNull();
+    }
+
+    @Test
+    public void test_toBytes() {
+        ExtendedAdvertisement adv = ExtendedAdvertisement.createFromRequest(mBuilder.build());
+        assertThat(adv.toBytes()).isEqualTo(getExtendedAdvertisementByteArray());
+    }
+
+    @Test
+    public void test_fromBytes() {
+        byte[] originalBytes = getExtendedAdvertisementByteArray();
+        ExtendedAdvertisement adv =
+                ExtendedAdvertisement.fromBytes(originalBytes, mPublicCredential);
+
+        assertThat(adv.getActions())
+                .containsExactly(PRESENCE_ACTION_1, PRESENCE_ACTION_2);
+        assertThat(adv.getIdentity()).isEqualTo(IDENTITY);
+        assertThat(adv.getIdentityType()).isEqualTo(IDENTITY_TYPE);
+        assertThat(adv.getLength()).isEqualTo(66);
+        assertThat(adv.getVersion()).isEqualTo(
+                BroadcastRequest.PRESENCE_VERSION_V1);
+        assertThat(adv.getSalt()).isEqualTo(SALT);
+        assertThat(adv.getDataElements())
+                .containsExactly(MODE_ID_ADDRESS_ELEMENT, BLE_ADDRESS_ELEMENT);
+    }
+
+    @Test
+    public void test_toString() {
+        ExtendedAdvertisement adv = ExtendedAdvertisement.createFromRequest(mBuilder.build());
+        assertThat(adv.toString()).isEqualTo("ExtendedAdvertisement:"
+                + "<VERSION: 1, length: 66, dataElementCount: 2, identityType: 1, "
+                + "identity: [1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4], salt: [2, 3],"
+                + " actions: [1, 2]>");
+    }
+
+    @Test
+    public void test_getDataElements_accordingToType() {
+        ExtendedAdvertisement adv = ExtendedAdvertisement.createFromRequest(mBuilder.build());
+        List<DataElement> dataElements = new ArrayList<>();
+
+        dataElements.add(BLE_ADDRESS_ELEMENT);
+        assertThat(adv.getDataElements(DATA_TYPE_BLE_ADDRESS)).isEqualTo(dataElements);
+        assertThat(adv.getDataElements(DATA_TYPE_PUBLIC_IDENTITY)).isEmpty();
+    }
+
+    private static byte[] getExtendedAdvertisementByteArray() {
+        ByteBuffer buffer = ByteBuffer.allocate(66);
+        buffer.put((byte) 0b00100000); // Header V1
+        buffer.put((byte) 0b00100000); // Salt header: length 2, type 0
+        // Salt data
+        buffer.put(SALT);
+        // Identity header: length 16, type 1 (private identity)
+        buffer.put(new byte[]{(byte) 0b10010000, (byte) 0b00000001});
+        // Identity data
+        buffer.put(CryptorImpIdentityV1.getInstance().encrypt(IDENTITY, SALT, AUTHENTICITY_KEY));
+
+        ByteBuffer deBuffer = ByteBuffer.allocate(28);
+        // Action1 header: length 1, type 6
+        deBuffer.put(new byte[]{(byte) 0b00010110});
+        // Action1 data
+        deBuffer.put((byte) PRESENCE_ACTION_1);
+        // Action2 header: length 1, type 6
+        deBuffer.put(new byte[]{(byte) 0b00010110});
+        // Action2 data
+        deBuffer.put((byte) PRESENCE_ACTION_2);
+        // Ble address header: length 7, type 102
+        deBuffer.put(new byte[]{(byte) 0b10000111, (byte) 0b01100101});
+        // Ble address data
+        deBuffer.put(BLE_ADDRESS);
+        // model id header: length 13, type 7
+        deBuffer.put(new byte[]{(byte) 0b10001101, (byte) 0b00000111});
+        // model id data
+        deBuffer.put(MODE_ID_DATA);
+
+        byte[] data = deBuffer.array();
+        CryptorImpV1 cryptor = CryptorImpV1.getInstance();
+        buffer.put(cryptor.encrypt(data, SALT, AUTHENTICITY_KEY));
+        buffer.put(cryptor.sign(data, AUTHENTICITY_KEY));
+
+        return buffer.array();
+    }
+}
diff --git a/nearby/tests/unit/src/com/android/server/nearby/presence/ExtendedAdvertisementUtilsTest.java b/nearby/tests/unit/src/com/android/server/nearby/presence/ExtendedAdvertisementUtilsTest.java
new file mode 100644
index 0000000..c4fccf7
--- /dev/null
+++ b/nearby/tests/unit/src/com/android/server/nearby/presence/ExtendedAdvertisementUtilsTest.java
@@ -0,0 +1,103 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.nearby.presence;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import android.nearby.BroadcastRequest;
+import android.nearby.DataElement;
+
+import org.junit.Test;
+
+import java.util.Arrays;
+
+/**
+ * Unit test for {@link ExtendedAdvertisementUtils}.
+ */
+public class ExtendedAdvertisementUtilsTest {
+    private static final byte[] ADVERTISEMENT1 = new byte[]{0b00100000, 12, 34, 78, 10};
+    private static final byte[] ADVERTISEMENT2 = new byte[]{0b00100000, 0b00100011, 34, 78,
+            (byte) 0b10010000, (byte) 0b00000100,
+            1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16};
+
+    private static final int DATA_TYPE_SALT = 3;
+    private static final int DATA_TYPE_PRIVATE_IDENTITY = 4;
+
+    @Test
+    public void test_constructHeader() {
+        assertThat(ExtendedAdvertisementUtils.constructHeader(1)).isEqualTo(0b100000);
+        assertThat(ExtendedAdvertisementUtils.constructHeader(0)).isEqualTo(0);
+        assertThat(ExtendedAdvertisementUtils.constructHeader(6)).isEqualTo((byte) 0b11000000);
+    }
+
+    @Test
+    public void test_getVersion() {
+        assertThat(ExtendedAdvertisementUtils.getVersion(ADVERTISEMENT1)).isEqualTo(1);
+        byte[] adv = new byte[]{(byte) 0b10111100, 9, 19, 90, 23};
+        assertThat(ExtendedAdvertisementUtils.getVersion(adv)).isEqualTo(5);
+        byte[] adv2 = new byte[]{(byte) 0b10011111, 9, 19, 90, 23};
+        assertThat(ExtendedAdvertisementUtils.getVersion(adv2)).isEqualTo(4);
+    }
+
+    @Test
+    public void test_getDataElementHeader_salt() {
+        byte[] saltHeaderArray = ExtendedAdvertisementUtils.getDataElementHeader(ADVERTISEMENT2, 1);
+        DataElementHeader header = DataElementHeader.fromBytes(
+                BroadcastRequest.PRESENCE_VERSION_V1, saltHeaderArray);
+        assertThat(header.getDataType()).isEqualTo(DATA_TYPE_SALT);
+        assertThat(header.getDataLength()).isEqualTo(ExtendedAdvertisement.SALT_DATA_LENGTH);
+    }
+
+    @Test
+    public void test_getDataElementHeader_identity() {
+        byte[] identityHeaderArray =
+                ExtendedAdvertisementUtils.getDataElementHeader(ADVERTISEMENT2, 4);
+        DataElementHeader header = DataElementHeader.fromBytes(BroadcastRequest.PRESENCE_VERSION_V1,
+                identityHeaderArray);
+        assertThat(header.getDataType()).isEqualTo(DATA_TYPE_PRIVATE_IDENTITY);
+        assertThat(header.getDataLength()).isEqualTo(ExtendedAdvertisement.IDENTITY_DATA_LENGTH);
+    }
+
+    @Test
+    public void test_constructDataElement_salt() {
+        DataElement salt = new DataElement(DATA_TYPE_SALT, new byte[]{13, 14});
+        byte[] saltArray = ExtendedAdvertisementUtils.convertDataElementToBytes(salt);
+        // Data length and salt header length.
+        assertThat(saltArray.length).isEqualTo(ExtendedAdvertisement.SALT_DATA_LENGTH + 1);
+        // Header
+        assertThat(saltArray[0]).isEqualTo((byte) 0b00100011);
+        // Data
+        assertThat(saltArray[1]).isEqualTo((byte) 13);
+        assertThat(saltArray[2]).isEqualTo((byte) 14);
+    }
+
+    @Test
+    public void test_constructDataElement_privateIdentity() {
+        byte[] identityData = new byte[]{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16};
+        DataElement identity = new DataElement(DATA_TYPE_PRIVATE_IDENTITY, identityData);
+        byte[] identityArray = ExtendedAdvertisementUtils.convertDataElementToBytes(identity);
+        // Data length and identity header length.
+        assertThat(identityArray.length).isEqualTo(ExtendedAdvertisement.IDENTITY_DATA_LENGTH + 2);
+        // 1st header byte
+        assertThat(identityArray[0]).isEqualTo((byte) 0b10010000);
+        // 2st header byte
+        assertThat(identityArray[1]).isEqualTo((byte) 0b00000100);
+        // Data
+        assertThat(Arrays.copyOfRange(identityArray, 2, identityArray.length))
+                .isEqualTo(identityData);
+    }
+}
diff --git a/nearby/tests/unit/src/com/android/server/nearby/presence/FastAdvertisementTest.java b/nearby/tests/unit/src/com/android/server/nearby/presence/FastAdvertisementTest.java
index 5e0ccbe..8e3e068 100644
--- a/nearby/tests/unit/src/com/android/server/nearby/presence/FastAdvertisementTest.java
+++ b/nearby/tests/unit/src/com/android/server/nearby/presence/FastAdvertisementTest.java
@@ -75,6 +75,15 @@
         assertThat(originalAdvertisement.getVersion()).isEqualTo(
                 BroadcastRequest.PRESENCE_VERSION_V0);
         assertThat(originalAdvertisement.getSalt()).isEqualTo(SALT);
+        assertThat(originalAdvertisement.getTxPower()).isEqualTo(TX_POWER);
+        assertThat(originalAdvertisement.toString())
+                .isEqualTo("FastAdvertisement:<VERSION: 0, length: 19,"
+                        + " ltvFieldCount: 4,"
+                        + " identityType: 1,"
+                        + " identity: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1],"
+                        + " salt: [2, 3],"
+                        + " actions: [123],"
+                        + " txPower: 4");
     }
 
     @Test
diff --git a/nearby/tests/unit/src/com/android/server/nearby/presence/PresenceDiscoveryResultTest.java b/nearby/tests/unit/src/com/android/server/nearby/presence/PresenceDiscoveryResultTest.java
index 39cab94..856c1a8 100644
--- a/nearby/tests/unit/src/com/android/server/nearby/presence/PresenceDiscoveryResultTest.java
+++ b/nearby/tests/unit/src/com/android/server/nearby/presence/PresenceDiscoveryResultTest.java
@@ -18,6 +18,8 @@
 
 import static com.google.common.truth.Truth.assertThat;
 
+import android.nearby.DataElement;
+import android.nearby.NearbyDeviceParcelable;
 import android.nearby.PresenceCredential;
 import android.nearby.PresenceDevice;
 import android.nearby.PresenceScanFilter;
@@ -28,12 +30,15 @@
 import org.junit.Before;
 import org.junit.Test;
 
-import java.util.Arrays;
+import java.util.ArrayList;
+import java.util.List;
 
 /**
  * Unit tests for {@link PresenceDiscoveryResult}.
  */
 public class PresenceDiscoveryResultTest {
+    private static final int DATA_TYPE_ACCOUNT_KEY = 9;
+    private static final int DATA_TYPE_INTENT = 6;
     private static final int PRESENCE_ACTION = 123;
     private static final int TX_POWER = -1;
     private static final int RSSI = -41;
@@ -43,6 +48,8 @@
     private static final byte[] PUBLIC_KEY = new byte[]{1, 1, 2, 2};
     private static final byte[] ENCRYPTED_METADATA = new byte[]{1, 2, 3, 4, 5};
     private static final byte[] METADATA_ENCRYPTION_KEY_TAG = new byte[]{1, 1, 3, 4, 5};
+    private static final byte[] META_DATA_ENCRYPTION_KEY =
+            new byte[] {-39, -55, 115, 78, -57, 40, 115, 0, -112, 86, -86, 7, -42, 68, 11, 12};
 
     private PresenceDiscoveryResult.Builder mBuilder;
     private PublicCredential mCredential;
@@ -59,18 +66,68 @@
                 .setSalt(SALT)
                 .setTxPower(TX_POWER)
                 .setRssi(RSSI)
+                .setEncryptedIdentityTag(METADATA_ENCRYPTION_KEY_TAG)
                 .addPresenceAction(PRESENCE_ACTION);
     }
 
     @Test
     @SdkSuppress(minSdkVersion = 32, codeName = "T")
-    public void testToDevice() {
-        PresenceDiscoveryResult discoveryResult = mBuilder.build();
-        PresenceDevice presenceDevice = discoveryResult.toPresenceDevice();
+    public void testFromDevice() {
+        NearbyDeviceParcelable.Builder builder = new NearbyDeviceParcelable.Builder();
+        builder.setTxPower(TX_POWER)
+                .setRssi(RSSI)
+                .setEncryptionKeyTag(METADATA_ENCRYPTION_KEY_TAG)
+                .setSalt(SALT)
+                .setPublicCredential(mCredential);
 
-        assertThat(presenceDevice.getRssi()).isEqualTo(RSSI);
-        assertThat(Arrays.equals(presenceDevice.getSalt(), SALT)).isTrue();
-        assertThat(Arrays.equals(presenceDevice.getSecretId(), SECRET_ID)).isTrue();
+        PresenceDiscoveryResult discoveryResult =
+                PresenceDiscoveryResult.fromDevice(builder.build());
+        PresenceScanFilter scanFilter = new PresenceScanFilter.Builder()
+                .setMaxPathLoss(80)
+                .addCredential(mCredential)
+                .build();
+
+        assertThat(discoveryResult.matches(scanFilter)).isTrue();
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testFromDevice_presenceDeviceAvailable() {
+        NearbyDeviceParcelable.Builder builder = new NearbyDeviceParcelable.Builder();
+        PresenceDevice presenceDevice =
+                new PresenceDevice.Builder("123", SALT, SECRET_ID, META_DATA_ENCRYPTION_KEY)
+                        .addExtendedProperty(new DataElement(
+                                DATA_TYPE_INTENT, new byte[]{(byte) PRESENCE_ACTION}))
+                        .build();
+        builder.setTxPower(TX_POWER)
+                .setRssi(RSSI)
+                .setEncryptionKeyTag(METADATA_ENCRYPTION_KEY_TAG)
+                .setPresenceDevice(presenceDevice)
+                .setPublicCredential(mCredential);
+
+        PresenceDiscoveryResult discoveryResult =
+                PresenceDiscoveryResult.fromDevice(builder.build());
+        PresenceScanFilter scanFilter = new PresenceScanFilter.Builder()
+                .setMaxPathLoss(80)
+                .addPresenceAction(PRESENCE_ACTION)
+                .addCredential(mCredential)
+                .build();
+
+        assertThat(discoveryResult.matches(scanFilter)).isTrue();
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testAccountMatches() {
+        DataElement accountKey = new DataElement(DATA_TYPE_ACCOUNT_KEY, new byte[]{1, 2, 3, 4});
+        mBuilder.addExtendedProperties(List.of(accountKey));
+        PresenceDiscoveryResult discoveryResult = mBuilder.build();
+
+        List<DataElement> extendedProperties = new ArrayList<>();
+        extendedProperties.add(new DataElement(DATA_TYPE_ACCOUNT_KEY, new byte[]{1, 2, 3, 4}));
+        extendedProperties.add(new DataElement(DATA_TYPE_INTENT,
+                new byte[]{(byte) PRESENCE_ACTION}));
+        assertThat(discoveryResult.accountKeyMatches(extendedProperties)).isTrue();
     }
 
     @Test
@@ -86,4 +143,24 @@
         assertThat(discoveryResult.matches(scanFilter)).isTrue();
     }
 
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void test_notMatches() {
+        PresenceDiscoveryResult.Builder builder = new PresenceDiscoveryResult.Builder()
+                .setPublicCredential(mCredential)
+                .setSalt(SALT)
+                .setTxPower(TX_POWER)
+                .setRssi(RSSI)
+                .setEncryptedIdentityTag(new byte[]{5, 4, 3, 2, 1})
+                .addPresenceAction(PRESENCE_ACTION);
+
+        PresenceScanFilter scanFilter = new PresenceScanFilter.Builder()
+                .setMaxPathLoss(80)
+                .addPresenceAction(PRESENCE_ACTION)
+                .addCredential(mCredential)
+                .build();
+
+        PresenceDiscoveryResult discoveryResult = builder.build();
+        assertThat(discoveryResult.matches(scanFilter)).isFalse();
+    }
 }
diff --git a/nearby/tests/unit/src/com/android/server/nearby/presence/PresenceManagerTest.java b/nearby/tests/unit/src/com/android/server/nearby/presence/PresenceManagerTest.java
new file mode 100644
index 0000000..9deb1eb
--- /dev/null
+++ b/nearby/tests/unit/src/com/android/server/nearby/presence/PresenceManagerTest.java
@@ -0,0 +1,84 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.nearby.presence;
+
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.times;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import android.content.Context;
+import android.nearby.DataElement;
+import android.nearby.PresenceDevice;
+
+import androidx.test.filters.SdkSuppress;
+import androidx.test.platform.app.InstrumentationRegistry;
+
+import com.android.server.nearby.common.locator.LocatorContextWrapper;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+
+public class PresenceManagerTest {
+    private static final byte[] IDENTITY =
+            new byte[] {1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4};
+    private static final byte[] SALT = {2, 3};
+    private static final byte[] SECRET_ID =
+            new byte[] {-97, 10, 107, -86, 25, 65, -54, -95, -72, 59, 54, 93, 9, 3, -24, -88};
+
+    @Mock private Context mContext;
+    private LocatorContextWrapper mLocatorContextWrapper;
+    private PresenceManager mPresenceManager;
+
+    @Before
+    public void setup() {
+        MockitoAnnotations.initMocks(this);
+
+        mLocatorContextWrapper = new LocatorContextWrapper(mContext);
+        mPresenceManager = new PresenceManager(mLocatorContextWrapper);
+        when(mContext.getContentResolver())
+                .thenReturn(InstrumentationRegistry.getInstrumentation()
+                        .getContext().getContentResolver());
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testInit() {
+        mPresenceManager.initiate();
+
+        verify(mContext, times(1)).registerReceiver(any(), any());
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testDeviceStatusUpdated() {
+        DataElement dataElement1 = new DataElement(1, new byte[] {1, 2});
+        DataElement dataElement2 = new DataElement(2, new byte[] {-1, -2, 3, 4, 5, 6, 7, 8, 9});
+
+        PresenceDevice presenceDevice =
+                new PresenceDevice.Builder(/* deviceId= */ "deviceId", SALT, SECRET_ID, IDENTITY)
+                        .addExtendedProperty(dataElement1)
+                        .addExtendedProperty(dataElement2)
+                        .build();
+
+        mPresenceManager.mScanCallback.onDiscovered(presenceDevice);
+        mPresenceManager.mScanCallback.onUpdated(presenceDevice);
+        mPresenceManager.mScanCallback.onLost(presenceDevice);
+    }
+}
diff --git a/nearby/tests/unit/src/com/android/server/nearby/provider/BleBroadcastProviderTest.java b/nearby/tests/unit/src/com/android/server/nearby/provider/BleBroadcastProviderTest.java
index d06a785..05b556b 100644
--- a/nearby/tests/unit/src/com/android/server/nearby/provider/BleBroadcastProviderTest.java
+++ b/nearby/tests/unit/src/com/android/server/nearby/provider/BleBroadcastProviderTest.java
@@ -16,6 +16,7 @@
 
 package com.android.server.nearby.provider;
 
+import static org.mockito.Mockito.atLeastOnce;
 import static org.mockito.Mockito.eq;
 import static org.mockito.Mockito.times;
 import static org.mockito.Mockito.verify;
@@ -24,12 +25,14 @@
 import android.bluetooth.BluetoothAdapter;
 import android.bluetooth.BluetoothManager;
 import android.bluetooth.le.AdvertiseSettings;
+import android.bluetooth.le.AdvertisingSetCallback;
 import android.content.Context;
+import android.hardware.location.ContextHubManager;
 import android.nearby.BroadcastCallback;
+import android.nearby.BroadcastRequest;
 
 import androidx.test.core.app.ApplicationProvider;
 
-import com.android.server.nearby.injector.ContextHubManagerAdapter;
 import com.android.server.nearby.injector.Injector;
 
 import com.google.common.util.concurrent.MoreExecutors;
@@ -59,9 +62,10 @@
     }
 
     @Test
-    public void testOnStatus_success() {
+    public void testOnStatus_success_fastAdv() {
         byte[] advertiseBytes = new byte[]{1, 2, 3, 4};
-        mBleBroadcastProvider.start(advertiseBytes, mBroadcastListener);
+        mBleBroadcastProvider.start(BroadcastRequest.PRESENCE_VERSION_V0,
+                advertiseBytes, mBroadcastListener);
 
         AdvertiseSettings settings = new AdvertiseSettings.Builder().build();
         mBleBroadcastProvider.onStartSuccess(settings);
@@ -69,15 +73,47 @@
     }
 
     @Test
-    public void testOnStatus_failure() {
+    public void testOnStatus_success_extendedAdv() {
         byte[] advertiseBytes = new byte[]{1, 2, 3, 4};
-        mBleBroadcastProvider.start(advertiseBytes, mBroadcastListener);
+        mBleBroadcastProvider.start(BroadcastRequest.PRESENCE_VERSION_V1,
+                advertiseBytes, mBroadcastListener);
+
+        // advertising set can not be mocked, so we will allow nulls
+        mBleBroadcastProvider.mAdvertisingSetCallback.onAdvertisingSetStarted(null, -30,
+                AdvertisingSetCallback.ADVERTISE_SUCCESS);
+        verify(mBroadcastListener).onStatusChanged(eq(BroadcastCallback.STATUS_OK));
+    }
+
+    @Test
+    public void testOnStatus_failure_fastAdv() {
+        byte[] advertiseBytes = new byte[]{1, 2, 3, 4};
+        mBleBroadcastProvider.start(BroadcastRequest.PRESENCE_VERSION_V0,
+                advertiseBytes, mBroadcastListener);
 
         mBleBroadcastProvider.onStartFailure(BroadcastCallback.STATUS_FAILURE);
         verify(mBroadcastListener, times(1))
                 .onStatusChanged(eq(BroadcastCallback.STATUS_FAILURE));
     }
 
+    @Test
+    public void testOnStatus_failure_extendedAdv() {
+        byte[] advertiseBytes = new byte[]{1, 2, 3, 4};
+        mBleBroadcastProvider.start(BroadcastRequest.PRESENCE_VERSION_V1,
+                advertiseBytes, mBroadcastListener);
+
+        // advertising set can not be mocked, so we will allow nulls
+        mBleBroadcastProvider.mAdvertisingSetCallback.onAdvertisingSetStarted(null, -30,
+                AdvertisingSetCallback.ADVERTISE_FAILED_INTERNAL_ERROR);
+        // Can be additional failure if the test device does not support LE Extended Advertising.
+        verify(mBroadcastListener, atLeastOnce())
+                .onStatusChanged(eq(BroadcastCallback.STATUS_FAILURE));
+    }
+
+    @Test
+    public void testStop() {
+        mBleBroadcastProvider.stop();
+    }
+
     private static class TestInjector implements Injector {
 
         @Override
@@ -88,7 +124,7 @@
         }
 
         @Override
-        public ContextHubManagerAdapter getContextHubManagerAdapter() {
+        public ContextHubManager getContextHubManager() {
             return null;
         }
 
diff --git a/nearby/tests/unit/src/com/android/server/nearby/provider/BleDiscoveryProviderTest.java b/nearby/tests/unit/src/com/android/server/nearby/provider/BleDiscoveryProviderTest.java
index 902cc33..ebb897e 100644
--- a/nearby/tests/unit/src/com/android/server/nearby/provider/BleDiscoveryProviderTest.java
+++ b/nearby/tests/unit/src/com/android/server/nearby/provider/BleDiscoveryProviderTest.java
@@ -18,6 +18,8 @@
 
 import static android.bluetooth.le.ScanSettings.CALLBACK_TYPE_ALL_MATCHES;
 
+import static com.google.common.truth.Truth.assertThat;
+
 import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.Mockito.times;
 import static org.mockito.Mockito.verify;
@@ -30,10 +32,13 @@
 import android.bluetooth.le.ScanRecord;
 import android.bluetooth.le.ScanResult;
 import android.content.Context;
+import android.hardware.location.ContextHubManager;
+import android.nearby.PresenceScanFilter;
+import android.nearby.PublicCredential;
+import android.nearby.ScanFilter;
 
 import androidx.test.platform.app.InstrumentationRegistry;
 
-import com.android.server.nearby.injector.ContextHubManagerAdapter;
 import com.android.server.nearby.injector.Injector;
 
 import org.junit.Before;
@@ -42,6 +47,8 @@
 
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
+import java.util.ArrayList;
+import java.util.List;
 
 public final class BleDiscoveryProviderTest {
 
@@ -70,6 +77,7 @@
         // Wait for callback to be invoked
         Thread.sleep(500);
         verify(mListener, times(1)).onNearbyDeviceDiscovered(any());
+        mBleDiscoveryProvider.getScanCallback().onScanFailed(1);
     }
 
     @Test
@@ -78,6 +86,22 @@
         mBleDiscoveryProvider.onStop();
     }
 
+    @Test
+    public void test_stopScan_filersReset() {
+        List<ScanFilter> filterList = new ArrayList<>();
+        filterList.add(getSanFilter());
+
+        mBleDiscoveryProvider.getController().setProviderScanFilters(filterList);
+        mBleDiscoveryProvider.onStart();
+        mBleDiscoveryProvider.onStop();
+        assertThat(mBleDiscoveryProvider.getFiltersLocked()).isNull();
+    }
+
+    @Test
+    public void testInvalidateScanMode() {
+        mBleDiscoveryProvider.invalidateScanMode();
+    }
+
     private class TestInjector implements Injector {
         @Override
         public BluetoothAdapter getBluetoothAdapter() {
@@ -85,7 +109,7 @@
         }
 
         @Override
-        public ContextHubManagerAdapter getContextHubManagerAdapter() {
+        public ContextHubManager getContextHubManager() {
             return null;
         }
 
@@ -125,4 +149,22 @@
             return null;
         }
     }
+
+    private static PresenceScanFilter getSanFilter() {
+        return new PresenceScanFilter.Builder()
+                .setMaxPathLoss(70)
+                .addCredential(getPublicCredential())
+                .addPresenceAction(124)
+                .build();
+    }
+
+    private static PublicCredential getPublicCredential() {
+        return new PublicCredential.Builder(
+                new byte[]{1, 2},
+                new byte[]{1, 2},
+                new byte[]{1, 2},
+                new byte[]{1, 2},
+                new byte[]{1, 2})
+                .build();
+    }
 }
diff --git a/nearby/tests/unit/src/com/android/server/nearby/provider/BroadcastProviderManagerTest.java b/nearby/tests/unit/src/com/android/server/nearby/provider/BroadcastProviderManagerTest.java
index d45d570..0179901 100644
--- a/nearby/tests/unit/src/com/android/server/nearby/provider/BroadcastProviderManagerTest.java
+++ b/nearby/tests/unit/src/com/android/server/nearby/provider/BroadcastProviderManagerTest.java
@@ -101,8 +101,13 @@
     @Test
     public void testStartAdvertising() {
         mBroadcastProviderManager.startBroadcast(mBroadcastRequest, mBroadcastListener);
-        verify(mBleBroadcastProvider).start(any(byte[].class), any(
-                BleBroadcastProvider.BroadcastListener.class));
+        verify(mBleBroadcastProvider).start(eq(BroadcastRequest.PRESENCE_VERSION_V0),
+                any(byte[].class), any(BleBroadcastProvider.BroadcastListener.class));
+    }
+
+    @Test
+    public void testStopAdvertising() {
+        mBroadcastProviderManager.stopBroadcast(mBroadcastListener);
     }
 
     @Test
diff --git a/nearby/tests/unit/src/com/android/server/nearby/provider/ChreCommunicationTest.java b/nearby/tests/unit/src/com/android/server/nearby/provider/ChreCommunicationTest.java
index 1b29b52..58b8584 100644
--- a/nearby/tests/unit/src/com/android/server/nearby/provider/ChreCommunicationTest.java
+++ b/nearby/tests/unit/src/com/android/server/nearby/provider/ChreCommunicationTest.java
@@ -16,18 +16,30 @@
 
 package com.android.server.nearby.provider;
 
+import static android.Manifest.permission.READ_DEVICE_CONFIG;
+import static android.Manifest.permission.WRITE_DEVICE_CONFIG;
+import static android.provider.DeviceConfig.NAMESPACE_TETHERING;
+
+import static com.android.server.nearby.NearbyConfiguration.NEARBY_MAINLINE_NANO_APP_MIN_VERSION;
+
+import static com.google.common.truth.Truth.assertThat;
+
 import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.ArgumentMatchers.eq;
 import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.when;
 
+import android.content.Context;
 import android.hardware.location.ContextHubClient;
 import android.hardware.location.ContextHubInfo;
+import android.hardware.location.ContextHubManager;
 import android.hardware.location.ContextHubTransaction;
 import android.hardware.location.NanoAppMessage;
 import android.hardware.location.NanoAppState;
+import android.provider.DeviceConfig;
 
-import com.android.server.nearby.injector.ContextHubManagerAdapter;
+import androidx.test.platform.app.InstrumentationRegistry;
+
 import com.android.server.nearby.injector.Injector;
 
 import org.junit.Before;
@@ -43,7 +55,8 @@
 
 public class ChreCommunicationTest {
     @Mock Injector mInjector;
-    @Mock ContextHubManagerAdapter mManager;
+    @Mock Context mContext;
+    @Mock ContextHubManager mManager;
     @Mock ContextHubTransaction<List<NanoAppState>> mTransaction;
     @Mock ContextHubTransaction.Response<List<NanoAppState>> mTransactionResponse;
     @Mock ContextHubClient mClient;
@@ -56,38 +69,63 @@
 
     @Before
     public void setUp() {
+        InstrumentationRegistry.getInstrumentation().getUiAutomation()
+                .adoptShellPermissionIdentity(WRITE_DEVICE_CONFIG, READ_DEVICE_CONFIG);
+        DeviceConfig.setProperty(NAMESPACE_TETHERING, NEARBY_MAINLINE_NANO_APP_MIN_VERSION,
+                "1", false);
+
         MockitoAnnotations.initMocks(this);
-        when(mInjector.getContextHubManagerAdapter()).thenReturn(mManager);
+        when(mInjector.getContextHubManager()).thenReturn(mManager);
         when(mManager.getContextHubs()).thenReturn(Collections.singletonList(new ContextHubInfo()));
         when(mManager.queryNanoApps(any())).thenReturn(mTransaction);
-        when(mManager.createClient(any(), any(), any())).thenReturn(mClient);
+        when(mManager.createClient(any(), any(), any(), any())).thenReturn(mClient);
         when(mTransactionResponse.getResult()).thenReturn(ContextHubTransaction.RESULT_SUCCESS);
         when(mTransactionResponse.getContents())
                 .thenReturn(
                         Collections.singletonList(
                                 new NanoAppState(ChreDiscoveryProvider.NANOAPP_ID, 1, true)));
 
-        mChreCommunication = new ChreCommunication(mInjector, new InlineExecutor());
+        mChreCommunication = new ChreCommunication(mInjector, mContext, new InlineExecutor());
+    }
+
+    @Test
+    public void testStart() {
         mChreCommunication.start(
                 mChreCallback, Collections.singleton(ChreDiscoveryProvider.NANOAPP_ID));
 
         verify(mTransaction).setOnCompleteListener(mOnQueryCompleteListenerCaptor.capture(), any());
         mOnQueryCompleteListenerCaptor.getValue().onComplete(mTransaction, mTransactionResponse);
-    }
-
-    @Test
-    public void testStart() {
         verify(mChreCallback).started(true);
     }
 
     @Test
     public void testStop() {
+        mChreCommunication.start(
+                mChreCallback, Collections.singleton(ChreDiscoveryProvider.NANOAPP_ID));
+
+        verify(mTransaction).setOnCompleteListener(mOnQueryCompleteListenerCaptor.capture(), any());
+        mOnQueryCompleteListenerCaptor.getValue().onComplete(mTransaction, mTransactionResponse);
         mChreCommunication.stop();
         verify(mClient).close();
     }
 
     @Test
+    public void testNotReachMinVersion() {
+        DeviceConfig.setProperty(NAMESPACE_TETHERING, NEARBY_MAINLINE_NANO_APP_MIN_VERSION,
+                "3", false);
+        mChreCommunication.start(
+                mChreCallback, Collections.singleton(ChreDiscoveryProvider.NANOAPP_ID));
+        verify(mTransaction).setOnCompleteListener(mOnQueryCompleteListenerCaptor.capture(), any());
+        mOnQueryCompleteListenerCaptor.getValue().onComplete(mTransaction, mTransactionResponse);
+        verify(mChreCallback).started(false);
+    }
+
+    @Test
     public void testSendMessageToNanApp() {
+        mChreCommunication.start(
+                mChreCallback, Collections.singleton(ChreDiscoveryProvider.NANOAPP_ID));
+        verify(mTransaction).setOnCompleteListener(mOnQueryCompleteListenerCaptor.capture(), any());
+        mOnQueryCompleteListenerCaptor.getValue().onComplete(mTransaction, mTransactionResponse);
         NanoAppMessage message =
                 NanoAppMessage.createMessageToNanoApp(
                         ChreDiscoveryProvider.NANOAPP_ID,
@@ -99,6 +137,8 @@
 
     @Test
     public void testOnMessageFromNanoApp() {
+        mChreCommunication.start(
+                mChreCallback, Collections.singleton(ChreDiscoveryProvider.NANOAPP_ID));
         NanoAppMessage message =
                 NanoAppMessage.createMessageToNanoApp(
                         ChreDiscoveryProvider.NANOAPP_ID,
@@ -109,13 +149,60 @@
     }
 
     @Test
+    public void testContextHubTransactionResultToString() {
+        assertThat(
+                mChreCommunication.contextHubTransactionResultToString(
+                        ContextHubTransaction.RESULT_SUCCESS))
+                .isEqualTo("RESULT_SUCCESS");
+        assertThat(
+                mChreCommunication.contextHubTransactionResultToString(
+                        ContextHubTransaction.RESULT_FAILED_UNKNOWN))
+                .isEqualTo("RESULT_FAILED_UNKNOWN");
+        assertThat(
+                mChreCommunication.contextHubTransactionResultToString(
+                        ContextHubTransaction.RESULT_FAILED_BAD_PARAMS))
+                .isEqualTo("RESULT_FAILED_BAD_PARAMS");
+        assertThat(
+                mChreCommunication.contextHubTransactionResultToString(
+                        ContextHubTransaction.RESULT_FAILED_UNINITIALIZED))
+                .isEqualTo("RESULT_FAILED_UNINITIALIZED");
+        assertThat(
+                mChreCommunication.contextHubTransactionResultToString(
+                        ContextHubTransaction.RESULT_FAILED_BUSY))
+                .isEqualTo("RESULT_FAILED_BUSY");
+        assertThat(
+                mChreCommunication.contextHubTransactionResultToString(
+                        ContextHubTransaction.RESULT_FAILED_AT_HUB))
+                .isEqualTo("RESULT_FAILED_AT_HUB");
+        assertThat(
+                mChreCommunication.contextHubTransactionResultToString(
+                        ContextHubTransaction.RESULT_FAILED_TIMEOUT))
+                .isEqualTo("RESULT_FAILED_TIMEOUT");
+        assertThat(
+                mChreCommunication.contextHubTransactionResultToString(
+                        ContextHubTransaction.RESULT_FAILED_SERVICE_INTERNAL_FAILURE))
+                .isEqualTo("RESULT_FAILED_SERVICE_INTERNAL_FAILURE");
+        assertThat(
+                mChreCommunication.contextHubTransactionResultToString(
+                        ContextHubTransaction.RESULT_FAILED_HAL_UNAVAILABLE))
+                .isEqualTo("RESULT_FAILED_HAL_UNAVAILABLE");
+        assertThat(
+                mChreCommunication.contextHubTransactionResultToString(9))
+                .isEqualTo("UNKNOWN_RESULT value=9");
+    }
+
+    @Test
     public void testOnHubReset() {
+        mChreCommunication.start(
+                mChreCallback, Collections.singleton(ChreDiscoveryProvider.NANOAPP_ID));
         mChreCommunication.onHubReset(mClient);
         verify(mChreCallback).onHubReset();
     }
 
     @Test
     public void testOnNanoAppLoaded() {
+        mChreCommunication.start(
+                mChreCallback, Collections.singleton(ChreDiscoveryProvider.NANOAPP_ID));
         mChreCommunication.onNanoAppLoaded(mClient, ChreDiscoveryProvider.NANOAPP_ID);
         verify(mChreCallback).onNanoAppRestart(eq(ChreDiscoveryProvider.NANOAPP_ID));
     }
diff --git a/nearby/tests/unit/src/com/android/server/nearby/provider/ChreDiscoveryProviderTest.java b/nearby/tests/unit/src/com/android/server/nearby/provider/ChreDiscoveryProviderTest.java
index 7c0dd92..270de52 100644
--- a/nearby/tests/unit/src/com/android/server/nearby/provider/ChreDiscoveryProviderTest.java
+++ b/nearby/tests/unit/src/com/android/server/nearby/provider/ChreDiscoveryProviderTest.java
@@ -16,16 +16,21 @@
 
 package com.android.server.nearby.provider;
 
+import static com.google.common.truth.Truth.assertThat;
+
 import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.Mockito.verify;
 
 import android.content.Context;
 import android.hardware.location.NanoAppMessage;
-import android.nearby.ScanFilter;
+import android.nearby.DataElement;
+import android.nearby.NearbyDeviceParcelable;
 
 import androidx.test.filters.SdkSuppress;
 import androidx.test.platform.app.InstrumentationRegistry;
 
+import com.android.server.nearby.presence.PresenceDiscoveryResult;
+
 import com.google.protobuf.ByteString;
 
 import org.junit.Before;
@@ -35,17 +40,25 @@
 import org.mockito.Mock;
 import org.mockito.MockitoAnnotations;
 
-import service.proto.Blefilter;
-
 import java.util.ArrayList;
 import java.util.List;
 import java.util.concurrent.Executor;
 
+import service.proto.Blefilter;
+
 public class ChreDiscoveryProviderTest {
     @Mock AbstractDiscoveryProvider.Listener mListener;
     @Mock ChreCommunication mChreCommunication;
 
     @Captor ArgumentCaptor<ChreCommunication.ContextHubCommsCallback> mChreCallbackCaptor;
+    @Captor ArgumentCaptor<NearbyDeviceParcelable> mNearbyDevice;
+
+    private static final int DATA_TYPE_CONNECTION_STATUS_KEY = 10;
+    private static final int DATA_TYPE_BATTERY_KEY = 11;
+    private static final int DATA_TYPE_TX_POWER_KEY = 5;
+    private static final int DATA_TYPE_BLUETOOTH_ADDR_KEY = 101;
+    private static final int DATA_TYPE_FP_ACCOUNT_KEY = 9;
+    private static final int DATA_TYPE_BLE_SERVICE_DATA_KEY = 100;
 
     private ChreDiscoveryProvider mChreDiscoveryProvider;
 
@@ -59,13 +72,10 @@
 
     @Test
     @SdkSuppress(minSdkVersion = 32, codeName = "T")
-    public void testOnStart() {
-        List<ScanFilter> scanFilters = new ArrayList<>();
-        mChreDiscoveryProvider.getController().setProviderScanFilters(scanFilters);
-        mChreDiscoveryProvider.onStart();
+    public void testInit() {
+        mChreDiscoveryProvider.init();
         verify(mChreCommunication).start(mChreCallbackCaptor.capture(), any());
         mChreCallbackCaptor.getValue().started(true);
-        verify(mChreCommunication).sendMessageToNanoApp(any());
     }
 
     @Test
@@ -93,12 +103,92 @@
                         ChreDiscoveryProvider.NANOAPP_MESSAGE_TYPE_FILTER_RESULT,
                         results.toByteArray());
         mChreDiscoveryProvider.getController().setListener(mListener);
+        mChreDiscoveryProvider.init();
         mChreDiscoveryProvider.onStart();
         verify(mChreCommunication).start(mChreCallbackCaptor.capture(), any());
         mChreCallbackCaptor.getValue().onMessageFromNanoApp(chre_message);
         verify(mListener).onNearbyDeviceDiscovered(any());
     }
 
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testOnNearbyDeviceDiscoveredWithDataElements() {
+        final byte [] connectionStatus = new byte[] {1, 2, 3};
+        final byte [] batteryStatus = new byte[] {4, 5, 6};
+        final byte [] txPower = new byte[] {2};
+        final byte [] bluetoothAddr = new byte[] {1, 2, 3, 4, 5, 6};
+        final byte [] fastPairAccountKey = new byte[16];
+        // First byte is length of service data, padding zeros should be thrown away.
+        final byte [] bleServiceData = new byte[] {5, 1, 2, 3, 4, 5, 0, 0, 0, 0};
+
+        final List<DataElement> expectedExtendedProperties = new ArrayList<>();
+        expectedExtendedProperties.add(new DataElement(DATA_TYPE_CONNECTION_STATUS_KEY,
+                connectionStatus));
+        expectedExtendedProperties.add(new DataElement(DATA_TYPE_BATTERY_KEY, batteryStatus));
+        expectedExtendedProperties.add(new DataElement(DATA_TYPE_TX_POWER_KEY, txPower));
+        expectedExtendedProperties.add(
+                new DataElement(DATA_TYPE_BLUETOOTH_ADDR_KEY, bluetoothAddr));
+        expectedExtendedProperties.add(
+                new DataElement(DATA_TYPE_FP_ACCOUNT_KEY, fastPairAccountKey));
+        expectedExtendedProperties.add(
+                new DataElement(DATA_TYPE_BLE_SERVICE_DATA_KEY, new byte[] {1, 2, 3, 4, 5}));
+
+        Blefilter.PublicCredential credential =
+                Blefilter.PublicCredential.newBuilder()
+                        .setSecretId(ByteString.copyFrom(new byte[] {1}))
+                        .setAuthenticityKey(ByteString.copyFrom(new byte[2]))
+                        .setPublicKey(ByteString.copyFrom(new byte[3]))
+                        .setEncryptedMetadata(ByteString.copyFrom(new byte[4]))
+                        .setEncryptedMetadataTag(ByteString.copyFrom(new byte[5]))
+                        .build();
+        Blefilter.BleFilterResult result =
+                Blefilter.BleFilterResult.newBuilder()
+                        .setTxPower(2)
+                        .setRssi(1)
+                        .setBluetoothAddress(ByteString.copyFrom(bluetoothAddr))
+                        .setBleServiceData(ByteString.copyFrom(bleServiceData))
+                        .setPublicCredential(credential)
+                        .addDataElement(Blefilter.DataElement.newBuilder()
+                                .setKey(
+                                        Blefilter.DataElement.ElementType
+                                                .DE_CONNECTION_STATUS)
+                                .setValue(ByteString.copyFrom(connectionStatus))
+                                .setValueLength(connectionStatus.length)
+                        )
+                        .addDataElement(Blefilter.DataElement.newBuilder()
+                                .setKey(
+                                        Blefilter.DataElement.ElementType
+                                                .DE_BATTERY_STATUS)
+                                .setValue(ByteString.copyFrom(batteryStatus))
+                                .setValueLength(batteryStatus.length)
+                        )
+                        .addDataElement(Blefilter.DataElement.newBuilder()
+                                .setKey(
+                                        Blefilter.DataElement.ElementType
+                                                .DE_FAST_PAIR_ACCOUNT_KEY)
+                                .setValue(ByteString.copyFrom(fastPairAccountKey))
+                                .setValueLength(fastPairAccountKey.length)
+                        )
+                        .build();
+        Blefilter.BleFilterResults results =
+                Blefilter.BleFilterResults.newBuilder().addResult(result).build();
+        NanoAppMessage chre_message =
+                NanoAppMessage.createMessageToNanoApp(
+                        ChreDiscoveryProvider.NANOAPP_ID,
+                        ChreDiscoveryProvider.NANOAPP_MESSAGE_TYPE_FILTER_RESULT,
+                        results.toByteArray());
+        mChreDiscoveryProvider.getController().setListener(mListener);
+        mChreDiscoveryProvider.init();
+        mChreDiscoveryProvider.onStart();
+        verify(mChreCommunication).start(mChreCallbackCaptor.capture(), any());
+        mChreCallbackCaptor.getValue().onMessageFromNanoApp(chre_message);
+        verify(mListener).onNearbyDeviceDiscovered(mNearbyDevice.capture());
+
+        List<DataElement> extendedProperties = PresenceDiscoveryResult
+                .fromDevice(mNearbyDevice.getValue()).getExtendedProperties();
+        assertThat(extendedProperties).containsExactlyElementsIn(expectedExtendedProperties);
+    }
+
     private static class InLineExecutor implements Executor {
         @Override
         public void execute(Runnable command) {
diff --git a/nearby/tests/unit/src/com/android/server/nearby/provider/DiscoveryProviderManagerTest.java b/nearby/tests/unit/src/com/android/server/nearby/provider/DiscoveryProviderManagerTest.java
new file mode 100644
index 0000000..91a0b56
--- /dev/null
+++ b/nearby/tests/unit/src/com/android/server/nearby/provider/DiscoveryProviderManagerTest.java
@@ -0,0 +1,352 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.nearby.provider;
+
+import static android.nearby.PresenceCredential.IDENTITY_TYPE_PRIVATE;
+import static android.nearby.ScanRequest.SCAN_TYPE_NEARBY_PRESENCE;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.Mockito.atLeastOnce;
+import static org.mockito.Mockito.never;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import android.app.AppOpsManager;
+import android.content.Context;
+import android.nearby.DataElement;
+import android.nearby.IScanListener;
+import android.nearby.NearbyDeviceParcelable;
+import android.nearby.PresenceScanFilter;
+import android.nearby.PublicCredential;
+import android.nearby.ScanRequest;
+import android.os.IBinder;
+
+import com.android.server.nearby.injector.Injector;
+import com.android.server.nearby.util.identity.CallerIdentity;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+
+public class DiscoveryProviderManagerTest {
+    private static final int SCAN_MODE_CHRE_ONLY = 3;
+    private static final int DATA_TYPE_SCAN_MODE = 102;
+    private static final int UID = 1234;
+    private static final int PID = 5678;
+    private static final String PACKAGE_NAME = "android.nearby.test";
+
+    @Mock Injector mInjector;
+    @Mock Context mContext;
+    @Mock AppOpsManager mAppOpsManager;
+    @Mock BleDiscoveryProvider mBleDiscoveryProvider;
+    @Mock ChreDiscoveryProvider mChreDiscoveryProvider;
+    @Mock DiscoveryProviderController mBluetoothController;
+    @Mock DiscoveryProviderController mChreController;
+    @Mock IScanListener mScanListener;
+    @Mock CallerIdentity mCallerIdentity;
+    @Mock DiscoveryProviderManager.ScanListenerDeathRecipient mScanListenerDeathRecipient;
+    @Mock IBinder mIBinder;
+
+    private DiscoveryProviderManager mDiscoveryProviderManager;
+    private Map<IBinder, DiscoveryProviderManager.ScanListenerRecord>
+            mScanTypeScanListenerRecordMap;
+
+    private static final int RSSI = -60;
+
+    @Before
+    public void setup() {
+        MockitoAnnotations.initMocks(this);
+        when(mInjector.getAppOpsManager()).thenReturn(mAppOpsManager);
+        when(mBleDiscoveryProvider.getController()).thenReturn(mBluetoothController);
+        when(mChreDiscoveryProvider.getController()).thenReturn(mChreController);
+
+        mScanTypeScanListenerRecordMap = new HashMap<>();
+        mDiscoveryProviderManager =
+                new DiscoveryProviderManager(mContext, mInjector, mBleDiscoveryProvider,
+                        mChreDiscoveryProvider,
+                        mScanTypeScanListenerRecordMap);
+        mCallerIdentity = CallerIdentity
+                .forTest(UID, PID, PACKAGE_NAME, /* attributionTag= */ null);
+    }
+
+    @Test
+    public void testOnNearbyDeviceDiscovered() {
+        NearbyDeviceParcelable nearbyDeviceParcelable = new NearbyDeviceParcelable.Builder()
+                .setScanType(SCAN_TYPE_NEARBY_PRESENCE)
+                .build();
+        mDiscoveryProviderManager.onNearbyDeviceDiscovered(nearbyDeviceParcelable);
+    }
+
+    @Test
+    public void testInvalidateProviderScanMode() {
+        mDiscoveryProviderManager.invalidateProviderScanMode();
+    }
+
+    @Test
+    public void testStartProviders_chreOnlyChreAvailable_bleProviderNotStarted() {
+        when(mChreDiscoveryProvider.available()).thenReturn(true);
+
+        ScanRequest scanRequest = new ScanRequest.Builder()
+                .setScanType(SCAN_TYPE_NEARBY_PRESENCE)
+                .addScanFilter(getChreOnlyPresenceScanFilter()).build();
+        DiscoveryProviderManager.ScanListenerRecord record =
+                new DiscoveryProviderManager.ScanListenerRecord(scanRequest, mScanListener,
+                        mCallerIdentity, mScanListenerDeathRecipient);
+        mScanTypeScanListenerRecordMap.put(mIBinder, record);
+
+        Boolean start = mDiscoveryProviderManager.startProviders(scanRequest);
+        verify(mBluetoothController, never()).start();
+        assertThat(start).isTrue();
+    }
+
+    @Test
+    public void testStartProviders_chreOnlyChreAvailable_multipleFilters_bleProviderNotStarted() {
+        when(mChreDiscoveryProvider.available()).thenReturn(true);
+
+        ScanRequest scanRequest = new ScanRequest.Builder()
+                .setScanType(SCAN_TYPE_NEARBY_PRESENCE)
+                .addScanFilter(getChreOnlyPresenceScanFilter())
+                .addScanFilter(getPresenceScanFilter()).build();
+        DiscoveryProviderManager.ScanListenerRecord record =
+                new DiscoveryProviderManager.ScanListenerRecord(scanRequest, mScanListener,
+                        mCallerIdentity, mScanListenerDeathRecipient);
+        mScanTypeScanListenerRecordMap.put(mIBinder, record);
+
+        Boolean start = mDiscoveryProviderManager.startProviders(scanRequest);
+        verify(mBluetoothController, never()).start();
+        assertThat(start).isTrue();
+    }
+
+    @Test
+    public void testStartProviders_chreOnlyChreUnavailable_bleProviderNotStarted() {
+        when(mChreDiscoveryProvider.available()).thenReturn(false);
+
+        ScanRequest scanRequest = new ScanRequest.Builder()
+                .setScanType(SCAN_TYPE_NEARBY_PRESENCE)
+                .addScanFilter(getChreOnlyPresenceScanFilter()).build();
+        DiscoveryProviderManager.ScanListenerRecord record =
+                new DiscoveryProviderManager.ScanListenerRecord(scanRequest, mScanListener,
+                        mCallerIdentity, mScanListenerDeathRecipient);
+        mScanTypeScanListenerRecordMap.put(mIBinder, record);
+
+        Boolean start = mDiscoveryProviderManager.startProviders(scanRequest);
+        verify(mBluetoothController, never()).start();
+        assertThat(start).isFalse();
+    }
+
+    @Test
+    public void testStartProviders_notChreOnlyChreAvailable_bleProviderNotStarted() {
+        when(mChreDiscoveryProvider.available()).thenReturn(true);
+
+        ScanRequest scanRequest = new ScanRequest.Builder()
+                .setScanType(SCAN_TYPE_NEARBY_PRESENCE)
+                .addScanFilter(getPresenceScanFilter()).build();
+        DiscoveryProviderManager.ScanListenerRecord record =
+                new DiscoveryProviderManager.ScanListenerRecord(scanRequest, mScanListener,
+                        mCallerIdentity, mScanListenerDeathRecipient);
+        mScanTypeScanListenerRecordMap.put(mIBinder, record);
+
+        Boolean start = mDiscoveryProviderManager.startProviders(scanRequest);
+        verify(mBluetoothController, never()).start();
+        assertThat(start).isTrue();
+    }
+
+    @Test
+    public void testStartProviders_notChreOnlyChreUnavailable_bleProviderStarted() {
+        when(mChreDiscoveryProvider.available()).thenReturn(false);
+
+        ScanRequest scanRequest = new ScanRequest.Builder()
+                .setScanType(SCAN_TYPE_NEARBY_PRESENCE)
+                .addScanFilter(getPresenceScanFilter()).build();
+        DiscoveryProviderManager.ScanListenerRecord record =
+                new DiscoveryProviderManager.ScanListenerRecord(scanRequest, mScanListener,
+                        mCallerIdentity, mScanListenerDeathRecipient);
+        mScanTypeScanListenerRecordMap.put(mIBinder, record);
+
+        Boolean start = mDiscoveryProviderManager.startProviders(scanRequest);
+        verify(mBluetoothController, atLeastOnce()).start();
+        assertThat(start).isTrue();
+    }
+
+    @Test
+    public void testStartProviders_chreOnlyChreUndetermined_bleProviderNotStarted() {
+        when(mChreDiscoveryProvider.available()).thenReturn(null);
+
+        ScanRequest scanRequest = new ScanRequest.Builder()
+                .setScanType(SCAN_TYPE_NEARBY_PRESENCE)
+                .addScanFilter(getChreOnlyPresenceScanFilter()).build();
+        DiscoveryProviderManager.ScanListenerRecord record =
+                new DiscoveryProviderManager.ScanListenerRecord(scanRequest, mScanListener,
+                        mCallerIdentity, mScanListenerDeathRecipient);
+        mScanTypeScanListenerRecordMap.put(mIBinder, record);
+
+        Boolean start = mDiscoveryProviderManager.startProviders(scanRequest);
+        verify(mBluetoothController, never()).start();
+        assertThat(start).isNull();
+    }
+
+    @Test
+    public void testStartProviders_notChreOnlyChreUndetermined_bleProviderStarted() {
+        when(mChreDiscoveryProvider.available()).thenReturn(null);
+
+        ScanRequest scanRequest = new ScanRequest.Builder()
+                .setScanType(SCAN_TYPE_NEARBY_PRESENCE)
+                .addScanFilter(getPresenceScanFilter()).build();
+        DiscoveryProviderManager.ScanListenerRecord record =
+                new DiscoveryProviderManager.ScanListenerRecord(scanRequest, mScanListener,
+                        mCallerIdentity, mScanListenerDeathRecipient);
+        mScanTypeScanListenerRecordMap.put(mIBinder, record);
+
+        Boolean start = mDiscoveryProviderManager.startProviders(scanRequest);
+        verify(mBluetoothController, atLeastOnce()).start();
+        assertThat(start).isTrue();
+    }
+
+    @Test
+    public void test_stopChreProvider_clearFilters() throws Exception {
+        // Cannot use mocked ChreDiscoveryProvider,
+        // so we cannot use class variable mDiscoveryProviderManager
+        ExecutorService executor = Executors.newSingleThreadExecutor();
+        DiscoveryProviderManager manager =
+                new DiscoveryProviderManager(mContext, mInjector, mBleDiscoveryProvider,
+                        new ChreDiscoveryProvider(
+                                mContext,
+                                new ChreCommunication(mInjector, mContext, executor), executor),
+                mScanTypeScanListenerRecordMap);
+        ScanRequest scanRequest = new ScanRequest.Builder()
+                .setScanType(SCAN_TYPE_NEARBY_PRESENCE)
+                .addScanFilter(getPresenceScanFilter()).build();
+        DiscoveryProviderManager.ScanListenerRecord record =
+                new DiscoveryProviderManager.ScanListenerRecord(scanRequest, mScanListener,
+                        mCallerIdentity, mScanListenerDeathRecipient);
+        mScanTypeScanListenerRecordMap.put(mIBinder, record);
+        manager.startChreProvider(List.of(getPresenceScanFilter()));
+        // This is an asynchronized process. The filters will be set in executor thread. So we need
+        // to wait for some time to get the correct result.
+        Thread.sleep(200);
+
+        assertThat(manager.mChreDiscoveryProvider.getController().isStarted())
+                .isTrue();
+        assertThat(manager.mChreDiscoveryProvider.getFiltersLocked()).isNotNull();
+
+        manager.stopChreProvider();
+        Thread.sleep(200);
+        // The filters should be cleared right after.
+        assertThat(manager.mChreDiscoveryProvider.getController().isStarted())
+                .isFalse();
+        assertThat(manager.mChreDiscoveryProvider.getFiltersLocked()).isNull();
+    }
+
+    @Test
+    public void test_restartChreProvider() throws Exception {
+        // Cannot use mocked ChreDiscoveryProvider,
+        // so we cannot use class variable mDiscoveryProviderManager
+        ExecutorService executor = Executors.newSingleThreadExecutor();
+        DiscoveryProviderManager manager =
+                new DiscoveryProviderManager(mContext, mInjector, mBleDiscoveryProvider,
+                        new ChreDiscoveryProvider(
+                                mContext,
+                                new ChreCommunication(mInjector, mContext, executor), executor),
+                        mScanTypeScanListenerRecordMap);
+        ScanRequest scanRequest = new ScanRequest.Builder()
+                .setScanType(SCAN_TYPE_NEARBY_PRESENCE)
+                .addScanFilter(getPresenceScanFilter()).build();
+        DiscoveryProviderManager.ScanListenerRecord record =
+                new DiscoveryProviderManager.ScanListenerRecord(scanRequest, mScanListener,
+                        mCallerIdentity, mScanListenerDeathRecipient);
+        mScanTypeScanListenerRecordMap.put(mIBinder, record);
+        manager.startChreProvider(List.of(getPresenceScanFilter()));
+        // This is an asynchronized process. The filters will be set in executor thread. So we need
+        // to wait for some time to get the correct result.
+        Thread.sleep(200);
+
+        assertThat(manager.mChreDiscoveryProvider.getController().isStarted())
+                .isTrue();
+        assertThat(manager.mChreDiscoveryProvider.getFiltersLocked()).isNotNull();
+
+        // We want to make sure quickly restart the provider the filters should
+        // be reset correctly.
+        // See b/255922206, there can be a race condition that filters get cleared because onStop()
+        // get executed after onStart() if they are called from different threads.
+        manager.stopChreProvider();
+        manager.mChreDiscoveryProvider.getController().setProviderScanFilters(
+                List.of(getPresenceScanFilter()));
+        manager.startChreProvider(List.of(getPresenceScanFilter()));
+        Thread.sleep(200);
+        assertThat(manager.mChreDiscoveryProvider.getController().isStarted())
+                .isTrue();
+        assertThat(manager.mChreDiscoveryProvider.getFiltersLocked()).isNotNull();
+
+        // Wait for enough time
+        Thread.sleep(1000);
+
+        assertThat(manager.mChreDiscoveryProvider.getController().isStarted())
+                .isTrue();
+        assertThat(manager.mChreDiscoveryProvider.getFiltersLocked()).isNotNull();
+    }
+
+    private static PresenceScanFilter getPresenceScanFilter() {
+        final byte[] secretId = new byte[]{1, 2, 3, 4};
+        final byte[] authenticityKey = new byte[]{0, 1, 1, 1};
+        final byte[] publicKey = new byte[]{1, 1, 2, 2};
+        final byte[] encryptedMetadata = new byte[]{1, 2, 3, 4, 5};
+        final byte[] metadataEncryptionKeyTag = new byte[]{1, 1, 3, 4, 5};
+
+        PublicCredential credential = new PublicCredential.Builder(
+                secretId, authenticityKey, publicKey, encryptedMetadata, metadataEncryptionKeyTag)
+                .setIdentityType(IDENTITY_TYPE_PRIVATE)
+                .build();
+
+        final int action = 123;
+        return new PresenceScanFilter.Builder()
+                .addCredential(credential)
+                .setMaxPathLoss(RSSI)
+                .addPresenceAction(action)
+                .build();
+    }
+
+    private static PresenceScanFilter getChreOnlyPresenceScanFilter() {
+        final byte[] secretId = new byte[]{1, 2, 3, 4};
+        final byte[] authenticityKey = new byte[]{0, 1, 1, 1};
+        final byte[] publicKey = new byte[]{1, 1, 2, 2};
+        final byte[] encryptedMetadata = new byte[]{1, 2, 3, 4, 5};
+        final byte[] metadataEncryptionKeyTag = new byte[]{1, 1, 3, 4, 5};
+
+        PublicCredential credential = new PublicCredential.Builder(
+                secretId, authenticityKey, publicKey, encryptedMetadata, metadataEncryptionKeyTag)
+                .setIdentityType(IDENTITY_TYPE_PRIVATE)
+                .build();
+
+        final int action = 123;
+        DataElement scanModeElement = new DataElement(DATA_TYPE_SCAN_MODE,
+                new byte[]{SCAN_MODE_CHRE_ONLY});
+        return new PresenceScanFilter.Builder()
+                .addCredential(credential)
+                .setMaxPathLoss(RSSI)
+                .addPresenceAction(action)
+                .addExtendedProperty(scanModeElement)
+                .build();
+    }
+}
diff --git a/nearby/tests/unit/src/com/android/server/nearby/provider/FastPairDataProviderTest.java b/nearby/tests/unit/src/com/android/server/nearby/provider/FastPairDataProviderTest.java
new file mode 100644
index 0000000..300efbd
--- /dev/null
+++ b/nearby/tests/unit/src/com/android/server/nearby/provider/FastPairDataProviderTest.java
@@ -0,0 +1,376 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.nearby.provider;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.junit.Assert.assertThrows;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.doNothing;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import android.accounts.Account;
+import android.content.Context;
+import android.nearby.FastPairDataProviderService;
+import android.nearby.aidl.FastPairAccountDevicesMetadataRequestParcel;
+import android.nearby.aidl.FastPairAntispoofKeyDeviceMetadataParcel;
+import android.nearby.aidl.FastPairAntispoofKeyDeviceMetadataRequestParcel;
+import android.nearby.aidl.FastPairDeviceMetadataParcel;
+import android.nearby.aidl.FastPairEligibleAccountParcel;
+import android.nearby.aidl.FastPairEligibleAccountsRequestParcel;
+import android.nearby.aidl.FastPairManageAccountDeviceRequestParcel;
+import android.nearby.aidl.FastPairManageAccountRequestParcel;
+
+import androidx.test.filters.SdkSuppress;
+import androidx.test.platform.app.InstrumentationRegistry;
+
+import com.android.server.nearby.fastpair.footprint.FastPairUploadInfo;
+
+import com.google.common.collect.ImmutableList;
+import com.google.protobuf.ByteString;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.mockito.ArgumentCaptor;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+
+import service.proto.Cache;
+import service.proto.FastPairString;
+import service.proto.Rpcs;
+
+public class FastPairDataProviderTest {
+
+    private static final Account ACCOUNT = new Account("abc@google.com", "type1");
+    private static final byte[] MODEL_ID = new byte[]{7, 9};
+    private static final int BLE_TX_POWER = 5;
+    private static final String CONNECT_SUCCESS_COMPANION_APP_INSTALLED =
+            "CONNECT_SUCCESS_COMPANION_APP_INSTALLED";
+    private static final String CONNECT_SUCCESS_COMPANION_APP_NOT_INSTALLED =
+            "CONNECT_SUCCESS_COMPANION_APP_NOT_INSTALLED";
+    private static final int DEVICE_TYPE = 1;
+    private static final String DOWNLOAD_COMPANION_APP_DESCRIPTION =
+            "DOWNLOAD_COMPANION_APP_DESCRIPTION";
+    private static final String FAIL_CONNECT_GOTO_SETTINGS_DESCRIPTION =
+            "FAIL_CONNECT_GOTO_SETTINGS_DESCRIPTION";
+    private static final byte[] IMAGE = new byte[]{7, 9};
+    private static final String IMAGE_URL = "IMAGE_URL";
+    private static final String INITIAL_NOTIFICATION_DESCRIPTION =
+            "INITIAL_NOTIFICATION_DESCRIPTION";
+    private static final String INITIAL_NOTIFICATION_DESCRIPTION_NO_ACCOUNT =
+            "INITIAL_NOTIFICATION_DESCRIPTION_NO_ACCOUNT";
+    private static final String INITIAL_PAIRING_DESCRIPTION = "INITIAL_PAIRING_DESCRIPTION";
+    private static final String INTENT_URI = "INTENT_URI";
+    private static final String OPEN_COMPANION_APP_DESCRIPTION = "OPEN_COMPANION_APP_DESCRIPTION";
+    private static final String RETRO_ACTIVE_PAIRING_DESCRIPTION =
+            "RETRO_ACTIVE_PAIRING_DESCRIPTION";
+    private static final String SUBSEQUENT_PAIRING_DESCRIPTION = "SUBSEQUENT_PAIRING_DESCRIPTION";
+    private static final float TRIGGER_DISTANCE = 111;
+    private static final String TRUE_WIRELESS_IMAGE_URL_CASE = "TRUE_WIRELESS_IMAGE_URL_CASE";
+    private static final String TRUE_WIRELESS_IMAGE_URL_LEFT_BUD =
+            "TRUE_WIRELESS_IMAGE_URL_LEFT_BUD";
+    private static final String TRUE_WIRELESS_IMAGE_URL_RIGHT_BUD =
+            "TRUE_WIRELESS_IMAGE_URL_RIGHT_BUD";
+    private static final String UNABLE_TO_CONNECT_DESCRIPTION = "UNABLE_TO_CONNECT_DESCRIPTION";
+    private static final String UNABLE_TO_CONNECT_TITLE = "UNABLE_TO_CONNECT_TITLE";
+    private static final String UPDATE_COMPANION_APP_DESCRIPTION =
+            "UPDATE_COMPANION_APP_DESCRIPTION";
+    private static final String WAIT_LAUNCH_COMPANION_APP_DESCRIPTION =
+            "WAIT_LAUNCH_COMPANION_APP_DESCRIPTION";
+    private static final byte[] ACCOUNT_KEY = new byte[]{3};
+    private static final byte[] SHA256_ACCOUNT_KEY_PUBLIC_ADDRESS = new byte[]{2, 8};
+    private static final byte[] ANTI_SPOOFING_KEY = new byte[]{4, 5, 6};
+    private static final String ACTION_URL = "ACTION_URL";
+    private static final String APP_NAME = "APP_NAME";
+    private static final byte[] AUTHENTICATION_PUBLIC_KEY_SEC_P256R1 = new byte[]{5, 7};
+    private static final String DESCRIPTION = "DESCRIPTION";
+    private static final String DEVICE_NAME = "DEVICE_NAME";
+    private static final String DISPLAY_URL = "DISPLAY_URL";
+    private static final long FIRST_OBSERVATION_TIMESTAMP_MILLIS = 8393L;
+    private static final String ICON_FIFE_URL = "ICON_FIFE_URL";
+    private static final byte[] ICON_PNG = new byte[]{2, 5};
+    private static final String ID = "ID";
+    private static final long LAST_OBSERVATION_TIMESTAMP_MILLIS = 934234L;
+    private static final String MAC_ADDRESS = "MAC_ADDRESS";
+    private static final String NAME = "NAME";
+    private static final String PACKAGE_NAME = "PACKAGE_NAME";
+    private static final long PENDING_APP_INSTALL_TIMESTAMP_MILLIS = 832393L;
+    private static final int RSSI = 9;
+    private static final String TITLE = "TITLE";
+    private static final String TRIGGER_ID = "TRIGGER_ID";
+    private static final int TX_POWER = 63;
+
+    @Mock ProxyFastPairDataProvider mProxyFastPairDataProvider;
+
+    FastPairDataProvider mFastPairDataProvider;
+    FastPairEligibleAccountParcel[] mFastPairEligibleAccountParcels =
+            { genHappyPathFastPairEligibleAccountParcel() };
+    FastPairAntispoofKeyDeviceMetadataParcel mFastPairAntispoofKeyDeviceMetadataParcel =
+            genHappyPathFastPairAntispoofKeyDeviceMetadataParcel();
+    FastPairUploadInfo mFastPairUploadInfo = genHappyPathFastPairUploadInfo();
+
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+        Context context = InstrumentationRegistry.getInstrumentation().getContext();
+        mFastPairDataProvider = FastPairDataProvider.init(context);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testFailurePath_throwsException() throws IllegalStateException {
+        mFastPairDataProvider = FastPairDataProvider.getInstance();
+        assertThrows(
+                IllegalStateException.class,
+                () -> {
+                    mFastPairDataProvider.loadFastPairEligibleAccounts(); });
+        assertThrows(
+                IllegalStateException.class,
+                () -> {
+                    mFastPairDataProvider.loadFastPairAntispoofKeyDeviceMetadata(MODEL_ID); });
+        assertThrows(
+                IllegalStateException.class,
+                () -> {
+                    mFastPairDataProvider.loadFastPairDeviceWithAccountKey(ACCOUNT); });
+        assertThrows(
+                IllegalStateException.class,
+                () -> {
+                    mFastPairDataProvider.loadFastPairDeviceWithAccountKey(
+                            ACCOUNT, ImmutableList.of()); });
+        assertThrows(
+                IllegalStateException.class,
+                () -> {
+                    mFastPairDataProvider.optIn(ACCOUNT); });
+        assertThrows(
+                IllegalStateException.class,
+                () -> {
+                    mFastPairDataProvider.upload(ACCOUNT, mFastPairUploadInfo); });
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testLoadFastPairAntispoofKeyDeviceMetadata_receivesResponse()  {
+        mFastPairDataProvider.setProxyDataProvider(mProxyFastPairDataProvider);
+        when(mProxyFastPairDataProvider.loadFastPairAntispoofKeyDeviceMetadata(any()))
+                .thenReturn(mFastPairAntispoofKeyDeviceMetadataParcel);
+
+        mFastPairDataProvider.loadFastPairAntispoofKeyDeviceMetadata(MODEL_ID);
+        ArgumentCaptor<FastPairAntispoofKeyDeviceMetadataRequestParcel> captor =
+                ArgumentCaptor.forClass(FastPairAntispoofKeyDeviceMetadataRequestParcel.class);
+        verify(mProxyFastPairDataProvider).loadFastPairAntispoofKeyDeviceMetadata(captor.capture());
+        assertThat(captor.getValue().modelId).isSameInstanceAs(MODEL_ID);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testOptIn_finishesSuccessfully()  {
+        mFastPairDataProvider.setProxyDataProvider(mProxyFastPairDataProvider);
+        doNothing().when(mProxyFastPairDataProvider).manageFastPairAccount(any());
+        mFastPairDataProvider.optIn(ACCOUNT);
+        ArgumentCaptor<FastPairManageAccountRequestParcel> captor =
+                ArgumentCaptor.forClass(FastPairManageAccountRequestParcel.class);
+        verify(mProxyFastPairDataProvider).manageFastPairAccount(captor.capture());
+        assertThat(captor.getValue().account).isSameInstanceAs(ACCOUNT);
+        assertThat(captor.getValue().requestType).isEqualTo(
+                FastPairDataProviderService.MANAGE_REQUEST_ADD);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testUpload_finishesSuccessfully()  {
+        mFastPairDataProvider.setProxyDataProvider(mProxyFastPairDataProvider);
+        doNothing().when(mProxyFastPairDataProvider).manageFastPairAccountDevice(any());
+        mFastPairDataProvider.upload(ACCOUNT, mFastPairUploadInfo);
+        ArgumentCaptor<FastPairManageAccountDeviceRequestParcel> captor =
+                ArgumentCaptor.forClass(FastPairManageAccountDeviceRequestParcel.class);
+        verify(mProxyFastPairDataProvider).manageFastPairAccountDevice(captor.capture());
+        assertThat(captor.getValue().account).isSameInstanceAs(ACCOUNT);
+        assertThat(captor.getValue().requestType).isEqualTo(
+                FastPairDataProviderService.MANAGE_REQUEST_ADD);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testLoadFastPairEligibleAccounts_receivesOneAccount()  {
+        mFastPairDataProvider.setProxyDataProvider(mProxyFastPairDataProvider);
+        when(mProxyFastPairDataProvider.loadFastPairEligibleAccounts(any()))
+                .thenReturn(mFastPairEligibleAccountParcels);
+        assertThat(mFastPairDataProvider.loadFastPairEligibleAccounts().size())
+                .isEqualTo(1);
+        ArgumentCaptor<FastPairEligibleAccountsRequestParcel> captor =
+                ArgumentCaptor.forClass(FastPairEligibleAccountsRequestParcel.class);
+        verify(mProxyFastPairDataProvider).loadFastPairEligibleAccounts(captor.capture());
+        assertThat(captor.getValue()).isNotNull();
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testLoadFastPairDeviceWithAccountKey_finishesSuccessfully()  {
+        mFastPairDataProvider.setProxyDataProvider(mProxyFastPairDataProvider);
+        when(mProxyFastPairDataProvider.loadFastPairAccountDevicesMetadata(any()))
+                .thenReturn(null);
+
+        mFastPairDataProvider.loadFastPairDeviceWithAccountKey(ACCOUNT);
+        ArgumentCaptor<FastPairAccountDevicesMetadataRequestParcel> captor =
+                ArgumentCaptor.forClass(FastPairAccountDevicesMetadataRequestParcel.class);
+        verify(mProxyFastPairDataProvider).loadFastPairAccountDevicesMetadata(captor.capture());
+        assertThat(captor.getValue().account).isSameInstanceAs(ACCOUNT);
+        assertThat(captor.getValue().deviceAccountKeys).isEmpty();
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testLoadFastPairDeviceWithAccountKeyDeviceAccountKeys_finishesSuccessfully()  {
+        mFastPairDataProvider.setProxyDataProvider(mProxyFastPairDataProvider);
+        when(mProxyFastPairDataProvider.loadFastPairAccountDevicesMetadata(any()))
+                .thenReturn(null);
+
+        mFastPairDataProvider.loadFastPairDeviceWithAccountKey(
+                ACCOUNT, ImmutableList.of(ACCOUNT_KEY));
+        ArgumentCaptor<FastPairAccountDevicesMetadataRequestParcel> captor =
+                ArgumentCaptor.forClass(FastPairAccountDevicesMetadataRequestParcel.class);
+        verify(mProxyFastPairDataProvider).loadFastPairAccountDevicesMetadata(captor.capture());
+        assertThat(captor.getValue().account).isSameInstanceAs(ACCOUNT);
+        assertThat(captor.getValue().deviceAccountKeys.length).isEqualTo(1);
+        assertThat(captor.getValue().deviceAccountKeys[0].byteArray).isSameInstanceAs(ACCOUNT_KEY);
+    }
+
+    private static FastPairEligibleAccountParcel genHappyPathFastPairEligibleAccountParcel() {
+        FastPairEligibleAccountParcel parcel = new FastPairEligibleAccountParcel();
+        parcel.account = ACCOUNT;
+        parcel.optIn = true;
+
+        return parcel;
+    }
+
+    private static FastPairAntispoofKeyDeviceMetadataParcel
+                genHappyPathFastPairAntispoofKeyDeviceMetadataParcel() {
+        FastPairAntispoofKeyDeviceMetadataParcel parcel =
+                new FastPairAntispoofKeyDeviceMetadataParcel();
+        parcel.antispoofPublicKey = ANTI_SPOOFING_KEY;
+        parcel.deviceMetadata = genHappyPathFastPairDeviceMetadataParcel();
+
+        return parcel;
+    }
+
+    private static FastPairDeviceMetadataParcel genHappyPathFastPairDeviceMetadataParcel() {
+        FastPairDeviceMetadataParcel parcel = new FastPairDeviceMetadataParcel();
+
+        parcel.bleTxPower = BLE_TX_POWER;
+        parcel.connectSuccessCompanionAppInstalled = CONNECT_SUCCESS_COMPANION_APP_INSTALLED;
+        parcel.connectSuccessCompanionAppNotInstalled =
+                CONNECT_SUCCESS_COMPANION_APP_NOT_INSTALLED;
+        parcel.deviceType = DEVICE_TYPE;
+        parcel.downloadCompanionAppDescription = DOWNLOAD_COMPANION_APP_DESCRIPTION;
+        parcel.failConnectGoToSettingsDescription = FAIL_CONNECT_GOTO_SETTINGS_DESCRIPTION;
+        parcel.image = IMAGE;
+        parcel.imageUrl = IMAGE_URL;
+        parcel.initialNotificationDescription = INITIAL_NOTIFICATION_DESCRIPTION;
+        parcel.initialNotificationDescriptionNoAccount =
+                INITIAL_NOTIFICATION_DESCRIPTION_NO_ACCOUNT;
+        parcel.initialPairingDescription = INITIAL_PAIRING_DESCRIPTION;
+        parcel.intentUri = INTENT_URI;
+        parcel.name = NAME;
+        parcel.openCompanionAppDescription = OPEN_COMPANION_APP_DESCRIPTION;
+        parcel.retroactivePairingDescription = RETRO_ACTIVE_PAIRING_DESCRIPTION;
+        parcel.subsequentPairingDescription = SUBSEQUENT_PAIRING_DESCRIPTION;
+        parcel.triggerDistance = TRIGGER_DISTANCE;
+        parcel.trueWirelessImageUrlCase = TRUE_WIRELESS_IMAGE_URL_CASE;
+        parcel.trueWirelessImageUrlLeftBud = TRUE_WIRELESS_IMAGE_URL_LEFT_BUD;
+        parcel.trueWirelessImageUrlRightBud = TRUE_WIRELESS_IMAGE_URL_RIGHT_BUD;
+        parcel.unableToConnectDescription = UNABLE_TO_CONNECT_DESCRIPTION;
+        parcel.unableToConnectTitle = UNABLE_TO_CONNECT_TITLE;
+        parcel.updateCompanionAppDescription = UPDATE_COMPANION_APP_DESCRIPTION;
+        parcel.waitLaunchCompanionAppDescription = WAIT_LAUNCH_COMPANION_APP_DESCRIPTION;
+
+        return parcel;
+    }
+
+    private static Cache.StoredDiscoveryItem genHappyPathStoredDiscoveryItem() {
+        Cache.StoredDiscoveryItem.Builder storedDiscoveryItemBuilder =
+                Cache.StoredDiscoveryItem.newBuilder();
+        storedDiscoveryItemBuilder.setActionUrl(ACTION_URL);
+        storedDiscoveryItemBuilder.setActionUrlType(Cache.ResolvedUrlType.WEBPAGE);
+        storedDiscoveryItemBuilder.setAppName(APP_NAME);
+        storedDiscoveryItemBuilder.setAuthenticationPublicKeySecp256R1(
+                ByteString.copyFrom(AUTHENTICATION_PUBLIC_KEY_SEC_P256R1));
+        storedDiscoveryItemBuilder.setDescription(DESCRIPTION);
+        storedDiscoveryItemBuilder.setDeviceName(DEVICE_NAME);
+        storedDiscoveryItemBuilder.setDisplayUrl(DISPLAY_URL);
+        storedDiscoveryItemBuilder.setFirstObservationTimestampMillis(
+                FIRST_OBSERVATION_TIMESTAMP_MILLIS);
+        storedDiscoveryItemBuilder.setIconFifeUrl(ICON_FIFE_URL);
+        storedDiscoveryItemBuilder.setIconPng(ByteString.copyFrom(ICON_PNG));
+        storedDiscoveryItemBuilder.setId(ID);
+        storedDiscoveryItemBuilder.setLastObservationTimestampMillis(
+                LAST_OBSERVATION_TIMESTAMP_MILLIS);
+        storedDiscoveryItemBuilder.setMacAddress(MAC_ADDRESS);
+        storedDiscoveryItemBuilder.setPackageName(PACKAGE_NAME);
+        storedDiscoveryItemBuilder.setPendingAppInstallTimestampMillis(
+                PENDING_APP_INSTALL_TIMESTAMP_MILLIS);
+        storedDiscoveryItemBuilder.setRssi(RSSI);
+        storedDiscoveryItemBuilder.setState(Cache.StoredDiscoveryItem.State.STATE_ENABLED);
+        storedDiscoveryItemBuilder.setTitle(TITLE);
+        storedDiscoveryItemBuilder.setTriggerId(TRIGGER_ID);
+        storedDiscoveryItemBuilder.setTxPower(TX_POWER);
+
+        FastPairString.FastPairStrings.Builder stringsBuilder =
+                FastPairString.FastPairStrings.newBuilder();
+        stringsBuilder.setPairingFinishedCompanionAppInstalled(
+                CONNECT_SUCCESS_COMPANION_APP_INSTALLED);
+        stringsBuilder.setPairingFinishedCompanionAppNotInstalled(
+                CONNECT_SUCCESS_COMPANION_APP_NOT_INSTALLED);
+        stringsBuilder.setPairingFailDescription(
+                FAIL_CONNECT_GOTO_SETTINGS_DESCRIPTION);
+        stringsBuilder.setTapToPairWithAccount(
+                INITIAL_NOTIFICATION_DESCRIPTION);
+        stringsBuilder.setTapToPairWithoutAccount(
+                INITIAL_NOTIFICATION_DESCRIPTION_NO_ACCOUNT);
+        stringsBuilder.setInitialPairingDescription(INITIAL_PAIRING_DESCRIPTION);
+        stringsBuilder.setRetroactivePairingDescription(RETRO_ACTIVE_PAIRING_DESCRIPTION);
+        stringsBuilder.setSubsequentPairingDescription(SUBSEQUENT_PAIRING_DESCRIPTION);
+        stringsBuilder.setWaitAppLaunchDescription(WAIT_LAUNCH_COMPANION_APP_DESCRIPTION);
+        storedDiscoveryItemBuilder.setFastPairStrings(stringsBuilder.build());
+
+        Cache.FastPairInformation.Builder fpInformationBuilder =
+                Cache.FastPairInformation.newBuilder();
+        Rpcs.TrueWirelessHeadsetImages.Builder imagesBuilder =
+                Rpcs.TrueWirelessHeadsetImages.newBuilder();
+        imagesBuilder.setCaseUrl(TRUE_WIRELESS_IMAGE_URL_CASE);
+        imagesBuilder.setLeftBudUrl(TRUE_WIRELESS_IMAGE_URL_LEFT_BUD);
+        imagesBuilder.setRightBudUrl(TRUE_WIRELESS_IMAGE_URL_RIGHT_BUD);
+        fpInformationBuilder.setTrueWirelessImages(imagesBuilder.build());
+        fpInformationBuilder.setDeviceType(Rpcs.DeviceType.HEADPHONES);
+
+        storedDiscoveryItemBuilder.setFastPairInformation(fpInformationBuilder.build());
+        storedDiscoveryItemBuilder.setTxPower(TX_POWER);
+
+        storedDiscoveryItemBuilder.setIconPng(ByteString.copyFrom(ICON_PNG));
+        storedDiscoveryItemBuilder.setIconFifeUrl(ICON_FIFE_URL);
+        storedDiscoveryItemBuilder.setActionUrl(ACTION_URL);
+
+        return storedDiscoveryItemBuilder.build();
+    }
+
+    private static FastPairUploadInfo genHappyPathFastPairUploadInfo() {
+        return new FastPairUploadInfo(
+                genHappyPathStoredDiscoveryItem(),
+                ByteString.copyFrom(ACCOUNT_KEY),
+                ByteString.copyFrom(SHA256_ACCOUNT_KEY_PUBLIC_ADDRESS));
+    }
+}
diff --git a/nearby/tests/unit/src/com/android/server/nearby/provider/UtilsTest.java b/nearby/tests/unit/src/com/android/server/nearby/provider/UtilsTest.java
index eeea319..35f87f1 100644
--- a/nearby/tests/unit/src/com/android/server/nearby/provider/UtilsTest.java
+++ b/nearby/tests/unit/src/com/android/server/nearby/provider/UtilsTest.java
@@ -110,8 +110,6 @@
     private static final byte[] ICON_PNG = new byte[]{2, 5};
     private static final String ID = "ID";
     private static final long LAST_OBSERVATION_TIMESTAMP_MILLIS = 934234L;
-    private static final int LAST_USER_EXPERIENCE = 1;
-    private static final long LOST_MILLIS = 393284L;
     private static final String MAC_ADDRESS = "MAC_ADDRESS";
     private static final String NAME = "NAME";
     private static final String PACKAGE_NAME = "PACKAGE_NAME";
@@ -121,7 +119,6 @@
     private static final String TITLE = "TITLE";
     private static final String TRIGGER_ID = "TRIGGER_ID";
     private static final int TX_POWER = 63;
-    private static final int TYPE = 1;
 
     @Test
     @SdkSuppress(minSdkVersion = 32, codeName = "T")
diff --git a/nearby/tests/unit/src/com/android/server/nearby/util/ArrayUtilsTest.java b/nearby/tests/unit/src/com/android/server/nearby/util/ArrayUtilsTest.java
new file mode 100644
index 0000000..0fe28df
--- /dev/null
+++ b/nearby/tests/unit/src/com/android/server/nearby/util/ArrayUtilsTest.java
@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.nearby.util;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import androidx.test.filters.SdkSuppress;
+
+import org.junit.Test;
+
+public final class ArrayUtilsTest {
+
+    private static final byte[] BYTES_ONE = new byte[] {7, 9};
+    private static final byte[] BYTES_TWO = new byte[] {8};
+    private static final byte[] BYTES_EMPTY = new byte[] {};
+    private static final byte[] BYTES_ALL = new byte[] {7, 9, 8};
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testConcatByteArraysNoInput() {
+        assertThat(ArrayUtils.concatByteArrays().length).isEqualTo(0);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testConcatByteArraysOneEmptyArray() {
+        assertThat(ArrayUtils.concatByteArrays(BYTES_EMPTY).length).isEqualTo(0);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testConcatByteArraysOneNonEmptyArray() {
+        assertThat(ArrayUtils.concatByteArrays(BYTES_ONE)).isEqualTo(BYTES_ONE);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testConcatByteArraysMultipleNonEmptyArrays() {
+        assertThat(ArrayUtils.concatByteArrays(BYTES_ONE, BYTES_TWO)).isEqualTo(BYTES_ALL);
+    }
+
+    @Test
+    @SdkSuppress(minSdkVersion = 32, codeName = "T")
+    public void testConcatByteArraysMultipleArrays() {
+        assertThat(ArrayUtils.concatByteArrays(BYTES_ONE, BYTES_EMPTY, BYTES_TWO))
+                .isEqualTo(BYTES_ALL);
+    }
+}
diff --git a/nearby/tests/unit/src/com/android/server/nearby/util/BroadcastPermissionsTest.java b/nearby/tests/unit/src/com/android/server/nearby/util/BroadcastPermissionsTest.java
index 1a22412..71ade2a 100644
--- a/nearby/tests/unit/src/com/android/server/nearby/util/BroadcastPermissionsTest.java
+++ b/nearby/tests/unit/src/com/android/server/nearby/util/BroadcastPermissionsTest.java
@@ -93,4 +93,9 @@
         assertThat(BroadcastPermissions.getPermissionLevel(mMockContext, UID, PID))
                 .isEqualTo(PERMISSION_BLUETOOTH_ADVERTISE);
     }
+
+    @Test
+    public void test_enforceBroadcastPermission() {
+        BroadcastPermissions.enforceBroadcastPermission(mMockContext, mCallerIdentity);
+    }
 }
diff --git a/nearby/tests/unit/src/com/android/server/nearby/util/DataUtilsTest.java b/nearby/tests/unit/src/com/android/server/nearby/util/DataUtilsTest.java
index f098600..a742b3d 100644
--- a/nearby/tests/unit/src/com/android/server/nearby/util/DataUtilsTest.java
+++ b/nearby/tests/unit/src/com/android/server/nearby/util/DataUtilsTest.java
@@ -57,10 +57,6 @@
     private static final String MESSAGE_RETROACTIVE_PAIR_DESCRIPTION = "message 7";
     private static final String MESSAGE_WAIT_LAUNCH_COMPANION_APP_DESCRIPTION = "message 8";
     private static final String MESSAGE_FAIL_CONNECT_DESCRIPTION = "message 9";
-    private static final String MESSAGE_FAST_PAIR_TV_CONNECT_DEVICE_NO_ACCOUNT_DESCRIPTION =
-            "message 10";
-    private static final String MESSAGE_ASSISTANT_HALF_SHEET_DESCRIPTION = "message 11";
-    private static final String MESSAGE_ASSISTANT_NOTIFICATION_DESCRIPTION = "message 12";
 
     @Test
     public void test_toScanFastPairStoreItem_withAccount() {
@@ -107,6 +103,24 @@
     public void test_toString() {
         Cache.ScanFastPairStoreItem item = DataUtils.toScanFastPairStoreItem(
                 createObservedDeviceResponse(), BLUETOOTH_ADDRESS, ACCOUNT);
+
+        assertThat(DataUtils.toString(item))
+                .isEqualTo("ScanFastPairStoreItem=[address:00:11:22:33:FF:EE, "
+                        + "actionUrl:intent:#Intent;action=cto_be_set%3AACTION_MAGIC_PAIR;"
+                        + "package=to_be_set;component=to_be_set;"
+                        + "to_be_set%3AEXTRA_COMPANION_APP=test_package;"
+                        + "end, deviceName:My device, "
+                        + "iconFifeUrl:device_image_url, "
+                        + "fastPairStrings:FastPairStrings[tapToPairWithAccount=message 1, "
+                        + "tapToPairWithoutAccount=message 2, "
+                        + "initialPairingDescription=message 3 My device, "
+                        + "pairingFinishedCompanionAppInstalled=message 4, "
+                        + "pairingFinishedCompanionAppNotInstalled=message 5, "
+                        + "subsequentPairingDescription=message 6, "
+                        + "retroactivePairingDescription=message 7, "
+                        + "waitAppLaunchDescription=message 8, "
+                        + "pairingFailDescription=message 9]]");
+
         FastPairStrings strings = item.getFastPairStrings();
 
         assertThat(DataUtils.toString(strings))
diff --git a/Cronet/tests/cts/src/android/net/http/cts/util/CronetCtsTestServer.kt b/nearby/tests/unit/src/com/android/server/nearby/util/EnvironmentTest.java
similarity index 64%
copy from Cronet/tests/cts/src/android/net/http/cts/util/CronetCtsTestServer.kt
copy to nearby/tests/unit/src/com/android/server/nearby/util/EnvironmentTest.java
index 3ccb571..e167cf4 100644
--- a/Cronet/tests/cts/src/android/net/http/cts/util/CronetCtsTestServer.kt
+++ b/nearby/tests/unit/src/com/android/server/nearby/util/EnvironmentTest.java
@@ -14,13 +14,15 @@
  * limitations under the License.
  */
 
-package android.net.http.cts.util
+package com.android.server.nearby.util;
 
-import android.content.Context
-import android.webkit.cts.CtsTestServer
+import org.junit.Test;
 
-/** Extends CtsTestServer to handle POST requests and other cronet specific test requests */
-class CronetCtsTestServer(context: Context) : CtsTestServer(context) {
+public class EnvironmentTest {
 
-    val successUrl: String = getAssetUrl("html/hello_world.html")
+    @Test
+    public void getNearbyDirectory() {
+        Environment.getNearbyDirectory();
+        Environment.getNearbyDirectory(1);
+    }
 }
diff --git a/nearby/tests/unit/src/com/android/server/nearby/util/encryption/CryptorImpIdentityV1Test.java b/nearby/tests/unit/src/com/android/server/nearby/util/encryption/CryptorImpIdentityV1Test.java
new file mode 100644
index 0000000..f0294fc
--- /dev/null
+++ b/nearby/tests/unit/src/com/android/server/nearby/util/encryption/CryptorImpIdentityV1Test.java
@@ -0,0 +1,76 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.nearby.util.encryption;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import android.util.Log;
+
+import org.junit.Test;
+
+import java.util.Arrays;
+
+public class CryptorImpIdentityV1Test {
+    private static final String TAG = "CryptorImpIdentityV1Test";
+    private static final byte[] SALT = new byte[] {102, 22};
+    private static final byte[] DATA =
+            new byte[] {107, -102, 101, 107, 20, 62, 2, 73, 113, 59, 8, -14, -58, 122};
+    private static final byte[] AUTHENTICITY_KEY =
+            new byte[] {-89, 88, -50, -42, -99, 57, 84, -24, 121, 1, -104, -8, -26, -73, -36, 100};
+
+    @Test
+    public void test_encrypt_decrypt() {
+        Cryptor identityCryptor = CryptorImpIdentityV1.getInstance();
+        byte[] encryptedData = identityCryptor.encrypt(DATA, SALT, AUTHENTICITY_KEY);
+
+        assertThat(identityCryptor.decrypt(encryptedData, SALT, AUTHENTICITY_KEY)).isEqualTo(DATA);
+    }
+
+    @Test
+    public void test_encryption() {
+        Cryptor identityCryptor = CryptorImpIdentityV1.getInstance();
+        byte[] encryptedData = identityCryptor.encrypt(DATA, SALT, AUTHENTICITY_KEY);
+
+        // for debugging
+        Log.d(TAG, "encrypted data is: " + Arrays.toString(encryptedData));
+
+        assertThat(encryptedData).isEqualTo(getEncryptedData());
+    }
+
+    @Test
+    public void test_decryption() {
+        Cryptor identityCryptor = CryptorImpIdentityV1.getInstance();
+        byte[] decryptedData =
+                identityCryptor.decrypt(getEncryptedData(), SALT, AUTHENTICITY_KEY);
+        // for debugging
+        Log.d(TAG, "decrypted data is: " + Arrays.toString(decryptedData));
+
+        assertThat(decryptedData).isEqualTo(DATA);
+    }
+
+    @Test
+    public void generateHmacTag() {
+        CryptorImpIdentityV1 identityCryptor = CryptorImpIdentityV1.getInstance();
+        byte[] generatedTag = identityCryptor.sign(DATA);
+        byte[] expectedTag = new byte[]{50, 116, 95, -87, 63, 123, -79, -43};
+        assertThat(generatedTag).isEqualTo(expectedTag);
+    }
+
+    private static byte[] getEncryptedData() {
+        return new byte[]{6, -31, -32, -123, 43, -92, -47, -110, -65, 126, -15, -51, -19, -43};
+    }
+}
diff --git a/nearby/tests/unit/src/com/android/server/nearby/util/encryption/CryptorImpV1Test.java b/nearby/tests/unit/src/com/android/server/nearby/util/encryption/CryptorImpV1Test.java
new file mode 100644
index 0000000..3ca2575
--- /dev/null
+++ b/nearby/tests/unit/src/com/android/server/nearby/util/encryption/CryptorImpV1Test.java
@@ -0,0 +1,114 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.nearby.util.encryption;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import android.util.Log;
+
+import org.junit.Test;
+
+import java.util.Arrays;
+
+/**
+ * Unit test for {@link CryptorImpV1}
+ */
+public final class CryptorImpV1Test {
+    private static final String TAG = "CryptorImpV1Test";
+    private static final byte[] SALT = new byte[] {102, 22};
+    private static final byte[] DATA =
+            new byte[] {107, -102, 101, 107, 20, 62, 2, 73, 113, 59, 8, -14, -58, 122};
+    private static final byte[] AUTHENTICITY_KEY =
+            new byte[] {-89, 88, -50, -42, -99, 57, 84, -24, 121, 1, -104, -8, -26, -73, -36, 100};
+
+    @Test
+    public void test_encryption() {
+        Cryptor v1Cryptor = CryptorImpV1.getInstance();
+        byte[] encryptedData = v1Cryptor.encrypt(DATA, SALT, AUTHENTICITY_KEY);
+
+        // for debugging
+        Log.d(TAG, "encrypted data is: " + Arrays.toString(encryptedData));
+
+        assertThat(encryptedData).isEqualTo(getEncryptedData());
+    }
+
+    @Test
+    public void test_encryption_invalidInput() {
+        Cryptor v1Cryptor = CryptorImpV1.getInstance();
+        assertThat(v1Cryptor.encrypt(DATA, SALT, new byte[]{1, 2, 3, 4, 6})).isNull();
+    }
+
+    @Test
+    public void test_decryption() {
+        Cryptor v1Cryptor = CryptorImpV1.getInstance();
+        byte[] decryptedData =
+                v1Cryptor.decrypt(getEncryptedData(), SALT, AUTHENTICITY_KEY);
+        // for debugging
+        Log.d(TAG, "decrypted data is: " + Arrays.toString(decryptedData));
+
+        assertThat(decryptedData).isEqualTo(DATA);
+    }
+
+    @Test
+    public void test_decryption_invalidInput() {
+        Cryptor v1Cryptor = CryptorImpV1.getInstance();
+        assertThat(v1Cryptor.decrypt(getEncryptedData(), SALT, new byte[]{1, 2, 3, 4, 6})).isNull();
+    }
+
+    @Test
+    public void generateSign() {
+        CryptorImpV1 v1Cryptor = CryptorImpV1.getInstance();
+        byte[] generatedTag = v1Cryptor.sign(DATA, AUTHENTICITY_KEY);
+        byte[] expectedTag = new byte[]{
+                100, 88, -104, 80, -66, 107, -38, 95, 34, 40, -56, -23, -90, 90, -87, 12};
+        assertThat(generatedTag).isEqualTo(expectedTag);
+    }
+
+    @Test
+    public void test_verify() {
+        CryptorImpV1 v1Cryptor = CryptorImpV1.getInstance();
+        byte[] expectedTag = new byte[]{
+                100, 88, -104, 80, -66, 107, -38, 95, 34, 40, -56, -23, -90, 90, -87, 12};
+
+        assertThat(v1Cryptor.verify(DATA, AUTHENTICITY_KEY, expectedTag)).isTrue();
+        assertThat(v1Cryptor.verify(DATA, AUTHENTICITY_KEY, DATA)).isFalse();
+    }
+
+    @Test
+    public void test_generateHmacTag_sameResult() {
+        CryptorImpV1 v1Cryptor = CryptorImpV1.getInstance();
+        byte[] res1 = v1Cryptor.generateHmacTag(DATA, AUTHENTICITY_KEY);
+        assertThat(res1)
+                .isEqualTo(v1Cryptor.generateHmacTag(DATA, AUTHENTICITY_KEY));
+    }
+
+    @Test
+    public void test_generateHmacTag_nullData() {
+        CryptorImpV1 v1Cryptor = CryptorImpV1.getInstance();
+        assertThat(v1Cryptor.generateHmacTag(/* data= */ null, AUTHENTICITY_KEY)).isNull();
+    }
+
+    @Test
+    public void test_generateHmacTag_nullKey() {
+        CryptorImpV1 v1Cryptor = CryptorImpV1.getInstance();
+        assertThat(v1Cryptor.generateHmacTag(DATA, /* authenticityKey= */ null)).isNull();
+    }
+
+    private static byte[] getEncryptedData() {
+        return new byte[]{-92, 94, -99, -97, 81, -48, -7, 119, -64, -22, 45, -49, -50, 92};
+    }
+}
diff --git a/nearby/tests/unit/src/com/android/server/nearby/util/encryption/CryptorTest.java b/nearby/tests/unit/src/com/android/server/nearby/util/encryption/CryptorTest.java
new file mode 100644
index 0000000..ca612e3
--- /dev/null
+++ b/nearby/tests/unit/src/com/android/server/nearby/util/encryption/CryptorTest.java
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.nearby.util.encryption;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import org.junit.Test;
+
+/**
+ * Unit test for {@link Cryptor}
+ */
+public final class CryptorTest {
+
+    private static final byte[] DATA =
+            new byte[] {107, -102, 101, 107, 20, 62, 2, 73, 113, 59, 8, -14, -58, 122};
+    private static final byte[] AUTHENTICITY_KEY =
+            new byte[] {-89, 88, -50, -42, -99, 57, 84, -24, 121, 1, -104, -8, -26, -73, -36, 100};
+
+    @Test
+    public void test_computeHkdf() {
+        int outputSize = 16;
+        byte[] res1 = Cryptor.computeHkdf(DATA, AUTHENTICITY_KEY, outputSize);
+        byte[] res2 = Cryptor.computeHkdf(DATA,
+                new byte[] {-89, 88, -50, -42, -99, 57, 84, -24, 121, 1, -104, -8, -26},
+                outputSize);
+
+        assertThat(res1).hasLength(outputSize);
+        assertThat(res2).hasLength(outputSize);
+        assertThat(res1).isNotEqualTo(res2);
+        assertThat(res1)
+                .isEqualTo(CryptorImpV1.computeHkdf(DATA, AUTHENTICITY_KEY, outputSize));
+    }
+
+    @Test
+    public void test_computeHkdf_invalidInput() {
+        assertThat(Cryptor.computeHkdf(DATA, AUTHENTICITY_KEY, /* size= */ 256000))
+                .isNull();
+        assertThat(Cryptor.computeHkdf(DATA, new byte[0], /* size= */ 255))
+                .isNull();
+    }
+}
diff --git a/nearby/tests/unit/src/com/android/server/nearby/util/identity/CallerIdentityTest.java b/nearby/tests/unit/src/com/android/server/nearby/util/identity/CallerIdentityTest.java
new file mode 100644
index 0000000..c29cb92
--- /dev/null
+++ b/nearby/tests/unit/src/com/android/server/nearby/util/identity/CallerIdentityTest.java
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.nearby.util.identity;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import org.junit.Test;
+
+public class CallerIdentityTest {
+    private static final int UID = 100;
+    private static final int PID = 10002;
+    private static final String PACKAGE_NAME = "package_name";
+    private static final String ATTRIBUTION_TAG = "attribution_tag";
+
+    @Test
+    public void testToString() {
+        CallerIdentity callerIdentity =
+                CallerIdentity.forTest(UID, PID, PACKAGE_NAME, ATTRIBUTION_TAG);
+        assertThat(callerIdentity.toString()).isEqualTo("100/package_name[attribution_tag]");
+        assertThat(callerIdentity.isSystemServer()).isFalse();
+    }
+
+    @Test
+    public void testHashCode() {
+        CallerIdentity callerIdentity =
+                CallerIdentity.forTest(UID, PID, PACKAGE_NAME, ATTRIBUTION_TAG);
+        CallerIdentity callerIdentity1 =
+                CallerIdentity.forTest(UID, PID, PACKAGE_NAME, ATTRIBUTION_TAG);
+        assertThat(callerIdentity.hashCode()).isEqualTo(callerIdentity1.hashCode());
+    }
+}
diff --git a/service-t/jni/com_android_server_net_NetworkStatsService.cpp b/service-t/jni/com_android_server_net_NetworkStatsService.cpp
index 39cbaf7..af0b8d8 100644
--- a/service-t/jni/com_android_server_net_NetworkStatsService.cpp
+++ b/service-t/jni/com_android_server_net_NetworkStatsService.cpp
@@ -30,9 +30,11 @@
 
 #include "bpf/BpfUtils.h"
 #include "netdbpf/BpfNetworkStats.h"
+#include "netdbpf/NetworkTraceHandler.h"
 
 using android::bpf::bpfGetUidStats;
 using android::bpf::bpfGetIfaceStats;
+using android::bpf::NetworkTraceHandler;
 
 namespace android {
 
@@ -67,7 +69,7 @@
     }
 }
 
-static jlong getTotalStat(JNIEnv* env, jclass clazz, jint type) {
+static jlong nativeGetTotalStat(JNIEnv* env, jclass clazz, jint type) {
     Stats stats = {};
 
     if (bpfGetIfaceStats(NULL, &stats) == 0) {
@@ -77,7 +79,7 @@
     }
 }
 
-static jlong getIfaceStat(JNIEnv* env, jclass clazz, jstring iface, jint type) {
+static jlong nativeGetIfaceStat(JNIEnv* env, jclass clazz, jstring iface, jint type) {
     ScopedUtfChars iface8(env, iface);
     if (iface8.c_str() == NULL) {
         return UNKNOWN;
@@ -92,7 +94,7 @@
     }
 }
 
-static jlong getUidStat(JNIEnv* env, jclass clazz, jint uid, jint type) {
+static jlong nativeGetUidStat(JNIEnv* env, jclass clazz, jint uid, jint type) {
     Stats stats = {};
 
     if (bpfGetUidStats(uid, &stats) == 0) {
@@ -102,10 +104,15 @@
     }
 }
 
+static void nativeInitNetworkTracing(JNIEnv* env, jclass clazz) {
+    NetworkTraceHandler::InitPerfettoTracing();
+}
+
 static const JNINativeMethod gMethods[] = {
-        {"nativeGetTotalStat", "(I)J", (void*)getTotalStat},
-        {"nativeGetIfaceStat", "(Ljava/lang/String;I)J", (void*)getIfaceStat},
-        {"nativeGetUidStat", "(II)J", (void*)getUidStat},
+        {"nativeGetTotalStat", "(I)J", (void*)nativeGetTotalStat},
+        {"nativeGetIfaceStat", "(Ljava/lang/String;I)J", (void*)nativeGetIfaceStat},
+        {"nativeGetUidStat", "(II)J", (void*)nativeGetUidStat},
+        {"nativeInitNetworkTracing", "()V", (void*)nativeInitNetworkTracing},
 };
 
 int register_android_server_net_NetworkStatsService(JNIEnv* env) {
diff --git a/service-t/native/libs/libnetworkstats/Android.bp b/service-t/native/libs/libnetworkstats/Android.bp
index 5b3d314..aa1ee41 100644
--- a/service-t/native/libs/libnetworkstats/Android.bp
+++ b/service-t/native/libs/libnetworkstats/Android.bp
@@ -24,12 +24,19 @@
     host_supported: false,
     header_libs: ["bpf_connectivity_headers"],
     srcs: [
-        "BpfNetworkStats.cpp"
+        "BpfNetworkStats.cpp",
+        "NetworkTraceHandler.cpp",
     ],
     shared_libs: [
         "libbase",
         "liblog",
     ],
+    static_libs: [
+        "libperfetto_client_experimental",
+    ],
+    export_static_lib_headers: [
+        "libperfetto_client_experimental",
+    ],
     export_include_dirs: ["include"],
     cflags: [
         "-Wall",
@@ -54,6 +61,7 @@
     header_libs: ["bpf_connectivity_headers"],
     srcs: [
         "BpfNetworkStatsTest.cpp",
+        "NetworkTraceHandlerTest.cpp",
     ],
     cflags: [
         "-Wall",
@@ -64,10 +72,12 @@
     static_libs: [
         "libgmock",
         "libnetworkstats",
+        "libperfetto_client_experimental",
     ],
     shared_libs: [
         "libbase",
         "liblog",
+        "libandroid_net",
     ],
     compile_multilib: "both",
     multilib: {
diff --git a/service-t/native/libs/libnetworkstats/NetworkTraceHandler.cpp b/service-t/native/libs/libnetworkstats/NetworkTraceHandler.cpp
new file mode 100644
index 0000000..4c37b8d
--- /dev/null
+++ b/service-t/native/libs/libnetworkstats/NetworkTraceHandler.cpp
@@ -0,0 +1,171 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "NetworkTrace"
+
+#include "netdbpf/NetworkTraceHandler.h"
+
+#include <arpa/inet.h>
+#include <bpf/BpfUtils.h>
+#include <log/log.h>
+#include <perfetto/config/android/network_trace_config.pbzero.h>
+#include <perfetto/trace/android/network_trace.pbzero.h>
+#include <perfetto/trace/profiling/profile_packet.pbzero.h>
+#include <perfetto/tracing/platform.h>
+#include <perfetto/tracing/tracing.h>
+
+// Note: this is initializing state for a templated Perfetto type that resides
+// in the `perfetto` namespace. This must be defined in the global scope.
+PERFETTO_DEFINE_DATA_SOURCE_STATIC_MEMBERS(android::bpf::NetworkTraceHandler);
+
+namespace android {
+namespace bpf {
+using ::perfetto::protos::pbzero::NetworkPacketEvent;
+using ::perfetto::protos::pbzero::NetworkPacketTraceConfig;
+using ::perfetto::protos::pbzero::TracePacket;
+using ::perfetto::protos::pbzero::TrafficDirection;
+
+// static
+void NetworkTraceHandler::RegisterDataSource() {
+  ALOGD("Registering Perfetto data source");
+  perfetto::DataSourceDescriptor dsd;
+  dsd.set_name("android.network_packets");
+  NetworkTraceHandler::Register(dsd);
+}
+
+// static
+void NetworkTraceHandler::InitPerfettoTracing() {
+  perfetto::TracingInitArgs args = {};
+  args.backends |= perfetto::kSystemBackend;
+  perfetto::Tracing::Initialize(args);
+  NetworkTraceHandler::RegisterDataSource();
+}
+
+NetworkTraceHandler::NetworkTraceHandler()
+    : NetworkTraceHandler([this](const PacketTrace& pkt) {
+        NetworkTraceHandler::Trace(
+            [this, pkt](NetworkTraceHandler::TraceContext ctx) {
+              Fill(pkt, *ctx.NewTracePacket());
+            });
+      }) {}
+
+void NetworkTraceHandler::OnSetup(const SetupArgs& args) {
+  const std::string& raw = args.config->network_packet_trace_config_raw();
+  NetworkPacketTraceConfig::Decoder config(raw);
+
+  mPollMs = config.poll_ms();
+  if (mPollMs < 100) {
+    ALOGI("poll_ms is missing or below the 100ms minimum. Increasing to 100ms");
+    mPollMs = 100;
+  }
+}
+
+void NetworkTraceHandler::OnStart(const StartArgs&) {
+  if (!Start()) return;
+  mTaskRunner = perfetto::Platform::GetDefaultPlatform()->CreateTaskRunner({});
+  Loop();
+}
+
+void NetworkTraceHandler::OnStop(const StopArgs&) {
+  Stop();
+  mTaskRunner.reset();
+}
+
+void NetworkTraceHandler::Loop() {
+  mTaskRunner->PostDelayedTask([this]() { Loop(); }, mPollMs);
+  ConsumeAll();
+}
+
+void NetworkTraceHandler::Fill(const PacketTrace& src, TracePacket& dst) {
+  dst.set_timestamp(src.timestampNs);
+  auto* event = dst.set_network_packet();
+  event->set_direction(src.egress ? TrafficDirection::DIR_EGRESS
+                                  : TrafficDirection::DIR_INGRESS);
+  event->set_length(src.length);
+  event->set_uid(src.uid);
+  event->set_tag(src.tag);
+
+  event->set_local_port(src.egress ? ntohs(src.sport) : ntohs(src.dport));
+  event->set_remote_port(src.egress ? ntohs(src.dport) : ntohs(src.sport));
+
+  event->set_ip_proto(src.ipProto);
+  event->set_tcp_flags(src.tcpFlags);
+
+  char ifname[IF_NAMESIZE] = {};
+  if (if_indextoname(src.ifindex, ifname) == ifname) {
+    event->set_interface(std::string(ifname));
+  } else {
+    event->set_interface("error");
+  }
+}
+
+bool NetworkTraceHandler::Start() {
+  ALOGD("Starting datasource");
+
+  auto status = mConfigurationMap.init(PACKET_TRACE_ENABLED_MAP_PATH);
+  if (!status.ok()) {
+    ALOGW("Failed to bind config map: %s", status.error().message().c_str());
+    return false;
+  }
+
+  auto rb = BpfRingbuf<PacketTrace>::Create(PACKET_TRACE_RINGBUF_PATH);
+  if (!rb.ok()) {
+    ALOGW("Failed to create ringbuf: %s", rb.error().message().c_str());
+    return false;
+  }
+
+  mRingBuffer = std::move(*rb);
+
+  auto res = mConfigurationMap.writeValue(0, true, BPF_ANY);
+  if (!res.ok()) {
+    ALOGW("Failed to enable tracing: %s", res.error().message().c_str());
+    return false;
+  }
+
+  return true;
+}
+
+bool NetworkTraceHandler::Stop() {
+  ALOGD("Stopping datasource");
+
+  auto res = mConfigurationMap.writeValue(0, false, BPF_ANY);
+  if (!res.ok()) {
+    ALOGW("Failed to disable tracing: %s", res.error().message().c_str());
+    return false;
+  }
+
+  mRingBuffer.reset();
+
+  return true;
+}
+
+bool NetworkTraceHandler::ConsumeAll() {
+  if (mRingBuffer == nullptr) {
+    ALOGW("Tracing is not active");
+    return false;
+  }
+
+  base::Result<int> ret = mRingBuffer->ConsumeAll(mCallback);
+  if (!ret.ok()) {
+    ALOGW("Failed to poll ringbuf: %s", ret.error().message().c_str());
+    return false;
+  }
+
+  return true;
+}
+
+}  // namespace bpf
+}  // namespace android
diff --git a/service-t/native/libs/libnetworkstats/NetworkTraceHandlerTest.cpp b/service-t/native/libs/libnetworkstats/NetworkTraceHandlerTest.cpp
new file mode 100644
index 0000000..760ae91
--- /dev/null
+++ b/service-t/native/libs/libnetworkstats/NetworkTraceHandlerTest.cpp
@@ -0,0 +1,198 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/unique_fd.h>
+#include <android/multinetwork.h>
+#include <arpa/inet.h>
+#include <gmock/gmock.h>
+#include <gtest/gtest.h>
+#include <inttypes.h>
+#include <net/if.h>
+#include <netinet/tcp.h>
+#include <sys/socket.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <vector>
+
+#include "netdbpf/NetworkTraceHandler.h"
+
+using ::testing::AllOf;
+using ::testing::AnyOf;
+using ::testing::Each;
+using ::testing::Eq;
+using ::testing::Field;
+using ::testing::Test;
+
+namespace android {
+namespace bpf {
+
+__be16 bindAndListen(int s) {
+  sockaddr_in sin = {.sin_family = AF_INET};
+  socklen_t len = sizeof(sin);
+  if (bind(s, (sockaddr*)&sin, sizeof(sin))) return 0;
+  if (listen(s, 1)) return 0;
+  if (getsockname(s, (sockaddr*)&sin, &len)) return 0;
+  return sin.sin_port;
+}
+
+// This takes tcp flag constants from the standard library and makes them usable
+// with the flags we get from BPF. The standard library flags are big endian
+// whereas the BPF flags are reported in host byte order. BPF also trims the
+// flags down to the 8 single-bit flag bits (fin, syn, rst, etc).
+constexpr inline uint8_t FlagToHost(__be32 be_unix_flags) {
+  return ntohl(be_unix_flags) >> 16;
+}
+
+// Pretty prints all fields for a list of packets (useful for debugging).
+struct PacketPrinter {
+  const std::vector<PacketTrace>& data;
+  static constexpr char kTcpFlagNames[] = "FSRPAUEC";
+
+  friend std::ostream& operator<<(std::ostream& os, const PacketPrinter& d) {
+    os << "Packet count: " << d.data.size();
+    for (const PacketTrace& info : d.data) {
+      os << "\nifidx=" << info.ifindex;
+      os << ", len=" << info.length;
+      os << ", uid=" << info.uid;
+      os << ", tag=" << info.tag;
+      os << ", sport=" << info.sport;
+      os << ", dport=" << info.dport;
+      os << ", direction=" << (info.egress ? "egress" : "ingress");
+      os << ", proto=" << static_cast<int>(info.ipProto);
+      os << ", ip=" << static_cast<int>(info.ipVersion);
+      os << ", flags=";
+      for (int i = 0; i < 8; i++) {
+        os << ((info.tcpFlags & (1 << i)) ? kTcpFlagNames[i] : '.');
+      }
+    }
+    return os;
+  }
+};
+
+class NetworkTraceHandlerTest : public testing::Test {
+ protected:
+  void SetUp() {
+    if (access(PACKET_TRACE_RINGBUF_PATH, R_OK)) {
+      GTEST_SKIP() << "Network tracing is not enabled/loaded on this build";
+    }
+  }
+};
+
+TEST_F(NetworkTraceHandlerTest, PollWhileInactive) {
+  NetworkTraceHandler handler([&](const PacketTrace& pkt) {});
+
+  // One succeed after start and before stop.
+  EXPECT_FALSE(handler.ConsumeAll());
+  ASSERT_TRUE(handler.Start());
+  EXPECT_TRUE(handler.ConsumeAll());
+  ASSERT_TRUE(handler.Stop());
+  EXPECT_FALSE(handler.ConsumeAll());
+}
+
+TEST_F(NetworkTraceHandlerTest, TraceTcpSession) {
+  __be16 server_port = 0;
+  std::vector<PacketTrace> packets;
+
+  // Record all packets with the bound address and current uid. This callback is
+  // involked only within ConsumeAll, at which point the port should have
+  // already been filled in and all packets have been processed.
+  NetworkTraceHandler handler([&](const PacketTrace& pkt) {
+    if (pkt.sport != server_port && pkt.dport != server_port) return;
+    if (pkt.uid != getuid()) return;
+    packets.push_back(pkt);
+  });
+
+  ASSERT_TRUE(handler.Start());
+  const uint32_t kClientTag = 2468;
+  const uint32_t kServerTag = 1357;
+
+  // Go through a typical connection sequence between two v4 sockets using tcp.
+  // This covers connection handshake, shutdown, and one data packet.
+  {
+    android::base::unique_fd clientsocket(socket(AF_INET, SOCK_STREAM, 0));
+    ASSERT_NE(-1, clientsocket) << "Failed to open client socket";
+    ASSERT_EQ(android_tag_socket(clientsocket, kClientTag), 0);
+
+    android::base::unique_fd serversocket(socket(AF_INET, SOCK_STREAM, 0));
+    ASSERT_NE(-1, serversocket) << "Failed to open server socket";
+    ASSERT_EQ(android_tag_socket(serversocket, kServerTag), 0);
+
+    server_port = bindAndListen(serversocket);
+    ASSERT_NE(0, server_port) << "Can't bind to server port";
+
+    sockaddr_in addr = {.sin_family = AF_INET, .sin_port = server_port};
+    ASSERT_EQ(0, connect(clientsocket, (sockaddr*)&addr, sizeof(addr)))
+        << "connect to loopback failed: " << strerror(errno);
+
+    int accepted = accept(serversocket, nullptr, nullptr);
+    ASSERT_NE(-1, accepted) << "accept connection failed: " << strerror(errno);
+
+    const char data[] = "abcdefghijklmnopqrstuvwxyz";
+    EXPECT_EQ(send(clientsocket, data, sizeof(data), 0), sizeof(data))
+        << "failed to send message: " << strerror(errno);
+
+    char buff[100] = {};
+    EXPECT_EQ(recv(accepted, buff, sizeof(buff), 0), sizeof(data))
+        << "failed to receive message: " << strerror(errno);
+
+    EXPECT_EQ(std::string(data), std::string(buff));
+  }
+
+  ASSERT_TRUE(handler.ConsumeAll());
+  ASSERT_TRUE(handler.Stop());
+
+  // There are 12 packets in total (6 messages: each seen by client & server):
+  // 1. Client connects to server with syn
+  // 2. Server responds with syn ack
+  // 3. Client responds with ack
+  // 4. Client sends data with psh ack
+  // 5. Server acks the data packet
+  // 6. Client closes connection with fin ack
+  ASSERT_EQ(packets.size(), 12) << PacketPrinter{packets};
+
+  // All packets should be TCP packets.
+  EXPECT_THAT(packets, Each(Field(&PacketTrace::ipProto, Eq(IPPROTO_TCP))));
+
+  // Packet 1: client requests connection with server.
+  EXPECT_EQ(packets[0].egress, 1) << PacketPrinter{packets};
+  EXPECT_EQ(packets[0].dport, server_port) << PacketPrinter{packets};
+  EXPECT_EQ(packets[0].tag, kClientTag) << PacketPrinter{packets};
+  EXPECT_EQ(packets[0].tcpFlags, FlagToHost(TCP_FLAG_SYN))
+      << PacketPrinter{packets};
+
+  // Packet 2: server receives request from client.
+  EXPECT_EQ(packets[1].egress, 0) << PacketPrinter{packets};
+  EXPECT_EQ(packets[1].dport, server_port) << PacketPrinter{packets};
+  EXPECT_EQ(packets[1].tag, kServerTag) << PacketPrinter{packets};
+  EXPECT_EQ(packets[1].tcpFlags, FlagToHost(TCP_FLAG_SYN))
+      << PacketPrinter{packets};
+
+  // Packet 3: server replies back with syn ack.
+  EXPECT_EQ(packets[2].egress, 1) << PacketPrinter{packets};
+  EXPECT_EQ(packets[2].sport, server_port) << PacketPrinter{packets};
+  EXPECT_EQ(packets[2].tcpFlags, FlagToHost(TCP_FLAG_SYN | TCP_FLAG_ACK))
+      << PacketPrinter{packets};
+
+  // Packet 4: client receives the server's syn ack.
+  EXPECT_EQ(packets[3].egress, 0) << PacketPrinter{packets};
+  EXPECT_EQ(packets[3].sport, server_port) << PacketPrinter{packets};
+  EXPECT_EQ(packets[3].tcpFlags, FlagToHost(TCP_FLAG_SYN | TCP_FLAG_ACK))
+      << PacketPrinter{packets};
+}
+
+}  // namespace bpf
+}  // namespace android
diff --git a/service-t/native/libs/libnetworkstats/include/netdbpf/NetworkTraceHandler.h b/service-t/native/libs/libnetworkstats/include/netdbpf/NetworkTraceHandler.h
new file mode 100644
index 0000000..c257aa0
--- /dev/null
+++ b/service-t/native/libs/libnetworkstats/include/netdbpf/NetworkTraceHandler.h
@@ -0,0 +1,84 @@
+/**
+ * Copyright (c) 2023, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <perfetto/base/task_runner.h>
+#include <perfetto/tracing.h>
+
+#include <string>
+#include <unordered_map>
+
+#include "bpf/BpfMap.h"
+#include "bpf/BpfRingbuf.h"
+
+// For PacketTrace struct definition
+#include "netd.h"
+
+namespace android {
+namespace bpf {
+
+class NetworkTraceHandler : public perfetto::DataSource<NetworkTraceHandler> {
+ public:
+  // Registers this DataSource.
+  static void RegisterDataSource();
+
+  // Connects to the system Perfetto daemon and registers the trace handler.
+  static void InitPerfettoTracing();
+
+  // Initialize with the default Perfetto callback.
+  NetworkTraceHandler();
+
+  // Testonly: initialize with a callback capable of intercepting data.
+  NetworkTraceHandler(std::function<void(const PacketTrace&)> callback)
+      : mCallback(std::move(callback)) {}
+
+  // Testonly: standalone functions without perfetto dependency.
+  bool Start();
+  bool Stop();
+  bool ConsumeAll();
+
+  // perfetto::DataSource overrides:
+  void OnSetup(const SetupArgs&) override;
+  void OnStart(const StartArgs&) override;
+  void OnStop(const StopArgs&) override;
+
+  // Convert a PacketTrace into a Perfetto trace packet.
+  void Fill(const PacketTrace& src,
+            ::perfetto::protos::pbzero::TracePacket& dst);
+
+ private:
+  void Loop();
+
+  // How often to poll the ring buffer, defined by the trace config.
+  uint32_t mPollMs;
+
+  // The function to process PacketTrace, typically a Perfetto sink.
+  std::function<void(const PacketTrace&)> mCallback;
+
+  // The BPF ring buffer handle.
+  std::unique_ptr<BpfRingbuf<PacketTrace>> mRingBuffer;
+
+  // The packet tracing config map (really a 1-element array).
+  BpfMap<uint32_t, bool> mConfigurationMap;
+
+  // This must be the last member, causing it to be the first deleted. If it is
+  // not, members required for callbacks can be deleted before it's stopped.
+  std::unique_ptr<perfetto::base::TaskRunner> mTaskRunner;
+};
+
+}  // namespace bpf
+}  // namespace android
diff --git a/service-t/src/com/android/server/NetworkStatsServiceInitializer.java b/service-t/src/com/android/server/NetworkStatsServiceInitializer.java
index 0ea126a..82a4fbd 100644
--- a/service-t/src/com/android/server/NetworkStatsServiceInitializer.java
+++ b/service-t/src/com/android/server/NetworkStatsServiceInitializer.java
@@ -18,6 +18,7 @@
 
 import android.content.Context;
 import android.net.TrafficStats;
+import android.os.Build;
 import android.util.Log;
 
 import com.android.modules.utils.build.SdkLevel;
@@ -46,6 +47,15 @@
                     /* allowIsolated= */ false);
             TrafficStats.init(getContext());
         }
+
+        // The following code registers the Perfetto Network Trace Handler on non-user builds.
+        // The enhanced tracing is intended to be used for debugging and diagnosing issues. This
+        // is conditional on the build type rather than `isDebuggable` to match the system_server
+        // selinux rules which only allow the Perfetto connection under the same circumstances.
+        if (SdkLevel.isAtLeastU() && !Build.TYPE.equals("user")) {
+            Log.i(TAG, "Initializing network tracing hooks");
+            NetworkStatsService.nativeInitNetworkTracing();
+        }
     }
 
     @Override
diff --git a/service-t/src/com/android/server/NsdService.java b/service-t/src/com/android/server/NsdService.java
index 84b9f12..5dcf860 100644
--- a/service-t/src/com/android/server/NsdService.java
+++ b/service-t/src/com/android/server/NsdService.java
@@ -60,6 +60,7 @@
 import com.android.net.module.util.DeviceConfigUtils;
 import com.android.net.module.util.PermissionUtils;
 import com.android.server.connectivity.mdns.ExecutorProvider;
+import com.android.server.connectivity.mdns.MdnsAdvertiser;
 import com.android.server.connectivity.mdns.MdnsDiscoveryManager;
 import com.android.server.connectivity.mdns.MdnsMultinetworkSocketClient;
 import com.android.server.connectivity.mdns.MdnsSearchOptions;
@@ -74,9 +75,15 @@
 import java.net.NetworkInterface;
 import java.net.SocketException;
 import java.net.UnknownHostException;
+import java.nio.ByteBuffer;
+import java.nio.CharBuffer;
+import java.nio.charset.Charset;
+import java.nio.charset.CharsetEncoder;
+import java.nio.charset.StandardCharsets;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
+import java.util.Objects;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
@@ -89,10 +96,22 @@
 public class NsdService extends INsdManager.Stub {
     private static final String TAG = "NsdService";
     private static final String MDNS_TAG = "mDnsConnector";
+    /**
+     * Enable discovery using the Java DiscoveryManager, instead of the legacy mdnsresponder
+     * implementation.
+     */
     private static final String MDNS_DISCOVERY_MANAGER_VERSION = "mdns_discovery_manager_version";
     private static final String LOCAL_DOMAIN_NAME = "local";
+    // Max label length as per RFC 1034/1035
+    private static final int MAX_LABEL_LENGTH = 63;
 
-    private static final boolean DBG = Log.isLoggable(TAG, Log.DEBUG);
+    /**
+     * Enable advertising using the Java MdnsAdvertiser, instead of the legacy mdnsresponder
+     * implementation.
+     */
+    private static final String MDNS_ADVERTISER_VERSION = "mdns_advertiser_version";
+
+    public static final boolean DBG = Log.isLoggable(TAG, Log.DEBUG);
     private static final long CLEANUP_DELAY_MS = 10000;
     private static final int IFACE_IDX_ANY = 0;
 
@@ -106,6 +125,8 @@
     private final MdnsDiscoveryManager mMdnsDiscoveryManager;
     @Nullable
     private final MdnsSocketProvider mMdnsSocketProvider;
+    @Nullable
+    private final MdnsAdvertiser mAdvertiser;
     // WARNING : Accessing these values in any thread is not safe, it must only be changed in the
     // state machine thread. If change this outside state machine, it will need to introduce
     // synchronization.
@@ -345,7 +366,7 @@
                                 mLegacyClientCount -= 1;
                             }
                         }
-                        if (mMdnsDiscoveryManager != null) {
+                        if (mMdnsDiscoveryManager != null || mAdvertiser != null) {
                             maybeStopMonitoringSocketsIfNoActiveRequest();
                         }
                         maybeScheduleStop();
@@ -385,6 +406,20 @@
                                     clientId, NsdManager.FAILURE_INTERNAL_ERROR);
                         }
                         break;
+                    case NsdManager.STOP_RESOLUTION:
+                        cInfo = getClientInfoForReply(msg);
+                        if (cInfo != null) {
+                            cInfo.onStopResolutionFailed(
+                                    clientId, NsdManager.FAILURE_OPERATION_NOT_RUNNING);
+                        }
+                        break;
+                    case NsdManager.REGISTER_SERVICE_CALLBACK:
+                        cInfo = getClientInfoForReply(msg);
+                        if (cInfo != null) {
+                            cInfo.onServiceInfoCallbackRegistrationFailed(
+                                    clientId, NsdManager.FAILURE_BAD_PARAMETERS);
+                        }
+                        break;
                     case NsdManager.DAEMON_CLEANUP:
                         maybeStopDaemon();
                         break;
@@ -446,6 +481,7 @@
                 clientInfo.mClientRequests.delete(clientId);
                 mIdToClientInfoMap.remove(globalId);
                 maybeScheduleStop();
+                maybeStopMonitoringSocketsIfNoActiveRequest();
             }
 
             private void storeListenerMap(int clientId, int transactionId, MdnsListener listener,
@@ -462,6 +498,11 @@
                 maybeStopMonitoringSocketsIfNoActiveRequest();
             }
 
+            private void clearRegisteredServiceInfo(ClientInfo clientInfo) {
+                clientInfo.mRegisteredService = null;
+                clientInfo.mClientIdForServiceUpdates = 0;
+            }
+
             /**
              * Check the given service type is valid and construct it to a service type
              * which can use for discovery / resolution service.
@@ -484,8 +525,31 @@
                 final Matcher matcher = serviceTypePattern.matcher(serviceType);
                 if (!matcher.matches()) return null;
                 return matcher.group(1) == null
-                        ? serviceType + ".local"
-                        : matcher.group(1) + "_sub." + matcher.group(2) + ".local";
+                        ? serviceType
+                        : matcher.group(1) + "_sub." + matcher.group(2);
+            }
+
+            /**
+             * Truncate a service name to up to 63 UTF-8 bytes.
+             *
+             * See RFC6763 4.1.1: service instance names are UTF-8 and up to 63 bytes. Truncating
+             * names used in registerService follows historical behavior (see mdnsresponder
+             * handle_regservice_request).
+             */
+            @NonNull
+            private String truncateServiceName(@NonNull String originalName) {
+                // UTF-8 is at most 4 bytes per character; return early in the common case where
+                // the name can't possibly be over the limit given its string length.
+                if (originalName.length() <= MAX_LABEL_LENGTH / 4) return originalName;
+
+                final Charset utf8 = StandardCharsets.UTF_8;
+                final CharsetEncoder encoder = utf8.newEncoder();
+                final ByteBuffer out = ByteBuffer.allocate(MAX_LABEL_LENGTH);
+                // encode will write as many characters as possible to the out buffer, and just
+                // return an overflow code if there were too many characters (no need to check the
+                // return code here, this method truncates the name on purpose).
+                encoder.encode(CharBuffer.wrap(originalName), out, true /* endOfInput */);
+                return new String(out.array(), 0, out.position(), utf8);
             }
 
             @Override
@@ -523,14 +587,16 @@
                                 break;
                             }
 
+                            final String listenServiceType = serviceType + ".local";
                             maybeStartMonitoringSockets();
                             final MdnsListener listener =
-                                    new DiscoveryListener(clientId, id, info, serviceType);
+                                    new DiscoveryListener(clientId, id, info, listenServiceType);
                             final MdnsSearchOptions options = MdnsSearchOptions.newBuilder()
                                     .setNetwork(info.getNetwork())
                                     .setIsPassiveMode(true)
                                     .build();
-                            mMdnsDiscoveryManager.registerListener(serviceType, listener, options);
+                            mMdnsDiscoveryManager.registerListener(
+                                    listenServiceType, listener, options);
                             storeListenerMap(clientId, id, listener, clientInfo);
                             clientInfo.onDiscoverServicesStarted(clientId, info);
                         } else {
@@ -608,16 +674,36 @@
                             break;
                         }
 
-                        maybeStartDaemon();
                         id = getUniqueId();
-                        if (registerService(id, args.serviceInfo)) {
-                            if (DBG) Log.d(TAG, "Register " + clientId + " " + id);
+                        if (mAdvertiser != null) {
+                            final NsdServiceInfo serviceInfo = args.serviceInfo;
+                            final String serviceType = serviceInfo.getServiceType();
+                            final String registerServiceType = constructServiceType(serviceType);
+                            if (registerServiceType == null) {
+                                Log.e(TAG, "Invalid service type: " + serviceType);
+                                clientInfo.onRegisterServiceFailed(clientId,
+                                        NsdManager.FAILURE_INTERNAL_ERROR);
+                                break;
+                            }
+                            serviceInfo.setServiceType(registerServiceType);
+                            serviceInfo.setServiceName(truncateServiceName(
+                                    serviceInfo.getServiceName()));
+
+                            maybeStartMonitoringSockets();
+                            mAdvertiser.addService(id, serviceInfo);
                             storeRequestMap(clientId, id, clientInfo, msg.what);
-                            // Return success after mDns reports success
                         } else {
-                            unregisterService(id);
-                            clientInfo.onRegisterServiceFailed(
-                                    clientId, NsdManager.FAILURE_INTERNAL_ERROR);
+                            maybeStartDaemon();
+                            if (registerService(id, args.serviceInfo)) {
+                                if (DBG) Log.d(TAG, "Register " + clientId + " " + id);
+                                storeRequestMap(clientId, id, clientInfo, msg.what);
+                                // Return success after mDns reports success
+                            } else {
+                                unregisterService(id);
+                                clientInfo.onRegisterServiceFailed(
+                                        clientId, NsdManager.FAILURE_INTERNAL_ERROR);
+                            }
+
                         }
                         break;
                     case NsdManager.UNREGISTER_SERVICE:
@@ -633,11 +719,17 @@
                         }
                         id = clientInfo.mClientIds.get(clientId);
                         removeRequestMap(clientId, id, clientInfo);
-                        if (unregisterService(id)) {
+
+                        if (mAdvertiser != null) {
+                            mAdvertiser.removeService(id);
                             clientInfo.onUnregisterServiceSucceeded(clientId);
                         } else {
-                            clientInfo.onUnregisterServiceFailed(
-                                    clientId, NsdManager.FAILURE_INTERNAL_ERROR);
+                            if (unregisterService(id)) {
+                                clientInfo.onUnregisterServiceSucceeded(clientId);
+                            } else {
+                                clientInfo.onUnregisterServiceFailed(
+                                        clientId, NsdManager.FAILURE_INTERNAL_ERROR);
+                            }
                         }
                         break;
                     case NsdManager.RESOLVE_SERVICE: {
@@ -661,15 +753,17 @@
                                         NsdManager.FAILURE_INTERNAL_ERROR);
                                 break;
                             }
+                            final String resolveServiceType = serviceType + ".local";
 
                             maybeStartMonitoringSockets();
                             final MdnsListener listener =
-                                    new ResolutionListener(clientId, id, info, serviceType);
+                                    new ResolutionListener(clientId, id, info, resolveServiceType);
                             final MdnsSearchOptions options = MdnsSearchOptions.newBuilder()
                                     .setNetwork(info.getNetwork())
                                     .setIsPassiveMode(true)
                                     .build();
-                            mMdnsDiscoveryManager.registerListener(serviceType, listener, options);
+                            mMdnsDiscoveryManager.registerListener(
+                                    resolveServiceType, listener, options);
                             storeListenerMap(clientId, id, listener, clientInfo);
                         } else {
                             if (clientInfo.mResolvedService != null) {
@@ -689,6 +783,79 @@
                         }
                         break;
                     }
+                    case NsdManager.STOP_RESOLUTION:
+                        if (DBG) Log.d(TAG, "Stop service resolution");
+                        args = (ListenerArgs) msg.obj;
+                        clientInfo = mClients.get(args.connector);
+                        // If the binder death notification for a INsdManagerCallback was received
+                        // before any calls are received by NsdService, the clientInfo would be
+                        // cleared and cause NPE. Add a null check here to prevent this corner case.
+                        if (clientInfo == null) {
+                            Log.e(TAG, "Unknown connector in stop resolution");
+                            break;
+                        }
+
+                        id = clientInfo.mClientIds.get(clientId);
+                        removeRequestMap(clientId, id, clientInfo);
+                        if (stopResolveService(id)) {
+                            clientInfo.onStopResolutionSucceeded(clientId);
+                        } else {
+                            clientInfo.onStopResolutionFailed(
+                                    clientId, NsdManager.FAILURE_OPERATION_NOT_RUNNING);
+                        }
+                        clientInfo.mResolvedService = null;
+                        // TODO: Implement the stop resolution with MdnsDiscoveryManager.
+                        break;
+                    case NsdManager.REGISTER_SERVICE_CALLBACK:
+                        if (DBG) Log.d(TAG, "Register a service callback");
+                        args = (ListenerArgs) msg.obj;
+                        clientInfo = mClients.get(args.connector);
+                        // If the binder death notification for a INsdManagerCallback was received
+                        // before any calls are received by NsdService, the clientInfo would be
+                        // cleared and cause NPE. Add a null check here to prevent this corner case.
+                        if (clientInfo == null) {
+                            Log.e(TAG, "Unknown connector in callback registration");
+                            break;
+                        }
+
+                        if (clientInfo.mRegisteredService != null) {
+                            clientInfo.onServiceInfoCallbackRegistrationFailed(
+                                    clientId, NsdManager.FAILURE_ALREADY_ACTIVE);
+                            break;
+                        }
+
+                        maybeStartDaemon();
+                        id = getUniqueId();
+                        if (resolveService(id, args.serviceInfo)) {
+                            clientInfo.mRegisteredService = new NsdServiceInfo();
+                            clientInfo.mClientIdForServiceUpdates = clientId;
+                            storeRequestMap(clientId, id, clientInfo, msg.what);
+                        } else {
+                            clientInfo.onServiceInfoCallbackRegistrationFailed(
+                                    clientId, NsdManager.FAILURE_BAD_PARAMETERS);
+                        }
+                        break;
+                    case NsdManager.UNREGISTER_SERVICE_CALLBACK:
+                        if (DBG) Log.d(TAG, "Unregister a service callback");
+                        args = (ListenerArgs) msg.obj;
+                        clientInfo = mClients.get(args.connector);
+                        // If the binder death notification for a INsdManagerCallback was received
+                        // before any calls are received by NsdService, the clientInfo would be
+                        // cleared and cause NPE. Add a null check here to prevent this corner case.
+                        if (clientInfo == null) {
+                            Log.e(TAG, "Unknown connector in callback unregistration");
+                            break;
+                        }
+
+                        id = clientInfo.mClientIds.get(clientId);
+                        removeRequestMap(clientId, id, clientInfo);
+                        if (stopResolveService(id)) {
+                            clientInfo.onServiceInfoCallbackUnregistered(clientId);
+                        } else {
+                            Log.e(TAG, "Failed to unregister service info callback");
+                        }
+                        clearRegisteredServiceInfo(clientInfo);
+                        break;
                     case MDNS_SERVICE_EVENT:
                         if (!handleMDnsServiceEvent(msg.arg1, msg.arg2, msg.obj)) {
                             return NOT_HANDLED;
@@ -705,6 +872,19 @@
                 return HANDLED;
             }
 
+            private void notifyResolveFailedResult(boolean isListenedToUpdates, int clientId,
+                    ClientInfo clientInfo, int error) {
+                if (isListenedToUpdates) {
+                    clientInfo.onServiceInfoCallbackRegistrationFailed(clientId, error);
+                    clearRegisteredServiceInfo(clientInfo);
+                } else {
+                    // The resolve API always returned FAILURE_INTERNAL_ERROR on error; keep it
+                    // for backwards compatibility.
+                    clientInfo.onResolveServiceFailed(clientId, NsdManager.FAILURE_INTERNAL_ERROR);
+                    clientInfo.mResolvedService = null;
+                }
+            }
+
             private boolean handleMDnsServiceEvent(int code, int id, Object obj) {
                 NsdServiceInfo servInfo;
                 ClientInfo clientInfo = mIdToClientInfoMap.get(id);
@@ -739,6 +919,12 @@
                             // interfaces that do not have an associated Network.
                             break;
                         }
+                        if (foundNetId == INetd.DUMMY_NET_ID) {
+                            // Ignore services on the dummy0 interface: they are only seen when
+                            // discovering locally advertised services, and are not reachable
+                            // through that interface.
+                            break;
+                        }
                         setServiceNetworkForCallback(servInfo, info.netId, info.interfaceIdx);
                         clientInfo.onServiceFound(clientId, servInfo);
                         break;
@@ -755,6 +941,8 @@
                         // found services on the same interface index and their network at the time
                         setServiceNetworkForCallback(servInfo, lostNetId, info.interfaceIdx);
                         clientInfo.onServiceLost(clientId, servInfo);
+                        // TODO: also support registered service lost when not discovering
+                        clientInfo.maybeNotifyRegisteredServiceLost(servInfo);
                         break;
                     }
                     case IMDnsEventListener.SERVICE_DISCOVERY_FAILED:
@@ -791,10 +979,15 @@
                         String rest = fullName.substring(index);
                         String type = rest.replace(".local.", "");
 
-                        clientInfo.mResolvedService.setServiceName(name);
-                        clientInfo.mResolvedService.setServiceType(type);
-                        clientInfo.mResolvedService.setPort(info.port);
-                        clientInfo.mResolvedService.setTxtRecords(info.txtRecord);
+                        final boolean isListenedToUpdates =
+                                clientId == clientInfo.mClientIdForServiceUpdates;
+                        final NsdServiceInfo serviceInfo = isListenedToUpdates
+                                ? clientInfo.mRegisteredService : clientInfo.mResolvedService;
+
+                        serviceInfo.setServiceName(name);
+                        serviceInfo.setServiceType(type);
+                        serviceInfo.setPort(info.port);
+                        serviceInfo.setTxtRecords(info.txtRecord);
                         // Network will be added after SERVICE_GET_ADDR_SUCCESS
 
                         stopResolveService(id);
@@ -804,9 +997,8 @@
                         if (getAddrInfo(id2, info.hostname, info.interfaceIdx)) {
                             storeRequestMap(clientId, id2, clientInfo, NsdManager.RESOLVE_SERVICE);
                         } else {
-                            clientInfo.onResolveServiceFailed(
-                                    clientId, NsdManager.FAILURE_INTERNAL_ERROR);
-                            clientInfo.mResolvedService = null;
+                            notifyResolveFailedResult(isListenedToUpdates, clientId, clientInfo,
+                                    NsdManager.FAILURE_BAD_PARAMETERS);
                         }
                         break;
                     }
@@ -814,17 +1006,17 @@
                         /* NNN resolveId errorCode */
                         stopResolveService(id);
                         removeRequestMap(clientId, id, clientInfo);
-                        clientInfo.mResolvedService = null;
-                        clientInfo.onResolveServiceFailed(
-                                clientId, NsdManager.FAILURE_INTERNAL_ERROR);
+                        notifyResolveFailedResult(
+                                clientId == clientInfo.mClientIdForServiceUpdates,
+                                clientId, clientInfo, NsdManager.FAILURE_BAD_PARAMETERS);
                         break;
                     case IMDnsEventListener.SERVICE_GET_ADDR_FAILED:
                         /* NNN resolveId errorCode */
                         stopGetAddrInfo(id);
                         removeRequestMap(clientId, id, clientInfo);
-                        clientInfo.mResolvedService = null;
-                        clientInfo.onResolveServiceFailed(
-                                clientId, NsdManager.FAILURE_INTERNAL_ERROR);
+                        notifyResolveFailedResult(
+                                clientId == clientInfo.mClientIdForServiceUpdates,
+                                clientId, clientInfo, NsdManager.FAILURE_BAD_PARAMETERS);
                         break;
                     case IMDnsEventListener.SERVICE_GET_ADDR_SUCCESS: {
                         /* NNN resolveId hostname ttl addr interfaceIdx netId */
@@ -841,19 +1033,38 @@
                         // If the resolved service is on an interface without a network, consider it
                         // as a failure: it would not be usable by apps as they would need
                         // privileged permissions.
-                        if (netId != NETID_UNSET && serviceHost != null) {
-                            clientInfo.mResolvedService.setHost(serviceHost);
-                            setServiceNetworkForCallback(clientInfo.mResolvedService,
-                                    netId, info.interfaceIdx);
-                            clientInfo.onResolveServiceSucceeded(
-                                    clientId, clientInfo.mResolvedService);
+                        if (clientId == clientInfo.mClientIdForServiceUpdates) {
+                            if (netId != NETID_UNSET && serviceHost != null) {
+                                setServiceNetworkForCallback(clientInfo.mRegisteredService,
+                                        netId, info.interfaceIdx);
+                                final List<InetAddress> addresses =
+                                        clientInfo.mRegisteredService.getHostAddresses();
+                                addresses.add(serviceHost);
+                                clientInfo.mRegisteredService.setHostAddresses(addresses);
+                                clientInfo.onServiceUpdated(
+                                        clientId, clientInfo.mRegisteredService);
+                            } else {
+                                stopGetAddrInfo(id);
+                                removeRequestMap(clientId, id, clientInfo);
+                                clearRegisteredServiceInfo(clientInfo);
+                                clientInfo.onServiceInfoCallbackRegistrationFailed(
+                                        clientId, NsdManager.FAILURE_BAD_PARAMETERS);
+                            }
                         } else {
-                            clientInfo.onResolveServiceFailed(
-                                    clientId, NsdManager.FAILURE_INTERNAL_ERROR);
+                            if (netId != NETID_UNSET && serviceHost != null) {
+                                clientInfo.mResolvedService.setHost(serviceHost);
+                                setServiceNetworkForCallback(clientInfo.mResolvedService,
+                                        netId, info.interfaceIdx);
+                                clientInfo.onResolveServiceSucceeded(
+                                        clientId, clientInfo.mResolvedService);
+                            } else {
+                                clientInfo.onResolveServiceFailed(
+                                        clientId, NsdManager.FAILURE_INTERNAL_ERROR);
+                            }
+                            stopGetAddrInfo(id);
+                            removeRequestMap(clientId, id, clientInfo);
+                            clientInfo.mResolvedService = null;
                         }
-                        stopGetAddrInfo(id);
-                        removeRequestMap(clientId, id, clientInfo);
-                        clientInfo.mResolvedService = null;
                         break;
                     }
                     default:
@@ -1005,18 +1216,32 @@
         mNsdStateMachine.start();
         mMDnsManager = ctx.getSystemService(MDnsManager.class);
         mMDnsEventCallback = new MDnsEventCallback(mNsdStateMachine);
-        if (deps.isMdnsDiscoveryManagerEnabled(ctx)) {
+
+        final boolean discoveryManagerEnabled = deps.isMdnsDiscoveryManagerEnabled(ctx);
+        final boolean advertiserEnabled = deps.isMdnsAdvertiserEnabled(ctx);
+        if (discoveryManagerEnabled || advertiserEnabled) {
             mMdnsSocketProvider = deps.makeMdnsSocketProvider(ctx, handler.getLooper());
+        } else {
+            mMdnsSocketProvider = null;
+        }
+
+        if (discoveryManagerEnabled) {
             mMdnsSocketClient =
                     new MdnsMultinetworkSocketClient(handler.getLooper(), mMdnsSocketProvider);
             mMdnsDiscoveryManager =
                     deps.makeMdnsDiscoveryManager(new ExecutorProvider(), mMdnsSocketClient);
             handler.post(() -> mMdnsSocketClient.setCallback(mMdnsDiscoveryManager));
         } else {
-            mMdnsSocketProvider = null;
             mMdnsSocketClient = null;
             mMdnsDiscoveryManager = null;
         }
+
+        if (advertiserEnabled) {
+            mAdvertiser = deps.makeMdnsAdvertiser(handler.getLooper(), mMdnsSocketProvider,
+                    new AdvertiserCallback());
+        } else {
+            mAdvertiser = null;
+        }
     }
 
     /**
@@ -1025,10 +1250,10 @@
     @VisibleForTesting
     public static class Dependencies {
         /**
-         * Check whether or not MdnsDiscoveryManager feature is enabled.
+         * Check whether the MdnsDiscoveryManager feature is enabled.
          *
          * @param context The global context information about an app environment.
-         * @return true if MdnsDiscoveryManager feature is enabled.
+         * @return true if the MdnsDiscoveryManager feature is enabled.
          */
         public boolean isMdnsDiscoveryManagerEnabled(Context context) {
             return DeviceConfigUtils.isFeatureEnabled(context, NAMESPACE_CONNECTIVITY,
@@ -1036,6 +1261,17 @@
         }
 
         /**
+         * Check whether the MdnsAdvertiser feature is enabled.
+         *
+         * @param context The global context information about an app environment.
+         * @return true if the MdnsAdvertiser feature is enabled.
+         */
+        public boolean isMdnsAdvertiserEnabled(Context context) {
+            return DeviceConfigUtils.isFeatureEnabled(context, NAMESPACE_CONNECTIVITY,
+                    MDNS_ADVERTISER_VERSION, false /* defaultEnabled */);
+        }
+
+        /**
          * @see MdnsDiscoveryManager
          */
         public MdnsDiscoveryManager makeMdnsDiscoveryManager(
@@ -1044,6 +1280,15 @@
         }
 
         /**
+         * @see MdnsAdvertiser
+         */
+        public MdnsAdvertiser makeMdnsAdvertiser(
+                @NonNull Looper looper, @NonNull MdnsSocketProvider socketProvider,
+                @NonNull MdnsAdvertiser.AdvertiserCallback cb) {
+            return new MdnsAdvertiser(looper, socketProvider, cb);
+        }
+
+        /**
          * @see MdnsSocketProvider
          */
         public MdnsSocketProvider makeMdnsSocketProvider(Context context, Looper looper) {
@@ -1101,6 +1346,49 @@
         }
     }
 
+    private class AdvertiserCallback implements MdnsAdvertiser.AdvertiserCallback {
+        @Override
+        public void onRegisterServiceSucceeded(int serviceId, NsdServiceInfo registeredInfo) {
+            final ClientInfo clientInfo = getClientInfoOrLog(serviceId);
+            if (clientInfo == null) return;
+
+            final int clientId = getClientIdOrLog(clientInfo, serviceId);
+            if (clientId < 0) return;
+
+            // onRegisterServiceSucceeded only has the service name in its info. This aligns with
+            // historical behavior.
+            final NsdServiceInfo cbInfo = new NsdServiceInfo(registeredInfo.getServiceName(), null);
+            clientInfo.onRegisterServiceSucceeded(clientId, cbInfo);
+        }
+
+        @Override
+        public void onRegisterServiceFailed(int serviceId, int errorCode) {
+            final ClientInfo clientInfo = getClientInfoOrLog(serviceId);
+            if (clientInfo == null) return;
+
+            final int clientId = getClientIdOrLog(clientInfo, serviceId);
+            if (clientId < 0) return;
+
+            clientInfo.onRegisterServiceFailed(clientId, errorCode);
+        }
+
+        private ClientInfo getClientInfoOrLog(int serviceId) {
+            final ClientInfo clientInfo = mIdToClientInfoMap.get(serviceId);
+            if (clientInfo == null) {
+                Log.e(TAG, String.format("Callback for service %d has no client", serviceId));
+            }
+            return clientInfo;
+        }
+
+        private int getClientIdOrLog(@NonNull ClientInfo info, int serviceId) {
+            final int clientId = info.getClientId(serviceId);
+            if (clientId < 0) {
+                Log.e(TAG, String.format("Client ID not found for service %d", serviceId));
+            }
+            return clientId;
+        }
+    }
+
     @Override
     public INsdServiceConnector connect(INsdManagerCallback cb) {
         mContext.enforceCallingOrSelfPermission(android.Manifest.permission.INTERNET, "NsdService");
@@ -1156,6 +1444,26 @@
         }
 
         @Override
+        public void stopResolution(int listenerKey) {
+            mNsdStateMachine.sendMessage(mNsdStateMachine.obtainMessage(
+                    NsdManager.STOP_RESOLUTION, 0, listenerKey, new ListenerArgs(this, null)));
+        }
+
+        @Override
+        public void registerServiceInfoCallback(int listenerKey, NsdServiceInfo serviceInfo) {
+            mNsdStateMachine.sendMessage(mNsdStateMachine.obtainMessage(
+                    NsdManager.REGISTER_SERVICE_CALLBACK, 0, listenerKey,
+                    new ListenerArgs(this, serviceInfo)));
+        }
+
+        @Override
+        public void unregisterServiceInfoCallback(int listenerKey) {
+            mNsdStateMachine.sendMessage(mNsdStateMachine.obtainMessage(
+                    NsdManager.UNREGISTER_SERVICE_CALLBACK, 0, listenerKey,
+                    new ListenerArgs(this, null)));
+        }
+
+        @Override
         public void startDaemon() {
             mNsdStateMachine.sendMessage(mNsdStateMachine.obtainMessage(
                     NsdManager.DAEMON_STARTUP, new ListenerArgs(this, null)));
@@ -1316,6 +1624,11 @@
         // The target SDK of this client < Build.VERSION_CODES.S
         private boolean mIsLegacy = false;
 
+        /*** The service that is registered to listen to its updates */
+        private NsdServiceInfo mRegisteredService;
+        /*** The client id that listen to updates */
+        private int mClientIdForServiceUpdates;
+
         private ClientInfo(INsdManagerCallback cb) {
             mCb = cb;
             if (DBG) Log.d(TAG, "New client");
@@ -1364,7 +1677,11 @@
                         stopResolveService(globalId);
                         break;
                     case NsdManager.REGISTER_SERVICE:
-                        unregisterService(globalId);
+                        if (mAdvertiser != null) {
+                            mAdvertiser.removeService(globalId);
+                        } else {
+                            unregisterService(globalId);
+                        }
                         break;
                     default:
                         break;
@@ -1393,6 +1710,18 @@
             return mClientIds.keyAt(idx);
         }
 
+        private void maybeNotifyRegisteredServiceLost(@NonNull NsdServiceInfo info) {
+            if (mRegisteredService == null) return;
+            if (!Objects.equals(mRegisteredService.getServiceName(), info.getServiceName())) return;
+            // Resolved services have a leading dot appended at the beginning of their type, but in
+            // discovered info it's at the end
+            if (!Objects.equals(
+                    mRegisteredService.getServiceType() + ".", "." + info.getServiceType())) {
+                return;
+            }
+            onServiceUpdatedLost(mClientIdForServiceUpdates);
+        }
+
         void onDiscoverServicesStarted(int listenerKey, NsdServiceInfo info) {
             try {
                 mCb.onDiscoverServicesStarted(listenerKey, info);
@@ -1488,5 +1817,53 @@
                 Log.e(TAG, "Error calling onResolveServiceSucceeded", e);
             }
         }
+
+        void onStopResolutionFailed(int listenerKey, int error) {
+            try {
+                mCb.onStopResolutionFailed(listenerKey, error);
+            } catch (RemoteException e) {
+                Log.e(TAG, "Error calling onStopResolutionFailed", e);
+            }
+        }
+
+        void onStopResolutionSucceeded(int listenerKey) {
+            try {
+                mCb.onStopResolutionSucceeded(listenerKey);
+            } catch (RemoteException e) {
+                Log.e(TAG, "Error calling onStopResolutionSucceeded", e);
+            }
+        }
+
+        void onServiceInfoCallbackRegistrationFailed(int listenerKey, int error) {
+            try {
+                mCb.onServiceInfoCallbackRegistrationFailed(listenerKey, error);
+            } catch (RemoteException e) {
+                Log.e(TAG, "Error calling onServiceInfoCallbackRegistrationFailed", e);
+            }
+        }
+
+        void onServiceUpdated(int listenerKey, NsdServiceInfo info) {
+            try {
+                mCb.onServiceUpdated(listenerKey, info);
+            } catch (RemoteException e) {
+                Log.e(TAG, "Error calling onServiceUpdated", e);
+            }
+        }
+
+        void onServiceUpdatedLost(int listenerKey) {
+            try {
+                mCb.onServiceUpdatedLost(listenerKey);
+            } catch (RemoteException e) {
+                Log.e(TAG, "Error calling onServiceUpdatedLost", e);
+            }
+        }
+
+        void onServiceInfoCallbackUnregistered(int listenerKey) {
+            try {
+                mCb.onServiceInfoCallbackUnregistered(listenerKey);
+            } catch (RemoteException e) {
+                Log.e(TAG, "Error calling onServiceInfoCallbackUnregistered", e);
+            }
+        }
     }
 }
diff --git a/service-t/src/com/android/server/mdns/MdnsInterfaceAdvertiser.java b/service-t/src/com/android/server/mdns/MdnsInterfaceAdvertiser.java
index a14b5ad..c616e01 100644
--- a/service-t/src/com/android/server/mdns/MdnsInterfaceAdvertiser.java
+++ b/service-t/src/com/android/server/mdns/MdnsInterfaceAdvertiser.java
@@ -278,14 +278,23 @@
      * Reset a service to the probing state due to a conflict found on the network.
      */
     public void restartProbingForConflict(int serviceId) {
-        // TODO: implement
+        final MdnsProber.ProbingInfo probingInfo = mRecordRepository.setServiceProbing(serviceId);
+        if (probingInfo == null) return;
+
+        mProber.restartForConflict(probingInfo);
     }
 
     /**
      * Rename a service following a conflict found on the network, and restart probing.
+     *
+     * If the service was not registered on this {@link MdnsInterfaceAdvertiser}, this is a no-op.
      */
     public void renameServiceForConflict(int serviceId, NsdServiceInfo newInfo) {
-        // TODO: implement
+        final MdnsProber.ProbingInfo probingInfo = mRecordRepository.renameServiceForConflict(
+                serviceId, newInfo);
+        if (probingInfo == null) return;
+
+        mProber.restartForConflict(probingInfo);
     }
 
     /**
@@ -319,8 +328,15 @@
                             + packet.additionalRecords.size() + " additional from " + src);
         }
 
-        final MdnsRecordRepository.ReplyInfo answers =
-                mRecordRepository.getReply(packet, src);
+        for (int conflictServiceId : mRecordRepository.getConflictingServices(packet)) {
+            mCbHandler.post(() -> mCb.onServiceConflict(this, conflictServiceId));
+        }
+
+        // Even in case of conflict, add replies for other services. But in general conflicts would
+        // happen when the incoming packet has answer records (not a question), so there will be no
+        // answer. One exception is simultaneous probe tiebreaking (rfc6762 8.2), in which case the
+        // conflicting service is still probing and won't reply either.
+        final MdnsRecordRepository.ReplyInfo answers = mRecordRepository.getReply(packet, src);
 
         if (answers == null) return;
         mReplySender.queueReply(answers);
diff --git a/service-t/src/com/android/server/mdns/MdnsProber.java b/service-t/src/com/android/server/mdns/MdnsProber.java
index 2cd9148..669b323 100644
--- a/service-t/src/com/android/server/mdns/MdnsProber.java
+++ b/service-t/src/com/android/server/mdns/MdnsProber.java
@@ -33,13 +33,13 @@
  * TODO: implement receiving replies and handling conflicts.
  */
 public class MdnsProber extends MdnsPacketRepeater<MdnsProber.ProbingInfo> {
+    private static final long CONFLICT_RETRY_DELAY_MS = 5_000L;
     @NonNull
     private final String mLogTag;
 
     public MdnsProber(@NonNull String interfaceTag, @NonNull Looper looper,
             @NonNull MdnsReplySender replySender,
             @NonNull PacketRepeaterCallback<ProbingInfo> cb) {
-        // 3 packets as per https://datatracker.ietf.org/doc/html/rfc6762#section-8.1
         super(looper, replySender, cb);
         mLogTag = MdnsProber.class.getSimpleName() + "/" + interfaceTag;
     }
@@ -140,4 +140,18 @@
     private void startProbing(@NonNull ProbingInfo info, long delay) {
         startSending(info.getServiceId(), info, delay);
     }
+
+    /**
+     * Restart probing with new service info as a conflict was found.
+     */
+    public void restartForConflict(@NonNull ProbingInfo newInfo) {
+        stop(newInfo.getServiceId());
+
+        /* RFC 6762 8.1: "If fifteen conflicts occur within any ten-second period, then the host
+        MUST wait at least five seconds before each successive additional probe attempt. [...]
+        For very simple devices, a valid way to comply with this requirement is to always wait
+        five seconds after any failed probe attempt before trying again. */
+        // TODO: count 15 conflicts in 10s instead of waiting for 5s every time
+        startProbing(newInfo, CONFLICT_RETRY_DELAY_MS);
+    }
 }
diff --git a/service-t/src/com/android/server/mdns/MdnsRecordRepository.java b/service-t/src/com/android/server/mdns/MdnsRecordRepository.java
index 4b2f553..e975ab4 100644
--- a/service-t/src/com/android/server/mdns/MdnsRecordRepository.java
+++ b/service-t/src/com/android/server/mdns/MdnsRecordRepository.java
@@ -43,6 +43,7 @@
 import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
+import java.util.Objects;
 import java.util.Random;
 import java.util.Set;
 import java.util.TreeMap;
@@ -721,6 +722,55 @@
     }
 
     /**
+     * Get the service IDs of services conflicting with a received packet.
+     */
+    public Set<Integer> getConflictingServices(MdnsPacket packet) {
+        // Avoid allocating a new set for each incoming packet: use an empty set by default.
+        Set<Integer> conflicting = Collections.emptySet();
+        for (MdnsRecord record : packet.answers) {
+            for (int i = 0; i < mServices.size(); i++) {
+                final ServiceRegistration registration = mServices.valueAt(i);
+                if (registration.exiting) continue;
+
+                // Only look for conflicts in service name, as a different service name can be used
+                // if there is a conflict, but there is nothing actionable if any other conflict
+                // happens. In fact probing is only done for the service name in the SRV record.
+                // This means only SRV and TXT records need to be checked.
+                final RecordInfo<MdnsServiceRecord> srvRecord = registration.srvRecord;
+                if (!Arrays.equals(record.getName(), srvRecord.record.getName())) continue;
+
+                // As per RFC6762 9., it's fine if the "conflict" is an identical record with same
+                // data.
+                if (record instanceof MdnsServiceRecord) {
+                    final MdnsServiceRecord local = srvRecord.record;
+                    final MdnsServiceRecord other = (MdnsServiceRecord) record;
+                    // Note "equals" does not consider TTL or receipt time, as intended here
+                    if (Objects.equals(local, other)) {
+                        continue;
+                    }
+                }
+
+                if (record instanceof MdnsTextRecord) {
+                    final MdnsTextRecord local = registration.txtRecord.record;
+                    final MdnsTextRecord other = (MdnsTextRecord) record;
+                    if (Objects.equals(local, other)) {
+                        continue;
+                    }
+                }
+
+                if (conflicting.size() == 0) {
+                    // Conflict was found: use a mutable set
+                    conflicting = new ArraySet<>();
+                }
+                final int serviceId = mServices.keyAt(i);
+                conflicting.add(serviceId);
+            }
+        }
+
+        return conflicting;
+    }
+
+    /**
      * (Re)set a service to the probing state.
      * @return The {@link MdnsProber.ProbingInfo} to send for probing.
      */
@@ -754,6 +804,21 @@
     }
 
     /**
+     * Rename a service to the newly provided info, following a conflict.
+     *
+     * If the specified service does not exist, this returns null.
+     */
+    @Nullable
+    public MdnsProber.ProbingInfo renameServiceForConflict(int serviceId, NsdServiceInfo newInfo) {
+        if (!mServices.contains(serviceId)) return null;
+
+        final ServiceRegistration newService = new ServiceRegistration(
+                mDeviceHostname, newInfo);
+        mServices.put(serviceId, newService);
+        return makeProbingInfo(serviceId, newService.srvRecord.record);
+    }
+
+    /**
      * Called when {@link MdnsAdvertiser} sent an advertisement for the given service.
      */
     public void onAdvertisementSent(int serviceId) {
diff --git a/service-t/src/com/android/server/net/NetworkStatsService.java b/service-t/src/com/android/server/net/NetworkStatsService.java
index 5852a30..4eeaf6b 100644
--- a/service-t/src/com/android/server/net/NetworkStatsService.java
+++ b/service-t/src/com/android/server/net/NetworkStatsService.java
@@ -3269,4 +3269,7 @@
     private static native long nativeGetTotalStat(int type);
     private static native long nativeGetIfaceStat(String iface, int type);
     private static native long nativeGetUidStat(int uid, int type);
+
+    /** Initializes and registers the Perfetto Network Trace data source */
+    public static native void nativeInitNetworkTracing();
 }
diff --git a/service/ServiceConnectivityResources/res/values-eu/strings.xml b/service/ServiceConnectivityResources/res/values-eu/strings.xml
index 9b39fd3..13f9eb4 100644
--- a/service/ServiceConnectivityResources/res/values-eu/strings.xml
+++ b/service/ServiceConnectivityResources/res/values-eu/strings.xml
@@ -36,7 +36,7 @@
     <item msgid="3004933964374161223">"datu-konexioa"</item>
     <item msgid="5624324321165953608">"Wifia"</item>
     <item msgid="5667906231066981731">"Bluetootha"</item>
-    <item msgid="346574747471703768">"Ethernet-a"</item>
+    <item msgid="346574747471703768">"Etherneta"</item>
     <item msgid="5734728378097476003">"VPNa"</item>
   </string-array>
     <string name="network_switch_type_name_unknown" msgid="5116448402191972082">"sare mota ezezaguna"</string>
diff --git a/service/src/com/android/server/ConnectivityService.java b/service/src/com/android/server/ConnectivityService.java
index a7e6a2e..f5c6fb7 100755
--- a/service/src/com/android/server/ConnectivityService.java
+++ b/service/src/com/android/server/ConnectivityService.java
@@ -269,6 +269,7 @@
 import com.android.networkstack.apishim.common.BroadcastOptionsShim;
 import com.android.networkstack.apishim.common.UnsupportedApiLevelException;
 import com.android.server.connectivity.AutodestructReference;
+import com.android.server.connectivity.AutomaticOnOffKeepaliveTracker;
 import com.android.server.connectivity.CarrierPrivilegeAuthenticator;
 import com.android.server.connectivity.ClatCoordinator;
 import com.android.server.connectivity.ConnectivityFlags;
@@ -843,7 +844,7 @@
 
     private final LocationPermissionChecker mLocationPermissionChecker;
 
-    private final KeepaliveTracker mKeepaliveTracker;
+    private final AutomaticOnOffKeepaliveTracker mKeepaliveTracker;
     private final QosCallbackTracker mQosCallbackTracker;
     private final NetworkNotificationManager mNotifier;
     private final LingerMonitor mLingerMonitor;
@@ -1565,7 +1566,7 @@
         mSettingsObserver = new SettingsObserver(mContext, mHandler);
         registerSettingsCallbacks();
 
-        mKeepaliveTracker = new KeepaliveTracker(mContext, mHandler);
+        mKeepaliveTracker = new AutomaticOnOffKeepaliveTracker(mContext, mHandler);
         mNotifier = new NetworkNotificationManager(mContext, mTelephonyManager);
         mQosCallbackTracker = new QosCallbackTracker(mHandler, mNetworkRequestCounter);
 
@@ -5544,6 +5545,33 @@
                     mKeepaliveTracker.handleStartKeepalive(msg);
                     break;
                 }
+                case NetworkAgent.CMD_MONITOR_AUTOMATIC_KEEPALIVE: {
+                    final Network network = (Network) msg.obj;
+                    final int slot = msg.arg1;
+
+                    boolean networkFound = false;
+                    final ArrayList<NetworkAgentInfo> vpnsRunningOnThisNetwork = new ArrayList<>();
+                    for (NetworkAgentInfo n : mNetworkAgentInfos) {
+                        if (n.network.equals(network)) networkFound = true;
+                        if (n.isVPN() && n.everConnected() && hasUnderlyingNetwork(n, network)) {
+                            vpnsRunningOnThisNetwork.add(n);
+                        }
+                    }
+
+                    // If the network no longer exists, then the keepalive should have been
+                    // cleaned up already. There is no point trying to resume keepalives.
+                    if (!networkFound) return;
+
+                    if (!vpnsRunningOnThisNetwork.isEmpty()) {
+                        mKeepaliveTracker.handleMonitorAutomaticKeepalive(network, slot,
+                                // TODO: check all the VPNs running on top of this network
+                                vpnsRunningOnThisNetwork.get(0).network.netId);
+                    } else {
+                        // If no VPN, then make sure the keepalive is running.
+                        mKeepaliveTracker.handleMaybeResumeKeepalive(network, slot);
+                    }
+                    break;
+                }
                 // Sent by KeepaliveTracker to process an app request on the state machine thread.
                 case NetworkAgent.CMD_STOP_SOCKET_KEEPALIVE: {
                     NetworkAgentInfo nai = getNetworkAgentInfoForNetwork((Network) msg.obj);
@@ -6217,9 +6245,7 @@
         if (mOemNetworkPreferences.getNetworkPreferences().size() > 0) {
             handleSetOemNetworkPreference(mOemNetworkPreferences, null);
         }
-        if (!mProfileNetworkPreferences.isEmpty()) {
-            updateProfileAllowedNetworks();
-        }
+        updateProfileAllowedNetworks();
     }
 
     private void onUserRemoved(@NonNull final UserHandle user) {
@@ -9788,20 +9814,23 @@
         enforceKeepalivePermission();
         mKeepaliveTracker.startNattKeepalive(
                 getNetworkAgentInfoForNetwork(network), null /* fd */,
-                intervalSeconds, cb,
-                srcAddr, srcPort, dstAddr, NattSocketKeepalive.NATT_PORT);
+                intervalSeconds, cb, srcAddr, srcPort, dstAddr, NattSocketKeepalive.NATT_PORT,
+                // Keep behavior of the deprecated method as it is. Set automaticOnOffKeepalives to
+                // false because there is no way and no plan to configure automaticOnOffKeepalives
+                // in this deprecated method.
+                false /* automaticOnOffKeepalives */);
     }
 
     @Override
     public void startNattKeepaliveWithFd(Network network, ParcelFileDescriptor pfd, int resourceId,
             int intervalSeconds, ISocketKeepaliveCallback cb, String srcAddr,
-            String dstAddr) {
+            String dstAddr, boolean automaticOnOffKeepalives) {
         try {
             final FileDescriptor fd = pfd.getFileDescriptor();
             mKeepaliveTracker.startNattKeepalive(
                     getNetworkAgentInfoForNetwork(network), fd, resourceId,
                     intervalSeconds, cb,
-                    srcAddr, dstAddr, NattSocketKeepalive.NATT_PORT);
+                    srcAddr, dstAddr, NattSocketKeepalive.NATT_PORT, automaticOnOffKeepalives);
         } finally {
             // FileDescriptors coming from AIDL calls must be manually closed to prevent leaks.
             // startNattKeepalive calls Os.dup(fd) before returning, so we can close immediately.
diff --git a/service/src/com/android/server/connectivity/AutomaticOnOffKeepaliveTracker.java b/service/src/com/android/server/connectivity/AutomaticOnOffKeepaliveTracker.java
new file mode 100644
index 0000000..27be545
--- /dev/null
+++ b/service/src/com/android/server/connectivity/AutomaticOnOffKeepaliveTracker.java
@@ -0,0 +1,691 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.connectivity;
+
+import static android.net.NetworkAgent.CMD_START_SOCKET_KEEPALIVE;
+import static android.net.SocketKeepalive.ERROR_INVALID_SOCKET;
+import static android.net.SocketKeepalive.SUCCESS;
+import static android.provider.DeviceConfig.NAMESPACE_CONNECTIVITY;
+import static android.system.OsConstants.AF_INET;
+import static android.system.OsConstants.AF_INET6;
+import static android.system.OsConstants.SOL_SOCKET;
+import static android.system.OsConstants.SO_SNDTIMEO;
+
+import static com.android.net.module.util.netlink.NetlinkConstants.NLMSG_DONE;
+import static com.android.net.module.util.netlink.NetlinkConstants.SOCKDIAG_MSG_HEADER_SIZE;
+import static com.android.net.module.util.netlink.NetlinkConstants.SOCK_DIAG_BY_FAMILY;
+import static com.android.net.module.util.netlink.NetlinkUtils.IO_TIMEOUT_MS;
+
+import android.annotation.IntDef;
+import android.annotation.NonNull;
+import android.annotation.Nullable;
+import android.app.AlarmManager;
+import android.app.PendingIntent;
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.net.INetd;
+import android.net.ISocketKeepaliveCallback;
+import android.net.MarkMaskParcel;
+import android.net.Network;
+import android.net.NetworkAgent;
+import android.net.SocketKeepalive;
+import android.net.SocketKeepalive.InvalidSocketException;
+import android.os.FileUtils;
+import android.os.Handler;
+import android.os.IBinder;
+import android.os.Message;
+import android.os.RemoteException;
+import android.os.SystemClock;
+import android.system.ErrnoException;
+import android.system.Os;
+import android.system.StructTimeval;
+import android.util.Log;
+import android.util.SparseArray;
+
+import com.android.internal.annotations.VisibleForTesting;
+import com.android.internal.util.IndentingPrintWriter;
+import com.android.modules.utils.build.SdkLevel;
+import com.android.net.module.util.CollectionUtils;
+import com.android.net.module.util.DeviceConfigUtils;
+import com.android.net.module.util.HexDump;
+import com.android.net.module.util.SocketUtils;
+import com.android.net.module.util.netlink.InetDiagMessage;
+import com.android.net.module.util.netlink.NetlinkUtils;
+import com.android.net.module.util.netlink.StructNlAttr;
+
+import java.io.FileDescriptor;
+import java.io.InterruptedIOException;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.net.SocketException;
+import java.nio.BufferUnderflowException;
+import java.nio.ByteBuffer;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Objects;
+
+/**
+ * Manages automatic on/off socket keepalive requests.
+ *
+ * Provides methods to stop and start automatic keepalive requests, and keeps track of keepalives
+ * across all networks. For non-automatic on/off keepalive request, this class just forwards the
+ * requests to KeepaliveTracker. This class is tightly coupled to ConnectivityService. It is not
+ * thread-safe and its handle* methods must be called only from the ConnectivityService handler
+ * thread.
+ */
+public class AutomaticOnOffKeepaliveTracker {
+    private static final String TAG = "AutomaticOnOffKeepaliveTracker";
+    private static final int[] ADDRESS_FAMILIES = new int[] {AF_INET6, AF_INET};
+    private static final String ACTION_TCP_POLLING_ALARM =
+            "com.android.server.connectivity.KeepaliveTracker.TCP_POLLING_ALARM";
+    private static final String EXTRA_NETWORK = "network_id";
+    private static final String EXTRA_SLOT = "slot";
+    private static final long DEFAULT_TCP_POLLING_INTERVAL_MS = 120_000L;
+    private static final String AUTOMATIC_ON_OFF_KEEPALIVE_VERSION =
+            "automatic_on_off_keepalive_version";
+    /**
+     * States for {@code #AutomaticOnOffKeepalive}.
+     *
+     * A new AutomaticOnOffKeepalive starts with STATE_ENABLED. The system will monitor
+     * the TCP sockets on VPN networks running on top of the specified network, and turn off
+     * keepalive if there is no TCP socket any of the VPN networks. Conversely, it will turn
+     * keepalive back on if any TCP socket is open on any of the VPN networks.
+     *
+     * When there is no TCP socket on any of the VPN networks, the state becomes STATE_SUSPENDED.
+     * The {@link KeepaliveTracker.KeepaliveInfo} object is kept to remember the parameters so it
+     * is possible to resume keepalive later with the same parameters.
+     *
+     * When the system detects some TCP socket is open on one of the VPNs while in STATE_SUSPENDED,
+     * this AutomaticOnOffKeepalive goes to STATE_ENABLED again.
+     *
+     * When finishing keepalive, this object is deleted.
+     */
+    private static final int STATE_ENABLED = 0;
+    private static final int STATE_SUSPENDED = 1;
+    @Retention(RetentionPolicy.SOURCE)
+    @IntDef(prefix = { "STATE_" }, value = {
+            STATE_ENABLED,
+            STATE_SUSPENDED
+    })
+    private @interface AutomaticOnOffState {}
+
+    @NonNull
+    private final Handler mConnectivityServiceHandler;
+    @NonNull
+    private final KeepaliveTracker mKeepaliveTracker;
+    @NonNull
+    private final Context mContext;
+    @NonNull
+    private final AlarmManager mAlarmManager;
+
+    /**
+     * The {@code inetDiagReqV2} messages for different IP family.
+     *
+     *   Key: Ip family type.
+     * Value: Bytes array represent the {@code inetDiagReqV2}.
+     *
+     * This should only be accessed in the connectivity service handler thread.
+     */
+    private final SparseArray<byte[]> mSockDiagMsg = new SparseArray<>();
+    private final Dependencies mDependencies;
+    private final INetd mNetd;
+    /**
+     * Keeps track of automatic on/off keepalive requests.
+     * This should be only updated in ConnectivityService handler thread.
+     */
+    private final ArrayList<AutomaticOnOffKeepalive> mAutomaticOnOffKeepalives = new ArrayList<>();
+
+    private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
+        @Override
+        public void onReceive(Context context, Intent intent) {
+            if (ACTION_TCP_POLLING_ALARM.equals(intent.getAction())) {
+                Log.d(TAG, "Received TCP polling intent");
+                final Network network = intent.getParcelableExtra(EXTRA_NETWORK);
+                final int slot = intent.getIntExtra(EXTRA_SLOT, -1);
+                mConnectivityServiceHandler.obtainMessage(
+                        NetworkAgent.CMD_MONITOR_AUTOMATIC_KEEPALIVE,
+                        slot, 0 , network).sendToTarget();
+            }
+        }
+    };
+
+    private static class AutomaticOnOffKeepalive {
+        @NonNull
+        private final KeepaliveTracker.KeepaliveInfo mKi;
+        @NonNull
+        private final FileDescriptor mFd;
+        @NonNull
+        private final PendingIntent mTcpPollingAlarm;
+        private final int mSlot;
+        @AutomaticOnOffState
+        private int mAutomaticOnOffState = STATE_ENABLED;
+
+        AutomaticOnOffKeepalive(@NonNull KeepaliveTracker.KeepaliveInfo ki,
+                @NonNull Context context) throws InvalidSocketException {
+            this.mKi = Objects.requireNonNull(ki);
+            // A null fd is acceptable in KeepaliveInfo for backward compatibility of
+            // PacketKeepalive API, but it should not happen here because legacy API cannot setup
+            // automatic keepalive.
+            Objects.requireNonNull(ki.mFd);
+
+            // Get the slot from keepalive because the slot information may be missing when the
+            // keepalive is stopped.
+            this.mSlot = ki.getSlot();
+            try {
+                this.mFd = Os.dup(ki.mFd);
+            } catch (ErrnoException e) {
+                Log.e(TAG, "Cannot dup fd: ", e);
+                throw new InvalidSocketException(ERROR_INVALID_SOCKET, e);
+            }
+            mTcpPollingAlarm = createTcpPollingAlarmIntent(
+                    context, ki.getNai().network(), ki.getSlot());
+        }
+
+        public boolean match(Network network, int slot) {
+            return this.mKi.getNai().network().equals(network) && this.mSlot == slot;
+        }
+
+        private static PendingIntent createTcpPollingAlarmIntent(@NonNull Context context,
+                @NonNull Network network, int slot) {
+            final Intent intent = new Intent(ACTION_TCP_POLLING_ALARM);
+            intent.putExtra(EXTRA_NETWORK, network);
+            intent.putExtra(EXTRA_SLOT, slot);
+            return PendingIntent.getBroadcast(
+                    context, 0 /* requestCode */, intent, PendingIntent.FLAG_IMMUTABLE);
+        }
+    }
+
+    public AutomaticOnOffKeepaliveTracker(@NonNull Context context, @NonNull Handler handler) {
+        this(context, handler, new Dependencies(context));
+    }
+
+    @VisibleForTesting
+    public AutomaticOnOffKeepaliveTracker(@NonNull Context context, @NonNull Handler handler,
+            @NonNull Dependencies dependencies) {
+        mContext = Objects.requireNonNull(context);
+        mDependencies = Objects.requireNonNull(dependencies);
+        mConnectivityServiceHandler = Objects.requireNonNull(handler);
+        mNetd = mDependencies.getNetd();
+        mKeepaliveTracker = mDependencies.newKeepaliveTracker(
+                mContext, mConnectivityServiceHandler);
+
+        if (SdkLevel.isAtLeastU()) {
+            mContext.registerReceiver(mReceiver, new IntentFilter(ACTION_TCP_POLLING_ALARM),
+                    null, handler);
+        }
+        mAlarmManager = mContext.getSystemService(AlarmManager.class);
+    }
+
+    private void startTcpPollingAlarm(@NonNull PendingIntent alarm) {
+        final long triggerAtMillis =
+                SystemClock.elapsedRealtime() + DEFAULT_TCP_POLLING_INTERVAL_MS;
+        // Setup a non-wake up alarm.
+        mAlarmManager.setExact(AlarmManager.ELAPSED_REALTIME, triggerAtMillis, alarm);
+    }
+
+    /**
+     * Determine if any state transition is needed for the specific automatic keepalive.
+     */
+    public void handleMonitorAutomaticKeepalive(@NonNull Network network, int slot, int vpnNetId) {
+        final AutomaticOnOffKeepalive autoKi = findAutomaticOnOffKeepalive(network, slot);
+        // This may happen if the keepalive is removed by the app, and the alarm is fired at the
+        // same time.
+        if (autoKi == null) return;
+
+        handleMonitorTcpConnections(autoKi, vpnNetId);
+    }
+
+    /**
+     * Determine if disable or re-enable keepalive is needed or not based on TCP sockets status.
+     */
+    private void handleMonitorTcpConnections(@NonNull AutomaticOnOffKeepalive ki, int vpnNetId) {
+        if (!isAnyTcpSocketConnected(vpnNetId)) {
+            // No TCP socket exists. Stop keepalive if ENABLED, and remain SUSPENDED if currently
+            // SUSPENDED.
+            if (ki.mAutomaticOnOffState == STATE_ENABLED) {
+                ki.mAutomaticOnOffState = STATE_SUSPENDED;
+                handleSuspendKeepalive(ki.mKi.mNai, ki.mSlot, SUCCESS);
+            }
+        } else {
+            handleMaybeResumeKeepalive(ki);
+        }
+        // TODO: listen to socket status instead of periodically check.
+        startTcpPollingAlarm(ki.mTcpPollingAlarm);
+    }
+
+    /**
+     * Resume keepalive for this slot on this network, if it wasn't already resumed.
+     */
+    public void handleMaybeResumeKeepalive(@NonNull final Network network, final int slot) {
+        final AutomaticOnOffKeepalive autoKi = findAutomaticOnOffKeepalive(network, slot);
+        // This may happen if the keepalive is removed by the app, and the alarm is fired at
+        // the same time.
+        if (autoKi == null) return;
+        handleMaybeResumeKeepalive(autoKi);
+    }
+
+    private void handleMaybeResumeKeepalive(@NonNull AutomaticOnOffKeepalive autoKi) {
+        if (autoKi.mAutomaticOnOffState == STATE_ENABLED) return;
+        KeepaliveTracker.KeepaliveInfo newKi;
+        try {
+            // Get fd from AutomaticOnOffKeepalive since the fd in the original
+            // KeepaliveInfo should be closed.
+            newKi = autoKi.mKi.withFd(autoKi.mFd);
+        } catch (InvalidSocketException | IllegalArgumentException | SecurityException e) {
+            Log.e(TAG, "Fail to construct keepalive", e);
+            mKeepaliveTracker.notifyErrorCallback(autoKi.mKi.mCallback, ERROR_INVALID_SOCKET);
+            return;
+        }
+        autoKi.mAutomaticOnOffState = STATE_ENABLED;
+        handleResumeKeepalive(mConnectivityServiceHandler.obtainMessage(
+                NetworkAgent.CMD_START_SOCKET_KEEPALIVE,
+                autoKi.mAutomaticOnOffState, 0, newKi));
+    }
+
+    private int findAutomaticOnOffKeepaliveIndex(@NonNull Network network, int slot) {
+        ensureRunningOnHandlerThread();
+
+        int index = 0;
+        for (AutomaticOnOffKeepalive ki : mAutomaticOnOffKeepalives) {
+            if (ki.match(network, slot)) {
+                return index;
+            }
+            index++;
+        }
+        return -1;
+    }
+
+    @Nullable
+    private AutomaticOnOffKeepalive findAutomaticOnOffKeepalive(@NonNull Network network,
+            int slot) {
+        ensureRunningOnHandlerThread();
+
+        final int index = findAutomaticOnOffKeepaliveIndex(network, slot);
+        return (index >= 0) ? mAutomaticOnOffKeepalives.get(index) : null;
+    }
+
+    /**
+     * Handle keepalive events from lower layer.
+     *
+     * Forward to KeepaliveTracker.
+     */
+    public void handleEventSocketKeepalive(@NonNull NetworkAgentInfo nai, int slot, int reason) {
+        mKeepaliveTracker.handleEventSocketKeepalive(nai, slot, reason);
+    }
+
+    /**
+     * Handle stop all keepalives on the specific network.
+     */
+    public void handleStopAllKeepalives(NetworkAgentInfo nai, int reason) {
+        mKeepaliveTracker.handleStopAllKeepalives(nai, reason);
+        final List<AutomaticOnOffKeepalive> matches =
+                CollectionUtils.filter(mAutomaticOnOffKeepalives, it -> it.mKi.getNai() == nai);
+        for (final AutomaticOnOffKeepalive ki : matches) {
+            cleanupAutoOnOffKeepalive(ki);
+        }
+    }
+
+    /**
+     * Handle start keepalive contained within a message.
+     *
+     * The message is expected to contain a KeepaliveTracker.KeepaliveInfo.
+     */
+    public void handleStartKeepalive(Message message) {
+        mKeepaliveTracker.handleStartKeepalive(message);
+
+        // Add automatic on/off request into list to track its life cycle.
+        final boolean automaticOnOff = message.arg1 != 0
+                && mDependencies.isFeatureEnabled(AUTOMATIC_ON_OFF_KEEPALIVE_VERSION);
+        if (automaticOnOff) {
+            final KeepaliveTracker.KeepaliveInfo ki = (KeepaliveTracker.KeepaliveInfo) message.obj;
+            AutomaticOnOffKeepalive autoKi;
+            try {
+                // CAREFUL : mKeepaliveTracker.handleStartKeepalive will assign |ki.mSlot| after
+                // pulling |ki| from the message. The constructor below will read this member
+                // (through ki.getSlot()) and therefore actively relies on handleStartKeepalive
+                // having assigned this member before this is called.
+                // TODO : clean this up by assigning the slot at the start of this method instead
+                // and ideally removing the mSlot member from KeepaliveInfo.
+                autoKi = new AutomaticOnOffKeepalive(ki, mContext);
+            } catch (SocketKeepalive.InvalidSocketException | IllegalArgumentException e) {
+                Log.e(TAG, "Fail to construct keepalive", e);
+                mKeepaliveTracker.notifyErrorCallback(ki.mCallback, ERROR_INVALID_SOCKET);
+                return;
+            }
+            mAutomaticOnOffKeepalives.add(autoKi);
+            startTcpPollingAlarm(autoKi.mTcpPollingAlarm);
+        }
+    }
+
+    private void handleResumeKeepalive(Message message) {
+        mKeepaliveTracker.handleStartKeepalive(message);
+    }
+
+    private void handleSuspendKeepalive(NetworkAgentInfo nai, int slot, int reason) {
+        mKeepaliveTracker.handleStopKeepalive(nai, slot, reason);
+    }
+
+    /**
+     * Handle stop keepalives on the specific network with given slot.
+     */
+    public void handleStopKeepalive(NetworkAgentInfo nai, int slot, int reason) {
+        final AutomaticOnOffKeepalive autoKi = findAutomaticOnOffKeepalive(nai.network, slot);
+
+        // Let the original keepalive do the stop first, and then clean up the keepalive if it's an
+        // automatic keepalive.
+        if (autoKi == null || autoKi.mAutomaticOnOffState == STATE_ENABLED) {
+            mKeepaliveTracker.handleStopKeepalive(nai, slot, reason);
+        }
+
+        // Not an AutomaticOnOffKeepalive.
+        if (autoKi == null) return;
+
+        cleanupAutoOnOffKeepalive(autoKi);
+    }
+
+    private void cleanupAutoOnOffKeepalive(@NonNull final AutomaticOnOffKeepalive autoKi) {
+        ensureRunningOnHandlerThread();
+        mAlarmManager.cancel(autoKi.mTcpPollingAlarm);
+        // Close the duplicated fd that maintains the lifecycle of socket.
+        FileUtils.closeQuietly(autoKi.mFd);
+        mAutomaticOnOffKeepalives.remove(autoKi);
+    }
+
+    /**
+     * Called when requesting that keepalives be started on a IPsec NAT-T socket. See
+     * {@link android.net.SocketKeepalive}.
+     *
+     * Forward to KeepaliveTracker.
+     **/
+    public void startNattKeepalive(@Nullable NetworkAgentInfo nai,
+            @Nullable FileDescriptor fd,
+            int intervalSeconds,
+            @NonNull ISocketKeepaliveCallback cb,
+            @NonNull String srcAddrString,
+            int srcPort,
+            @NonNull String dstAddrString,
+            int dstPort, boolean automaticOnOffKeepalives) {
+        final KeepaliveTracker.KeepaliveInfo ki = mKeepaliveTracker.makeNattKeepaliveInfo(nai, fd,
+                intervalSeconds, cb, srcAddrString, srcPort, dstAddrString, dstPort);
+        if (null != ki) {
+            mConnectivityServiceHandler.obtainMessage(NetworkAgent.CMD_START_SOCKET_KEEPALIVE,
+                    // TODO : move ConnectivityService#encodeBool to a static lib.
+                    automaticOnOffKeepalives ? 1 : 0, 0, ki).sendToTarget();
+        }
+    }
+
+    /**
+     * Called when requesting that keepalives be started on a IPsec NAT-T socket. See
+     * {@link android.net.SocketKeepalive}.
+     *
+     * Forward to KeepaliveTracker.
+     **/
+    public void startNattKeepalive(@Nullable NetworkAgentInfo nai,
+            @Nullable FileDescriptor fd,
+            int resourceId,
+            int intervalSeconds,
+            @NonNull ISocketKeepaliveCallback cb,
+            @NonNull String srcAddrString,
+            @NonNull String dstAddrString,
+            int dstPort,
+            boolean automaticOnOffKeepalives) {
+        final KeepaliveTracker.KeepaliveInfo ki = mKeepaliveTracker.makeNattKeepaliveInfo(nai, fd,
+                resourceId, intervalSeconds, cb, srcAddrString, dstAddrString, dstPort);
+        if (null != ki) {
+            mConnectivityServiceHandler.obtainMessage(NetworkAgent.CMD_START_SOCKET_KEEPALIVE,
+                    // TODO : move ConnectivityService#encodeBool to a static lib.
+                    automaticOnOffKeepalives ? 1 : 0, 0, ki).sendToTarget();
+        }
+    }
+
+    /**
+     * Called by ConnectivityService to start TCP keepalive on a file descriptor.
+     *
+     * In order to offload keepalive for application correctly, sequence number, ack number and
+     * other fields are needed to form the keepalive packet. Thus, this function synchronously
+     * puts the socket into repair mode to get the necessary information. After the socket has been
+     * put into repair mode, the application cannot access the socket until reverted to normal.
+     * See {@link android.net.SocketKeepalive}.
+     *
+     * Forward to KeepaliveTracker.
+     **/
+    public void startTcpKeepalive(@Nullable NetworkAgentInfo nai,
+            @NonNull FileDescriptor fd,
+            int intervalSeconds,
+            @NonNull ISocketKeepaliveCallback cb) {
+        final KeepaliveTracker.KeepaliveInfo ki = mKeepaliveTracker.makeTcpKeepaliveInfo(nai, fd,
+                intervalSeconds, cb);
+        if (null != ki) {
+            mConnectivityServiceHandler.obtainMessage(CMD_START_SOCKET_KEEPALIVE, ki)
+                    .sendToTarget();
+        }
+    }
+
+    /**
+     * Dump AutomaticOnOffKeepaliveTracker state.
+     */
+    public void dump(IndentingPrintWriter pw) {
+        // TODO: Dump the necessary information for automatic on/off keepalive.
+        mKeepaliveTracker.dump(pw);
+    }
+
+    /**
+     * Check all keepalives on the network are still valid.
+     *
+     * Forward to KeepaliveTracker.
+     */
+    public void handleCheckKeepalivesStillValid(NetworkAgentInfo nai) {
+        mKeepaliveTracker.handleCheckKeepalivesStillValid(nai);
+    }
+
+    @VisibleForTesting
+    boolean isAnyTcpSocketConnected(int netId) {
+        FileDescriptor fd = null;
+
+        try {
+            fd = mDependencies.createConnectedNetlinkSocket();
+
+            // Get network mask
+            final MarkMaskParcel parcel = mNetd.getFwmarkForNetwork(netId);
+            final int networkMark = (parcel != null) ? parcel.mark : NetlinkUtils.UNKNOWN_MARK;
+            final int networkMask = (parcel != null) ? parcel.mask : NetlinkUtils.NULL_MASK;
+
+            // Send request for each IP family
+            for (final int family : ADDRESS_FAMILIES) {
+                if (isAnyTcpSocketConnectedForFamily(fd, family, networkMark, networkMask)) {
+                    return true;
+                }
+            }
+        } catch (ErrnoException | SocketException | InterruptedIOException | RemoteException e) {
+            Log.e(TAG, "Fail to get socket info via netlink.", e);
+        } finally {
+            SocketUtils.closeSocketQuietly(fd);
+        }
+
+        return false;
+    }
+
+    private boolean isAnyTcpSocketConnectedForFamily(FileDescriptor fd, int family, int networkMark,
+            int networkMask) throws ErrnoException, InterruptedIOException {
+        ensureRunningOnHandlerThread();
+        // Build SocketDiag messages and cache it.
+        if (mSockDiagMsg.get(family) == null) {
+            mSockDiagMsg.put(family, InetDiagMessage.buildInetDiagReqForAliveTcpSockets(family));
+        }
+        mDependencies.sendRequest(fd, mSockDiagMsg.get(family));
+
+        // Iteration limitation as a protection to avoid possible infinite loops.
+        // DEFAULT_RECV_BUFSIZE could read more than 20 sockets per time. Max iteration
+        // should be enough to go through reasonable TCP sockets in the device.
+        final int maxIteration = 100;
+        int parsingIteration = 0;
+        while (parsingIteration < maxIteration) {
+            final ByteBuffer bytes = mDependencies.recvSockDiagResponse(fd);
+
+            try {
+                while (NetlinkUtils.enoughBytesRemainForValidNlMsg(bytes)) {
+                    final int startPos = bytes.position();
+
+                    final int nlmsgLen = bytes.getInt();
+                    final int nlmsgType = bytes.getShort();
+                    if (isEndOfMessageOrError(nlmsgType)) return false;
+                    // TODO: Parse InetDiagMessage to get uid and dst address information to filter
+                    //  socket via NetlinkMessage.parse.
+
+                    // Skip the header to move to data part.
+                    bytes.position(startPos + SOCKDIAG_MSG_HEADER_SIZE);
+
+                    if (isTargetTcpSocket(bytes, nlmsgLen, networkMark, networkMask)) {
+                        return true;
+                    }
+                }
+            } catch (BufferUnderflowException e) {
+                // The exception happens in random place in either header position or any data
+                // position. Partial bytes from the middle of the byte buffer may not be enough to
+                // clarify, so print out the content before the error to possibly prevent printing
+                // the whole 8K buffer.
+                final int exceptionPos = bytes.position();
+                final String hex = HexDump.dumpHexString(bytes.array(), 0, exceptionPos);
+                Log.e(TAG, "Unexpected socket info parsing: " + hex, e);
+            }
+
+            parsingIteration++;
+        }
+        return false;
+    }
+
+    private boolean isEndOfMessageOrError(int nlmsgType) {
+        return nlmsgType == NLMSG_DONE || nlmsgType != SOCK_DIAG_BY_FAMILY;
+    }
+
+    private boolean isTargetTcpSocket(@NonNull ByteBuffer bytes, int nlmsgLen, int networkMark,
+            int networkMask) {
+        final int mark = readSocketDataAndReturnMark(bytes, nlmsgLen);
+        return (mark & networkMask) == networkMark;
+    }
+
+    private int readSocketDataAndReturnMark(@NonNull ByteBuffer bytes, int nlmsgLen) {
+        final int nextMsgOffset = bytes.position() + nlmsgLen - SOCKDIAG_MSG_HEADER_SIZE;
+        int mark = NetlinkUtils.INIT_MARK_VALUE;
+        // Get socket mark
+        // TODO: Add a parsing method in NetlinkMessage.parse to support this to skip the remaining
+        //  data.
+        while (bytes.position() < nextMsgOffset) {
+            final StructNlAttr nlattr = StructNlAttr.parse(bytes);
+            if (nlattr != null && nlattr.nla_type == NetlinkUtils.INET_DIAG_MARK) {
+                mark = nlattr.getValueAsInteger();
+            }
+        }
+        return mark;
+    }
+
+    private void ensureRunningOnHandlerThread() {
+        if (mConnectivityServiceHandler.getLooper().getThread() != Thread.currentThread()) {
+            throw new IllegalStateException(
+                    "Not running on handler thread: " + Thread.currentThread().getName());
+        }
+    }
+
+    /**
+     * Dependencies class for testing.
+     */
+    @VisibleForTesting
+    public static class Dependencies {
+        private final Context mContext;
+
+        public Dependencies(final Context context) {
+            mContext = context;
+        }
+
+        /**
+         * Create a netlink socket connected to the kernel.
+         *
+         * @return fd the fileDescriptor of the socket.
+         */
+        public FileDescriptor createConnectedNetlinkSocket()
+                throws ErrnoException, SocketException {
+            final FileDescriptor fd = NetlinkUtils.createNetLinkInetDiagSocket();
+            NetlinkUtils.connectSocketToNetlink(fd);
+            Os.setsockoptTimeval(fd, SOL_SOCKET, SO_SNDTIMEO,
+                    StructTimeval.fromMillis(IO_TIMEOUT_MS));
+            return fd;
+        }
+
+        /**
+         * Send composed message request to kernel.
+         *
+         * The given FileDescriptor is expected to be created by
+         * {@link #createConnectedNetlinkSocket} or equivalent way.
+         *
+         * @param fd a netlink socket {@code FileDescriptor} connected to the kernel.
+         * @param msg the byte array representing the request message to write to kernel.
+         */
+        public void sendRequest(@NonNull final FileDescriptor fd,
+                @NonNull final byte[] msg)
+                throws ErrnoException, InterruptedIOException {
+            Os.write(fd, msg, 0 /* byteOffset */, msg.length);
+        }
+
+        /**
+         * Get an INetd connector.
+         */
+        public INetd getNetd() {
+            return INetd.Stub.asInterface(
+                    (IBinder) mContext.getSystemService(Context.NETD_SERVICE));
+        }
+
+        /**
+         * Receive the response message from kernel via given {@code FileDescriptor}.
+         * The usage should follow the {@code #sendRequest} call with the same
+         * FileDescriptor.
+         *
+         * The overall response may be large but the individual messages should not be
+         * excessively large(8-16kB) because trying to get the kernel to return
+         * everything in one big buffer is inefficient as it forces the kernel to allocate
+         * large chunks of linearly physically contiguous memory. The usage should iterate the
+         * call of this method until the end of the overall message.
+         *
+         * The default receiving buffer size should be small enough that it is always
+         * processed within the {@link NetlinkUtils#IO_TIMEOUT_MS} timeout.
+         */
+        public ByteBuffer recvSockDiagResponse(@NonNull final FileDescriptor fd)
+                throws ErrnoException, InterruptedIOException {
+            return NetlinkUtils.recvMessage(
+                    fd, NetlinkUtils.DEFAULT_RECV_BUFSIZE, NetlinkUtils.IO_TIMEOUT_MS);
+        }
+
+        /**
+         * Construct a new KeepaliveTracker.
+         */
+        public KeepaliveTracker newKeepaliveTracker(@NonNull Context context,
+                @NonNull Handler connectivityserviceHander) {
+            return new KeepaliveTracker(mContext, connectivityserviceHander);
+        }
+
+        /**
+         * Find out if a feature is enabled from DeviceConfig.
+         *
+         * @param name The name of the property to look up.
+         * @return whether the feature is enabled
+         */
+        public boolean isFeatureEnabled(@NonNull final String name) {
+            return DeviceConfigUtils.isFeatureEnabled(mContext, NAMESPACE_CONNECTIVITY, name);
+        }
+    }
+}
diff --git a/service/src/com/android/server/connectivity/KeepaliveTracker.java b/service/src/com/android/server/connectivity/KeepaliveTracker.java
index 9c36760..03f8f3e 100644
--- a/service/src/com/android/server/connectivity/KeepaliveTracker.java
+++ b/service/src/com/android/server/connectivity/KeepaliveTracker.java
@@ -18,7 +18,6 @@
 
 import static android.content.pm.PackageManager.PERMISSION_GRANTED;
 import static android.net.NattSocketKeepalive.NATT_PORT;
-import static android.net.NetworkAgent.CMD_START_SOCKET_KEEPALIVE;
 import static android.net.SocketKeepalive.BINDER_DIED;
 import static android.net.SocketKeepalive.DATA_RECEIVED;
 import static android.net.SocketKeepalive.ERROR_INSUFFICIENT_RESOURCES;
@@ -33,27 +32,15 @@
 import static android.net.SocketKeepalive.MIN_INTERVAL_SEC;
 import static android.net.SocketKeepalive.NO_KEEPALIVE;
 import static android.net.SocketKeepalive.SUCCESS;
-import static android.system.OsConstants.AF_INET;
-import static android.system.OsConstants.AF_INET6;
-import static android.system.OsConstants.SOL_SOCKET;
-import static android.system.OsConstants.SO_SNDTIMEO;
-
-import static com.android.net.module.util.netlink.NetlinkConstants.NLMSG_DONE;
-import static com.android.net.module.util.netlink.NetlinkConstants.SOCKDIAG_MSG_HEADER_SIZE;
-import static com.android.net.module.util.netlink.NetlinkConstants.SOCK_DIAG_BY_FAMILY;
-import static com.android.net.module.util.netlink.NetlinkUtils.IO_TIMEOUT_MS;
 
 import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.content.Context;
-import android.content.res.Resources;
 import android.net.ConnectivityResources;
-import android.net.INetd;
 import android.net.ISocketKeepaliveCallback;
 import android.net.InetAddresses;
 import android.net.InvalidPacketException;
 import android.net.KeepalivePacketData;
-import android.net.MarkMaskParcel;
 import android.net.NattKeepalivePacketData;
 import android.net.NetworkAgent;
 import android.net.SocketKeepalive.InvalidSocketException;
@@ -67,29 +54,18 @@
 import android.os.RemoteException;
 import android.system.ErrnoException;
 import android.system.Os;
-import android.system.StructTimeval;
 import android.util.Log;
 import android.util.Pair;
-import android.util.SparseArray;
 
 import com.android.connectivity.resources.R;
-import com.android.internal.annotations.VisibleForTesting;
 import com.android.internal.util.IndentingPrintWriter;
 import com.android.net.module.util.HexDump;
 import com.android.net.module.util.IpUtils;
-import com.android.net.module.util.SocketUtils;
-import com.android.net.module.util.netlink.InetDiagMessage;
-import com.android.net.module.util.netlink.NetlinkUtils;
-import com.android.net.module.util.netlink.StructNlAttr;
 
 import java.io.FileDescriptor;
-import java.io.InterruptedIOException;
 import java.net.InetAddress;
 import java.net.InetSocketAddress;
 import java.net.SocketAddress;
-import java.net.SocketException;
-import java.nio.BufferUnderflowException;
-import java.nio.ByteBuffer;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.HashMap;
@@ -107,12 +83,10 @@
     private static final boolean DBG = false;
 
     public static final String PERMISSION = android.Manifest.permission.PACKET_KEEPALIVE_OFFLOAD;
-    private static final int[] ADDRESS_FAMILIES = new int[] {AF_INET6, AF_INET};
 
     /** Keeps track of keepalive requests. */
     private final HashMap <NetworkAgentInfo, HashMap<Integer, KeepaliveInfo>> mKeepalives =
             new HashMap<> ();
-    private final Handler mConnectivityServiceHandler;
     @NonNull
     private final TcpKeepaliveController mTcpController;
     @NonNull
@@ -131,35 +105,17 @@
     // Allowed unprivileged keepalive slots per uid. Caller's permission will be enforced if
     // the number of remaining keepalive slots is less than or equal to the threshold.
     private final int mAllowedUnprivilegedSlotsForUid;
-    /**
-     * The {@code inetDiagReqV2} messages for different IP family.
-     *
-     *   Key: Ip family type.
-     * Value: Bytes array represent the {@code inetDiagReqV2}.
-     *
-     * This should only be accessed in the connectivity service handler thread.
-     */
-    private final SparseArray<byte[]> mSockDiagMsg = new SparseArray<>();
-    private final Dependencies mDependencies;
-    private final INetd mNetd;
 
     public KeepaliveTracker(Context context, Handler handler) {
-        this(context, handler, new Dependencies(context));
-    }
-
-    @VisibleForTesting
-    public KeepaliveTracker(Context context, Handler handler, Dependencies dependencies) {
-        mConnectivityServiceHandler = handler;
         mTcpController = new TcpKeepaliveController(handler);
         mContext = context;
-        mDependencies = dependencies;
-        mSupportedKeepalives = mDependencies.getSupportedKeepalives();
-        mNetd = mDependencies.getNetd();
 
-        final Resources res = mDependencies.newConnectivityResources();
-        mReservedPrivilegedSlots = res.getInteger(
+        mSupportedKeepalives = KeepaliveUtils.getSupportedKeepalives(mContext);
+
+        final ConnectivityResources res = new ConnectivityResources(mContext);
+        mReservedPrivilegedSlots = res.get().getInteger(
                 R.integer.config_reservedPrivilegedKeepaliveSlots);
-        mAllowedUnprivilegedSlotsForUid = res.getInteger(
+        mAllowedUnprivilegedSlotsForUid = res.get().getInteger(
                 R.integer.config_allowedUnprivilegedKeepalivePerUid);
     }
 
@@ -171,13 +127,13 @@
      */
     class KeepaliveInfo implements IBinder.DeathRecipient {
         // Bookkeeping data.
-        private final ISocketKeepaliveCallback mCallback;
+        public final ISocketKeepaliveCallback mCallback;
         private final int mUid;
         private final int mPid;
         private final boolean mPrivileged;
-        private final NetworkAgentInfo mNai;
+        public final NetworkAgentInfo mNai;
         private final int mType;
-        private final FileDescriptor mFd;
+        public final FileDescriptor mFd;
 
         public static final int TYPE_NATT = 1;
         public static final int TYPE_TCP = 2;
@@ -285,6 +241,10 @@
             }
         }
 
+        public int getSlot() {
+            return mSlot;
+        }
+
         private int checkNetworkConnected() {
             if (!mNai.networkInfo.isConnectedOrConnecting()) {
                 return ERROR_INVALID_NETWORK;
@@ -457,6 +417,13 @@
         void onFileDescriptorInitiatedStop(final int socketKeepaliveReason) {
             handleStopKeepalive(mNai, mSlot, socketKeepaliveReason);
         }
+
+        /**
+         * Construct a new KeepaliveInfo from existing KeepaliveInfo with a new fd.
+         */
+        public KeepaliveInfo withFd(@NonNull FileDescriptor fd) throws InvalidSocketException {
+            return new KeepaliveInfo(mCallback, mNai, mPacket, mInterval, mType, fd);
+        }
     }
 
     void notifyErrorCallback(ISocketKeepaliveCallback cb, int error) {
@@ -486,6 +453,9 @@
         return slot;
     }
 
+    /**
+     * Handle start keepalives with the message.
+     */
     public void handleStartKeepalive(Message message) {
         KeepaliveInfo ki = (KeepaliveInfo) message.obj;
         NetworkAgentInfo nai = ki.getNai();
@@ -646,7 +616,8 @@
      * Called when requesting that keepalives be started on a IPsec NAT-T socket. See
      * {@link android.net.SocketKeepalive}.
      **/
-    public void startNattKeepalive(@Nullable NetworkAgentInfo nai,
+    @Nullable
+    public KeepaliveInfo makeNattKeepaliveInfo(@Nullable NetworkAgentInfo nai,
             @Nullable FileDescriptor fd,
             int intervalSeconds,
             @NonNull ISocketKeepaliveCallback cb,
@@ -656,7 +627,7 @@
             int dstPort) {
         if (nai == null) {
             notifyErrorCallback(cb, ERROR_INVALID_NETWORK);
-            return;
+            return null;
         }
 
         InetAddress srcAddress, dstAddress;
@@ -665,7 +636,7 @@
             dstAddress = InetAddresses.parseNumericAddress(dstAddrString);
         } catch (IllegalArgumentException e) {
             notifyErrorCallback(cb, ERROR_INVALID_IP_ADDRESS);
-            return;
+            return null;
         }
 
         KeepalivePacketData packet;
@@ -674,7 +645,7 @@
                     srcAddress, srcPort, dstAddress, NATT_PORT);
         } catch (InvalidPacketException e) {
             notifyErrorCallback(cb, e.getError());
-            return;
+            return null;
         }
         KeepaliveInfo ki = null;
         try {
@@ -683,15 +654,14 @@
         } catch (InvalidSocketException | IllegalArgumentException | SecurityException e) {
             Log.e(TAG, "Fail to construct keepalive", e);
             notifyErrorCallback(cb, ERROR_INVALID_SOCKET);
-            return;
+            return null;
         }
-        Log.d(TAG, "Created keepalive: " + ki.toString());
-        mConnectivityServiceHandler.obtainMessage(
-                NetworkAgent.CMD_START_SOCKET_KEEPALIVE, ki).sendToTarget();
+        Log.d(TAG, "Created keepalive: " + ki);
+        return ki;
     }
 
     /**
-     * Called by ConnectivityService to start TCP keepalive on a file descriptor.
+     * Make a KeepaliveInfo for a TCP socket.
      *
      * In order to offload keepalive for application correctly, sequence number, ack number and
      * other fields are needed to form the keepalive packet. Thus, this function synchronously
@@ -700,13 +670,14 @@
      *
      * See {@link android.net.SocketKeepalive}.
      **/
-    public void startTcpKeepalive(@Nullable NetworkAgentInfo nai,
+    @Nullable
+    public KeepaliveInfo makeTcpKeepaliveInfo(@Nullable NetworkAgentInfo nai,
             @NonNull FileDescriptor fd,
             int intervalSeconds,
             @NonNull ISocketKeepaliveCallback cb) {
         if (nai == null) {
             notifyErrorCallback(cb, ERROR_INVALID_NETWORK);
-            return;
+            return null;
         }
 
         final TcpKeepalivePacketData packet;
@@ -714,10 +685,10 @@
             packet = TcpKeepaliveController.getTcpKeepalivePacket(fd);
         } catch (InvalidSocketException e) {
             notifyErrorCallback(cb, e.error);
-            return;
+            return null;
         } catch (InvalidPacketException e) {
             notifyErrorCallback(cb, e.getError());
-            return;
+            return null;
         }
         KeepaliveInfo ki = null;
         try {
@@ -726,20 +697,22 @@
         } catch (InvalidSocketException | IllegalArgumentException | SecurityException e) {
             Log.e(TAG, "Fail to construct keepalive e=" + e);
             notifyErrorCallback(cb, ERROR_INVALID_SOCKET);
-            return;
+            return null;
         }
         Log.d(TAG, "Created keepalive: " + ki.toString());
-        mConnectivityServiceHandler.obtainMessage(CMD_START_SOCKET_KEEPALIVE, ki).sendToTarget();
+        return ki;
     }
 
-   /**
-    * Called when requesting that keepalives be started on a IPsec NAT-T socket. This function is
-    * identical to {@link #startNattKeepalive}, but also takes a {@code resourceId}, which is the
-    * resource index bound to the {@link UdpEncapsulationSocket} when creating by
-    * {@link com.android.server.IpSecService} to verify whether the given
-    * {@link UdpEncapsulationSocket} is legitimate.
-    **/
-    public void startNattKeepalive(@Nullable NetworkAgentInfo nai,
+    /**
+     * Make a KeepaliveInfo for an IPSec NAT-T socket.
+     *
+     * This function is identical to {@link #makeNattKeepaliveInfo}, but also takes a
+     * {@code resourceId}, which is the resource index bound to the {@link UdpEncapsulationSocket}
+     * when creating by {@link com.android.server.IpSecService} to verify whether the given
+     * {@link UdpEncapsulationSocket} is legitimate.
+     **/
+    @Nullable
+    public KeepaliveInfo makeNattKeepaliveInfo(@Nullable NetworkAgentInfo nai,
             @Nullable FileDescriptor fd,
             int resourceId,
             int intervalSeconds,
@@ -750,6 +723,7 @@
         // Ensure that the socket is created by IpSecService.
         if (!isNattKeepaliveSocketValid(fd, resourceId)) {
             notifyErrorCallback(cb, ERROR_INVALID_SOCKET);
+            return null;
         }
 
         // Get src port to adopt old API.
@@ -759,10 +733,11 @@
             srcPort = ((InetSocketAddress) srcSockAddr).getPort();
         } catch (ErrnoException e) {
             notifyErrorCallback(cb, ERROR_INVALID_SOCKET);
+            return null;
         }
 
         // Forward request to old API.
-        startNattKeepalive(nai, fd, intervalSeconds, cb, srcAddrString, srcPort,
+        return makeNattKeepaliveInfo(nai, fd, intervalSeconds, cb, srcAddrString, srcPort,
                 dstAddrString, dstPort);
     }
 
@@ -801,196 +776,4 @@
         }
         pw.decreaseIndent();
     }
-
-    /**
-     * Dependencies class for testing.
-     */
-    @VisibleForTesting
-    public static class Dependencies {
-        private final Context mContext;
-
-        public Dependencies(final Context context) {
-            mContext = context;
-        }
-
-        /**
-         * Create a netlink socket connected to the kernel.
-         *
-         * @return fd the fileDescriptor of the socket.
-         */
-        public FileDescriptor createConnectedNetlinkSocket()
-                throws ErrnoException, SocketException {
-            final FileDescriptor fd = NetlinkUtils.createNetLinkInetDiagSocket();
-            NetlinkUtils.connectSocketToNetlink(fd);
-            Os.setsockoptTimeval(fd, SOL_SOCKET, SO_SNDTIMEO,
-                    StructTimeval.fromMillis(IO_TIMEOUT_MS));
-            return fd;
-        }
-
-        /**
-         * Send composed message request to kernel.
-         *
-         * The given FileDescriptor is expected to be created by
-         * {@link #createConnectedNetlinkSocket} or equivalent way.
-         *
-         * @param fd a netlink socket {@code FileDescriptor} connected to the kernel.
-         * @param msg the byte array representing the request message to write to kernel.
-         */
-        public void sendRequest(@NonNull final FileDescriptor fd,
-                @NonNull final byte[] msg)
-                throws ErrnoException, InterruptedIOException {
-            Os.write(fd, msg, 0 /* byteOffset */, msg.length);
-        }
-
-        /**
-         * Get an INetd connector.
-         */
-        public INetd getNetd() {
-            return INetd.Stub.asInterface(
-                    (IBinder) mContext.getSystemService(Context.NETD_SERVICE));
-        }
-
-        /**
-         * Receive the response message from kernel via given {@code FileDescriptor}.
-         * The usage should follow the {@code #sendRequest} call with the same
-         * FileDescriptor.
-         *
-         * The overall response may be large but the individual messages should not be
-         * excessively large(8-16kB) because trying to get the kernel to return
-         * everything in one big buffer is inefficient as it forces the kernel to allocate
-         * large chunks of linearly physically contiguous memory. The usage should iterate the
-         * call of this method until the end of the overall message.
-         *
-         * The default receiving buffer size should be small enough that it is always
-         * processed within the {@link NetlinkUtils#IO_TIMEOUT_MS} timeout.
-         */
-        public ByteBuffer recvSockDiagResponse(@NonNull final FileDescriptor fd)
-                throws ErrnoException, InterruptedIOException {
-            return NetlinkUtils.recvMessage(
-                    fd, NetlinkUtils.DEFAULT_RECV_BUFSIZE, NetlinkUtils.IO_TIMEOUT_MS);
-        }
-
-        /**
-         * Read supported keepalive count for each transport type from overlay resource.
-         */
-        public int[] getSupportedKeepalives() {
-            return KeepaliveUtils.getSupportedKeepalives(mContext);
-        }
-
-        /**
-         * Construct a new Resource from a new ConnectivityResources.
-         */
-        public Resources newConnectivityResources() {
-            final ConnectivityResources resources = new ConnectivityResources(mContext);
-            return resources.get();
-        }
-    }
-
-    private void ensureRunningOnHandlerThread() {
-        if (mConnectivityServiceHandler.getLooper().getThread() != Thread.currentThread()) {
-            throw new IllegalStateException(
-                    "Not running on handler thread: " + Thread.currentThread().getName());
-        }
-    }
-
-    @VisibleForTesting
-    boolean isAnyTcpSocketConnected(int netId) {
-        FileDescriptor fd = null;
-
-        try {
-            fd = mDependencies.createConnectedNetlinkSocket();
-
-            // Get network mask
-            final MarkMaskParcel parcel = mNetd.getFwmarkForNetwork(netId);
-            final int networkMark = (parcel != null) ? parcel.mark : NetlinkUtils.UNKNOWN_MARK;
-            final int networkMask = (parcel != null) ? parcel.mask : NetlinkUtils.NULL_MASK;
-
-            // Send request for each IP family
-            for (final int family : ADDRESS_FAMILIES) {
-                if (isAnyTcpSocketConnectedForFamily(fd, family, networkMark, networkMask)) {
-                    return true;
-                }
-            }
-        } catch (ErrnoException | SocketException | InterruptedIOException | RemoteException e) {
-            Log.e(TAG, "Fail to get socket info via netlink.", e);
-        } finally {
-            SocketUtils.closeSocketQuietly(fd);
-        }
-
-        return false;
-    }
-
-    private boolean isAnyTcpSocketConnectedForFamily(FileDescriptor fd, int family, int networkMark,
-            int networkMask) throws ErrnoException, InterruptedIOException {
-        ensureRunningOnHandlerThread();
-        // Build SocketDiag messages and cache it.
-        if (mSockDiagMsg.get(family) == null) {
-            mSockDiagMsg.put(family, InetDiagMessage.buildInetDiagReqForAliveTcpSockets(family));
-        }
-        mDependencies.sendRequest(fd, mSockDiagMsg.get(family));
-
-        // Iteration limitation as a protection to avoid possible infinite loops.
-        // DEFAULT_RECV_BUFSIZE could read more than 20 sockets per time. Max iteration
-        // should be enough to go through reasonable TCP sockets in the device.
-        final int maxIteration = 100;
-        int parsingIteration = 0;
-        while (parsingIteration < maxIteration) {
-            final ByteBuffer bytes = mDependencies.recvSockDiagResponse(fd);
-
-            try {
-                while (NetlinkUtils.enoughBytesRemainForValidNlMsg(bytes)) {
-                    final int startPos = bytes.position();
-
-                    final int nlmsgLen = bytes.getInt();
-                    final int nlmsgType = bytes.getShort();
-                    if (isEndOfMessageOrError(nlmsgType)) return false;
-                    // TODO: Parse InetDiagMessage to get uid and dst address information to filter
-                    //  socket via NetlinkMessage.parse.
-
-                    // Skip the header to move to data part.
-                    bytes.position(startPos + SOCKDIAG_MSG_HEADER_SIZE);
-
-                    if (isTargetTcpSocket(bytes, nlmsgLen, networkMark, networkMask)) {
-                        return true;
-                    }
-                }
-            } catch (BufferUnderflowException e) {
-                // The exception happens in random place in either header position or any data
-                // position. Partial bytes from the middle of the byte buffer may not be enough to
-                // clarify, so print out the content before the error to possibly prevent printing
-                // the whole 8K buffer.
-                final int exceptionPos = bytes.position();
-                final String hex = HexDump.dumpHexString(bytes.array(), 0, exceptionPos);
-                Log.e(TAG, "Unexpected socket info parsing: " + hex, e);
-            }
-
-            parsingIteration++;
-        }
-        return false;
-    }
-
-    private boolean isEndOfMessageOrError(int nlmsgType) {
-        return nlmsgType == NLMSG_DONE || nlmsgType != SOCK_DIAG_BY_FAMILY;
-    }
-
-    private boolean isTargetTcpSocket(@NonNull ByteBuffer bytes, int nlmsgLen, int networkMark,
-            int networkMask) {
-        final int mark = readSocketDataAndReturnMark(bytes, nlmsgLen);
-        return (mark & networkMask) == networkMark;
-    }
-
-    private int readSocketDataAndReturnMark(@NonNull ByteBuffer bytes, int nlmsgLen) {
-        final int nextMsgOffset = bytes.position() + nlmsgLen - SOCKDIAG_MSG_HEADER_SIZE;
-        int mark = NetlinkUtils.INIT_MARK_VALUE;
-        // Get socket mark
-        // TODO: Add a parsing method in NetlinkMessage.parse to support this to skip the remaining
-        //  data.
-        while (bytes.position() < nextMsgOffset) {
-            final StructNlAttr nlattr = StructNlAttr.parse(bytes);
-            if (nlattr != null && nlattr.nla_type == NetlinkUtils.INET_DIAG_MARK) {
-                mark = nlattr.getValueAsInteger();
-            }
-        }
-        return mark;
-    }
 }
diff --git a/tests/cts/hostside/Android.bp b/tests/cts/hostside/Android.bp
index 47ea53e..5474d08 100644
--- a/tests/cts/hostside/Android.bp
+++ b/tests/cts/hostside/Android.bp
@@ -37,7 +37,6 @@
     data: [
         ":CtsHostsideNetworkTestsApp",
         ":CtsHostsideNetworkTestsApp2",
-        ":CtsHostsideNetworkTestsAppNext",
     ],
     per_testcase_directory: true,
 }
diff --git a/tests/cts/net/src/android/net/cts/ConnectivityManagerTest.java b/tests/cts/net/src/android/net/cts/ConnectivityManagerTest.java
index 61b597a..f596b79 100644
--- a/tests/cts/net/src/android/net/cts/ConnectivityManagerTest.java
+++ b/tests/cts/net/src/android/net/cts/ConnectivityManagerTest.java
@@ -96,6 +96,7 @@
 import static com.android.net.module.util.NetworkStackConstants.TEST_CAPTIVE_PORTAL_HTTP_URL;
 import static com.android.networkstack.apishim.ConstantsShim.BLOCKED_REASON_LOCKDOWN_VPN;
 import static com.android.networkstack.apishim.ConstantsShim.BLOCKED_REASON_NONE;
+import static com.android.networkstack.apishim.ConstantsShim.RECEIVER_EXPORTED;
 import static com.android.testutils.Cleanup.testAndCleanup;
 import static com.android.testutils.DevSdkIgnoreRuleKt.SC_V2;
 import static com.android.testutils.MiscAsserts.assertThrows;
@@ -1131,7 +1132,8 @@
 
         final ConnectivityActionReceiver receiver = new ConnectivityActionReceiver(
                 mCm, ConnectivityManager.TYPE_WIFI, NetworkInfo.State.CONNECTED);
-        mContext.registerReceiver(receiver, filter);
+        final int flags = SdkLevel.isAtLeastT() ? RECEIVER_EXPORTED : 0;
+        mContext.registerReceiver(receiver, filter, flags);
 
         // Create a broadcast PendingIntent for NETWORK_CALLBACK_ACTION.
         final Intent intent = new Intent(NETWORK_CALLBACK_ACTION)
@@ -1225,7 +1227,8 @@
                     networkFuture.complete(intent.getParcelableExtra(EXTRA_NETWORK));
                 }
             };
-            mContext.registerReceiver(receiver, filter);
+            final int flags = SdkLevel.isAtLeastT() ? RECEIVER_EXPORTED : 0;
+            mContext.registerReceiver(receiver, filter, flags);
 
             final Network wifiNetwork = mCtsNetUtils.ensureWifiConnected();
             try {
diff --git a/tests/cts/net/src/android/net/cts/NsdManagerTest.kt b/tests/cts/net/src/android/net/cts/NsdManagerTest.kt
index 2b5c305..b7eb009 100644
--- a/tests/cts/net/src/android/net/cts/NsdManagerTest.kt
+++ b/tests/cts/net/src/android/net/cts/NsdManagerTest.kt
@@ -41,7 +41,9 @@
 import android.net.cts.NsdManagerTest.NsdRegistrationRecord.RegistrationEvent.ServiceUnregistered
 import android.net.cts.NsdManagerTest.NsdRegistrationRecord.RegistrationEvent.UnregistrationFailed
 import android.net.cts.NsdManagerTest.NsdResolveRecord.ResolveEvent.ResolveFailed
+import android.net.cts.NsdManagerTest.NsdResolveRecord.ResolveEvent.ResolveStopped
 import android.net.cts.NsdManagerTest.NsdResolveRecord.ResolveEvent.ServiceResolved
+import android.net.cts.NsdManagerTest.NsdResolveRecord.ResolveEvent.StopResolutionFailed
 import android.net.nsd.NsdManager
 import android.net.nsd.NsdManager.DiscoveryListener
 import android.net.nsd.NsdManager.RegistrationListener
@@ -66,15 +68,6 @@
 import com.android.testutils.runAsShell
 import com.android.testutils.tryTest
 import com.android.testutils.waitForIdle
-import org.junit.After
-import org.junit.Assert.assertArrayEquals
-import org.junit.Assert.assertFalse
-import org.junit.Assert.assertTrue
-import org.junit.Assume.assumeTrue
-import org.junit.Before
-import org.junit.Rule
-import org.junit.Test
-import org.junit.runner.RunWith
 import java.io.File
 import java.net.ServerSocket
 import java.nio.charset.StandardCharsets
@@ -86,6 +79,15 @@
 import kotlin.test.assertNull
 import kotlin.test.assertTrue
 import kotlin.test.fail
+import org.junit.After
+import org.junit.Assert.assertArrayEquals
+import org.junit.Assert.assertFalse
+import org.junit.Assert.assertTrue
+import org.junit.Assume.assumeTrue
+import org.junit.Before
+import org.junit.Rule
+import org.junit.Test
+import org.junit.runner.RunWith
 
 private const val TAG = "NsdManagerTest"
 private const val TIMEOUT_MS = 2000L
@@ -182,10 +184,10 @@
                 val errorCode: Int
             ) : RegistrationEvent()
 
-            data class ServiceRegistered(override val serviceInfo: NsdServiceInfo)
-                : RegistrationEvent()
-            data class ServiceUnregistered(override val serviceInfo: NsdServiceInfo)
-                : RegistrationEvent()
+            data class ServiceRegistered(override val serviceInfo: NsdServiceInfo) :
+                    RegistrationEvent()
+            data class ServiceUnregistered(override val serviceInfo: NsdServiceInfo) :
+                    RegistrationEvent()
         }
 
         override fun onRegistrationFailed(si: NsdServiceInfo, err: Int) {
@@ -208,11 +210,11 @@
     private class NsdDiscoveryRecord(expectedThreadId: Int? = null) :
             DiscoveryListener, NsdRecord<NsdDiscoveryRecord.DiscoveryEvent>(expectedThreadId) {
         sealed class DiscoveryEvent : NsdEvent {
-            data class StartDiscoveryFailed(val serviceType: String, val errorCode: Int)
-                : DiscoveryEvent()
+            data class StartDiscoveryFailed(val serviceType: String, val errorCode: Int) :
+                    DiscoveryEvent()
 
-            data class StopDiscoveryFailed(val serviceType: String, val errorCode: Int)
-                : DiscoveryEvent()
+            data class StopDiscoveryFailed(val serviceType: String, val errorCode: Int) :
+                    DiscoveryEvent()
 
             data class DiscoveryStarted(val serviceType: String) : DiscoveryEvent()
             data class DiscoveryStopped(val serviceType: String) : DiscoveryEvent()
@@ -259,10 +261,13 @@
     private class NsdResolveRecord : ResolveListener,
             NsdRecord<NsdResolveRecord.ResolveEvent>() {
         sealed class ResolveEvent : NsdEvent {
-            data class ResolveFailed(val serviceInfo: NsdServiceInfo, val errorCode: Int)
-                : ResolveEvent()
+            data class ResolveFailed(val serviceInfo: NsdServiceInfo, val errorCode: Int) :
+                    ResolveEvent()
 
             data class ServiceResolved(val serviceInfo: NsdServiceInfo) : ResolveEvent()
+            data class ResolveStopped(val serviceInfo: NsdServiceInfo) : ResolveEvent()
+            data class StopResolutionFailed(val serviceInfo: NsdServiceInfo, val errorCode: Int) :
+                    ResolveEvent()
         }
 
         override fun onResolveFailed(si: NsdServiceInfo, err: Int) {
@@ -272,6 +277,14 @@
         override fun onServiceResolved(si: NsdServiceInfo) {
             add(ServiceResolved(si))
         }
+
+        override fun onResolveStopped(si: NsdServiceInfo) {
+            add(ResolveStopped(si))
+        }
+
+        override fun onStopResolutionFailed(si: NsdServiceInfo, err: Int) {
+            add(StopResolutionFailed(si, err))
+        }
     }
 
     @Before
@@ -739,6 +752,26 @@
                 NsdManager.RUN_NATIVE_NSD_ONLY_IF_LEGACY_APPS_T_AND_LATER))
     }
 
+    @Test
+    fun testStopServiceResolution() {
+        // This test requires shims supporting U+ APIs (NsdManager.stopServiceResolution)
+        assumeTrue(TestUtils.shouldTestUApis())
+
+        val si = NsdServiceInfo()
+        si.serviceType = this@NsdManagerTest.serviceType
+        si.serviceName = this@NsdManagerTest.serviceName
+        si.port = 12345 // Test won't try to connect so port does not matter
+
+        val resolveRecord = NsdResolveRecord()
+        // Try to resolve an unknown service then stop it immediately.
+        // Expected ResolveStopped callback.
+        nsdShim.resolveService(nsdManager, si, { it.run() }, resolveRecord)
+        nsdShim.stopServiceResolution(nsdManager, resolveRecord)
+        val stoppedCb = resolveRecord.expectCallback<ResolveStopped>()
+        assertEquals(si.serviceName, stoppedCb.serviceInfo.serviceName)
+        assertEquals(si.serviceType, stoppedCb.serviceInfo.serviceType)
+    }
+
     /**
      * Register a service and return its registration record.
      */
diff --git a/tests/unit/java/android/net/nsd/NsdServiceInfoTest.java b/tests/unit/java/android/net/nsd/NsdServiceInfoTest.java
index 64355ed..9ce0693 100644
--- a/tests/unit/java/android/net/nsd/NsdServiceInfoTest.java
+++ b/tests/unit/java/android/net/nsd/NsdServiceInfoTest.java
@@ -21,6 +21,7 @@
 import static org.junit.Assert.assertTrue;
 import static org.junit.Assert.fail;
 
+import android.net.InetAddresses;
 import android.net.Network;
 import android.os.Build;
 import android.os.Bundle;
@@ -38,6 +39,7 @@
 import java.net.InetAddress;
 import java.net.UnknownHostException;
 import java.util.Arrays;
+import java.util.List;
 import java.util.Map;
 
 @RunWith(DevSdkIgnoreRunner.class)
@@ -45,6 +47,8 @@
 @DevSdkIgnoreRule.IgnoreUpTo(Build.VERSION_CODES.S_V2)
 public class NsdServiceInfoTest {
 
+    private static final InetAddress IPV4_ADDRESS = InetAddresses.parseNumericAddress("192.0.2.1");
+    private static final InetAddress IPV6_ADDRESS = InetAddresses.parseNumericAddress("2001:db8::");
     public final static InetAddress LOCALHOST;
     static {
         // Because test.
@@ -124,6 +128,7 @@
         fullInfo.setServiceType("_kitten._tcp");
         fullInfo.setPort(4242);
         fullInfo.setHost(LOCALHOST);
+        fullInfo.setHostAddresses(List.of(IPV4_ADDRESS));
         fullInfo.setNetwork(new Network(123));
         fullInfo.setInterfaceIndex(456);
         checkParcelable(fullInfo);
@@ -139,6 +144,7 @@
         attributedInfo.setServiceType("_kitten._tcp");
         attributedInfo.setPort(4242);
         attributedInfo.setHost(LOCALHOST);
+        fullInfo.setHostAddresses(List.of(IPV6_ADDRESS, IPV4_ADDRESS));
         attributedInfo.setAttribute("color", "pink");
         attributedInfo.setAttribute("sound", (new String("にゃあ")).getBytes("UTF-8"));
         attributedInfo.setAttribute("adorable", (String) null);
diff --git a/tests/unit/java/com/android/server/ConnectivityServiceTest.java b/tests/unit/java/com/android/server/ConnectivityServiceTest.java
index 17e769c..c9783ba 100755
--- a/tests/unit/java/com/android/server/ConnectivityServiceTest.java
+++ b/tests/unit/java/com/android/server/ConnectivityServiceTest.java
@@ -15760,6 +15760,39 @@
     }
 
     @Test
+    public void testProfileNetworkPreferenceBlocking_addUser() throws Exception {
+        final InOrder inOrder = inOrder(mMockNetd);
+        doReturn(asList(PRIMARY_USER_HANDLE)).when(mUserManager).getUserHandles(anyBoolean());
+
+        // Only one network
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent.connect(true);
+
+        // Verify uid ranges 0~99999 are allowed
+        final ArraySet<UidRange> allowedRanges = new ArraySet<>();
+        allowedRanges.add(PRIMARY_UIDRANGE);
+        final NativeUidRangeConfig config1User = new NativeUidRangeConfig(
+                mCellAgent.getNetwork().netId,
+                toUidRangeStableParcels(allowedRanges),
+                0 /* subPriority */);
+        inOrder.verify(mMockNetd).setNetworkAllowlist(new NativeUidRangeConfig[] { config1User });
+
+        doReturn(asList(PRIMARY_USER_HANDLE, SECONDARY_USER_HANDLE))
+                .when(mUserManager).getUserHandles(anyBoolean());
+        final Intent addedIntent = new Intent(ACTION_USER_ADDED);
+        addedIntent.putExtra(Intent.EXTRA_USER, UserHandle.of(SECONDARY_USER));
+        processBroadcast(addedIntent);
+
+        // Make sure the allow list has been updated.
+        allowedRanges.add(UidRange.createForUser(SECONDARY_USER_HANDLE));
+        final NativeUidRangeConfig config2Users = new NativeUidRangeConfig(
+                mCellAgent.getNetwork().netId,
+                toUidRangeStableParcels(allowedRanges),
+                0 /* subPriority */);
+        inOrder.verify(mMockNetd).setNetworkAllowlist(new NativeUidRangeConfig[] { config2Users });
+    }
+
+    @Test
     public void testProfileNetworkPreferenceBlocking_changePreference() throws Exception {
         final InOrder inOrder = inOrder(mMockNetd);
         final UserHandle testHandle = setupEnterpriseNetwork();
diff --git a/tests/unit/java/com/android/server/NsdServiceTest.java b/tests/unit/java/com/android/server/NsdServiceTest.java
index 1bd49a5..98a8ed2 100644
--- a/tests/unit/java/com/android/server/NsdServiceTest.java
+++ b/tests/unit/java/com/android/server/NsdServiceTest.java
@@ -16,7 +16,10 @@
 
 package com.android.server;
 
+import static android.net.InetAddresses.parseNumericAddress;
+import static android.net.nsd.NsdManager.FAILURE_BAD_PARAMETERS;
 import static android.net.nsd.NsdManager.FAILURE_INTERNAL_ERROR;
+import static android.net.nsd.NsdManager.FAILURE_OPERATION_NOT_RUNNING;
 
 import static com.android.testutils.ContextUtils.mockService;
 
@@ -27,6 +30,7 @@
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertNotNull;
 import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertThrows;
 import static org.junit.Assert.assertTrue;
 import static org.mockito.ArgumentMatchers.anyInt;
 import static org.mockito.ArgumentMatchers.anyString;
@@ -47,7 +51,6 @@
 import android.content.ContentResolver;
 import android.content.Context;
 import android.net.INetd;
-import android.net.InetAddresses;
 import android.net.Network;
 import android.net.mdns.aidl.DiscoveryInfo;
 import android.net.mdns.aidl.GetAddressInfo;
@@ -69,11 +72,13 @@
 import android.os.IBinder;
 import android.os.Looper;
 import android.os.Message;
+import android.os.RemoteException;
 
 import androidx.annotation.NonNull;
 import androidx.test.filters.SmallTest;
 
 import com.android.server.NsdService.Dependencies;
+import com.android.server.connectivity.mdns.MdnsAdvertiser;
 import com.android.server.connectivity.mdns.MdnsDiscoveryManager;
 import com.android.server.connectivity.mdns.MdnsServiceBrowserListener;
 import com.android.server.connectivity.mdns.MdnsServiceInfo;
@@ -96,6 +101,7 @@
 import java.net.UnknownHostException;
 import java.util.LinkedList;
 import java.util.List;
+import java.util.Objects;
 import java.util.Queue;
 
 // TODOs:
@@ -129,6 +135,7 @@
     @Mock MDnsManager mMockMDnsM;
     @Mock Dependencies mDeps;
     @Mock MdnsDiscoveryManager mDiscoveryManager;
+    @Mock MdnsAdvertiser mAdvertiser;
     @Mock MdnsSocketProvider mSocketProvider;
     HandlerThread mThread;
     TestHandler mHandler;
@@ -399,13 +406,42 @@
         final NsdServiceInfo resolvedService = resInfoCaptor.getValue();
         assertEquals(SERVICE_NAME, resolvedService.getServiceName());
         assertEquals("." + SERVICE_TYPE, resolvedService.getServiceType());
-        assertEquals(InetAddresses.parseNumericAddress(serviceAddress), resolvedService.getHost());
+        assertEquals(parseNumericAddress(serviceAddress), resolvedService.getHost());
         assertEquals(servicePort, resolvedService.getPort());
         assertNull(resolvedService.getNetwork());
         assertEquals(interfaceIdx, resolvedService.getInterfaceIndex());
     }
 
     @Test
+    public void testDiscoverOnBlackholeNetwork() throws Exception {
+        final NsdManager client = connectClient(mService);
+        final DiscoveryListener discListener = mock(DiscoveryListener.class);
+        client.discoverServices(SERVICE_TYPE, PROTOCOL, discListener);
+        waitForIdle();
+
+        final IMDnsEventListener eventListener = getEventListener();
+        final ArgumentCaptor<Integer> discIdCaptor = ArgumentCaptor.forClass(Integer.class);
+        verify(mMockMDnsM).discover(discIdCaptor.capture(), eq(SERVICE_TYPE),
+                eq(0) /* interfaceIdx */);
+        // NsdManager uses a separate HandlerThread to dispatch callbacks (on ServiceHandler), so
+        // this needs to use a timeout
+        verify(discListener, timeout(TIMEOUT_MS)).onDiscoveryStarted(SERVICE_TYPE);
+
+        final DiscoveryInfo discoveryInfo = new DiscoveryInfo(
+                discIdCaptor.getValue(),
+                IMDnsEventListener.SERVICE_FOUND,
+                SERVICE_NAME,
+                SERVICE_TYPE,
+                DOMAIN_NAME,
+                123 /* interfaceIdx */,
+                INetd.DUMMY_NET_ID); // netId of the blackhole network
+        eventListener.onServiceDiscoveryStatus(discoveryInfo);
+        waitForIdle();
+
+        verify(discListener, never()).onServiceFound(any());
+    }
+
+    @Test
     public void testServiceRegistrationSuccessfulAndFailed() throws Exception {
         final NsdManager client = connectClient(mService);
         final NsdServiceInfo request = new NsdServiceInfo(SERVICE_NAME, SERVICE_TYPE);
@@ -572,6 +608,222 @@
                 anyInt()/* interfaceIdx */);
     }
 
+    @Test
+    public void testStopServiceResolution() {
+        final NsdManager client = connectClient(mService);
+        final NsdServiceInfo request = new NsdServiceInfo(SERVICE_NAME, SERVICE_TYPE);
+        final ResolveListener resolveListener = mock(ResolveListener.class);
+        client.resolveService(request, resolveListener);
+        waitForIdle();
+
+        final ArgumentCaptor<Integer> resolvIdCaptor = ArgumentCaptor.forClass(Integer.class);
+        verify(mMockMDnsM).resolve(resolvIdCaptor.capture(), eq(SERVICE_NAME), eq(SERVICE_TYPE),
+                eq("local.") /* domain */, eq(IFACE_IDX_ANY));
+
+        final int resolveId = resolvIdCaptor.getValue();
+        client.stopServiceResolution(resolveListener);
+        waitForIdle();
+
+        verify(mMockMDnsM).stopOperation(resolveId);
+        verify(resolveListener, timeout(TIMEOUT_MS)).onResolveStopped(argThat(ns ->
+                request.getServiceName().equals(ns.getServiceName())
+                        && request.getServiceType().equals(ns.getServiceType())));
+    }
+
+    @Test
+    public void testStopResolutionFailed() {
+        final NsdManager client = connectClient(mService);
+        final NsdServiceInfo request = new NsdServiceInfo(SERVICE_NAME, SERVICE_TYPE);
+        final ResolveListener resolveListener = mock(ResolveListener.class);
+        client.resolveService(request, resolveListener);
+        waitForIdle();
+
+        final ArgumentCaptor<Integer> resolvIdCaptor = ArgumentCaptor.forClass(Integer.class);
+        verify(mMockMDnsM).resolve(resolvIdCaptor.capture(), eq(SERVICE_NAME), eq(SERVICE_TYPE),
+                eq("local.") /* domain */, eq(IFACE_IDX_ANY));
+
+        final int resolveId = resolvIdCaptor.getValue();
+        doReturn(false).when(mMockMDnsM).stopOperation(anyInt());
+        client.stopServiceResolution(resolveListener);
+        waitForIdle();
+
+        verify(mMockMDnsM).stopOperation(resolveId);
+        verify(resolveListener, timeout(TIMEOUT_MS)).onStopResolutionFailed(argThat(ns ->
+                        request.getServiceName().equals(ns.getServiceName())
+                                && request.getServiceType().equals(ns.getServiceType())),
+                eq(FAILURE_OPERATION_NOT_RUNNING));
+    }
+
+    @Test @DevSdkIgnoreRule.IgnoreUpTo(Build.VERSION_CODES.TIRAMISU)
+    public void testStopResolutionDuringGettingAddress() throws RemoteException {
+        final NsdManager client = connectClient(mService);
+        final NsdServiceInfo request = new NsdServiceInfo(SERVICE_NAME, SERVICE_TYPE);
+        final ResolveListener resolveListener = mock(ResolveListener.class);
+        client.resolveService(request, resolveListener);
+        waitForIdle();
+
+        final IMDnsEventListener eventListener = getEventListener();
+        final ArgumentCaptor<Integer> resolvIdCaptor = ArgumentCaptor.forClass(Integer.class);
+        verify(mMockMDnsM).resolve(resolvIdCaptor.capture(), eq(SERVICE_NAME), eq(SERVICE_TYPE),
+                eq("local.") /* domain */, eq(IFACE_IDX_ANY));
+
+        // Resolve service successfully.
+        final ResolutionInfo resolutionInfo = new ResolutionInfo(
+                resolvIdCaptor.getValue(),
+                IMDnsEventListener.SERVICE_RESOLVED,
+                null /* serviceName */,
+                null /* serviceType */,
+                null /* domain */,
+                SERVICE_FULL_NAME,
+                DOMAIN_NAME,
+                PORT,
+                new byte[0] /* txtRecord */,
+                IFACE_IDX_ANY);
+        doReturn(true).when(mMockMDnsM).getServiceAddress(anyInt(), any(), anyInt());
+        eventListener.onServiceResolutionStatus(resolutionInfo);
+        waitForIdle();
+
+        final ArgumentCaptor<Integer> getAddrIdCaptor = ArgumentCaptor.forClass(Integer.class);
+        verify(mMockMDnsM).getServiceAddress(getAddrIdCaptor.capture(), eq(DOMAIN_NAME),
+                eq(IFACE_IDX_ANY));
+
+        final int getAddrId = getAddrIdCaptor.getValue();
+        client.stopServiceResolution(resolveListener);
+        waitForIdle();
+
+        verify(mMockMDnsM).stopOperation(getAddrId);
+        verify(resolveListener, timeout(TIMEOUT_MS)).onResolveStopped(argThat(ns ->
+                request.getServiceName().equals(ns.getServiceName())
+                        && request.getServiceType().equals(ns.getServiceType())));
+    }
+
+    private void verifyUpdatedServiceInfo(NsdServiceInfo info, String serviceName,
+            String serviceType, String address, int port, int interfaceIndex, Network network) {
+        assertEquals(serviceName, info.getServiceName());
+        assertEquals(serviceType, info.getServiceType());
+        assertTrue(info.getHostAddresses().contains(parseNumericAddress(address)));
+        assertEquals(port, info.getPort());
+        assertEquals(network, info.getNetwork());
+        assertEquals(interfaceIndex, info.getInterfaceIndex());
+    }
+
+    @Test
+    public void testRegisterAndUnregisterServiceInfoCallback() throws RemoteException {
+        final NsdManager client = connectClient(mService);
+        final NsdServiceInfo request = new NsdServiceInfo(SERVICE_NAME, SERVICE_TYPE);
+        final NsdManager.ServiceInfoCallback serviceInfoCallback = mock(
+                NsdManager.ServiceInfoCallback.class);
+        client.registerServiceInfoCallback(request, Runnable::run, serviceInfoCallback);
+        waitForIdle();
+
+        final IMDnsEventListener eventListener = getEventListener();
+        final ArgumentCaptor<Integer> resolvIdCaptor = ArgumentCaptor.forClass(Integer.class);
+        verify(mMockMDnsM).resolve(resolvIdCaptor.capture(), eq(SERVICE_NAME), eq(SERVICE_TYPE),
+                eq("local.") /* domain */, eq(IFACE_IDX_ANY));
+
+        // Resolve service successfully.
+        final ResolutionInfo resolutionInfo = new ResolutionInfo(
+                resolvIdCaptor.getValue(),
+                IMDnsEventListener.SERVICE_RESOLVED,
+                null /* serviceName */,
+                null /* serviceType */,
+                null /* domain */,
+                SERVICE_FULL_NAME,
+                DOMAIN_NAME,
+                PORT,
+                new byte[0] /* txtRecord */,
+                IFACE_IDX_ANY);
+        doReturn(true).when(mMockMDnsM).getServiceAddress(anyInt(), any(), anyInt());
+        eventListener.onServiceResolutionStatus(resolutionInfo);
+        waitForIdle();
+
+        final ArgumentCaptor<Integer> getAddrIdCaptor = ArgumentCaptor.forClass(Integer.class);
+        verify(mMockMDnsM).getServiceAddress(getAddrIdCaptor.capture(), eq(DOMAIN_NAME),
+                eq(IFACE_IDX_ANY));
+
+        // First address info
+        final String v4Address = "192.0.2.1";
+        final String v6Address = "2001:db8::";
+        final GetAddressInfo addressInfo1 = new GetAddressInfo(
+                getAddrIdCaptor.getValue(),
+                IMDnsEventListener.SERVICE_GET_ADDR_SUCCESS,
+                SERVICE_FULL_NAME,
+                v4Address,
+                IFACE_IDX_ANY,
+                999 /* netId */);
+        eventListener.onGettingServiceAddressStatus(addressInfo1);
+        waitForIdle();
+
+        final ArgumentCaptor<NsdServiceInfo> updateInfoCaptor =
+                ArgumentCaptor.forClass(NsdServiceInfo.class);
+        verify(serviceInfoCallback, timeout(TIMEOUT_MS).times(1))
+                .onServiceUpdated(updateInfoCaptor.capture());
+        verifyUpdatedServiceInfo(updateInfoCaptor.getAllValues().get(0) /* info */, SERVICE_NAME,
+                "." + SERVICE_TYPE, v4Address, PORT, IFACE_IDX_ANY, new Network(999));
+
+        // Second address info
+        final GetAddressInfo addressInfo2 = new GetAddressInfo(
+                getAddrIdCaptor.getValue(),
+                IMDnsEventListener.SERVICE_GET_ADDR_SUCCESS,
+                SERVICE_FULL_NAME,
+                v6Address,
+                IFACE_IDX_ANY,
+                999 /* netId */);
+        eventListener.onGettingServiceAddressStatus(addressInfo2);
+        waitForIdle();
+
+        verify(serviceInfoCallback, timeout(TIMEOUT_MS).times(2))
+                .onServiceUpdated(updateInfoCaptor.capture());
+        verifyUpdatedServiceInfo(updateInfoCaptor.getAllValues().get(1) /* info */, SERVICE_NAME,
+                "." + SERVICE_TYPE, v6Address, PORT, IFACE_IDX_ANY, new Network(999));
+
+        client.unregisterServiceInfoCallback(serviceInfoCallback);
+        waitForIdle();
+
+        verify(serviceInfoCallback, timeout(TIMEOUT_MS)).onServiceInfoCallbackUnregistered();
+    }
+
+    @Test
+    public void testRegisterServiceCallbackFailed() throws Exception {
+        final NsdManager client = connectClient(mService);
+        final NsdServiceInfo request = new NsdServiceInfo(SERVICE_NAME, SERVICE_TYPE);
+        final NsdManager.ServiceInfoCallback subscribeListener = mock(
+                NsdManager.ServiceInfoCallback.class);
+        client.registerServiceInfoCallback(request, Runnable::run, subscribeListener);
+        waitForIdle();
+
+        final IMDnsEventListener eventListener = getEventListener();
+        final ArgumentCaptor<Integer> resolvIdCaptor = ArgumentCaptor.forClass(Integer.class);
+        verify(mMockMDnsM).resolve(resolvIdCaptor.capture(), eq(SERVICE_NAME), eq(SERVICE_TYPE),
+                eq("local.") /* domain */, eq(IFACE_IDX_ANY));
+
+        // Fail to resolve service.
+        final ResolutionInfo resolutionFailedInfo = new ResolutionInfo(
+                resolvIdCaptor.getValue(),
+                IMDnsEventListener.SERVICE_RESOLUTION_FAILED,
+                null /* serviceName */,
+                null /* serviceType */,
+                null /* domain */,
+                null /* serviceFullName */,
+                null /* domainName */,
+                0 /* port */,
+                new byte[0] /* txtRecord */,
+                IFACE_IDX_ANY);
+        eventListener.onServiceResolutionStatus(resolutionFailedInfo);
+        verify(subscribeListener, timeout(TIMEOUT_MS))
+                .onServiceInfoCallbackRegistrationFailed(eq(FAILURE_BAD_PARAMETERS));
+    }
+
+    @Test
+    public void testUnregisterNotRegisteredCallback() {
+        final NsdManager client = connectClient(mService);
+        final NsdManager.ServiceInfoCallback serviceInfoCallback = mock(
+                NsdManager.ServiceInfoCallback.class);
+
+        assertThrows(IllegalArgumentException.class, () ->
+                client.unregisterServiceInfoCallback(serviceInfoCallback));
+    }
+
     private void makeServiceWithMdnsDiscoveryManagerEnabled() {
         doReturn(true).when(mDeps).isMdnsDiscoveryManagerEnabled(any(Context.class));
         doReturn(mDiscoveryManager).when(mDeps).makeMdnsDiscoveryManager(any(), any());
@@ -582,6 +834,16 @@
         verify(mDeps).makeMdnsSocketProvider(any(), any());
     }
 
+    private void makeServiceWithMdnsAdvertiserEnabled() {
+        doReturn(true).when(mDeps).isMdnsAdvertiserEnabled(any(Context.class));
+        doReturn(mAdvertiser).when(mDeps).makeMdnsAdvertiser(any(), any(), any());
+        doReturn(mSocketProvider).when(mDeps).makeMdnsSocketProvider(any(), any());
+
+        mService = makeService();
+        verify(mDeps).makeMdnsAdvertiser(any(), any(), any());
+        verify(mDeps).makeMdnsSocketProvider(any(), any());
+    }
+
     @Test
     public void testMdnsDiscoveryManagerFeature() {
         // Create NsdService w/o feature enabled.
@@ -733,7 +995,7 @@
         assertTrue(info.getAttributes().containsKey("key"));
         assertEquals(1, info.getAttributes().size());
         assertArrayEquals(new byte[]{(byte) 0xFF, (byte) 0xFE}, info.getAttributes().get("key"));
-        assertEquals(InetAddresses.parseNumericAddress(IPV4_ADDRESS), info.getHost());
+        assertEquals(parseNumericAddress(IPV4_ADDRESS), info.getHost());
         assertEquals(network, info.getNetwork());
 
         // Verify the listener has been unregistered.
@@ -742,6 +1004,102 @@
         verify(mSocketProvider, timeout(CLEANUP_DELAY_MS + TIMEOUT_MS)).stopMonitoringSockets();
     }
 
+    @Test
+    public void testAdvertiseWithMdnsAdvertiser() {
+        makeServiceWithMdnsAdvertiserEnabled();
+
+        final NsdManager client = connectClient(mService);
+        final RegistrationListener regListener = mock(RegistrationListener.class);
+        // final String serviceTypeWithLocalDomain = SERVICE_TYPE + ".local";
+        final ArgumentCaptor<MdnsAdvertiser.AdvertiserCallback> cbCaptor =
+                ArgumentCaptor.forClass(MdnsAdvertiser.AdvertiserCallback.class);
+        verify(mDeps).makeMdnsAdvertiser(any(), any(), cbCaptor.capture());
+
+        final NsdServiceInfo regInfo = new NsdServiceInfo(SERVICE_NAME, SERVICE_TYPE);
+        regInfo.setHost(parseNumericAddress("192.0.2.123"));
+        regInfo.setPort(12345);
+        regInfo.setAttribute("testattr", "testvalue");
+        regInfo.setNetwork(new Network(999));
+
+        client.registerService(regInfo, NsdManager.PROTOCOL_DNS_SD, Runnable::run, regListener);
+        waitForIdle();
+        verify(mSocketProvider).startMonitoringSockets();
+        final ArgumentCaptor<Integer> idCaptor = ArgumentCaptor.forClass(Integer.class);
+        verify(mAdvertiser).addService(idCaptor.capture(), argThat(info ->
+                matches(info, regInfo)));
+
+        // Verify onServiceRegistered callback
+        final MdnsAdvertiser.AdvertiserCallback cb = cbCaptor.getValue();
+        cb.onRegisterServiceSucceeded(idCaptor.getValue(), regInfo);
+
+        verify(regListener, timeout(TIMEOUT_MS)).onServiceRegistered(argThat(info -> matches(info,
+                new NsdServiceInfo(regInfo.getServiceName(), null))));
+
+        client.unregisterService(regListener);
+        waitForIdle();
+        verify(mAdvertiser).removeService(idCaptor.getValue());
+        verify(regListener, timeout(TIMEOUT_MS)).onServiceUnregistered(
+                argThat(info -> matches(info, regInfo)));
+        verify(mSocketProvider, timeout(TIMEOUT_MS)).stopMonitoringSockets();
+    }
+
+    @Test
+    public void testAdvertiseWithMdnsAdvertiser_FailedWithInvalidServiceType() {
+        makeServiceWithMdnsAdvertiserEnabled();
+
+        final NsdManager client = connectClient(mService);
+        final RegistrationListener regListener = mock(RegistrationListener.class);
+        // final String serviceTypeWithLocalDomain = SERVICE_TYPE + ".local";
+        final ArgumentCaptor<MdnsAdvertiser.AdvertiserCallback> cbCaptor =
+                ArgumentCaptor.forClass(MdnsAdvertiser.AdvertiserCallback.class);
+        verify(mDeps).makeMdnsAdvertiser(any(), any(), cbCaptor.capture());
+
+        final NsdServiceInfo regInfo = new NsdServiceInfo(SERVICE_NAME, "invalid_type");
+        regInfo.setHost(parseNumericAddress("192.0.2.123"));
+        regInfo.setPort(12345);
+        regInfo.setAttribute("testattr", "testvalue");
+        regInfo.setNetwork(new Network(999));
+
+        client.registerService(regInfo, NsdManager.PROTOCOL_DNS_SD, Runnable::run, regListener);
+        waitForIdle();
+        verify(mAdvertiser, never()).addService(anyInt(), any());
+
+        verify(regListener, timeout(TIMEOUT_MS)).onRegistrationFailed(
+                argThat(info -> matches(info, regInfo)), eq(FAILURE_INTERNAL_ERROR));
+    }
+
+    @Test
+    public void testAdvertiseWithMdnsAdvertiser_LongServiceName() {
+        makeServiceWithMdnsAdvertiserEnabled();
+
+        final NsdManager client = connectClient(mService);
+        final RegistrationListener regListener = mock(RegistrationListener.class);
+        // final String serviceTypeWithLocalDomain = SERVICE_TYPE + ".local";
+        final ArgumentCaptor<MdnsAdvertiser.AdvertiserCallback> cbCaptor =
+                ArgumentCaptor.forClass(MdnsAdvertiser.AdvertiserCallback.class);
+        verify(mDeps).makeMdnsAdvertiser(any(), any(), cbCaptor.capture());
+
+        final NsdServiceInfo regInfo = new NsdServiceInfo("a".repeat(70), SERVICE_TYPE);
+        regInfo.setHost(parseNumericAddress("192.0.2.123"));
+        regInfo.setPort(12345);
+        regInfo.setAttribute("testattr", "testvalue");
+        regInfo.setNetwork(new Network(999));
+
+        client.registerService(regInfo, NsdManager.PROTOCOL_DNS_SD, Runnable::run, regListener);
+        waitForIdle();
+        final ArgumentCaptor<Integer> idCaptor = ArgumentCaptor.forClass(Integer.class);
+        // Service name is truncated to 63 characters
+        verify(mAdvertiser).addService(idCaptor.capture(),
+                argThat(info -> info.getServiceName().equals("a".repeat(63))));
+
+        // Verify onServiceRegistered callback
+        final MdnsAdvertiser.AdvertiserCallback cb = cbCaptor.getValue();
+        cb.onRegisterServiceSucceeded(idCaptor.getValue(), regInfo);
+
+        verify(regListener, timeout(TIMEOUT_MS)).onServiceRegistered(
+                argThat(info -> matches(info, new NsdServiceInfo(regInfo.getServiceName(), null))));
+    }
+
     private void waitForIdle() {
         HandlerUtils.waitForIdle(mHandler, TIMEOUT_MS);
     }
@@ -786,6 +1144,19 @@
         verify(mMockMDnsM, timeout(cleanupDelayMs + TIMEOUT_MS)).stopDaemon();
     }
 
+    /**
+     * Return true if two service info are the same.
+     *
+     * Useful for argument matchers as {@link NsdServiceInfo} does not implement equals.
+     */
+    private boolean matches(NsdServiceInfo a, NsdServiceInfo b) {
+        return Objects.equals(a.getServiceName(), b.getServiceName())
+                && Objects.equals(a.getServiceType(), b.getServiceType())
+                && Objects.equals(a.getHost(), b.getHost())
+                && Objects.equals(a.getNetwork(), b.getNetwork())
+                && Objects.equals(a.getAttributes(), b.getAttributes());
+    }
+
     public static class TestHandler extends Handler {
         public Message lastMessage;
 
diff --git a/tests/unit/java/com/android/server/VpnManagerServiceTest.java b/tests/unit/java/com/android/server/VpnManagerServiceTest.java
index c8a93a6..deb56ef 100644
--- a/tests/unit/java/com/android/server/VpnManagerServiceTest.java
+++ b/tests/unit/java/com/android/server/VpnManagerServiceTest.java
@@ -131,6 +131,11 @@
                 Vpn vpn, VpnProfile profile) {
             return mLockdownVpnTracker;
         }
+
+        @Override
+        public @UserIdInt int getMainUserId() {
+            return UserHandle.USER_SYSTEM;
+        }
     }
 
     @Before
diff --git a/tests/unit/java/com/android/server/connectivity/KeepaliveTrackerTest.java b/tests/unit/java/com/android/server/connectivity/AutomaticOnOffKeepaliveTrackerTest.java
similarity index 86%
rename from tests/unit/java/com/android/server/connectivity/KeepaliveTrackerTest.java
rename to tests/unit/java/com/android/server/connectivity/AutomaticOnOffKeepaliveTrackerTest.java
index b55ee67..6c29d6e 100644
--- a/tests/unit/java/com/android/server/connectivity/KeepaliveTrackerTest.java
+++ b/tests/unit/java/com/android/server/connectivity/AutomaticOnOffKeepaliveTrackerTest.java
@@ -24,14 +24,12 @@
 import static org.mockito.Mockito.doReturn;
 
 import android.content.Context;
-import android.content.res.Resources;
 import android.net.INetd;
 import android.net.MarkMaskParcel;
 import android.os.Build;
 import android.os.HandlerThread;
 import android.test.suitebuilder.annotation.SmallTest;
 
-import com.android.connectivity.resources.R;
 import com.android.testutils.DevSdkIgnoreRule;
 import com.android.testutils.DevSdkIgnoreRunner;
 
@@ -48,21 +46,19 @@
 
 @RunWith(DevSdkIgnoreRunner.class)
 @SmallTest
-@DevSdkIgnoreRule.IgnoreUpTo(Build.VERSION_CODES.R)
-public class KeepaliveTrackerTest {
-    private static final int[] TEST_SUPPORTED_KEEPALIVES = {1, 3, 0, 0, 0, 0, 0, 0, 0};
+@DevSdkIgnoreRule.IgnoreUpTo(Build.VERSION_CODES.TIRAMISU)
+public class AutomaticOnOffKeepaliveTrackerTest {
     private static final int TEST_NETID = 0xA85;
     private static final int TEST_NETID_FWMARK = 0x0A85;
     private static final int OTHER_NETID = 0x1A85;
     private static final int NETID_MASK = 0xffff;
-    private static final int SUPPORTED_SLOT_COUNT = 2;
-    private KeepaliveTracker mKeepaliveTracker;
+    private AutomaticOnOffKeepaliveTracker mAOOKeepaliveTracker;
     private HandlerThread mHandlerThread;
 
     @Mock INetd mNetd;
-    @Mock KeepaliveTracker.Dependencies mDependencies;
+    @Mock AutomaticOnOffKeepaliveTracker.Dependencies mDependencies;
     @Mock Context mCtx;
-    @Mock Resources mResources;
+    @Mock KeepaliveTracker mKeepaliveTracker;
 
     // Hexadecimal representation of a SOCK_DIAG response with tcp info.
     private static final String SOCK_DIAG_TCP_INET_HEX =
@@ -169,51 +165,43 @@
         doReturn(makeMarkMaskParcel(NETID_MASK, TEST_NETID_FWMARK)).when(mNetd)
                 .getFwmarkForNetwork(TEST_NETID);
 
-        doReturn(TEST_SUPPORTED_KEEPALIVES).when(mDependencies).getSupportedKeepalives();
-        doReturn(mResources).when(mDependencies).newConnectivityResources();
-        mockResource();
         doNothing().when(mDependencies).sendRequest(any(), any());
 
         mHandlerThread = new HandlerThread("KeepaliveTrackerTest");
         mHandlerThread.start();
-
-        mKeepaliveTracker = new KeepaliveTracker(mCtx, mHandlerThread.getThreadHandler(),
-                mDependencies);
-    }
-
-    private void mockResource() {
-        doReturn(SUPPORTED_SLOT_COUNT).when(mResources).getInteger(
-                R.integer.config_reservedPrivilegedKeepaliveSlots);
-        doReturn(SUPPORTED_SLOT_COUNT).when(mResources).getInteger(
-                R.integer.config_allowedUnprivilegedKeepalivePerUid);
+        doReturn(mKeepaliveTracker).when(mDependencies).newKeepaliveTracker(
+                mCtx, mHandlerThread.getThreadHandler());
+        doReturn(true).when(mDependencies).isFeatureEnabled(any());
+        mAOOKeepaliveTracker = new AutomaticOnOffKeepaliveTracker(
+                mCtx, mHandlerThread.getThreadHandler(), mDependencies);
     }
 
     @Test
     public void testIsAnyTcpSocketConnected_runOnNonHandlerThread() throws Exception {
         setupResponseWithSocketExisting();
         assertThrows(IllegalStateException.class,
-                () -> mKeepaliveTracker.isAnyTcpSocketConnected(TEST_NETID));
+                () -> mAOOKeepaliveTracker.isAnyTcpSocketConnected(TEST_NETID));
     }
 
     @Test
     public void testIsAnyTcpSocketConnected_withTargetNetId() throws Exception {
         setupResponseWithSocketExisting();
         mHandlerThread.getThreadHandler().post(
-                () -> assertTrue(mKeepaliveTracker.isAnyTcpSocketConnected(TEST_NETID)));
+                () -> assertTrue(mAOOKeepaliveTracker.isAnyTcpSocketConnected(TEST_NETID)));
     }
 
     @Test
     public void testIsAnyTcpSocketConnected_withIncorrectNetId() throws Exception {
         setupResponseWithSocketExisting();
         mHandlerThread.getThreadHandler().post(
-                () -> assertFalse(mKeepaliveTracker.isAnyTcpSocketConnected(OTHER_NETID)));
+                () -> assertFalse(mAOOKeepaliveTracker.isAnyTcpSocketConnected(OTHER_NETID)));
     }
 
     @Test
     public void testIsAnyTcpSocketConnected_noSocketExists() throws Exception {
         setupResponseWithoutSocketExisting();
         mHandlerThread.getThreadHandler().post(
-                () -> assertFalse(mKeepaliveTracker.isAnyTcpSocketConnected(TEST_NETID)));
+                () -> assertFalse(mAOOKeepaliveTracker.isAnyTcpSocketConnected(TEST_NETID)));
     }
 
     private void setupResponseWithSocketExisting() throws Exception {
diff --git a/tests/unit/java/com/android/server/connectivity/mdns/MdnsInterfaceAdvertiserTest.kt b/tests/unit/java/com/android/server/connectivity/mdns/MdnsInterfaceAdvertiserTest.kt
index 02b3976..4a806b1 100644
--- a/tests/unit/java/com/android/server/connectivity/mdns/MdnsInterfaceAdvertiserTest.kt
+++ b/tests/unit/java/com/android/server/connectivity/mdns/MdnsInterfaceAdvertiserTest.kt
@@ -203,6 +203,59 @@
         verify(replySender).queueReply(mockReply)
     }
 
+    @Test
+    fun testConflict() {
+        addServiceAndFinishProbing(TEST_SERVICE_ID_1, TEST_SERVICE_1)
+        doReturn(setOf(TEST_SERVICE_ID_1)).`when`(repository).getConflictingServices(any())
+
+        // Reply obtained with:
+        // scapy.raw(scapy.DNS(
+        //    qd = None,
+        //    an = scapy.DNSRR(type='TXT', rrname='_testservice._tcp.local'))
+        // ).hex().upper()
+        val query = HexDump.hexStringToByteArray("0000010000000001000000000C5F7465737473657276696" +
+                "365045F746370056C6F63616C0000100001000000000000")
+        val src = InetSocketAddress(parseNumericAddress("2001:db8::456"), MdnsConstants.MDNS_PORT)
+        packetHandler.handlePacket(query, query.size, src)
+
+        val packetCaptor = ArgumentCaptor.forClass(MdnsPacket::class.java)
+        verify(repository).getConflictingServices(packetCaptor.capture())
+
+        packetCaptor.value.let {
+            assertEquals(0, it.questions.size)
+            assertEquals(1, it.answers.size)
+            assertEquals(0, it.authorityRecords.size)
+            assertEquals(0, it.additionalRecords.size)
+
+            assertTrue(it.answers[0] is MdnsTextRecord)
+            assertContentEquals(arrayOf("_testservice", "_tcp", "local"), it.answers[0].name)
+        }
+
+        thread.waitForIdle(TIMEOUT_MS)
+        verify(cb).onServiceConflict(advertiser, TEST_SERVICE_ID_1)
+    }
+
+    @Test
+    fun testRestartProbingForConflict() {
+        val mockProbingInfo = mock(ProbingInfo::class.java)
+        doReturn(mockProbingInfo).`when`(repository).setServiceProbing(TEST_SERVICE_ID_1)
+
+        advertiser.restartProbingForConflict(TEST_SERVICE_ID_1)
+
+        verify(prober).restartForConflict(mockProbingInfo)
+    }
+
+    @Test
+    fun testRenameServiceForConflict() {
+        val mockProbingInfo = mock(ProbingInfo::class.java)
+        doReturn(mockProbingInfo).`when`(repository).renameServiceForConflict(
+                TEST_SERVICE_ID_1, TEST_SERVICE_1)
+
+        advertiser.renameServiceForConflict(TEST_SERVICE_ID_1, TEST_SERVICE_1)
+
+        verify(prober).restartForConflict(mockProbingInfo)
+    }
+
     private fun addServiceAndFinishProbing(serviceId: Int, serviceInfo: NsdServiceInfo):
             AnnouncementInfo {
         val testProbingInfo = mock(ProbingInfo::class.java)
diff --git a/tests/unit/java/com/android/server/connectivity/mdns/MdnsRecordRepositoryTest.kt b/tests/unit/java/com/android/server/connectivity/mdns/MdnsRecordRepositoryTest.kt
index 597663c..ecc11ec 100644
--- a/tests/unit/java/com/android/server/connectivity/mdns/MdnsRecordRepositoryTest.kt
+++ b/tests/unit/java/com/android/server/connectivity/mdns/MdnsRecordRepositoryTest.kt
@@ -24,6 +24,7 @@
 import com.android.server.connectivity.mdns.MdnsAnnouncer.AnnouncementInfo
 import com.android.server.connectivity.mdns.MdnsRecordRepository.Dependencies
 import com.android.server.connectivity.mdns.MdnsRecordRepository.getReverseDnsAddress
+import com.android.server.connectivity.mdns.MdnsServiceInfo.TextEntry
 import com.android.testutils.DevSdkIgnoreRule
 import com.android.testutils.DevSdkIgnoreRunner
 import java.net.InetSocketAddress
@@ -400,6 +401,63 @@
                     intArrayOf(MdnsRecord.TYPE_A, MdnsRecord.TYPE_AAAA)),
         ), reply.additionalAnswers)
     }
+
+    @Test
+    fun testGetConflictingServices() {
+        val repository = MdnsRecordRepository(thread.looper, deps)
+        repository.addService(TEST_SERVICE_ID_1, TEST_SERVICE_1)
+        repository.addService(TEST_SERVICE_ID_2, TEST_SERVICE_2)
+
+        val packet = MdnsPacket(
+                0 /* flags */,
+                emptyList() /* questions */,
+                listOf(
+                    MdnsServiceRecord(
+                            arrayOf("MyTestService", "_testservice", "_tcp", "local"),
+                            0L /* receiptTimeMillis */, true /* cacheFlush */, 0L /* ttlMillis */,
+                            0 /* servicePriority */, 0 /* serviceWeight */,
+                            TEST_SERVICE_1.port + 1,
+                            TEST_HOSTNAME),
+                    MdnsTextRecord(
+                            arrayOf("MyOtherTestService", "_testservice", "_tcp", "local"),
+                            0L /* receiptTimeMillis */, true /* cacheFlush */, 0L /* ttlMillis */,
+                            listOf(TextEntry.fromString("somedifferent=entry"))),
+                ) /* answers */,
+                emptyList() /* authorityRecords */,
+                emptyList() /* additionalRecords */)
+
+        assertEquals(setOf(TEST_SERVICE_ID_1, TEST_SERVICE_ID_2),
+                repository.getConflictingServices(packet))
+    }
+
+    @Test
+    fun testGetConflictingServices_IdenticalService() {
+        val repository = MdnsRecordRepository(thread.looper, deps)
+        repository.addService(TEST_SERVICE_ID_1, TEST_SERVICE_1)
+        repository.addService(TEST_SERVICE_ID_2, TEST_SERVICE_2)
+
+        val otherTtlMillis = 1234L
+        val packet = MdnsPacket(
+                0 /* flags */,
+                emptyList() /* questions */,
+                listOf(
+                        MdnsServiceRecord(
+                                arrayOf("MyTestService", "_testservice", "_tcp", "local"),
+                                0L /* receiptTimeMillis */, true /* cacheFlush */,
+                                otherTtlMillis, 0 /* servicePriority */, 0 /* serviceWeight */,
+                                TEST_SERVICE_1.port,
+                                TEST_HOSTNAME),
+                        MdnsTextRecord(
+                                arrayOf("MyOtherTestService", "_testservice", "_tcp", "local"),
+                                0L /* receiptTimeMillis */, true /* cacheFlush */,
+                                otherTtlMillis, emptyList()),
+                ) /* answers */,
+                emptyList() /* authorityRecords */,
+                emptyList() /* additionalRecords */)
+
+        // Above records are identical to the actual registrations: no conflict
+        assertEquals(emptySet(), repository.getConflictingServices(packet))
+    }
 }
 
 private fun MdnsRecordRepository.initWithService(serviceId: Int, serviceInfo: NsdServiceInfo):
diff --git a/tools/gn2bp/Android.bp.swp b/tools/gn2bp/Android.bp.swp
index ebf1a9b..c881767 100644
--- a/tools/gn2bp/Android.bp.swp
+++ b/tools/gn2bp/Android.bp.swp
@@ -14,6 +14,13 @@
 //
 // This file is automatically generated by gen_android_bp. Do not edit.
 
+// GN: PACKAGE
+package {
+    default_applicable_licenses: [
+        "external_cronet_license",
+    ],
+}
+
 // GN: //components/cronet/android:cronet_api_java
 java_library {
     name: "cronet_aml_api_java",
@@ -22,11 +29,13 @@
     ],
     libs: [
         "androidx.annotation_annotation",
+        "framework-annotations-lib",
     ],
     sdk_version: "module_current",
 }
 
 // GN: //components/cronet/android:cronet_api_java
+// TODO(danstahr): add the API helpers separately after the main API is checked in and thoroughly reviewed
 filegroup {
     name: "cronet_aml_api_sources",
     srcs: [
@@ -52,18 +61,6 @@
         "components/cronet/android/api/src/android/net/http/UploadDataSink.java",
         "components/cronet/android/api/src/android/net/http/UrlRequest.java",
         "components/cronet/android/api/src/android/net/http/UrlResponseInfo.java",
-        "components/cronet/android/api/src/android/net/http/apihelpers/ByteArrayCallback.java",
-        "components/cronet/android/api/src/android/net/http/apihelpers/ContentTypeParametersParser.java",
-        "components/cronet/android/api/src/android/net/http/apihelpers/HttpResponse.java",
-        "components/cronet/android/api/src/android/net/http/apihelpers/ImplicitFlowControlCallback.java",
-        "components/cronet/android/api/src/android/net/http/apihelpers/InMemoryTransformCallback.java",
-        "components/cronet/android/api/src/android/net/http/apihelpers/JsonCallback.java",
-        "components/cronet/android/api/src/android/net/http/apihelpers/RedirectHandler.java",
-        "components/cronet/android/api/src/android/net/http/apihelpers/RedirectHandlers.java",
-        "components/cronet/android/api/src/android/net/http/apihelpers/RequestCompletionListener.java",
-        "components/cronet/android/api/src/android/net/http/apihelpers/StringCallback.java",
-        "components/cronet/android/api/src/android/net/http/apihelpers/UploadDataProviders.java",
-        "components/cronet/android/api/src/android/net/http/apihelpers/UrlRequestCallbacks.java",
     ],
 }
 
@@ -2462,8 +2459,8 @@
         "third_party/protobuf/src/",
     ],
     cpp_std: "c++17",
-    linker_scripts: [
-        "base/android/library_loader/anchor_functions.lds",
+    ldflags: [
+        "-Wl,--script,external/cronet/base/android/library_loader/anchor_functions.lds",
     ],
     stem: "libcronet.108.0.5359.128",
     target: {
@@ -10645,3 +10642,55 @@
     ],
 }
 
+// GN: LICENSE
+license {
+    name: "external_cronet_license",
+    license_kinds: [
+        "SPDX-license-identifier-AFL-2.0",
+        "SPDX-license-identifier-Apache-2.0",
+        "SPDX-license-identifier-BSD",
+        "SPDX-license-identifier-BSL-1.0",
+        "SPDX-license-identifier-GPL",
+        "SPDX-license-identifier-GPL-2.0",
+        "SPDX-license-identifier-GPL-3.0",
+        "SPDX-license-identifier-ICU",
+        "SPDX-license-identifier-ISC",
+        "SPDX-license-identifier-LGPL",
+        "SPDX-license-identifier-LGPL-2.1",
+        "SPDX-license-identifier-MIT",
+        "SPDX-license-identifier-MPL",
+        "SPDX-license-identifier-MPL-2.0",
+        "SPDX-license-identifier-NCSA",
+        "SPDX-license-identifier-OpenSSL",
+        "SPDX-license-identifier-Unicode-DFS",
+        "legacy_unencumbered",
+    ],
+    license_text: [
+        "LICENSE",
+        "base/third_party/double_conversion/LICENSE",
+        "base/third_party/dynamic_annotations/LICENSE",
+        "base/third_party/icu/LICENSE",
+        "base/third_party/nspr/LICENSE",
+        "base/third_party/superfasthash/LICENSE",
+        "base/third_party/symbolize/LICENSE",
+        "base/third_party/valgrind/LICENSE",
+        "base/third_party/xdg_user_dirs/LICENSE",
+        "net/third_party/quiche/src/LICENSE",
+        "net/third_party/uri_template/LICENSE",
+        "third_party/abseil-cpp/LICENSE",
+        "third_party/ashmem/LICENSE",
+        "third_party/boringssl/src/LICENSE",
+        "third_party/boringssl/src/third_party/fiat/LICENSE",
+        "third_party/boringssl/src/third_party/googletest/LICENSE",
+        "third_party/boringssl/src/third_party/wycheproof_testvectors/LICENSE",
+        "third_party/brotli/LICENSE",
+        "third_party/icu/LICENSE",
+        "third_party/icu/scripts/LICENSE",
+        "third_party/libevent/LICENSE",
+        "third_party/metrics_proto/LICENSE",
+        "third_party/modp_b64/LICENSE",
+        "third_party/protobuf/LICENSE",
+        "third_party/protobuf/third_party/utf8_range/LICENSE",
+    ],
+}
+
diff --git a/tools/gn2bp/gen_android_bp b/tools/gn2bp/gen_android_bp
index e10c415..6ae3609 100755
--- a/tools/gn2bp/gen_android_bp
+++ b/tools/gn2bp/gen_android_bp
@@ -128,12 +128,17 @@
   "-msse4.2",
 ]
 
+def get_linker_script_ldflag(script_path):
+  return f'-Wl,--script,{tree_path}/{script_path}'
+
 # Additional arguments to apply to Android.bp rules.
 additional_args = {
     # TODO: remove if not needed.
     'cronet_aml_components_cronet_android_cronet': [
-        ('linker_scripts', {
-            'base/android/library_loader/anchor_functions.lds',
+        # linker_scripts property is not available in tm-mainline-prod.
+        # So use ldflags to specify linker script.
+        ('ldflags',{
+          get_linker_script_ldflag('base/android/library_loader/anchor_functions.lds'),
         }),
     ],
     'cronet_aml_net_net': [
@@ -370,6 +375,7 @@
     self.min_sdk_version = None
     self.proto = dict()
     self.linker_scripts = set()
+    self.ldflags = set()
     # The genrule_XXX below are properties that must to be propagated back
     # on the module(s) that depend on the genrule.
     self.genrule_headers = set()
@@ -391,6 +397,9 @@
     self.processor_class = None
     self.sdk_version = None
     self.javacflags = set()
+    self.license_kinds = set()
+    self.license_text = set()
+    self.default_applicable_licenses = set()
 
   def to_string(self, output):
     if self.comment:
@@ -437,6 +446,7 @@
     self._output_field(output, 'stubs')
     self._output_field(output, 'proto')
     self._output_field(output, 'linker_scripts')
+    self._output_field(output, 'ldflags')
     self._output_field(output, 'cppflags')
     self._output_field(output, 'libs')
     self._output_field(output, 'stem')
@@ -446,6 +456,9 @@
     self._output_field(output, 'processor_class')
     self._output_field(output, 'sdk_version')
     self._output_field(output, 'javacflags')
+    self._output_field(output, 'license_kinds')
+    self._output_field(output, 'license_text')
+    self._output_field(output, 'default_applicable_licenses')
     if self.rtti:
       self._output_field(output, 'rtti')
 
@@ -1551,8 +1564,12 @@
 
 def create_java_api_module(blueprint, gn):
   source_module = Module('filegroup', module_prefix + 'api_sources', java_api_target_name)
+  # TODO add the API helpers separately after the main API is checked in and thoroughly reviewed
   source_module.srcs.update([gn_utils.label_to_path(source)
-                             for source in get_api_java_sources(gn)])
+                             for source in get_api_java_sources(gn)
+                             if "apihelpers" not in source])
+  source_module.comment += "\n// TODO(danstahr): add the API helpers separately after the main" \
+                           " API is checked in and thoroughly reviewed"
   source_module.srcs.update([
     ':' + create_action_module(blueprint, gn.get_target(dep), 'java_genrule').name
     for dep in get_api_java_actions(gn)])
@@ -1563,6 +1580,7 @@
   java_module.sdk_version = "module_current"
   java_module.libs = {
       "androidx.annotation_annotation",
+      "framework-annotations-lib",
     }
   blueprint.add_module(java_module)
   return java_module
@@ -1647,6 +1665,59 @@
 
   return blueprint
 
+def create_license_module(blueprint):
+  module = Module("license", "external_cronet_license", "LICENSE")
+  module.license_kinds.update({
+      'SPDX-license-identifier-LGPL-2.1',
+      'SPDX-license-identifier-GPL-2.0',
+      'SPDX-license-identifier-MPL',
+      'SPDX-license-identifier-ISC',
+      'SPDX-license-identifier-GPL',
+      'SPDX-license-identifier-AFL-2.0',
+      'SPDX-license-identifier-MPL-2.0',
+      'SPDX-license-identifier-BSD',
+      'SPDX-license-identifier-Apache-2.0',
+      'SPDX-license-identifier-BSL-1.0',
+      'SPDX-license-identifier-LGPL',
+      'SPDX-license-identifier-GPL-3.0',
+      'SPDX-license-identifier-Unicode-DFS',
+      'SPDX-license-identifier-NCSA',
+      'SPDX-license-identifier-OpenSSL',
+      'SPDX-license-identifier-MIT',
+      "SPDX-license-identifier-ICU",
+      'legacy_unencumbered', # public domain
+  })
+  module.license_text.update({
+      "LICENSE",
+      "net/third_party/uri_template/LICENSE",
+      "net/third_party/quiche/src/LICENSE",
+      "base/third_party/symbolize/LICENSE",
+      "base/third_party/superfasthash/LICENSE",
+      "base/third_party/xdg_user_dirs/LICENSE",
+      "base/third_party/double_conversion/LICENSE",
+      "base/third_party/nspr/LICENSE",
+      "base/third_party/dynamic_annotations/LICENSE",
+      "base/third_party/icu/LICENSE",
+      "base/third_party/valgrind/LICENSE",
+      "third_party/brotli/LICENSE",
+      "third_party/protobuf/LICENSE",
+      "third_party/protobuf/third_party/utf8_range/LICENSE",
+      "third_party/metrics_proto/LICENSE",
+      "third_party/boringssl/src/LICENSE",
+      "third_party/boringssl/src/third_party/googletest/LICENSE",
+      "third_party/boringssl/src/third_party/wycheproof_testvectors/LICENSE",
+      "third_party/boringssl/src/third_party/fiat/LICENSE",
+      "third_party/libevent/LICENSE",
+      "third_party/ashmem/LICENSE",
+      "third_party/icu/LICENSE",
+      "third_party/icu/scripts/LICENSE",
+      "third_party/abseil-cpp/LICENSE",
+      "third_party/modp_b64/LICENSE",
+  })
+  default_license = Module("package", "", "PACKAGE")
+  default_license.default_applicable_licenses.add(module.name)
+  blueprint.add_module(module)
+  blueprint.add_module(default_license)
 
 def main():
   parser = argparse.ArgumentParser(
@@ -1698,7 +1769,7 @@
   # Add any proto groups to the blueprint.
   for l_name, t_names in proto_groups.items():
     create_proto_group_modules(blueprint, gn, l_name, t_names)
-
+  create_license_module(blueprint)
   output = [
       """// Copyright (C) 2022 The Android Open Source Project
 //