content: /*
   * Copyright (C) 2018 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;
  
  import android.annotation.NonNull;
  import android.annotation.TestApi;
  import android.os.IBinder;
  import android.os.RemoteException;
  
  import com.android.internal.util.Preconditions;
  
  /**
   * Class that allows creation and management of per-app, test-only networks
   *
   * @hide
   */
  @TestApi
  public class TestNetworkManager {
      @NonNull private static final String TAG = TestNetworkManager.class.getSimpleName();
  
      @NonNull private final ITestNetworkManager mService;
  
      /** @hide */
      public TestNetworkManager(@NonNull ITestNetworkManager service) {
          mService = Preconditions.checkNotNull(service, "missing ITestNetworkManager");
      }
  
      /**
       * Teardown the capability-limited, testing-only network for a given interface
       *
       * @param network The test network that should be torn down
       * @hide
       */
      @TestApi
      public void teardownTestNetwork(@NonNull Network network) {
          try {
              mService.teardownTestNetwork(network.netId);
          } catch (RemoteException e) {
              throw e.rethrowFromSystemServer();
          }
      }
  
      /**
       * Sets up a capability-limited, testing-only network for a given interface
       *
       * @param iface the name of the interface to be used for the Network LinkProperties.
       * @param binder A binder object guarding the lifecycle of this test network.
       * @hide
       */
      @TestApi
      public void setupTestNetwork(@NonNull String iface, @NonNull IBinder binder) {
          try {
              mService.setupTestNetwork(iface, binder);
          } catch (RemoteException e) {
              throw e.rethrowFromSystemServer();
          }
      }
  
      /**
       * Create a tun interface for testing purposes
       *
       * @param linkAddrs an array of LinkAddresses to assign to the TUN interface
       * @return A ParcelFileDescriptor of the underlying TUN interface. Close this to tear down the
       *     TUN interface.
       * @hide
       */
      @TestApi
      public TestNetworkInterface createTunInterface(@NonNull LinkAddress[] linkAddrs) {
          try {
              return mService.createTunInterface(linkAddrs);
          } catch (RemoteException e) {
              throw e.rethrowFromSystemServer();
          }
      }
  
      /**
       * Create a tap interface for testing purposes
       *
       * @return A ParcelFileDescriptor of the underlying TAP interface. Close this to tear down the
       *     TAP interface.
       * @hide
       */
      @TestApi
      public TestNetworkInterface createTapInterface() {
          try {
              return mService.createTapInterface();
          } catch (RemoteException e) {
              throw e.rethrowFromSystemServer();
          }
      }
  
  }
  