无法从Android中的TCP / IP开放端口读取数据

Question

嗨，我是Socket编程的新手，下面是我尝试使用TCP / IP端口连接并能够成功连接的代码。

连接后，我会向PORT发送一条消息，并且PORT会收到它。

现在，我在从PORT读取数据时遇到问题

样本代码

 Thread clientThread = new Thread(new Runnable() {
        @Override
        public void run() {
            try {

                socket = new Socket(ipNumber, portNumber);
                Log.d("debug","@@socket=="+socket);
                // attach to socket's output stream with auto flush turned on
                // Send message to the server
                out = new PrintWriter(socket.getOutputStream(),true);
                Log.d("debug","the message is"+out.toString());
                out.println(message);

                // Receive data from port and update in Ui
                InputStream inputStream = socket.getInputStream();
                byte result[] = readBytes(inputStream);
                String s = new String(result);
                Log.d("debug","the string result is="+s);

            } catch (Exception e) {
                e.printStackTrace();
                final String message = e.getMessage();
                Log.d("debug","the error message is"+message);
                runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        if(!((Activity) MainActivity.this).isFinishing()){
                            if (message.startsWith("failed to connect")){
                                new AlertDialog.Builder(MainActivity.this)
                                        .setCancelable(false)
                                        .setTitle(getString(R.string.dialog_alert))
                                        .setMessage(getString(R.string.unable_to_connect_port))
                                        .setPositiveButton(getString(R.string.dialog_ok), new DialogInterface.OnClickListener() {
                                            public void onClick(DialogInterface dialog, int whichButton) {
                                                dialog.dismiss();

                                            }
                                        }).show();

                            }
                            else if (message.equalsIgnoreCase("Connection reset")){
                                new AlertDialog.Builder(MainActivity.this)
                                        .setCancelable(false)
                                        .setTitle(getString(R.string.dialog_alert))
                                        .setMessage(getString(R.string.connection_closed))
                                        .setPositiveButton(getString(R.string.dialog_ok), new DialogInterface.OnClickListener() {
                                            @Override
                                            public void onClick(DialogInterface dialog, int which) {
                                                dialog.dismiss();
                                            }
                                        }).show();
                            }
                        }
                    }
                });
            }
        }
    });
    clientThread.start();


public byte[] readBytes(InputStream inputStream) throws IOException {
        // this dynamically extends to take the bytes you read
        ByteArrayOutputStream byteBuffer = new ByteArrayOutputStream();

        // this is storage overwritten on each iteration with bytes
        int bufferSize = 1024;
        byte[] buffer = new byte[bufferSize];

        // we need to know how may bytes were read to write them to the byteBuffer
        int len = 0;
        while ((len = inputStream.read(buffer)) != -1) {
            byteBuffer.write(buffer, 0, len);
        }
        // and then we can return your byte array.
        return byteBuffer.toByteArray();
    }

请帮助我了解如何从开放的TCP / IP端口读取数据。任何帮助将不胜感激。