Merge changes from topic "audiomanagertest_cts_dnd"

* changes:
  [Notification] Fix NotificationManagerServiceTest
  [Notification] Fix Notification channel Dnd bypass for multiusers
diff --git a/core/api/current.txt b/core/api/current.txt
index 82393f4..9057203 100644
--- a/core/api/current.txt
+++ b/core/api/current.txt
@@ -25723,7 +25723,7 @@
   public abstract static class VcnManager.VcnStatusCallback {
     ctor public VcnManager.VcnStatusCallback();
     method public abstract void onGatewayConnectionError(@NonNull int[], int, @Nullable Throwable);
-    method public abstract void onVcnStatusChanged(int);
+    method public abstract void onStatusChanged(int);
   }
 
 }
@@ -40663,7 +40663,6 @@
     method public static int[] calculateLength(String, boolean);
     method @Deprecated public static android.telephony.SmsMessage createFromPdu(byte[]);
     method public static android.telephony.SmsMessage createFromPdu(byte[], String);
-    method @Nullable public static android.telephony.SmsMessage createSmsSubmitPdu(@NonNull byte[], boolean);
     method public String getDisplayMessageBody();
     method public String getDisplayOriginatingAddress();
     method public String getEmailBody();
diff --git a/core/api/system-current.txt b/core/api/system-current.txt
index 92c18c6..86f1eae 100644
--- a/core/api/system-current.txt
+++ b/core/api/system-current.txt
@@ -11745,6 +11745,7 @@
     method @Nullable public android.telephony.ims.RcsContactPresenceTuple getCapabilityTuple(@NonNull String);
     method @NonNull public java.util.List<android.telephony.ims.RcsContactPresenceTuple> getCapabilityTuples();
     method @NonNull public android.net.Uri getContactUri();
+    method @NonNull public java.util.Set<java.lang.String> getFeatureTags();
     method public int getRequestResult();
     method public int getSourceType();
     method public void writeToParcel(@NonNull android.os.Parcel, int);
@@ -11759,6 +11760,14 @@
     field public static final int SOURCE_TYPE_NETWORK = 0; // 0x0
   }
 
+  public static final class RcsContactUceCapability.OptionsBuilder {
+    ctor public RcsContactUceCapability.OptionsBuilder(@NonNull android.net.Uri);
+    method @NonNull public android.telephony.ims.RcsContactUceCapability.OptionsBuilder addFeatureTag(@NonNull String);
+    method @NonNull public android.telephony.ims.RcsContactUceCapability.OptionsBuilder addFeatureTags(@NonNull java.util.Set<java.lang.String>);
+    method @NonNull public android.telephony.ims.RcsContactUceCapability build();
+    method @NonNull public android.telephony.ims.RcsContactUceCapability.OptionsBuilder setRequestResult(int);
+  }
+
   public static final class RcsContactUceCapability.PresenceBuilder {
     ctor public RcsContactUceCapability.PresenceBuilder(@NonNull android.net.Uri, int, int);
     method @NonNull public android.telephony.ims.RcsContactUceCapability.PresenceBuilder addCapabilityTuple(@NonNull android.telephony.ims.RcsContactPresenceTuple);
@@ -12052,7 +12061,7 @@
 package android.telephony.ims.stub {
 
   public interface CapabilityExchangeEventListener {
-    method public void onRemoteCapabilityRequest(@NonNull android.net.Uri, @NonNull java.util.List<java.lang.String>, @NonNull android.telephony.ims.stub.CapabilityExchangeEventListener.OptionsRequestCallback) throws android.telephony.ims.ImsException;
+    method public void onRemoteCapabilityRequest(@NonNull android.net.Uri, @NonNull java.util.Set<java.lang.String>, @NonNull android.telephony.ims.stub.CapabilityExchangeEventListener.OptionsRequestCallback) throws android.telephony.ims.ImsException;
     method public void onRequestPublishCapabilities(int) throws android.telephony.ims.ImsException;
     method public void onUnpublish() throws android.telephony.ims.ImsException;
   }
@@ -12248,7 +12257,7 @@
   public class RcsCapabilityExchangeImplBase {
     ctor public RcsCapabilityExchangeImplBase(@NonNull java.util.concurrent.Executor);
     method public void publishCapabilities(@NonNull String, @NonNull android.telephony.ims.stub.RcsCapabilityExchangeImplBase.PublishResponseCallback);
-    method public void sendOptionsCapabilityRequest(@NonNull android.net.Uri, @NonNull java.util.List<java.lang.String>, @NonNull android.telephony.ims.stub.RcsCapabilityExchangeImplBase.OptionsResponseCallback);
+    method public void sendOptionsCapabilityRequest(@NonNull android.net.Uri, @NonNull java.util.Set<java.lang.String>, @NonNull android.telephony.ims.stub.RcsCapabilityExchangeImplBase.OptionsResponseCallback);
     method public void subscribeForCapabilities(@NonNull java.util.Collection<android.net.Uri>, @NonNull android.telephony.ims.stub.RcsCapabilityExchangeImplBase.SubscribeResponseCallback);
     field public static final int COMMAND_CODE_FETCH_ERROR = 3; // 0x3
     field public static final int COMMAND_CODE_GENERIC_FAILURE = 1; // 0x1
diff --git a/core/java/android/bluetooth/le/ScanFilter.java b/core/java/android/bluetooth/le/ScanFilter.java
index 8672150..3c20dca 100644
--- a/core/java/android/bluetooth/le/ScanFilter.java
+++ b/core/java/android/bluetooth/le/ScanFilter.java
@@ -587,7 +587,7 @@
          * @throws IllegalArgumentException If the {@code deviceAddress} is invalid.
          */
         public Builder setDeviceAddress(String deviceAddress) {
-            return setDeviceAddress(mDeviceAddress, BluetoothDevice.ADDRESS_TYPE_PUBLIC);
+            return setDeviceAddress(deviceAddress, BluetoothDevice.ADDRESS_TYPE_PUBLIC);
         }
 
         /**
diff --git a/core/java/android/net/vcn/VcnManager.java b/core/java/android/net/vcn/VcnManager.java
index b73fdbf..c0189e2 100644
--- a/core/java/android/net/vcn/VcnManager.java
+++ b/core/java/android/net/vcn/VcnManager.java
@@ -439,7 +439,7 @@
          * @param statusCode the code for the status change encountered by this {@link
          *     VcnStatusCallback}'s subscription group.
          */
-        public abstract void onVcnStatusChanged(@VcnStatusCode int statusCode);
+        public abstract void onStatusChanged(@VcnStatusCode int statusCode);
 
         /**
          * Invoked when a VCN Gateway Connection corresponding to this callback's subscription group
@@ -476,7 +476,7 @@
      * and there is a VCN active for its specified subscription group (this may happen after the
      * callback is registered).
      *
-     * <p>{@link VcnStatusCallback#onVcnStatusChanged(int)} will be invoked on registration with the
+     * <p>{@link VcnStatusCallback#onStatusChanged(int)} will be invoked on registration with the
      * current status for the specified subscription group's VCN. If the registrant is not
      * privileged for this subscription group, {@link #VCN_STATUS_CODE_NOT_CONFIGURED} will be
      * returned.
@@ -580,7 +580,7 @@
         @Override
         public void onVcnStatusChanged(@VcnStatusCode int statusCode) {
             Binder.withCleanCallingIdentity(
-                    () -> mExecutor.execute(() -> mCallback.onVcnStatusChanged(statusCode)));
+                    () -> mExecutor.execute(() -> mCallback.onStatusChanged(statusCode)));
         }
 
         // TODO(b/180521637): use ServiceSpecificException for safer Exception 'parceling'
diff --git a/graphics/java/android/graphics/Typeface.java b/graphics/java/android/graphics/Typeface.java
index fe5c1be..d048efc 100644
--- a/graphics/java/android/graphics/Typeface.java
+++ b/graphics/java/android/graphics/Typeface.java
@@ -1196,13 +1196,11 @@
 
     /** @hide */
     public boolean isSupportedAxes(int axis) {
-        if (mSupportedAxes == null) {
-            synchronized (this) {
+        synchronized (this) {
+            if (mSupportedAxes == null) {
+                mSupportedAxes = nativeGetSupportedAxes(native_instance);
                 if (mSupportedAxes == null) {
-                    mSupportedAxes = nativeGetSupportedAxes(native_instance);
-                    if (mSupportedAxes == null) {
-                        mSupportedAxes = EMPTY_AXES;
-                    }
+                    mSupportedAxes = EMPTY_AXES;
                 }
             }
         }
diff --git a/keystore/java/android/security/keystore/KeyGenParameterSpec.java b/keystore/java/android/security/keystore/KeyGenParameterSpec.java
index 5cb2c3b..9ca551b 100644
--- a/keystore/java/android/security/keystore/KeyGenParameterSpec.java
+++ b/keystore/java/android/security/keystore/KeyGenParameterSpec.java
@@ -288,7 +288,7 @@
     private static final Date DEFAULT_CERT_NOT_AFTER = new Date(2461449600000L); // Jan 1 2048
 
     private final String mKeystoreAlias;
-    private final int mNamespace;
+    private final @KeyProperties.Namespace int mNamespace;
     private final int mKeySize;
     private final AlgorithmParameterSpec mSpec;
     private final X500Principal mCertificateSubject;
@@ -331,7 +331,7 @@
      */
     public KeyGenParameterSpec(
             String keyStoreAlias,
-            int namespace,
+            @KeyProperties.Namespace int namespace,
             int keySize,
             AlgorithmParameterSpec spec,
             X500Principal certificateSubject,
@@ -472,7 +472,7 @@
      * @hide
      */
     @SystemApi
-    public int getNamespace() {
+    public @KeyProperties.Namespace int getNamespace() {
         return mNamespace;
     }
 
@@ -896,7 +896,7 @@
         private final String mKeystoreAlias;
         private @KeyProperties.PurposeEnum int mPurposes;
 
-        private int mNamespace = KeyProperties.NAMESPACE_APPLICATION;
+        private @KeyProperties.Namespace int mNamespace = KeyProperties.NAMESPACE_APPLICATION;
         private int mKeySize = -1;
         private AlgorithmParameterSpec mSpec;
         private X500Principal mCertificateSubject;
@@ -1051,7 +1051,7 @@
          */
         @SystemApi
         @NonNull
-        public Builder setNamespace(int namespace) {
+        public Builder setNamespace(@KeyProperties.Namespace int namespace) {
             mNamespace = namespace;
             return this;
         }
diff --git a/keystore/java/android/security/keystore/KeyProperties.java b/keystore/java/android/security/keystore/KeyProperties.java
index 7b0fa91..682d12a 100644
--- a/keystore/java/android/security/keystore/KeyProperties.java
+++ b/keystore/java/android/security/keystore/KeyProperties.java
@@ -892,6 +892,22 @@
     }
 
     /**
+     * Namespaces provide system developers and vendors with a way to use keystore without
+     * requiring an applications uid. Namespaces can be configured using SEPolicy.
+     * See <a href="https://source.android.com/security/keystore#access-control">
+     *     Keystore 2.0 access-control</a>
+     * {@See KeyGenParameterSpec.Builder#setNamespace}
+     * {@See android.security.keystore2.AndroidKeyStoreLoadStoreParameter}
+     * @hide
+     */
+    @Retention(RetentionPolicy.SOURCE)
+    @IntDef(prefix = { "NAMESPACE_" }, value = {
+            NAMESPACE_APPLICATION,
+            NAMESPACE_WIFI,
+    })
+    public @interface Namespace {}
+
+    /**
      * This value indicates the implicit keystore namespace of the calling application.
      * It is used by default. Only select system components can choose a different namespace
      * which it must be configured in SEPolicy.
@@ -912,14 +928,12 @@
      * For legacy support, translate namespaces into known UIDs.
      * @hide
      */
-    public static int namespaceToLegacyUid(int namespace) {
+    public static int namespaceToLegacyUid(@Namespace int namespace) {
         switch (namespace) {
             case NAMESPACE_APPLICATION:
                 return KeyStore.UID_SELF;
             case NAMESPACE_WIFI:
                 return Process.WIFI_UID;
-            // TODO Translate WIFI and VPN UIDs once the namespaces are defined.
-            //  b/171305388 and b/171305607
             default:
                 throw new IllegalArgumentException("No UID corresponding to namespace "
                         + namespace);
@@ -930,14 +944,12 @@
      * For legacy support, translate namespaces into known UIDs.
      * @hide
      */
-    public static int legacyUidToNamespace(int uid) {
+    public static @Namespace int legacyUidToNamespace(int uid) {
         switch (uid) {
             case KeyStore.UID_SELF:
                 return NAMESPACE_APPLICATION;
             case Process.WIFI_UID:
                 return NAMESPACE_WIFI;
-            // TODO Translate WIFI and VPN UIDs once the namespaces are defined.
-            //  b/171305388 and b/171305607
             default:
                 throw new IllegalArgumentException("No namespace corresponding to uid "
                         + uid);
diff --git a/keystore/java/android/security/keystore2/AndroidKeyStoreLoadStoreParameter.java b/keystore/java/android/security/keystore2/AndroidKeyStoreLoadStoreParameter.java
index 0c6744f..25b1c86 100644
--- a/keystore/java/android/security/keystore2/AndroidKeyStoreLoadStoreParameter.java
+++ b/keystore/java/android/security/keystore2/AndroidKeyStoreLoadStoreParameter.java
@@ -16,6 +16,8 @@
 
 package android.security.keystore2;
 
+import android.security.keystore.KeyProperties;
+
 import java.security.KeyStore;
 import java.security.KeyStore.ProtectionParameter;
 
@@ -24,9 +26,9 @@
  */
 public class AndroidKeyStoreLoadStoreParameter implements KeyStore.LoadStoreParameter {
 
-    private final int mNamespace;
+    private final @KeyProperties.Namespace int mNamespace;
 
-    public AndroidKeyStoreLoadStoreParameter(int namespace) {
+    public AndroidKeyStoreLoadStoreParameter(@KeyProperties.Namespace int namespace) {
         mNamespace = namespace;
     }
 
@@ -35,7 +37,7 @@
         return null;
     }
 
-    int getNamespace() {
+    @KeyProperties.Namespace int getNamespace() {
         return mNamespace;
     }
 }
diff --git a/keystore/java/android/security/keystore2/AndroidKeyStoreSpi.java b/keystore/java/android/security/keystore2/AndroidKeyStoreSpi.java
index 39607ae..32f98a2 100644
--- a/keystore/java/android/security/keystore2/AndroidKeyStoreSpi.java
+++ b/keystore/java/android/security/keystore2/AndroidKeyStoreSpi.java
@@ -100,7 +100,7 @@
     public static final String NAME = "AndroidKeyStore";
 
     private KeyStore2 mKeyStore;
-    private int mNamespace = KeyProperties.NAMESPACE_APPLICATION;
+    private @KeyProperties.Namespace int mNamespace = KeyProperties.NAMESPACE_APPLICATION;
 
     @Override
     public Key engineGetKey(String alias, char[] password) throws NoSuchAlgorithmException,
@@ -1125,7 +1125,7 @@
     @Override
     public void engineLoad(LoadStoreParameter param) throws IOException,
             NoSuchAlgorithmException, CertificateException {
-        int namespace = KeyProperties.NAMESPACE_APPLICATION;
+        @KeyProperties.Namespace int namespace = KeyProperties.NAMESPACE_APPLICATION;
         if (param != null) {
             if (param instanceof AndroidKeyStoreLoadStoreParameter) {
                 namespace = ((AndroidKeyStoreLoadStoreParameter) param).getNamespace();
diff --git a/services/core/java/com/android/server/vcn/Vcn.java b/services/core/java/com/android/server/vcn/Vcn.java
index 3f74938..89ed956 100644
--- a/services/core/java/com/android/server/vcn/Vcn.java
+++ b/services/core/java/com/android/server/vcn/Vcn.java
@@ -41,6 +41,7 @@
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.Map;
+import java.util.Map.Entry;
 import java.util.Objects;
 import java.util.Set;
 import java.util.concurrent.atomic.AtomicBoolean;
@@ -110,6 +111,24 @@
     @NonNull private final VcnNetworkRequestListener mRequestListener;
     @NonNull private final VcnCallback mVcnCallback;
 
+    /**
+     * Map containing all VcnGatewayConnections and their VcnGatewayConnectionConfigs.
+     *
+     * <p>Due to potential for race conditions, VcnGatewayConnections MUST only be created and added
+     * to this map in {@link #handleNetworkRequested(NetworkRequest, int, int)}, when a VCN receives
+     * a NetworkRequest that matches a VcnGatewayConnectionConfig for this VCN's VcnConfig.
+     *
+     * <p>A VcnGatewayConnection instance MUST NEVER overwrite an existing instance - otherwise
+     * there is potential for a orphaned VcnGatewayConnection instance that does not get properly
+     * shut down.
+     *
+     * <p>Due to potential for race conditions, VcnGatewayConnections MUST only be removed from this
+     * map once they have finished tearing down, which is reported to this VCN via {@link
+     * VcnGatewayStatusCallback#onQuit()}. Once this is done, all NetworkRequests are retrieved from
+     * the NetworkProvider so that another VcnGatewayConnectionConfig can match the
+     * previously-matched request.
+     */
+    // TODO(b/182533200): remove the invariant on VcnGatewayConnection lifecycles
     @NonNull
     private final Map<VcnGatewayConnectionConfig, VcnGatewayConnection> mVcnGatewayConnections =
             new HashMap<>();
@@ -191,6 +210,19 @@
         return Collections.unmodifiableSet(new HashSet<>(mVcnGatewayConnections.values()));
     }
 
+    /** Get current Configs and Gateways for testing purposes */
+    @VisibleForTesting(visibility = Visibility.PRIVATE)
+    public Map<VcnGatewayConnectionConfig, VcnGatewayConnection>
+            getVcnGatewayConnectionConfigMap() {
+        return Collections.unmodifiableMap(new HashMap<>(mVcnGatewayConnections));
+    }
+
+    /** Set whether this Vcn is active for testing purposes */
+    @VisibleForTesting(visibility = Visibility.PRIVATE)
+    public void setIsActive(boolean isActive) {
+        mIsActive.set(isActive);
+    }
+
     private class VcnNetworkRequestListener implements VcnNetworkProvider.NetworkRequestListener {
         @Override
         public void onNetworkRequested(@NonNull NetworkRequest request, int score, int providerId) {
@@ -202,11 +234,6 @@
 
     @Override
     public void handleMessage(@NonNull Message msg) {
-        // Ignore if this Vcn is not active and we're not receiving new configs
-        if (!isActive() && msg.what != MSG_EVENT_CONFIG_UPDATED) {
-            return;
-        }
-
         switch (msg.what) {
             case MSG_EVENT_CONFIG_UPDATED:
                 handleConfigUpdated((VcnConfig) msg.obj);
@@ -237,9 +264,31 @@
 
         mConfig = config;
 
-        // TODO(b/181815405): Reevaluate active VcnGatewayConnection(s)
+        if (mIsActive.getAndSet(true)) {
+            // VCN is already active - teardown any GatewayConnections whose configs have been
+            // removed and get all current requests
+            for (final Entry<VcnGatewayConnectionConfig, VcnGatewayConnection> entry :
+                    mVcnGatewayConnections.entrySet()) {
+                final VcnGatewayConnectionConfig gatewayConnectionConfig = entry.getKey();
+                final VcnGatewayConnection gatewayConnection = entry.getValue();
 
-        if (!mIsActive.getAndSet(true)) {
+                // GatewayConnectionConfigs must match exactly (otherwise authentication or
+                // connection details may have changed).
+                if (!mConfig.getGatewayConnectionConfigs().contains(gatewayConnectionConfig)) {
+                    if (gatewayConnection == null) {
+                        Slog.wtf(
+                                getLogTag(),
+                                "Found gatewayConnectionConfig without GatewayConnection");
+                    } else {
+                        gatewayConnection.teardownAsynchronously();
+                    }
+                }
+            }
+
+            // Trigger a re-evaluation of all NetworkRequests (to make sure any that can be
+            // satisfied start a new GatewayConnection)
+            mVcnContext.getVcnNetworkProvider().resendAllRequests(mRequestListener);
+        } else {
             // If this VCN was not previously active, it is exiting Safe Mode. Re-register the
             // request listener to get NetworkRequests again (and all cached requests).
             mVcnContext.getVcnNetworkProvider().registerListener(mRequestListener);
@@ -259,13 +308,16 @@
     private void handleEnterSafeMode() {
         handleTeardown();
 
-        mVcnGatewayConnections.clear();
-
         mVcnCallback.onEnteredSafeMode();
     }
 
     private void handleNetworkRequested(
             @NonNull NetworkRequest request, int score, int providerId) {
+        if (!isActive()) {
+            Slog.v(getLogTag(), "Received NetworkRequest while inactive. Ignore for now");
+            return;
+        }
+
         if (score > getNetworkScore()) {
             if (VDBG) {
                 Slog.v(
@@ -318,8 +370,10 @@
         mVcnGatewayConnections.remove(config);
 
         // Trigger a re-evaluation of all NetworkRequests (to make sure any that can be satisfied
-        // start a new GatewayConnection)
-        mVcnContext.getVcnNetworkProvider().resendAllRequests(mRequestListener);
+        // start a new GatewayConnection), but only if the Vcn is still active
+        if (isActive()) {
+            mVcnContext.getVcnNetworkProvider().resendAllRequests(mRequestListener);
+        }
     }
 
     private void handleSubscriptionsChanged(@NonNull TelephonySubscriptionSnapshot snapshot) {
diff --git a/telephony/java/android/telephony/SmsMessage.java b/telephony/java/android/telephony/SmsMessage.java
index cfb29f1..5a12865 100644
--- a/telephony/java/android/telephony/SmsMessage.java
+++ b/telephony/java/android/telephony/SmsMessage.java
@@ -300,9 +300,12 @@
      * @param data Message data.
      * @param isCdma Indicates weather the type of the SMS is CDMA.
      * @return An SmsMessage representing the message.
+     *
+     * @hide
      */
+    @SystemApi
     @Nullable
-    public static SmsMessage createSmsSubmitPdu(@NonNull byte[] data, boolean isCdma) {
+    public static SmsMessage createFromNativeSmsSubmitPdu(@NonNull byte[] data, boolean isCdma) {
         SmsMessageBase wrappedMessage;
 
         if (isCdma) {
@@ -318,23 +321,6 @@
     }
 
     /**
-     * Create an SmsMessage from a native SMS-Submit PDU, specified by Bluetooth Message Access
-     * Profile Specification v1.4.2 5.8.
-     * This is used by Bluetooth MAP profile to decode message when sending non UTF-8 SMS messages.
-     *
-     * @param data Message data.
-     * @param isCdma Indicates weather the type of the SMS is CDMA.
-     * @return An SmsMessage representing the message.
-     *
-     * @hide
-     */
-    @SystemApi
-    @Nullable
-    public static SmsMessage createFromNativeSmsSubmitPdu(@NonNull byte[] data, boolean isCdma) {
-        return null;
-    }
-
-    /**
      * Get the TP-Layer-Length for the given SMS-SUBMIT PDU Basically, the
      * length in bytes (not hex chars) less the SMSC header
      *
diff --git a/telephony/java/android/telephony/ims/RcsContactUceCapability.java b/telephony/java/android/telephony/ims/RcsContactUceCapability.java
index 52d0f03..a133ead 100644
--- a/telephony/java/android/telephony/ims/RcsContactUceCapability.java
+++ b/telephony/java/android/telephony/ims/RcsContactUceCapability.java
@@ -29,7 +29,9 @@
 import java.lang.annotation.RetentionPolicy;
 import java.util.ArrayList;
 import java.util.Collections;
+import java.util.HashSet;
 import java.util.List;
+import java.util.Set;
 
 /**
  * Contains the User Capability Exchange capabilities corresponding to a contact's URI.
@@ -110,7 +112,6 @@
     /**
      * Builder to help construct {@link RcsContactUceCapability} instances when capabilities were
      * queried through SIP OPTIONS.
-     * @hide
      */
     public static final class OptionsBuilder {
 
@@ -151,7 +152,7 @@
          * @param tags the list of the supported feature tags
          * @return this OptionBuilder
          */
-        public @NonNull OptionsBuilder addFeatureTags(@NonNull List<String> tags) {
+        public @NonNull OptionsBuilder addFeatureTags(@NonNull Set<String> tags) {
             mCapabilities.mFeatureTags.addAll(tags);
             return this;
         }
@@ -220,7 +221,7 @@
     private @CapabilityMechanism int mCapabilityMechanism;
     private @RequestResult int mRequestResult;
 
-    private final List<String> mFeatureTags = new ArrayList<>();
+    private final Set<String> mFeatureTags = new HashSet<>();
     private final List<RcsContactPresenceTuple> mPresenceTuples = new ArrayList<>();
 
     private RcsContactUceCapability(@NonNull Uri contactUri, @CapabilityMechanism int mechanism,
@@ -235,7 +236,9 @@
         mCapabilityMechanism = in.readInt();
         mSourceType = in.readInt();
         mRequestResult = in.readInt();
-        in.readStringList(mFeatureTags);
+        List<String> featureTagList = new ArrayList<>();
+        in.readStringList(featureTagList);
+        mFeatureTags.addAll(featureTagList);
         in.readParcelableList(mPresenceTuples, RcsContactPresenceTuple.class.getClassLoader());
     }
 
@@ -245,7 +248,7 @@
         out.writeInt(mCapabilityMechanism);
         out.writeInt(mSourceType);
         out.writeInt(mRequestResult);
-        out.writeStringList(mFeatureTags);
+        out.writeStringList(new ArrayList<>(mFeatureTags));
         out.writeParcelableList(mPresenceTuples, flags);
     }
 
@@ -285,7 +288,20 @@
         if (mCapabilityMechanism != CAPABILITY_MECHANISM_OPTIONS) {
             return Collections.emptyList();
         }
-        return Collections.unmodifiableList(mFeatureTags);
+        return Collections.unmodifiableList(new ArrayList<>(mFeatureTags));
+    }
+
+    /**
+     * @return The feature tags present in the OPTIONS response from the network.
+     * <p>
+     * Note: this is only populated if {@link #getCapabilityMechanism} is
+     * {@link RcsContactUceCapability#CAPABILITY_MECHANISM_OPTIONS}
+     */
+    public @NonNull Set<String> getFeatureTags() {
+        if (mCapabilityMechanism != CAPABILITY_MECHANISM_OPTIONS) {
+            return Collections.emptySet();
+        }
+        return Collections.unmodifiableSet(mFeatureTags);
     }
 
     /**
diff --git a/telephony/java/android/telephony/ims/aidl/CapabilityExchangeAidlWrapper.java b/telephony/java/android/telephony/ims/aidl/CapabilityExchangeAidlWrapper.java
index a217d13..c3d7325 100644
--- a/telephony/java/android/telephony/ims/aidl/CapabilityExchangeAidlWrapper.java
+++ b/telephony/java/android/telephony/ims/aidl/CapabilityExchangeAidlWrapper.java
@@ -26,7 +26,8 @@
 import android.telephony.ims.stub.CapabilityExchangeEventListener;
 import android.util.Log;
 
-import java.util.List;
+import java.util.ArrayList;
+import java.util.Set;
 
 /**
  * The ICapabilityExchangeEventListener wrapper class to store the listener which is registered by
@@ -84,7 +85,7 @@
      * request to the framework.
      */
     public void onRemoteCapabilityRequest(@NonNull Uri contactUri,
-            @NonNull List<String> remoteCapabilities, @NonNull OptionsRequestCallback callback)
+            @NonNull Set<String> remoteCapabilities, @NonNull OptionsRequestCallback callback)
             throws ImsException {
         ICapabilityExchangeEventListener listener = mListenerBinder;
         if (listener == null) {
@@ -114,7 +115,8 @@
         };
 
         try {
-            listener.onRemoteCapabilityRequest(contactUri, remoteCapabilities, internalCallback);
+            listener.onRemoteCapabilityRequest(contactUri, new ArrayList<>(remoteCapabilities),
+                    internalCallback);
         } catch (RemoteException e) {
             Log.w(LOG_TAG, "Remote capability request exception: " + e);
             throw new ImsException("Remote is not available",
diff --git a/telephony/java/android/telephony/ims/feature/RcsFeature.java b/telephony/java/android/telephony/ims/feature/RcsFeature.java
index 85703f8..6315b24 100644
--- a/telephony/java/android/telephony/ims/feature/RcsFeature.java
+++ b/telephony/java/android/telephony/ims/feature/RcsFeature.java
@@ -47,6 +47,7 @@
 
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
+import java.util.HashSet;
 import java.util.List;
 import java.util.concurrent.CancellationException;
 import java.util.concurrent.CompletableFuture;
@@ -145,8 +146,8 @@
                 throws RemoteException {
             OptionsResponseCallback callbackWrapper = new RcsOptionsResponseAidlWrapper(callback);
             executeMethodAsync(() -> mReference.getCapabilityExchangeImplBaseInternal()
-                    .sendOptionsCapabilityRequest(contactUri, myCapabilities, callbackWrapper),
-                    "sendOptionsCapabilityRequest");
+                    .sendOptionsCapabilityRequest(contactUri, new HashSet<>(myCapabilities),
+                        callbackWrapper), "sendOptionsCapabilityRequest");
         }
 
         // Call the methods with a clean calling identity on the executor and wait indefinitely for
diff --git a/telephony/java/android/telephony/ims/stub/CapabilityExchangeEventListener.java b/telephony/java/android/telephony/ims/stub/CapabilityExchangeEventListener.java
index 6295548..a3be8da 100644
--- a/telephony/java/android/telephony/ims/stub/CapabilityExchangeEventListener.java
+++ b/telephony/java/android/telephony/ims/stub/CapabilityExchangeEventListener.java
@@ -26,7 +26,7 @@
 import android.telephony.ims.feature.ImsFeature;
 import android.telephony.ims.feature.RcsFeature;
 
-import java.util.List;
+import java.util.Set;
 
 /**
  * The interface that is used by the framework to listen to events from the vendor RCS stack
@@ -98,7 +98,8 @@
      * {@link OptionsRequestCallback#onRespondToCapabilityRequestWithError}.
      * @param contactUri The URI associated with the remote contact that is
      * requesting capabilities.
-     * @param remoteCapabilities The remote contact's capability information.
+     * @param remoteCapabilities The remote contact's capability information. The capability
+     * information is in the format defined in RCC.07 section 2.6.1.3.
      * @param callback The callback of this request which is sent from the remote user.
      * @throws ImsException If this {@link RcsCapabilityExchangeImplBase} instance is not
      * currently connected to the framework. This can happen if the {@link RcsFeature} is not
@@ -107,6 +108,6 @@
      * cases when the Telephony stack has crashed.
      */
     void onRemoteCapabilityRequest(@NonNull Uri contactUri,
-            @NonNull List<String> remoteCapabilities,
+            @NonNull Set<String> remoteCapabilities,
             @NonNull OptionsRequestCallback callback) throws ImsException;
 }
diff --git a/telephony/java/android/telephony/ims/stub/RcsCapabilityExchangeImplBase.java b/telephony/java/android/telephony/ims/stub/RcsCapabilityExchangeImplBase.java
index 03e17fb..25b9446 100644
--- a/telephony/java/android/telephony/ims/stub/RcsCapabilityExchangeImplBase.java
+++ b/telephony/java/android/telephony/ims/stub/RcsCapabilityExchangeImplBase.java
@@ -33,6 +33,7 @@
 import java.lang.annotation.RetentionPolicy;
 import java.util.Collection;
 import java.util.List;
+import java.util.Set;
 import java.util.concurrent.Executor;
 
 /**
@@ -433,6 +434,7 @@
      * @param contactUri The URI of the remote user that we wish to get the capabilities of.
      * @param myCapabilities The capabilities of this device to send to the remote user.
      * @param callback The callback of this request which is sent from the remote user.
+     * @hide
      */
     // executor used is defined in the constructor.
     @SuppressLint("ExecutorRegistration")
@@ -446,4 +448,27 @@
             // Do not do anything, this is a stub implementation.
         }
     }
+
+    /**
+     * Push one's own capabilities to a remote user via the SIP OPTIONS presence exchange mechanism
+     * in order to receive the capabilities of the remote user in response.
+     * <p>
+     * The implementer must use {@link OptionsResponseCallback} to send the response of
+     * this query from the network back to the framework.
+     * @param contactUri The URI of the remote user that we wish to get the capabilities of.
+     * @param myCapabilities The capabilities of this device to send to the remote user.
+     * @param callback The callback of this request which is sent from the remote user.
+     */
+    // executor used is defined in the constructor.
+    @SuppressLint("ExecutorRegistration")
+    public void sendOptionsCapabilityRequest(@NonNull Uri contactUri,
+            @NonNull Set<String> myCapabilities, @NonNull OptionsResponseCallback callback) {
+        // Stub - to be implemented by service
+        Log.w(LOG_TAG, "sendOptionsCapabilityRequest called with no implementation.");
+        try {
+            callback.onCommandError(COMMAND_CODE_NOT_SUPPORTED);
+        } catch (ImsException e) {
+            // Do not do anything, this is a stub implementation.
+        }
+    }
 }
diff --git a/tests/vcn/java/android/net/vcn/VcnManagerTest.java b/tests/vcn/java/android/net/vcn/VcnManagerTest.java
index 7515971..516c206 100644
--- a/tests/vcn/java/android/net/vcn/VcnManagerTest.java
+++ b/tests/vcn/java/android/net/vcn/VcnManagerTest.java
@@ -204,7 +204,7 @@
                 new VcnStatusCallbackBinder(INLINE_EXECUTOR, mMockStatusCallback);
 
         cbBinder.onVcnStatusChanged(VCN_STATUS_CODE_ACTIVE);
-        verify(mMockStatusCallback).onVcnStatusChanged(VCN_STATUS_CODE_ACTIVE);
+        verify(mMockStatusCallback).onStatusChanged(VCN_STATUS_CODE_ACTIVE);
 
         cbBinder.onGatewayConnectionError(
                 UNDERLYING_NETWORK_CAPABILITIES,
diff --git a/tests/vcn/java/com/android/server/vcn/VcnTest.java b/tests/vcn/java/com/android/server/vcn/VcnTest.java
index 4fa63d4..c853fc5 100644
--- a/tests/vcn/java/com/android/server/vcn/VcnTest.java
+++ b/tests/vcn/java/com/android/server/vcn/VcnTest.java
@@ -29,6 +29,7 @@
 import static org.mockito.Mockito.doAnswer;
 import static org.mockito.Mockito.doReturn;
 import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.never;
 import static org.mockito.Mockito.times;
 import static org.mockito.Mockito.verify;
 
@@ -139,8 +140,7 @@
         mTestLooper.dispatchAll();
     }
 
-    @Test
-    public void testSubscriptionSnapshotUpdatesVcnGatewayConnections() {
+    private void verifyUpdateSubscriptionSnapshotNotifiesConnectionGateways(boolean isActive) {
         final NetworkRequestListener requestListener = verifyAndGetRequestListener();
         startVcnGatewayWithCapabilities(requestListener, TEST_CAPS[0]);
 
@@ -150,14 +150,27 @@
         final TelephonySubscriptionSnapshot updatedSnapshot =
                 mock(TelephonySubscriptionSnapshot.class);
 
+        mVcn.setIsActive(isActive);
+
         mVcn.updateSubscriptionSnapshot(updatedSnapshot);
         mTestLooper.dispatchAll();
 
         for (final VcnGatewayConnection gateway : gatewayConnections) {
-            verify(gateway).updateSubscriptionSnapshot(eq(updatedSnapshot));
+            verify(gateway, isActive ? times(1) : never())
+                    .updateSubscriptionSnapshot(eq(updatedSnapshot));
         }
     }
 
+    @Test
+    public void testSubscriptionSnapshotUpdatesVcnGatewayConnections() {
+        verifyUpdateSubscriptionSnapshotNotifiesConnectionGateways(true /* isActive */);
+    }
+
+    @Test
+    public void testSubscriptionSnapshotUpdatesVcnGatewayConnectionsWhileInactive() {
+        verifyUpdateSubscriptionSnapshotNotifiesConnectionGateways(false /* isActive */);
+    }
+
     private void triggerVcnRequestListeners(NetworkRequestListener requestListener) {
         for (final int[] caps : TEST_CAPS) {
             startVcnGatewayWithCapabilities(requestListener, caps);
@@ -187,7 +200,6 @@
             NetworkRequestListener requestListener,
             Set<VcnGatewayConnection> expectedGatewaysTornDown) {
         assertFalse(mVcn.isActive());
-        assertTrue(mVcn.getVcnGatewayConnections().isEmpty());
         for (final VcnGatewayConnection gatewayConnection : expectedGatewaysTornDown) {
             verify(gatewayConnection).teardownAsynchronously();
         }
@@ -238,6 +250,51 @@
     }
 
     @Test
+    public void testGatewayQuitWhileInactive() {
+        final NetworkRequestListener requestListener = verifyAndGetRequestListener();
+        final Set<VcnGatewayConnection> gatewayConnections =
+                new ArraySet<>(startGatewaysAndGetGatewayConnections(requestListener));
+
+        mVcn.teardownAsynchronously();
+        mTestLooper.dispatchAll();
+
+        final VcnGatewayStatusCallback statusCallback = mGatewayStatusCallbackCaptor.getValue();
+        statusCallback.onQuit();
+        mTestLooper.dispatchAll();
+
+        // Verify that the VCN requests the networkRequests be resent
+        assertEquals(1, mVcn.getVcnGatewayConnections().size());
+        verify(mVcnNetworkProvider, never()).resendAllRequests(requestListener);
+    }
+
+    @Test
+    public void testUpdateConfigReevaluatesGatewayConnections() {
+        final NetworkRequestListener requestListener = verifyAndGetRequestListener();
+        startGatewaysAndGetGatewayConnections(requestListener);
+        assertEquals(2, mVcn.getVcnGatewayConnectionConfigMap().size());
+
+        // Create VcnConfig with only one VcnGatewayConnectionConfig so a gateway connection is torn
+        // down
+        final VcnGatewayConnectionConfig activeConfig =
+                VcnGatewayConnectionConfigTest.buildTestConfigWithExposedCaps(TEST_CAPS[0]);
+        final VcnGatewayConnectionConfig removedConfig =
+                VcnGatewayConnectionConfigTest.buildTestConfigWithExposedCaps(TEST_CAPS[1]);
+        final VcnConfig updatedConfig =
+                new VcnConfig.Builder(mContext).addGatewayConnectionConfig(activeConfig).build();
+
+        mVcn.updateConfig(updatedConfig);
+        mTestLooper.dispatchAll();
+
+        final VcnGatewayConnection activeGatewayConnection =
+                mVcn.getVcnGatewayConnectionConfigMap().get(activeConfig);
+        final VcnGatewayConnection removedGatewayConnection =
+                mVcn.getVcnGatewayConnectionConfigMap().get(removedConfig);
+        verify(activeGatewayConnection, never()).teardownAsynchronously();
+        verify(removedGatewayConnection).teardownAsynchronously();
+        verify(mVcnNetworkProvider).resendAllRequests(requestListener);
+    }
+
+    @Test
     public void testUpdateConfigExitsSafeMode() {
         final NetworkRequestListener requestListener = verifyAndGetRequestListener();
         final Set<VcnGatewayConnection> gatewayConnections =
@@ -261,8 +318,8 @@
         verify(mVcnNetworkProvider, times(2)).registerListener(eq(requestListener));
         assertTrue(mVcn.isActive());
         for (final int[] caps : TEST_CAPS) {
-            // Expect each gateway connection created on initial startup, and again with new configs
-            verify(mDeps, times(2))
+            // Expect each gateway connection created only on initial startup
+            verify(mDeps)
                     .newVcnGatewayConnection(
                             eq(mVcnContext),
                             eq(TEST_SUB_GROUP),
@@ -271,4 +328,14 @@
                             any());
         }
     }
+
+    @Test
+    public void testIgnoreNetworkRequestWhileInactive() {
+        mVcn.setIsActive(false /* isActive */);
+
+        final NetworkRequestListener requestListener = verifyAndGetRequestListener();
+        triggerVcnRequestListeners(requestListener);
+
+        verify(mDeps, never()).newVcnGatewayConnection(any(), any(), any(), any(), any());
+    }
 }