new Callback<SocketRpcProtos.Response>();
rpcForwarder.doRpc(RPC_REQUEST, rpcCallback);
assertTrue(rpcCallback.isInvoked());
rpcResponse = rpcCallback.getResponse();
assertTrue(rpcResponse.getCallback());
assertEquals(response.toByteString(), rpcResponse.getResponseProto());
// Register BlockingService
response = Response.newBuilder().setStrData("New Data").build();
rpcForwarder.registerBlockingService(new FakeServiceImpl(REQUEST)
.withResponse(response).toBlockingService());