[Ch15] Test to see if the server port really does change. If it does, it doesn't _appear_ to

    Socket socket = new Socket("localhost", 4242);

  }

  @Test

  void testChannelPortNumbers() throws IOException {

    SocketAddress serverAddress = new InetSocketAddress("127.0.0.1", 3601);

    ServerSocketChannel serverSocketChannel = ServerSocketChannel.open();

    serverSocketChannel.bind(serverAddress);

    SocketChannel client1 = SocketChannel.open(serverAddress);

    System.out.println("client1.getRemoteAddress() = " + client1.getRemoteAddress());

    SocketChannel client2 = SocketChannel.open(serverAddress);

    System.out.println("client2.getRemoteAddress() = " + client2.getRemoteAddress());

  }

  @Test

  void testBlockingVsNonBlocking() throws IOException {

    int serverPort = 3600;