Android 试图通过套接字接收文本

我试图做一个简单的测试，将数据发送到一个套接字，然后服务器程序将数据发送回该套接字。我可以发送数据，但似乎没有收到数据。我已经检查了服务器程序，成功接收到数据，并使用wireshark监视流量，服务器程序正在发送数据，但我的客户端无法获取数据。 我隐藏了ip地址和端口，原因很明显

    Socket echoSocket = null;
    PrintWriter out = null;
    BufferedReader in = null;

    try {

        //TODO Need filshills public ip address
        echoSocket = new Socket("xxxxxx",xx);

    } catch (UnknownHostException e) {
        System.err.println("Don't know about host.");

    } catch (IOException e) {
        System.err.println("Couldn't get I/O for "
                           + "the connection to host.");

    }
    PrintWriter pw = new PrintWriter(new BufferedWriter(new OutputStreamWriter(echoSocket.getOutputStream())), true);

    //PrintWriter pw = new PrintWriter(echoSocket.getOutputStream(), true);
    pw.flush();

    pw.print("MS01,test,06,000027,01\r\n");
    pw.close();
    try{
    BufferedReader stdIn = new BufferedReader(new InputStreamReader(echoSocket.getInputStream()));
    String check = stdIn.readLine();
    check = check + "";
    //BufferedReader stdIn = new BufferedReader(new InputStreamReader(System.in));
    String userInput;

    while ((userInput = stdIn.readLine()) != null) {
        out.println(userInput);
        System.out.println("echo: " + in.readLine());
         stdIn.close();
    }
    }catch ( Exception e)
    {
        String neil = e.getMessage();
        neil = neil + "";
    }
    out.close();
    in.close();

    echoSocket.close();

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尝试不关闭

PrintWriter

，根据，

close

将关闭套接字：

关闭返回的OutputStream将关闭关联的套接字

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您确定服务器在最后发送了/r/n吗？您是否在.close（）调用后尝试过执行.flush（）？是否。stdIn始终为空。当我调用BufferedReader行开始时，它给了我一个强制关闭错误