C++ SelectServer::RemoveReadDescriptor方法代码示例

/**
 * Generic method to test server initiated close
 */
void SocketTest::SocketServerClose(ConnectedDescriptor *socket,
                                   ConnectedDescriptor *socket2) {
  OLA_ASSERT_NOT_NULL(socket);
  socket->SetOnData(ola::NewCallback(
        this, &SocketTest::Receive,
        static_cast<ConnectedDescriptor*>(socket)));
  socket->SetOnClose(
      ola::NewSingleCallback(this, &SocketTest::TerminateOnClose));
  OLA_ASSERT_TRUE(m_ss->AddReadDescriptor(socket));

  OLA_ASSERT_TRUE(socket2);
  socket2->SetOnData(ola::NewCallback(
        this, &SocketTest::ReceiveSendAndClose,
        static_cast<ConnectedDescriptor*>(socket2)));
  OLA_ASSERT_TRUE(m_ss->AddReadDescriptor(socket2));

  ssize_t bytes_sent = socket->Send(
      static_cast<const uint8_t*>(test_cstring),
      sizeof(test_cstring));
  OLA_ASSERT_EQ(static_cast<ssize_t>(sizeof(test_cstring)), bytes_sent);
  m_ss->Run();
  m_ss->RemoveReadDescriptor(socket);
  m_ss->RemoveReadDescriptor(socket2);
  delete socket2;
}

/*
 * Test UDP sockets with an IOQueue work correctly.
 * The client connects and the server sends some data. The client checks the
 * data matches and then closes the connection.
 */
void SocketTest::testIOQueueUDPSend() {
  IPV4SocketAddress socket_address(IPV4Address::Loopback(), 9010);
  UDPSocket socket;
  OLA_ASSERT_TRUE(socket.Init());
  OLA_ASSERT_FALSE(socket.Init());
  OLA_ASSERT_TRUE(socket.Bind(socket_address));
  OLA_ASSERT_FALSE(socket.Bind(socket_address));

  socket.SetOnData(
      ola::NewCallback(this, &SocketTest::UDPReceiveAndSend, &socket));
  OLA_ASSERT_TRUE(m_ss->AddReadDescriptor(&socket));

  UDPSocket client_socket;
  OLA_ASSERT_TRUE(client_socket.Init());
  OLA_ASSERT_FALSE(client_socket.Init());

  client_socket.SetOnData(
      ola::NewCallback(
        this, &SocketTest::UDPReceiveAndTerminate,
        static_cast<UDPSocket*>(&client_socket)));
  OLA_ASSERT_TRUE(m_ss->AddReadDescriptor(&client_socket));

  IOQueue output;
  output.Write(static_cast<const uint8_t*>(test_cstring), sizeof(test_cstring));
  ssize_t bytes_sent = client_socket.SendTo(&output, socket_address);
  OLA_ASSERT_EQ(static_cast<ssize_t>(sizeof(test_cstring)), bytes_sent);
  m_ss->Run();
  m_ss->RemoveReadDescriptor(&socket);
  m_ss->RemoveReadDescriptor(&client_socket);
}

/*
 * Confirm we can't add the same descriptor twice.
 */
void SelectServerTest::testDoubleAddAndRemove() {
  OLA_ASSERT_EQ(1, connected_read_descriptor_count->Get());  // internal socket
  OLA_ASSERT_EQ(0, read_descriptor_count->Get());
  OLA_ASSERT_EQ(0, write_descriptor_count->Get());

  LoopbackDescriptor loopback_socket;
  loopback_socket.Init();

  OLA_ASSERT_TRUE(m_ss->AddReadDescriptor(&loopback_socket));
  OLA_ASSERT_EQ(2, connected_read_descriptor_count->Get());
  OLA_ASSERT_EQ(0, read_descriptor_count->Get());
  OLA_ASSERT_EQ(0, write_descriptor_count->Get());

  OLA_ASSERT_TRUE(m_ss->AddWriteDescriptor(&loopback_socket));
  OLA_ASSERT_EQ(2, connected_read_descriptor_count->Get());
  OLA_ASSERT_EQ(0, read_descriptor_count->Get());
  OLA_ASSERT_EQ(1, write_descriptor_count->Get());

  m_ss->RemoveReadDescriptor(&loopback_socket);
  OLA_ASSERT_EQ(1, connected_read_descriptor_count->Get());
  OLA_ASSERT_EQ(0, read_descriptor_count->Get());
  OLA_ASSERT_EQ(1, write_descriptor_count->Get());

  m_ss->RemoveWriteDescriptor(&loopback_socket);
  OLA_ASSERT_EQ(1, connected_read_descriptor_count->Get());
  OLA_ASSERT_EQ(0, read_descriptor_count->Get());
  OLA_ASSERT_EQ(0, write_descriptor_count->Get());

  // Trying to remove a second time shouldn't crash
  m_ss->RemoveReadDescriptor(&loopback_socket);
  m_ss->RemoveWriteDescriptor(&loopback_socket);
}

/*
 * Test TCP sockets work correctly.
 * The client connects and the server then sends some data and closes the
 * connection.
 */
void SocketTest::testTCPSocketServerClose() {
  IPV4SocketAddress socket_address(IPV4Address::Loopback(), 0);
  ola::network::TCPSocketFactory socket_factory(
      ola::NewCallback(this, &SocketTest::NewConnectionSendAndClose));
  TCPAcceptingSocket socket(&socket_factory);
  OLA_ASSERT_TRUE_MSG(socket.Listen(socket_address),
                      "Check for another instance of olad running");

  OLA_ASSERT_FALSE(socket.Listen(socket_address));

  GenericSocketAddress local_address = socket.GetLocalAddress();
  OLA_ASSERT_EQ(static_cast<uint16_t>(AF_INET), local_address.Family());

  OLA_ASSERT_TRUE(m_ss->AddReadDescriptor(&socket));

  // The client socket checks the response and terminates on close
  TCPSocket *client_socket = TCPSocket::Connect(local_address);
  OLA_ASSERT_NOT_NULL(client_socket);

  client_socket->SetOnData(ola::NewCallback(
        this, &SocketTest::Receive,
        static_cast<ConnectedDescriptor*>(client_socket)));
  client_socket->SetOnClose(
      ola::NewSingleCallback(this, &SocketTest::TerminateOnClose));
  OLA_ASSERT_TRUE(m_ss->AddReadDescriptor(client_socket));

  m_ss->Run();
  m_ss->RemoveReadDescriptor(&socket);
  m_ss->RemoveReadDescriptor(client_socket);
  delete client_socket;
}

/*
 * Test UDP sockets work correctly.
 * The client connects and the server sends some data. The client checks the
 * data matches and then closes the connection.
 */
void SocketTest::testUDPSocket() {
  IPV4SocketAddress socket_address(IPV4Address::Loopback(), 0);
  UDPSocket socket;
  OLA_ASSERT_TRUE(socket.Init());
  OLA_ASSERT_FALSE(socket.Init());
  OLA_ASSERT_TRUE(socket.Bind(socket_address));
  OLA_ASSERT_FALSE(socket.Bind(socket_address));

  IPV4SocketAddress local_address;
  OLA_ASSERT_TRUE(socket.GetSocketAddress(&local_address));
  OLA_ASSERT_EQ(static_cast<uint16_t>(AF_INET), local_address.Family());

  socket.SetOnData(
      ola::NewCallback(this, &SocketTest::UDPReceiveAndSend, &socket));
  OLA_ASSERT_TRUE(m_ss->AddReadDescriptor(&socket));

  UDPSocket client_socket;
  OLA_ASSERT_TRUE(client_socket.Init());
  OLA_ASSERT_FALSE(client_socket.Init());

  client_socket.SetOnData(
      ola::NewCallback(
        this, &SocketTest::UDPReceiveAndTerminate,
        static_cast<UDPSocket*>(&client_socket)));
  OLA_ASSERT_TRUE(m_ss->AddReadDescriptor(&client_socket));

  ssize_t bytes_sent = client_socket.SendTo(
      static_cast<const uint8_t*>(test_cstring),
      sizeof(test_cstring),
      local_address);
  OLA_ASSERT_EQ(static_cast<ssize_t>(sizeof(test_cstring)), bytes_sent);
  m_ss->Run();
  m_ss->RemoveReadDescriptor(&socket);
  m_ss->RemoveReadDescriptor(&client_socket);
}

/*
 * Check AddReadDescriptor/RemoveReadDescriptor works correctly and that the
 * export map is updated.
 */
void SelectServerTest::testAddRemoveReadDescriptor() {
  OLA_ASSERT_EQ(1, connected_read_descriptor_count->Get());
  OLA_ASSERT_EQ(0, read_descriptor_count->Get());
  OLA_ASSERT_EQ(0, write_descriptor_count->Get());

  LoopbackDescriptor loopback;
  loopback.Init();

  OLA_ASSERT_TRUE(m_ss->AddReadDescriptor(&loopback));
  OLA_ASSERT_EQ(2, connected_read_descriptor_count->Get());
  OLA_ASSERT_EQ(0, read_descriptor_count->Get());
  OLA_ASSERT_EQ(0, write_descriptor_count->Get());

  // Add a udp socket
  UDPSocket udp_socket;
  OLA_ASSERT_TRUE(udp_socket.Init());
  OLA_ASSERT_TRUE(m_ss->AddReadDescriptor(&udp_socket));
  OLA_ASSERT_EQ(2, connected_read_descriptor_count->Get());
  OLA_ASSERT_EQ(1, read_descriptor_count->Get());
  OLA_ASSERT_EQ(0, write_descriptor_count->Get());

  // Check remove works
  m_ss->RemoveReadDescriptor(&loopback);
  OLA_ASSERT_EQ(1, connected_read_descriptor_count->Get());
  OLA_ASSERT_EQ(1, read_descriptor_count->Get());
  OLA_ASSERT_EQ(0, write_descriptor_count->Get());

  m_ss->RemoveReadDescriptor(&udp_socket);
  OLA_ASSERT_EQ(1, connected_read_descriptor_count->Get());
  OLA_ASSERT_EQ(0, read_descriptor_count->Get());
  OLA_ASSERT_EQ(0, write_descriptor_count->Get());
}

/*
 * Test non-blocking TCP connects work correctly.
 */
void TCPConnectorTest::testNonBlockingConnect() {
  ola::network::TCPSocketFactory socket_factory(
      ola::NewCallback(this, &TCPConnectorTest::AcceptedConnection));


  TCPAcceptingSocket listening_socket(&socket_factory);
  IPV4SocketAddress listen_address(m_localhost, 0);
  OLA_ASSERT_TRUE_MSG(listening_socket.Listen(listen_address),
                      "Failed to listen");
  GenericSocketAddress addr = listening_socket.GetLocalAddress();
  OLA_ASSERT_TRUE(addr.IsValid());

  // calling listen a second time should fail
  OLA_ASSERT_FALSE(listening_socket.Listen(listen_address));

  OLA_ASSERT_TRUE(m_ss->AddReadDescriptor(&listening_socket));

  // now attempt a non-blocking connect
  // because we're connecting to the localhost this may run this callback
  // immediately.
  TCPConnector connector(m_ss);
  TimeInterval connect_timeout(0, CONNECT_TIMEOUT_IN_MS * 1000);
  TCPConnector::TCPConnectionID id = connector.Connect(
      addr.V4Addr(),
      connect_timeout,
      ola::NewSingleCallback(this, &TCPConnectorTest::OnConnect));
  OLA_ASSERT_TRUE(id);

  m_ss->Run();
  OLA_ASSERT_EQ(0u, connector.ConnectionsPending());
  m_ss->RemoveReadDescriptor(&listening_socket);
}

void RpcChannelTest::tearDown() {
  m_ss.RemoveReadDescriptor(m_socket);
  delete m_socket;
  delete m_stub;
  delete m_channel;
  delete m_service;
}

/*
 * Check AddReadDescriptor/RemoveReadDescriptor works correctly and that the
 * export map is updated.
 */
void SelectServerTest::testAddRemoveReadDescriptor() {
  LoopbackDescriptor bad_socket;
  IntegerVariable *connected_socket_count =
    m_map->GetIntegerVar(PollerInterface::K_CONNECTED_DESCRIPTORS_VAR);
  IntegerVariable *socket_count =
    m_map->GetIntegerVar(PollerInterface::K_READ_DESCRIPTOR_VAR);
  OLA_ASSERT_EQ(1, connected_socket_count->Get());  // internal socket
  OLA_ASSERT_EQ(0, socket_count->Get());
  // adding and removin a non-connected socket should fail
  OLA_ASSERT_FALSE(m_ss->AddReadDescriptor(&bad_socket));
  OLA_ASSERT_FALSE(m_ss->RemoveReadDescriptor(&bad_socket));

  LoopbackDescriptor loopback_socket;
  loopback_socket.Init();
  OLA_ASSERT_EQ(1, connected_socket_count->Get());
  OLA_ASSERT_EQ(0, socket_count->Get());
  OLA_ASSERT_TRUE(m_ss->AddReadDescriptor(&loopback_socket));
  // Adding a second time should fail
  OLA_ASSERT_FALSE(m_ss->AddReadDescriptor(&loopback_socket));
  OLA_ASSERT_EQ(2, connected_socket_count->Get());
  OLA_ASSERT_EQ(0, socket_count->Get());

  // Add a udp socket
  UDPSocket udp_socket;
  OLA_ASSERT_TRUE(udp_socket.Init());
  OLA_ASSERT_TRUE(m_ss->AddReadDescriptor(&udp_socket));
  OLA_ASSERT_FALSE(m_ss->AddReadDescriptor(&udp_socket));
  OLA_ASSERT_EQ(2, connected_socket_count->Get());
  OLA_ASSERT_EQ(1, socket_count->Get());

  // Check remove works
  OLA_ASSERT_TRUE(m_ss->RemoveReadDescriptor(&loopback_socket));
  OLA_ASSERT_EQ(1, connected_socket_count->Get());
  OLA_ASSERT_EQ(1, socket_count->Get());
  OLA_ASSERT_TRUE(m_ss->RemoveReadDescriptor(&udp_socket));
  OLA_ASSERT_EQ(1, connected_socket_count->Get());
  OLA_ASSERT_EQ(0, socket_count->Get());

  // Remove again should fail
  OLA_ASSERT_FALSE(m_ss->RemoveReadDescriptor(&loopback_socket));
}

 void SocketClosed(TCPSocket *socket) {
   OLA_INFO << "Socket @ " << socket << " was closed";
   vector<TCPSocket*>::iterator iter = m_sockets.begin();
   for (; iter != m_sockets.end(); ++iter) {
     if (*iter == socket) {
       m_ss.RemoveReadDescriptor(socket);
       socket->Close();
       delete socket;
       m_sockets.erase(iter);
       break;
     }
   }
 }

/**
 * Test that pausing a connection works.
 */
void AdvancedTCPConnectorTest::testPause() {
  ola::network::TCPSocketFactory socket_factory(
      ola::NewCallback(this, &AdvancedTCPConnectorTest::AcceptedConnection));
  TCPAcceptingSocket listening_socket(&socket_factory);
  SetupListeningSocket(&listening_socket);

  AdvancedTCPConnector connector(
      m_ss,
      m_tcp_socket_factory.get(),
      TimeInterval(0, CONNECT_TIMEOUT_IN_MS * 1000));

  // 5 per attempt, up to a max of 30
  LinearBackoffPolicy policy(TimeInterval(5, 0), TimeInterval(30, 0));
  // add endpoint, but make sure it's paused
  connector.AddEndpoint(m_server_address, &policy, true);
  OLA_ASSERT_EQ(1u, connector.EndpointCount());

  ConfirmState(__LINE__, connector, m_server_address,
               AdvancedTCPConnector::PAUSED, 0);

  m_ss->RunOnce(TimeInterval(0, 500000));

  // now unpause
  connector.Resume(m_server_address);
  // The socket may be connected immediately depending on the platform.
  AdvancedTCPConnector::ConnectionState state;
  unsigned int failed_attempts;
  connector.GetEndpointState(m_server_address, &state, &failed_attempts);
  if (state == AdvancedTCPConnector::DISCONNECTED) {
    m_ss->Run();
  }
  OLA_ASSERT_EQ(1u, connector.EndpointCount());
  ConfirmState(__LINE__, connector, m_server_address,
               AdvancedTCPConnector::CONNECTED, 0);

  // check our socket exists
  OLA_ASSERT_TRUE(m_connected_socket);
  m_connected_socket->Close();
  delete m_connected_socket;
  connector.Disconnect(m_server_address, true);

  // state should be updated
  ConfirmState(__LINE__, connector, m_server_address,
               AdvancedTCPConnector::PAUSED, 0);

  // clean up
  connector.RemoveEndpoint(m_server_address);
  OLA_ASSERT_EQ(0u, connector.EndpointCount());

  m_ss->RemoveReadDescriptor(&listening_socket);
}

/**
 * Test that pausing a connection works.
 */
void AdvancedTCPConnectorTest::testPause() {
  ola::network::TCPSocketFactory socket_factory(
      ola::NewCallback(this, &AdvancedTCPConnectorTest::AcceptedConnection));
  TcpAcceptingSocket listening_socket(&socket_factory);
  SetupListeningSocket(&listening_socket);

  AdvancedTCPConnector connector(
      m_ss,
      m_tcp_socket_factory.get(),
      TimeInterval(0, CONNECT_TIMEOUT_IN_MS * 1000));

  // 5 per attempt, up to a max of 30
  LinearBackoffPolicy policy(TimeInterval(5, 0), TimeInterval(30, 0));
  // add endpoint, but make sure it's paused
  connector.AddEndpoint(m_localhost, SERVER_PORT, &policy, true);
  CPPUNIT_ASSERT_EQUAL(1u, connector.EndpointCount());

  ConfirmState(__LINE__, connector, m_localhost, SERVER_PORT,
               AdvancedTCPConnector::PAUSED, 0);

  m_ss->RunOnce(0, 500000);

  // now unpause
  connector.Resume(m_localhost, SERVER_PORT);
  ConfirmState(__LINE__, connector, m_localhost, SERVER_PORT,
               AdvancedTCPConnector::DISCONNECTED, 0);

  m_ss->Run();

  CPPUNIT_ASSERT_EQUAL(1u, connector.EndpointCount());
  ConfirmState(__LINE__, connector, m_localhost, SERVER_PORT,
               AdvancedTCPConnector::CONNECTED, 0);

  // check our socket exists
  CPPUNIT_ASSERT(m_connected_socket);
  m_connected_socket->Close();
  delete m_connected_socket;
  OLA_INFO << "disconnecting";
  connector.Disconnect(m_localhost, SERVER_PORT, true);

  // state should be updated
  ConfirmState(__LINE__, connector, m_localhost, SERVER_PORT,
               AdvancedTCPConnector::PAUSED, 0);

  // clean up
  connector.RemoveEndpoint(m_localhost, SERVER_PORT);
  CPPUNIT_ASSERT_EQUAL(0u, connector.EndpointCount());

  m_ss->RemoveReadDescriptor(&listening_socket);
}

/*
 * Check AddReadDescriptor/RemoveReadDescriptor works correctly and that the
 * export map is updated.
 */
void SelectServerTest::testAddRemoveReadDescriptor() {
  OLA_ASSERT_EQ(1, connected_read_descriptor_count->Get());
  OLA_ASSERT_EQ(0, read_descriptor_count->Get());
  OLA_ASSERT_EQ(0, write_descriptor_count->Get());

  LoopbackDescriptor bad_socket;
  // adding and removing a non-connected socket should fail
  OLA_ASSERT_FALSE(m_ss->AddReadDescriptor(&bad_socket));
  m_ss->RemoveReadDescriptor(&bad_socket);

  LoopbackDescriptor loopback_socket;
  loopback_socket.Init();

  OLA_ASSERT_TRUE(m_ss->AddReadDescriptor(&loopback_socket));
  OLA_ASSERT_EQ(2, connected_read_descriptor_count->Get());
  OLA_ASSERT_EQ(0, read_descriptor_count->Get());
  OLA_ASSERT_EQ(0, write_descriptor_count->Get());

  // Add a udp socket
  UDPSocket udp_socket;
  OLA_ASSERT_TRUE(udp_socket.Init());
  OLA_ASSERT_TRUE(m_ss->AddReadDescriptor(&udp_socket));
  OLA_ASSERT_EQ(2, connected_read_descriptor_count->Get());
  OLA_ASSERT_EQ(1, read_descriptor_count->Get());
  OLA_ASSERT_EQ(0, write_descriptor_count->Get());

  // Check remove works
  m_ss->RemoveReadDescriptor(&loopback_socket);
  OLA_ASSERT_EQ(1, connected_read_descriptor_count->Get());
  OLA_ASSERT_EQ(1, read_descriptor_count->Get());
  OLA_ASSERT_EQ(0, write_descriptor_count->Get());

  m_ss->RemoveReadDescriptor(&udp_socket);
  OLA_ASSERT_EQ(1, connected_read_descriptor_count->Get());
  OLA_ASSERT_EQ(0, read_descriptor_count->Get());
  OLA_ASSERT_EQ(0, write_descriptor_count->Get());
}

/*
 * Confirm we can't add invalid descriptors to the SelectServer
 */
void SelectServerTest::testAddInvalidDescriptor() {
  OLA_ASSERT_EQ(1, connected_read_descriptor_count->Get());  // internal socket
  OLA_ASSERT_EQ(0, read_descriptor_count->Get());
  OLA_ASSERT_EQ(0, write_descriptor_count->Get());

  // Adding and removing a uninitialized socket should fail
  LoopbackDescriptor bad_socket;
  OLA_ASSERT_FALSE(m_ss->AddReadDescriptor(&bad_socket));
  OLA_ASSERT_FALSE(m_ss->AddWriteDescriptor(&bad_socket));
  m_ss->RemoveReadDescriptor(&bad_socket);
  m_ss->RemoveWriteDescriptor(&bad_socket);

  OLA_ASSERT_EQ(1, connected_read_descriptor_count->Get());  // internal socket
  OLA_ASSERT_EQ(0, read_descriptor_count->Get());
  OLA_ASSERT_EQ(0, write_descriptor_count->Get());
}

/*
 * Test the interaction between read and write descriptor.
 */
void SelectServerTest::testReadWriteInteraction() {
  UnixSocket socket;
  socket.Init();
  socket.SetOnClose(NewSingleCallback(this, &SelectServerTest::Terminate));

  OLA_ASSERT_TRUE(m_ss->AddReadDescriptor(&socket));
  OLA_ASSERT_TRUE(m_ss->AddWriteDescriptor(&socket));
  m_ss->RemoveWriteDescriptor(&socket);

  // now the Write end closes
  auto_ptr<UnixSocket> other_end(socket.OppositeEnd());
  other_end->CloseClient();

  m_ss->RegisterSingleTimeout(
      100, ola::NewSingleCallback(this, &SelectServerTest::FatalTimeout));
  m_ss->Run();
  m_ss->RemoveReadDescriptor(&socket);
  OLA_ASSERT_EQ(1, connected_read_descriptor_count->Get());
  OLA_ASSERT_EQ(0, read_descriptor_count->Get());
}