Android套接字错误

Question

我正在用Linux做服务器。 和客户端是Android。 android客户端和linux服务器在同一局域网中。 但是linux服务器无法捕获客户端的连接。 我的代码有什么问题？

（客户）

package com.example.hello;

import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.InetAddress;
import java.net.ServerSocket;
import java.net.Socket;

import android.support.v7.app.ActionBarActivity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;
import java.net.InetAddress;
import java.net.InetAddress;
import java.net.InetAddress;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.LinkedList;
public class MainActivity extends ActionBarActivity {
    private Button Btn_Connect;

     private static final int ERROR = -1;
     private static final int DATA = 2;
     private static final String ERROR_KEY = "_error";
     private static final String DATA_KEY = "_data";
     private static int port = 8888;
     LinkedList<SocketClient> threadList;



    @Override
    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        threadList = new LinkedList<MainActivity.SocketClient>();
        Btn_Connect = (Button) findViewById(R.id.Btn_cennect);



        Btn_Connect.setOnClickListener(new OnClickListener() {
             Socket socket = null;  
            @Override
            public void onClick(View v) {
                //Toast.makeText(getApplicationContext(), "asasdfsdf", 100).show();
                Log.d("msg", "park0");

                SocketClient client = new SocketClient("192.168.171.129");
                threadList.add(client);
                client.start();

                Intent intent = new Intent(MainActivity.this, Connected.class);
                startActivity(intent);



            }
        });
    }


    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();
        if (id == R.id.action_settings) {
            return true;
        }
        return super.onOptionsItemSelected(item);
    }

    class SocketClient extends Thread{
        boolean threadAlive;
        String ip;
        public SocketClient(String ip){
               threadAlive = true;
               this.ip = ip;
        }

        @Override
        public void run() {
               Socket socket = null;
               InputStream inputStream = null;
               BufferedInputStream bufStream = null;
               try {
                      socket = new Socket(ip,port);
                      inputStream = socket.getInputStream();
                  //    bufStream = new BufferedInputStream(inputStream);
                      int len = 0;
                      byte[] readBytes = new byte[1000];
                      while( (len = bufStream.read(readBytes)) != -1 ){
                      //      Message msg = Message.obtain();
                        //    msg.what = DATA;
                          //  Bundle bundle = new Bundle();
              //              bundle.putString(DATA_KEY, new String(readBytes, 0, len));
                //            msg.setData(bundle);
                          //  uiHandler.sendMessage(msg);
                      }

               } catch (Exception e) {
              //        Message msg = Message.obtain();
                //      msg.what = ERROR;
              //        Bundle bundle = new Bundle();
                //      bundle.putString(ERROR_KEY, e.toString());
                  //    msg.setData(bundle);
                    //  uiHandler.sendMessage(msg);
               } finally{
                      try {
                            bufStream.close();
                            inputStream.close();
                            socket.close();
                      } catch (IOException e) {
//                            Message msg = Message.obtain();
//                            msg.what = ERROR;
//                            Bundle bundle = new Bundle();
//                            bundle.putString(ERROR_KEY, e.toString());
//                            msg.setData(bundle);
//                            uiHandler.sendMessage(msg);     
                      }
               }
        }
  }



}

Answer 1

public class ChatApplication extends Application {

    private Socket mSocket;
    {
        try {
            mSocket = IO.socket(Constants.CHAT_SERVER_URL);
        } catch (URISyntaxException e) {
            throw new RuntimeException(e);
        }
    }

    public Socket getSocket() {
        return mSocket;
    }
}

这将返回套接字。