Centralize nsd associated files
Move all nsd associated files include framework, service and test
to package/Nsd first. After clear all hidden API dependencies, we
can easily migrate these files into connectivity mainline module.
Bug: 206893064
Test: atest FrameworksNetTests CtsNetTestCases
Change-Id: Id26f471a10fe7882e31ccc2dbb73219461f00dbd
diff --git a/packages/Nsd/framework/Android.bp b/packages/Nsd/framework/Android.bp
new file mode 100644
index 0000000..2363a9f
--- /dev/null
+++ b/packages/Nsd/framework/Android.bp
@@ -0,0 +1,54 @@
+//
+// 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 {
+ // See: http://go/android-license-faq
+ default_applicable_licenses: ["Android-Apache-2.0"],
+}
+
+filegroup {
+ name: "framework-connectivity-nsd-internal-sources",
+ srcs: [
+ "src/**/*.java",
+ "src/**/*.aidl",
+ ],
+ path: "src",
+ visibility: [
+ "//visibility:private",
+ ],
+}
+
+filegroup {
+ name: "framework-connectivity-nsd-aidl-export-sources",
+ srcs: [
+ "aidl-export/**/*.aidl",
+ ],
+ path: "aidl-export",
+ visibility: [
+ "//visibility:private",
+ ],
+}
+
+filegroup {
+ name: "framework-connectivity-nsd-sources",
+ srcs: [
+ ":framework-connectivity-nsd-internal-sources",
+ ":framework-connectivity-nsd-aidl-export-sources",
+ ],
+ visibility: [
+ "//frameworks/base",
+ ],
+}
diff --git a/packages/Nsd/framework/aidl-export/android/net/nsd/NsdServiceInfo.aidl b/packages/Nsd/framework/aidl-export/android/net/nsd/NsdServiceInfo.aidl
new file mode 100644
index 0000000..657bdd1
--- /dev/null
+++ b/packages/Nsd/framework/aidl-export/android/net/nsd/NsdServiceInfo.aidl
@@ -0,0 +1,19 @@
+/*
+ * 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 android.net.nsd;
+
+@JavaOnlyStableParcelable parcelable NsdServiceInfo;
\ No newline at end of file
diff --git a/packages/Nsd/framework/src/android/net/nsd/INsdManager.aidl b/packages/Nsd/framework/src/android/net/nsd/INsdManager.aidl
new file mode 100644
index 0000000..89e9cdb
--- /dev/null
+++ b/packages/Nsd/framework/src/android/net/nsd/INsdManager.aidl
@@ -0,0 +1,30 @@
+/**
+ * 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 android.net.nsd;
+
+import android.net.nsd.INsdManagerCallback;
+import android.net.nsd.INsdServiceConnector;
+import android.os.Messenger;
+
+/**
+ * Interface that NsdService implements to connect NsdManager clients.
+ *
+ * {@hide}
+ */
+interface INsdManager {
+ INsdServiceConnector connect(INsdManagerCallback cb);
+}
diff --git a/packages/Nsd/framework/src/android/net/nsd/INsdManagerCallback.aidl b/packages/Nsd/framework/src/android/net/nsd/INsdManagerCallback.aidl
new file mode 100644
index 0000000..1a262ec
--- /dev/null
+++ b/packages/Nsd/framework/src/android/net/nsd/INsdManagerCallback.aidl
@@ -0,0 +1,39 @@
+/**
+ * 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 android.net.nsd;
+
+import android.os.Messenger;
+import android.net.nsd.NsdServiceInfo;
+
+/**
+ * Callbacks from NsdService to NsdManager
+ * @hide
+ */
+oneway interface INsdManagerCallback {
+ void onDiscoverServicesStarted(int listenerKey, in NsdServiceInfo info);
+ void onDiscoverServicesFailed(int listenerKey, int error);
+ void onServiceFound(int listenerKey, in NsdServiceInfo info);
+ void onServiceLost(int listenerKey, in NsdServiceInfo info);
+ void onStopDiscoveryFailed(int listenerKey, int error);
+ void onStopDiscoverySucceeded(int listenerKey);
+ void onRegisterServiceFailed(int listenerKey, int error);
+ void onRegisterServiceSucceeded(int listenerKey, in NsdServiceInfo info);
+ void onUnregisterServiceFailed(int listenerKey, int error);
+ void onUnregisterServiceSucceeded(int listenerKey);
+ void onResolveServiceFailed(int listenerKey, int error);
+ void onResolveServiceSucceeded(int listenerKey, in NsdServiceInfo info);
+}
diff --git a/packages/Nsd/framework/src/android/net/nsd/INsdServiceConnector.aidl b/packages/Nsd/framework/src/android/net/nsd/INsdServiceConnector.aidl
new file mode 100644
index 0000000..b06ae55
--- /dev/null
+++ b/packages/Nsd/framework/src/android/net/nsd/INsdServiceConnector.aidl
@@ -0,0 +1,35 @@
+/**
+ * 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 android.net.nsd;
+
+import android.net.nsd.INsdManagerCallback;
+import android.net.nsd.NsdServiceInfo;
+import android.os.Messenger;
+
+/**
+ * Interface that NsdService implements for each NsdManager client.
+ *
+ * {@hide}
+ */
+interface INsdServiceConnector {
+ void registerService(int listenerKey, in NsdServiceInfo serviceInfo);
+ void unregisterService(int listenerKey);
+ void discoverServices(int listenerKey, in NsdServiceInfo serviceInfo);
+ void stopDiscovery(int listenerKey);
+ void resolveService(int listenerKey, in NsdServiceInfo serviceInfo);
+ void startDaemon();
+}
\ No newline at end of file
diff --git a/packages/Nsd/framework/src/android/net/nsd/NsdManager.java b/packages/Nsd/framework/src/android/net/nsd/NsdManager.java
new file mode 100644
index 0000000..6c597e2
--- /dev/null
+++ b/packages/Nsd/framework/src/android/net/nsd/NsdManager.java
@@ -0,0 +1,734 @@
+/*
+ * 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 android.net.nsd;
+
+import static com.android.internal.util.Preconditions.checkArgument;
+import static com.android.internal.util.Preconditions.checkNotNull;
+import static com.android.internal.util.Preconditions.checkStringNotEmpty;
+
+import android.annotation.SdkConstant;
+import android.annotation.SdkConstant.SdkConstantType;
+import android.annotation.SystemService;
+import android.app.compat.CompatChanges;
+import android.compat.annotation.ChangeId;
+import android.compat.annotation.EnabledSince;
+import android.content.Context;
+import android.os.Handler;
+import android.os.HandlerThread;
+import android.os.Looper;
+import android.os.Message;
+import android.os.RemoteException;
+import android.util.Log;
+import android.util.SparseArray;
+
+import com.android.internal.annotations.VisibleForTesting;
+import com.android.internal.util.Protocol;
+
+/**
+ * The Network Service Discovery Manager class provides the API to discover services
+ * on a network. As an example, if device A and device B are connected over a Wi-Fi
+ * network, a game registered on device A can be discovered by a game on device
+ * B. Another example use case is an application discovering printers on the network.
+ *
+ * <p> The API currently supports DNS based service discovery and discovery is currently
+ * limited to a local network over Multicast DNS. DNS service discovery is described at
+ * http://files.dns-sd.org/draft-cheshire-dnsext-dns-sd.txt
+ *
+ * <p> The API is asynchronous, and responses to requests from an application are on listener
+ * callbacks on a separate internal thread.
+ *
+ * <p> There are three main operations the API supports - registration, discovery and resolution.
+ * <pre>
+ * Application start
+ * |
+ * |
+ * | onServiceRegistered()
+ * Register any local services /
+ * to be advertised with \
+ * registerService() onRegistrationFailed()
+ * |
+ * |
+ * discoverServices()
+ * |
+ * Maintain a list to track
+ * discovered services
+ * |
+ * |--------->
+ * | |
+ * | onServiceFound()
+ * | |
+ * | add service to list
+ * | |
+ * |<----------
+ * |
+ * |--------->
+ * | |
+ * | onServiceLost()
+ * | |
+ * | remove service from list
+ * | |
+ * |<----------
+ * |
+ * |
+ * | Connect to a service
+ * | from list ?
+ * |
+ * resolveService()
+ * |
+ * onServiceResolved()
+ * |
+ * Establish connection to service
+ * with the host and port information
+ *
+ * </pre>
+ * An application that needs to advertise itself over a network for other applications to
+ * discover it can do so with a call to {@link #registerService}. If Example is a http based
+ * application that can provide HTML data to peer services, it can register a name "Example"
+ * with service type "_http._tcp". A successful registration is notified with a callback to
+ * {@link RegistrationListener#onServiceRegistered} and a failure to register is notified
+ * over {@link RegistrationListener#onRegistrationFailed}
+ *
+ * <p> A peer application looking for http services can initiate a discovery for "_http._tcp"
+ * with a call to {@link #discoverServices}. A service found is notified with a callback
+ * to {@link DiscoveryListener#onServiceFound} and a service lost is notified on
+ * {@link DiscoveryListener#onServiceLost}.
+ *
+ * <p> Once the peer application discovers the "Example" http service, and either needs to read the
+ * attributes of the service or wants to receive data from the "Example" application, it can
+ * initiate a resolve with {@link #resolveService} to resolve the attributes, host, and port
+ * details. A successful resolve is notified on {@link ResolveListener#onServiceResolved} and a
+ * failure is notified on {@link ResolveListener#onResolveFailed}.
+ *
+ * Applications can reserve for a service type at
+ * http://www.iana.org/form/ports-service. Existing services can be found at
+ * http://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xml
+ *
+ * {@see NsdServiceInfo}
+ */
+@SystemService(Context.NSD_SERVICE)
+public final class NsdManager {
+ private static final String TAG = NsdManager.class.getSimpleName();
+ private static final boolean DBG = false;
+
+ /**
+ * When enabled, apps targeting < Android 12 are considered legacy for
+ * the NSD native daemon.
+ * The platform will only keep the daemon running as long as there are
+ * any legacy apps connected.
+ *
+ * After Android 12, directly communicate with native daemon might not
+ * work since the native damon won't always stay alive.
+ * Use the NSD APIs from NsdManager as the replacement is recommended.
+ * An another alternative could be bundling your own mdns solutions instead of
+ * depending on the system mdns native daemon.
+ *
+ * @hide
+ */
+ @ChangeId
+ @EnabledSince(targetSdkVersion = android.os.Build.VERSION_CODES.S)
+ public static final long RUN_NATIVE_NSD_ONLY_IF_LEGACY_APPS = 191844585L;
+
+ /**
+ * Broadcast intent action to indicate whether network service discovery is
+ * enabled or disabled. An extra {@link #EXTRA_NSD_STATE} provides the state
+ * information as int.
+ *
+ * @see #EXTRA_NSD_STATE
+ */
+ @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
+ public static final String ACTION_NSD_STATE_CHANGED = "android.net.nsd.STATE_CHANGED";
+
+ /**
+ * The lookup key for an int that indicates whether network service discovery is enabled
+ * or disabled. Retrieve it with {@link android.content.Intent#getIntExtra(String,int)}.
+ *
+ * @see #NSD_STATE_DISABLED
+ * @see #NSD_STATE_ENABLED
+ */
+ public static final String EXTRA_NSD_STATE = "nsd_state";
+
+ /**
+ * Network service discovery is disabled
+ *
+ * @see #ACTION_NSD_STATE_CHANGED
+ */
+ public static final int NSD_STATE_DISABLED = 1;
+
+ /**
+ * Network service discovery is enabled
+ *
+ * @see #ACTION_NSD_STATE_CHANGED
+ */
+ public static final int NSD_STATE_ENABLED = 2;
+
+ private static final int BASE = Protocol.BASE_NSD_MANAGER;
+
+ /** @hide */
+ public static final int DISCOVER_SERVICES = BASE + 1;
+ /** @hide */
+ public static final int DISCOVER_SERVICES_STARTED = BASE + 2;
+ /** @hide */
+ public static final int DISCOVER_SERVICES_FAILED = BASE + 3;
+ /** @hide */
+ public static final int SERVICE_FOUND = BASE + 4;
+ /** @hide */
+ public static final int SERVICE_LOST = BASE + 5;
+
+ /** @hide */
+ public static final int STOP_DISCOVERY = BASE + 6;
+ /** @hide */
+ public static final int STOP_DISCOVERY_FAILED = BASE + 7;
+ /** @hide */
+ public static final int STOP_DISCOVERY_SUCCEEDED = BASE + 8;
+
+ /** @hide */
+ public static final int REGISTER_SERVICE = BASE + 9;
+ /** @hide */
+ public static final int REGISTER_SERVICE_FAILED = BASE + 10;
+ /** @hide */
+ public static final int REGISTER_SERVICE_SUCCEEDED = BASE + 11;
+
+ /** @hide */
+ public static final int UNREGISTER_SERVICE = BASE + 12;
+ /** @hide */
+ public static final int UNREGISTER_SERVICE_FAILED = BASE + 13;
+ /** @hide */
+ public static final int UNREGISTER_SERVICE_SUCCEEDED = BASE + 14;
+
+ /** @hide */
+ public static final int RESOLVE_SERVICE = BASE + 18;
+ /** @hide */
+ public static final int RESOLVE_SERVICE_FAILED = BASE + 19;
+ /** @hide */
+ public static final int RESOLVE_SERVICE_SUCCEEDED = BASE + 20;
+
+ /** @hide */
+ public static final int DAEMON_CLEANUP = BASE + 21;
+
+ /** @hide */
+ public static final int DAEMON_STARTUP = BASE + 22;
+
+ /** @hide */
+ public static final int ENABLE = BASE + 24;
+ /** @hide */
+ public static final int DISABLE = BASE + 25;
+
+ /** @hide */
+ public static final int NATIVE_DAEMON_EVENT = BASE + 26;
+
+ /** @hide */
+ public static final int REGISTER_CLIENT = BASE + 27;
+ /** @hide */
+ public static final int UNREGISTER_CLIENT = BASE + 28;
+
+ /** Dns based service discovery protocol */
+ public static final int PROTOCOL_DNS_SD = 0x0001;
+
+ private static final SparseArray<String> EVENT_NAMES = new SparseArray<>();
+ static {
+ EVENT_NAMES.put(DISCOVER_SERVICES, "DISCOVER_SERVICES");
+ EVENT_NAMES.put(DISCOVER_SERVICES_STARTED, "DISCOVER_SERVICES_STARTED");
+ EVENT_NAMES.put(DISCOVER_SERVICES_FAILED, "DISCOVER_SERVICES_FAILED");
+ EVENT_NAMES.put(SERVICE_FOUND, "SERVICE_FOUND");
+ EVENT_NAMES.put(SERVICE_LOST, "SERVICE_LOST");
+ EVENT_NAMES.put(STOP_DISCOVERY, "STOP_DISCOVERY");
+ EVENT_NAMES.put(STOP_DISCOVERY_FAILED, "STOP_DISCOVERY_FAILED");
+ EVENT_NAMES.put(STOP_DISCOVERY_SUCCEEDED, "STOP_DISCOVERY_SUCCEEDED");
+ EVENT_NAMES.put(REGISTER_SERVICE, "REGISTER_SERVICE");
+ EVENT_NAMES.put(REGISTER_SERVICE_FAILED, "REGISTER_SERVICE_FAILED");
+ EVENT_NAMES.put(REGISTER_SERVICE_SUCCEEDED, "REGISTER_SERVICE_SUCCEEDED");
+ EVENT_NAMES.put(UNREGISTER_SERVICE, "UNREGISTER_SERVICE");
+ EVENT_NAMES.put(UNREGISTER_SERVICE_FAILED, "UNREGISTER_SERVICE_FAILED");
+ EVENT_NAMES.put(UNREGISTER_SERVICE_SUCCEEDED, "UNREGISTER_SERVICE_SUCCEEDED");
+ EVENT_NAMES.put(RESOLVE_SERVICE, "RESOLVE_SERVICE");
+ EVENT_NAMES.put(RESOLVE_SERVICE_FAILED, "RESOLVE_SERVICE_FAILED");
+ EVENT_NAMES.put(RESOLVE_SERVICE_SUCCEEDED, "RESOLVE_SERVICE_SUCCEEDED");
+ EVENT_NAMES.put(DAEMON_CLEANUP, "DAEMON_CLEANUP");
+ EVENT_NAMES.put(DAEMON_STARTUP, "DAEMON_STARTUP");
+ EVENT_NAMES.put(ENABLE, "ENABLE");
+ EVENT_NAMES.put(DISABLE, "DISABLE");
+ EVENT_NAMES.put(NATIVE_DAEMON_EVENT, "NATIVE_DAEMON_EVENT");
+ }
+
+ /** @hide */
+ public static String nameOf(int event) {
+ String name = EVENT_NAMES.get(event);
+ if (name == null) {
+ return Integer.toString(event);
+ }
+ return name;
+ }
+
+ private static final int FIRST_LISTENER_KEY = 1;
+
+ private final INsdServiceConnector mService;
+ private final Context mContext;
+
+ private int mListenerKey = FIRST_LISTENER_KEY;
+ private final SparseArray mListenerMap = new SparseArray();
+ private final SparseArray<NsdServiceInfo> mServiceMap = new SparseArray<>();
+ private final Object mMapLock = new Object();
+
+ private final ServiceHandler mHandler;
+
+ /**
+ * Create a new Nsd instance. Applications use
+ * {@link android.content.Context#getSystemService Context.getSystemService()} to retrieve
+ * {@link android.content.Context#NSD_SERVICE Context.NSD_SERVICE}.
+ * @param service the Binder interface
+ * @hide - hide this because it takes in a parameter of type INsdManager, which
+ * is a system private class.
+ */
+ public NsdManager(Context context, INsdManager service) {
+ mContext = context;
+
+ HandlerThread t = new HandlerThread("NsdManager");
+ t.start();
+ mHandler = new ServiceHandler(t.getLooper());
+
+ try {
+ mService = service.connect(new NsdCallbackImpl(mHandler));
+ } catch (RemoteException e) {
+ throw new RuntimeException("Failed to connect to NsdService");
+ }
+
+ // Only proactively start the daemon if the target SDK < S, otherwise the internal service
+ // would automatically start/stop the native daemon as needed.
+ if (!CompatChanges.isChangeEnabled(RUN_NATIVE_NSD_ONLY_IF_LEGACY_APPS)) {
+ try {
+ mService.startDaemon();
+ } catch (RemoteException e) {
+ Log.e(TAG, "Failed to proactively start daemon");
+ // Continue: the daemon can still be started on-demand later
+ }
+ }
+ }
+
+ private static class NsdCallbackImpl extends INsdManagerCallback.Stub {
+ private final Handler mServHandler;
+
+ NsdCallbackImpl(Handler serviceHandler) {
+ mServHandler = serviceHandler;
+ }
+
+ private void sendInfo(int message, int listenerKey, NsdServiceInfo info) {
+ mServHandler.sendMessage(mServHandler.obtainMessage(message, 0, listenerKey, info));
+ }
+
+ private void sendError(int message, int listenerKey, int error) {
+ mServHandler.sendMessage(mServHandler.obtainMessage(message, error, listenerKey));
+ }
+
+ private void sendNoArg(int message, int listenerKey) {
+ mServHandler.sendMessage(mServHandler.obtainMessage(message, 0, listenerKey));
+ }
+
+ @Override
+ public void onDiscoverServicesStarted(int listenerKey, NsdServiceInfo info) {
+ sendInfo(DISCOVER_SERVICES_STARTED, listenerKey, info);
+ }
+
+ @Override
+ public void onDiscoverServicesFailed(int listenerKey, int error) {
+ sendError(DISCOVER_SERVICES_FAILED, listenerKey, error);
+ }
+
+ @Override
+ public void onServiceFound(int listenerKey, NsdServiceInfo info) {
+ sendInfo(SERVICE_FOUND, listenerKey, info);
+ }
+
+ @Override
+ public void onServiceLost(int listenerKey, NsdServiceInfo info) {
+ sendInfo(SERVICE_LOST, listenerKey, info);
+ }
+
+ @Override
+ public void onStopDiscoveryFailed(int listenerKey, int error) {
+ sendError(STOP_DISCOVERY_FAILED, listenerKey, error);
+ }
+
+ @Override
+ public void onStopDiscoverySucceeded(int listenerKey) {
+ sendNoArg(STOP_DISCOVERY_SUCCEEDED, listenerKey);
+ }
+
+ @Override
+ public void onRegisterServiceFailed(int listenerKey, int error) {
+ sendError(REGISTER_SERVICE_FAILED, listenerKey, error);
+ }
+
+ @Override
+ public void onRegisterServiceSucceeded(int listenerKey, NsdServiceInfo info) {
+ sendInfo(REGISTER_SERVICE_SUCCEEDED, listenerKey, info);
+ }
+
+ @Override
+ public void onUnregisterServiceFailed(int listenerKey, int error) {
+ sendError(UNREGISTER_SERVICE_FAILED, listenerKey, error);
+ }
+
+ @Override
+ public void onUnregisterServiceSucceeded(int listenerKey) {
+ sendNoArg(UNREGISTER_SERVICE_SUCCEEDED, listenerKey);
+ }
+
+ @Override
+ public void onResolveServiceFailed(int listenerKey, int error) {
+ sendError(RESOLVE_SERVICE_FAILED, listenerKey, error);
+ }
+
+ @Override
+ public void onResolveServiceSucceeded(int listenerKey, NsdServiceInfo info) {
+ sendInfo(RESOLVE_SERVICE_SUCCEEDED, listenerKey, info);
+ }
+ }
+
+ /**
+ * Failures are passed with {@link RegistrationListener#onRegistrationFailed},
+ * {@link RegistrationListener#onUnregistrationFailed},
+ * {@link DiscoveryListener#onStartDiscoveryFailed},
+ * {@link DiscoveryListener#onStopDiscoveryFailed} or {@link ResolveListener#onResolveFailed}.
+ *
+ * Indicates that the operation failed due to an internal error.
+ */
+ public static final int FAILURE_INTERNAL_ERROR = 0;
+
+ /**
+ * Indicates that the operation failed because it is already active.
+ */
+ public static final int FAILURE_ALREADY_ACTIVE = 3;
+
+ /**
+ * Indicates that the operation failed because the maximum outstanding
+ * requests from the applications have reached.
+ */
+ public static final int FAILURE_MAX_LIMIT = 4;
+
+ /** Interface for callback invocation for service discovery */
+ public interface DiscoveryListener {
+
+ public void onStartDiscoveryFailed(String serviceType, int errorCode);
+
+ public void onStopDiscoveryFailed(String serviceType, int errorCode);
+
+ public void onDiscoveryStarted(String serviceType);
+
+ public void onDiscoveryStopped(String serviceType);
+
+ public void onServiceFound(NsdServiceInfo serviceInfo);
+
+ public void onServiceLost(NsdServiceInfo serviceInfo);
+ }
+
+ /** Interface for callback invocation for service registration */
+ public interface RegistrationListener {
+
+ public void onRegistrationFailed(NsdServiceInfo serviceInfo, int errorCode);
+
+ public void onUnregistrationFailed(NsdServiceInfo serviceInfo, int errorCode);
+
+ public void onServiceRegistered(NsdServiceInfo serviceInfo);
+
+ public void onServiceUnregistered(NsdServiceInfo serviceInfo);
+ }
+
+ /** Interface for callback invocation for service resolution */
+ public interface ResolveListener {
+
+ public void onResolveFailed(NsdServiceInfo serviceInfo, int errorCode);
+
+ public void onServiceResolved(NsdServiceInfo serviceInfo);
+ }
+
+ @VisibleForTesting
+ class ServiceHandler extends Handler {
+ ServiceHandler(Looper looper) {
+ super(looper);
+ }
+
+ @Override
+ public void handleMessage(Message message) {
+ final int what = message.what;
+ final int key = message.arg2;
+ final Object listener;
+ final NsdServiceInfo ns;
+ synchronized (mMapLock) {
+ listener = mListenerMap.get(key);
+ ns = mServiceMap.get(key);
+ }
+ if (listener == null) {
+ Log.d(TAG, "Stale key " + message.arg2);
+ return;
+ }
+ if (DBG) {
+ Log.d(TAG, "received " + nameOf(what) + " for key " + key + ", service " + ns);
+ }
+ switch (what) {
+ case DISCOVER_SERVICES_STARTED:
+ String s = getNsdServiceInfoType((NsdServiceInfo) message.obj);
+ ((DiscoveryListener) listener).onDiscoveryStarted(s);
+ break;
+ case DISCOVER_SERVICES_FAILED:
+ removeListener(key);
+ ((DiscoveryListener) listener).onStartDiscoveryFailed(getNsdServiceInfoType(ns),
+ message.arg1);
+ break;
+ case SERVICE_FOUND:
+ ((DiscoveryListener) listener).onServiceFound((NsdServiceInfo) message.obj);
+ break;
+ case SERVICE_LOST:
+ ((DiscoveryListener) listener).onServiceLost((NsdServiceInfo) message.obj);
+ break;
+ case STOP_DISCOVERY_FAILED:
+ // TODO: failure to stop discovery should be internal and retried internally, as
+ // the effect for the client is indistinguishable from STOP_DISCOVERY_SUCCEEDED
+ removeListener(key);
+ ((DiscoveryListener) listener).onStopDiscoveryFailed(getNsdServiceInfoType(ns),
+ message.arg1);
+ break;
+ case STOP_DISCOVERY_SUCCEEDED:
+ removeListener(key);
+ ((DiscoveryListener) listener).onDiscoveryStopped(getNsdServiceInfoType(ns));
+ break;
+ case REGISTER_SERVICE_FAILED:
+ removeListener(key);
+ ((RegistrationListener) listener).onRegistrationFailed(ns, message.arg1);
+ break;
+ case REGISTER_SERVICE_SUCCEEDED:
+ ((RegistrationListener) listener).onServiceRegistered(
+ (NsdServiceInfo) message.obj);
+ break;
+ case UNREGISTER_SERVICE_FAILED:
+ removeListener(key);
+ ((RegistrationListener) listener).onUnregistrationFailed(ns, message.arg1);
+ break;
+ case UNREGISTER_SERVICE_SUCCEEDED:
+ // TODO: do not unregister listener until service is unregistered, or provide
+ // alternative way for unregistering ?
+ removeListener(message.arg2);
+ ((RegistrationListener) listener).onServiceUnregistered(ns);
+ break;
+ case RESOLVE_SERVICE_FAILED:
+ removeListener(key);
+ ((ResolveListener) listener).onResolveFailed(ns, message.arg1);
+ break;
+ case RESOLVE_SERVICE_SUCCEEDED:
+ removeListener(key);
+ ((ResolveListener) listener).onServiceResolved((NsdServiceInfo) message.obj);
+ break;
+ default:
+ Log.d(TAG, "Ignored " + message);
+ break;
+ }
+ }
+ }
+
+ private int nextListenerKey() {
+ // Ensure mListenerKey >= FIRST_LISTENER_KEY;
+ mListenerKey = Math.max(FIRST_LISTENER_KEY, mListenerKey + 1);
+ return mListenerKey;
+ }
+
+ // Assert that the listener is not in the map, then add it and returns its key
+ private int putListener(Object listener, NsdServiceInfo s) {
+ checkListener(listener);
+ final int key;
+ synchronized (mMapLock) {
+ int valueIndex = mListenerMap.indexOfValue(listener);
+ checkArgument(valueIndex == -1, "listener already in use");
+ key = nextListenerKey();
+ mListenerMap.put(key, listener);
+ mServiceMap.put(key, s);
+ }
+ return key;
+ }
+
+ private void removeListener(int key) {
+ synchronized (mMapLock) {
+ mListenerMap.remove(key);
+ mServiceMap.remove(key);
+ }
+ }
+
+ private int getListenerKey(Object listener) {
+ checkListener(listener);
+ synchronized (mMapLock) {
+ int valueIndex = mListenerMap.indexOfValue(listener);
+ checkArgument(valueIndex != -1, "listener not registered");
+ return mListenerMap.keyAt(valueIndex);
+ }
+ }
+
+ private static String getNsdServiceInfoType(NsdServiceInfo s) {
+ if (s == null) return "?";
+ return s.getServiceType();
+ }
+
+ /**
+ * Register a service to be discovered by other services.
+ *
+ * <p> The function call immediately returns after sending a request to register service
+ * to the framework. The application is notified of a successful registration
+ * through the callback {@link RegistrationListener#onServiceRegistered} or a failure
+ * through {@link RegistrationListener#onRegistrationFailed}.
+ *
+ * <p> The application should call {@link #unregisterService} when the service
+ * registration is no longer required, and/or whenever the application is stopped.
+ *
+ * @param serviceInfo The service being registered
+ * @param protocolType The service discovery protocol
+ * @param listener The listener notifies of a successful registration and is used to
+ * unregister this service through a call on {@link #unregisterService}. Cannot be null.
+ * Cannot be in use for an active service registration.
+ */
+ public void registerService(NsdServiceInfo serviceInfo, int protocolType,
+ RegistrationListener listener) {
+ checkArgument(serviceInfo.getPort() > 0, "Invalid port number");
+ checkServiceInfo(serviceInfo);
+ checkProtocol(protocolType);
+ int key = putListener(listener, serviceInfo);
+ try {
+ mService.registerService(key, serviceInfo);
+ } catch (RemoteException e) {
+ e.rethrowFromSystemServer();
+ }
+ }
+
+ /**
+ * Unregister a service registered through {@link #registerService}. A successful
+ * unregister is notified to the application with a call to
+ * {@link RegistrationListener#onServiceUnregistered}.
+ *
+ * @param listener This should be the listener object that was passed to
+ * {@link #registerService}. It identifies the service that should be unregistered
+ * and notifies of a successful or unsuccessful unregistration via the listener
+ * callbacks. In API versions 20 and above, the listener object may be used for
+ * another service registration once the callback has been called. In API versions <= 19,
+ * there is no entirely reliable way to know when a listener may be re-used, and a new
+ * listener should be created for each service registration request.
+ */
+ public void unregisterService(RegistrationListener listener) {
+ int id = getListenerKey(listener);
+ try {
+ mService.unregisterService(id);
+ } catch (RemoteException e) {
+ e.rethrowFromSystemServer();
+ }
+ }
+
+ /**
+ * Initiate service discovery to browse for instances of a service type. Service discovery
+ * consumes network bandwidth and will continue until the application calls
+ * {@link #stopServiceDiscovery}.
+ *
+ * <p> The function call immediately returns after sending a request to start service
+ * discovery to the framework. The application is notified of a success to initiate
+ * discovery through the callback {@link DiscoveryListener#onDiscoveryStarted} or a failure
+ * through {@link DiscoveryListener#onStartDiscoveryFailed}.
+ *
+ * <p> Upon successful start, application is notified when a service is found with
+ * {@link DiscoveryListener#onServiceFound} or when a service is lost with
+ * {@link DiscoveryListener#onServiceLost}.
+ *
+ * <p> Upon failure to start, service discovery is not active and application does
+ * not need to invoke {@link #stopServiceDiscovery}
+ *
+ * <p> The application should call {@link #stopServiceDiscovery} when discovery of this
+ * service type is no longer required, and/or whenever the application is paused or
+ * stopped.
+ *
+ * @param serviceType The service type being discovered. Examples include "_http._tcp" for
+ * http services or "_ipp._tcp" for printers
+ * @param protocolType The service discovery protocol
+ * @param listener The listener notifies of a successful discovery and is used
+ * to stop discovery on this serviceType through a call on {@link #stopServiceDiscovery}.
+ * Cannot be null. Cannot be in use for an active service discovery.
+ */
+ public void discoverServices(String serviceType, int protocolType, DiscoveryListener listener) {
+ checkStringNotEmpty(serviceType, "Service type cannot be empty");
+ checkProtocol(protocolType);
+
+ NsdServiceInfo s = new NsdServiceInfo();
+ s.setServiceType(serviceType);
+
+ int key = putListener(listener, s);
+ try {
+ mService.discoverServices(key, s);
+ } catch (RemoteException e) {
+ e.rethrowFromSystemServer();
+ }
+ }
+
+ /**
+ * Stop service discovery initiated with {@link #discoverServices}. An active service
+ * discovery is notified to the application with {@link DiscoveryListener#onDiscoveryStarted}
+ * and it stays active until the application invokes a stop service discovery. A successful
+ * stop is notified to with a call to {@link DiscoveryListener#onDiscoveryStopped}.
+ *
+ * <p> Upon failure to stop service discovery, application is notified through
+ * {@link DiscoveryListener#onStopDiscoveryFailed}.
+ *
+ * @param listener This should be the listener object that was passed to {@link #discoverServices}.
+ * It identifies the discovery that should be stopped and notifies of a successful or
+ * unsuccessful stop. In API versions 20 and above, the listener object may be used for
+ * another service discovery once the callback has been called. In API versions <= 19,
+ * there is no entirely reliable way to know when a listener may be re-used, and a new
+ * listener should be created for each service discovery request.
+ */
+ public void stopServiceDiscovery(DiscoveryListener listener) {
+ int id = getListenerKey(listener);
+ try {
+ mService.stopDiscovery(id);
+ } catch (RemoteException e) {
+ e.rethrowFromSystemServer();
+ }
+ }
+
+ /**
+ * Resolve a discovered service. An application can resolve a service right before
+ * establishing a connection to fetch the IP and port details on which to setup
+ * the connection.
+ *
+ * @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.
+ */
+ public void resolveService(NsdServiceInfo serviceInfo, ResolveListener listener) {
+ checkServiceInfo(serviceInfo);
+ int key = putListener(listener, serviceInfo);
+ try {
+ mService.resolveService(key, serviceInfo);
+ } catch (RemoteException e) {
+ e.rethrowFromSystemServer();
+ }
+ }
+
+ private static void checkListener(Object listener) {
+ checkNotNull(listener, "listener cannot be null");
+ }
+
+ private static void checkProtocol(int protocolType) {
+ checkArgument(protocolType == PROTOCOL_DNS_SD, "Unsupported protocol");
+ }
+
+ private static void checkServiceInfo(NsdServiceInfo serviceInfo) {
+ checkNotNull(serviceInfo, "NsdServiceInfo cannot be null");
+ checkStringNotEmpty(serviceInfo.getServiceName(), "Service name cannot be empty");
+ checkStringNotEmpty(serviceInfo.getServiceType(), "Service type cannot be empty");
+ }
+}
diff --git a/packages/Nsd/framework/src/android/net/nsd/NsdServiceInfo.java b/packages/Nsd/framework/src/android/net/nsd/NsdServiceInfo.java
new file mode 100644
index 0000000..0946499
--- /dev/null
+++ b/packages/Nsd/framework/src/android/net/nsd/NsdServiceInfo.java
@@ -0,0 +1,391 @@
+/*
+ * Copyright (C) 2012 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.nsd;
+
+import android.annotation.NonNull;
+import android.compat.annotation.UnsupportedAppUsage;
+import android.os.Parcel;
+import android.os.Parcelable;
+import android.text.TextUtils;
+import android.util.ArrayMap;
+import android.util.Base64;
+import android.util.Log;
+
+import java.io.UnsupportedEncodingException;
+import java.net.InetAddress;
+import java.nio.charset.StandardCharsets;
+import java.util.Collections;
+import java.util.Map;
+
+/**
+ * A class representing service information for network service discovery
+ * {@see NsdManager}
+ */
+public final class NsdServiceInfo implements Parcelable {
+
+ private static final String TAG = "NsdServiceInfo";
+
+ private String mServiceName;
+
+ private String mServiceType;
+
+ private final ArrayMap<String, byte[]> mTxtRecord = new ArrayMap<>();
+
+ private InetAddress mHost;
+
+ private int mPort;
+
+ public NsdServiceInfo() {
+ }
+
+ /** @hide */
+ public NsdServiceInfo(String sn, String rt) {
+ mServiceName = sn;
+ mServiceType = rt;
+ }
+
+ /** Get the service name */
+ public String getServiceName() {
+ return mServiceName;
+ }
+
+ /** Set the service name */
+ public void setServiceName(String s) {
+ mServiceName = s;
+ }
+
+ /** Get the service type */
+ public String getServiceType() {
+ return mServiceType;
+ }
+
+ /** Set the service type */
+ public void setServiceType(String s) {
+ mServiceType = s;
+ }
+
+ /** Get the host address. The host address is valid for a resolved service. */
+ public InetAddress getHost() {
+ return mHost;
+ }
+
+ /** Set the host address */
+ public void setHost(InetAddress s) {
+ mHost = s;
+ }
+
+ /** Get port number. The port number is valid for a resolved service. */
+ public int getPort() {
+ return mPort;
+ }
+
+ /** Set port number */
+ public void setPort(int p) {
+ mPort = p;
+ }
+
+ /**
+ * Unpack txt information from a base-64 encoded byte array.
+ *
+ * @param rawRecords The raw base64 encoded records string read from netd.
+ *
+ * @hide
+ */
+ public void setTxtRecords(@NonNull String rawRecords) {
+ byte[] txtRecordsRawBytes = Base64.decode(rawRecords, Base64.DEFAULT);
+
+ // There can be multiple TXT records after each other. Each record has to following format:
+ //
+ // byte type required meaning
+ // ------------------- ------------------- -------- ----------------------------------
+ // 0 unsigned 8 bit yes size of record excluding this byte
+ // 1 - n ASCII but not '=' yes key
+ // n + 1 '=' optional separator of key and value
+ // n + 2 - record size uninterpreted bytes optional value
+ //
+ // Example legal records:
+ // [11, 'm', 'y', 'k', 'e', 'y', '=', 0x0, 0x4, 0x65, 0x7, 0xff]
+ // [17, 'm', 'y', 'K', 'e', 'y', 'W', 'i', 't', 'h', 'N', 'o', 'V', 'a', 'l', 'u', 'e', '=']
+ // [12, 'm', 'y', 'B', 'o', 'o', 'l', 'e', 'a', 'n', 'K', 'e', 'y']
+ //
+ // Example corrupted records
+ // [3, =, 1, 2] <- key is empty
+ // [3, 0, =, 2] <- key contains non-ASCII character. We handle this by replacing the
+ // invalid characters instead of skipping the record.
+ // [30, 'a', =, 2] <- length exceeds total left over bytes in the TXT records array, we
+ // handle this by reducing the length of the record as needed.
+ int pos = 0;
+ while (pos < txtRecordsRawBytes.length) {
+ // recordLen is an unsigned 8 bit value
+ int recordLen = txtRecordsRawBytes[pos] & 0xff;
+ pos += 1;
+
+ try {
+ if (recordLen == 0) {
+ throw new IllegalArgumentException("Zero sized txt record");
+ } else if (pos + recordLen > txtRecordsRawBytes.length) {
+ Log.w(TAG, "Corrupt record length (pos = " + pos + "): " + recordLen);
+ recordLen = txtRecordsRawBytes.length - pos;
+ }
+
+ // Decode key-value records
+ String key = null;
+ byte[] value = null;
+ int valueLen = 0;
+ for (int i = pos; i < pos + recordLen; i++) {
+ if (key == null) {
+ if (txtRecordsRawBytes[i] == '=') {
+ key = new String(txtRecordsRawBytes, pos, i - pos,
+ StandardCharsets.US_ASCII);
+ }
+ } else {
+ if (value == null) {
+ value = new byte[recordLen - key.length() - 1];
+ }
+ value[valueLen] = txtRecordsRawBytes[i];
+ valueLen++;
+ }
+ }
+
+ // If '=' was not found we have a boolean record
+ if (key == null) {
+ key = new String(txtRecordsRawBytes, pos, recordLen, StandardCharsets.US_ASCII);
+ }
+
+ if (TextUtils.isEmpty(key)) {
+ // Empty keys are not allowed (RFC6763 6.4)
+ throw new IllegalArgumentException("Invalid txt record (key is empty)");
+ }
+
+ if (getAttributes().containsKey(key)) {
+ // When we have a duplicate record, the later ones are ignored (RFC6763 6.4)
+ throw new IllegalArgumentException("Invalid txt record (duplicate key \"" + key + "\")");
+ }
+
+ setAttribute(key, value);
+ } catch (IllegalArgumentException e) {
+ Log.e(TAG, "While parsing txt records (pos = " + pos + "): " + e.getMessage());
+ }
+
+ pos += recordLen;
+ }
+ }
+
+ /** @hide */
+ @UnsupportedAppUsage
+ public void setAttribute(String key, byte[] value) {
+ if (TextUtils.isEmpty(key)) {
+ throw new IllegalArgumentException("Key cannot be empty");
+ }
+
+ // Key must be printable US-ASCII, excluding =.
+ for (int i = 0; i < key.length(); ++i) {
+ char character = key.charAt(i);
+ if (character < 0x20 || character > 0x7E) {
+ throw new IllegalArgumentException("Key strings must be printable US-ASCII");
+ } else if (character == 0x3D) {
+ throw new IllegalArgumentException("Key strings must not include '='");
+ }
+ }
+
+ // Key length + value length must be < 255.
+ if (key.length() + (value == null ? 0 : value.length) >= 255) {
+ throw new IllegalArgumentException("Key length + value length must be < 255 bytes");
+ }
+
+ // Warn if key is > 9 characters, as recommended by RFC 6763 section 6.4.
+ if (key.length() > 9) {
+ Log.w(TAG, "Key lengths > 9 are discouraged: " + key);
+ }
+
+ // Check against total TXT record size limits.
+ // Arbitrary 400 / 1300 byte limits taken from RFC 6763 section 6.2.
+ int txtRecordSize = getTxtRecordSize();
+ int futureSize = txtRecordSize + key.length() + (value == null ? 0 : value.length) + 2;
+ if (futureSize > 1300) {
+ throw new IllegalArgumentException("Total length of attributes must be < 1300 bytes");
+ } else if (futureSize > 400) {
+ Log.w(TAG, "Total length of all attributes exceeds 400 bytes; truncation may occur");
+ }
+
+ mTxtRecord.put(key, value);
+ }
+
+ /**
+ * Add a service attribute as a key/value pair.
+ *
+ * <p> Service attributes are included as DNS-SD TXT record pairs.
+ *
+ * <p> The key must be US-ASCII printable characters, excluding the '=' character. Values may
+ * be UTF-8 strings or null. The total length of key + value must be less than 255 bytes.
+ *
+ * <p> Keys should be short, ideally no more than 9 characters, and unique per instance of
+ * {@link NsdServiceInfo}. Calling {@link #setAttribute} twice with the same key will overwrite
+ * first value.
+ */
+ public void setAttribute(String key, String value) {
+ try {
+ setAttribute(key, value == null ? (byte []) null : value.getBytes("UTF-8"));
+ } catch (UnsupportedEncodingException e) {
+ throw new IllegalArgumentException("Value must be UTF-8");
+ }
+ }
+
+ /** Remove an attribute by key */
+ public void removeAttribute(String key) {
+ mTxtRecord.remove(key);
+ }
+
+ /**
+ * Retrieve attributes as a map of String keys to byte[] values. The attributes map is only
+ * valid for a resolved service.
+ *
+ * <p> The returned map is unmodifiable; changes must be made through {@link #setAttribute} and
+ * {@link #removeAttribute}.
+ */
+ public Map<String, byte[]> getAttributes() {
+ return Collections.unmodifiableMap(mTxtRecord);
+ }
+
+ private int getTxtRecordSize() {
+ int txtRecordSize = 0;
+ for (Map.Entry<String, byte[]> entry : mTxtRecord.entrySet()) {
+ txtRecordSize += 2; // One for the length byte, one for the = between key and value.
+ txtRecordSize += entry.getKey().length();
+ byte[] value = entry.getValue();
+ txtRecordSize += value == null ? 0 : value.length;
+ }
+ return txtRecordSize;
+ }
+
+ /** @hide */
+ public @NonNull byte[] getTxtRecord() {
+ int txtRecordSize = getTxtRecordSize();
+ if (txtRecordSize == 0) {
+ return new byte[]{};
+ }
+
+ byte[] txtRecord = new byte[txtRecordSize];
+ int ptr = 0;
+ for (Map.Entry<String, byte[]> entry : mTxtRecord.entrySet()) {
+ String key = entry.getKey();
+ byte[] value = entry.getValue();
+
+ // One byte to record the length of this key/value pair.
+ txtRecord[ptr++] = (byte) (key.length() + (value == null ? 0 : value.length) + 1);
+
+ // The key, in US-ASCII.
+ // Note: use the StandardCharsets const here because it doesn't raise exceptions and we
+ // already know the key is ASCII at this point.
+ System.arraycopy(key.getBytes(StandardCharsets.US_ASCII), 0, txtRecord, ptr,
+ key.length());
+ ptr += key.length();
+
+ // US-ASCII '=' character.
+ txtRecord[ptr++] = (byte)'=';
+
+ // The value, as any raw bytes.
+ if (value != null) {
+ System.arraycopy(value, 0, txtRecord, ptr, value.length);
+ ptr += value.length;
+ }
+ }
+ return txtRecord;
+ }
+
+ public String toString() {
+ StringBuffer sb = new StringBuffer();
+
+ sb.append("name: ").append(mServiceName)
+ .append(", type: ").append(mServiceType)
+ .append(", host: ").append(mHost)
+ .append(", port: ").append(mPort);
+
+ byte[] txtRecord = getTxtRecord();
+ if (txtRecord != null) {
+ sb.append(", txtRecord: ").append(new String(txtRecord, StandardCharsets.UTF_8));
+ }
+ return sb.toString();
+ }
+
+ /** Implement the Parcelable interface */
+ public int describeContents() {
+ return 0;
+ }
+
+ /** Implement the Parcelable interface */
+ 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.
+ dest.writeInt(mTxtRecord.size());
+ for (String key : mTxtRecord.keySet()) {
+ byte[] value = mTxtRecord.get(key);
+ if (value != null) {
+ dest.writeInt(1);
+ dest.writeInt(value.length);
+ dest.writeByteArray(value);
+ } else {
+ dest.writeInt(0);
+ }
+ dest.writeString(key);
+ }
+ }
+
+ /** Implement the Parcelable interface */
+ public static final @android.annotation.NonNull Creator<NsdServiceInfo> CREATOR =
+ new Creator<NsdServiceInfo>() {
+ public NsdServiceInfo createFromParcel(Parcel in) {
+ 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.
+ int recordCount = in.readInt();
+ for (int i = 0; i < recordCount; ++i) {
+ byte[] valueArray = null;
+ if (in.readInt() == 1) {
+ int valueLength = in.readInt();
+ valueArray = new byte[valueLength];
+ in.readByteArray(valueArray);
+ }
+ info.mTxtRecord.put(in.readString(), valueArray);
+ }
+ return info;
+ }
+
+ public NsdServiceInfo[] newArray(int size) {
+ return new NsdServiceInfo[size];
+ }
+ };
+}