Merge "Add network disconnected callback" into sc-dev

packages/Connectivity/framework/api/system-current.txt

@@ -219,6 +219,7 @@ package android.net {
     method public void onAutomaticReconnectDisabled();
     method public void onBandwidthUpdateRequested();
     method public void onNetworkCreated();
+    method public void onNetworkDisconnected();
     method public void onNetworkUnwanted();
     method public void onQosCallbackRegistered(int, @NonNull android.net.QosFilter);
     method public void onQosCallbackUnregistered(int);

packages/Connectivity/framework/src/android/net/INetworkAgent.aidl

@@ -47,4 +47,5 @@ oneway interface INetworkAgent {
     void onQosFilterCallbackRegistered(int qosCallbackId, in QosFilterParcelable filterParcel);
     void onQosCallbackUnregistered(int qosCallbackId);
     void onNetworkCreated();
+    void onNetworkDisconnected();
 }

packages/Connectivity/framework/src/android/net/NetworkAgent.java

@@ -370,6 +370,14 @@ public abstract class NetworkAgent {
      */
     public static final int CMD_NETWORK_CREATED = BASE + 22;
 
+    /**
+     * Sent by ConnectivityService to {@link NetworkAgent} to inform the agent that its native
+     * network was destroyed.
+     *
+     * @hide
+     */
+    public static final int CMD_NETWORK_DISCONNECTED = BASE + 23;
+
     private static NetworkInfo getLegacyNetworkInfo(final NetworkAgentConfig config) {
         final NetworkInfo ni = new NetworkInfo(config.legacyType, config.legacySubType,
                 config.legacyTypeName, config.legacySubTypeName);
@@ -573,6 +581,10 @@ public abstract class NetworkAgent {
                     onNetworkCreated();
                     break;
                 }
+                case CMD_NETWORK_DISCONNECTED: {
+                    onNetworkDisconnected();
+                    break;
+                }
             }
         }
     }
@@ -718,6 +730,11 @@ public abstract class NetworkAgent {
         public void onNetworkCreated() {
             mHandler.sendMessage(mHandler.obtainMessage(CMD_NETWORK_CREATED));
         }
+
+        @Override
+        public void onNetworkDisconnected() {
+            mHandler.sendMessage(mHandler.obtainMessage(CMD_NETWORK_DISCONNECTED));
+        }
     }
 
     /**
@@ -1032,6 +1049,12 @@ public abstract class NetworkAgent {
      */
     public void onNetworkCreated() {}
 
+
+    /**
+     * Called when ConnectivityService has successfully destroy this NetworkAgent's native network.
+     */
+    public void onNetworkDisconnected() {}
+
     /**
      * Requests that the network hardware send the specified packet at the specified interval.
      *

services/core/java/com/android/server/ConnectivityService.java

@@ -3716,6 +3716,7 @@ public class ConnectivityService extends IConnectivityManager.Stub
             mDnsManager.removeNetwork(nai.network);
         }
         mNetIdManager.releaseNetId(nai.network.getNetId());
+        nai.onNetworkDisconnected();
     }
 
     private boolean createNativeNetwork(@NonNull NetworkAgentInfo networkAgent) {

services/core/java/com/android/server/connectivity/NetworkAgentInfo.java

@@ -588,6 +588,17 @@ public class NetworkAgentInfo implements Comparable<NetworkAgentInfo> {
         }
     }
 
+    /**
+     * Notify the NetworkAgent that the network is disconnected and destroyed.
+     */
+    public void onNetworkDisconnected() {
+        try {
+            networkAgent.onNetworkDisconnected();
+        } catch (RemoteException e) {
+            Log.e(TAG, "Error sending network disconnected event", e);
+        }
+    }
+
     // TODO: consider moving out of NetworkAgentInfo into its own class
     private class NetworkAgentMessageHandler extends INetworkAgentRegistry.Stub {
         private final Handler mHandler;