php - 使用android和php进行Socket编程

Question

我正在尝试创建一个使用套接字连接到 php 服务器的 Android 应用程序。下面是我用于实现套接字服务器的 php 代码。

<?php
    set_time_limit (0);
    $address = '127.0.0.1';
    $port = 8111;
    $sock = socket_create(AF_INET, SOCK_STREAM, 0);
    socket_bind($sock, $address, $port) or die('Could not bind to address');
    socket_listen($sock);
    $client = socket_accept($sock);
    $input = socket_read($client, 1024);
    $output = $input;
    socket_write($client, $output);
    socket_close($client);
    socket_close($sock);
?>

Android客户端代码：

package com.example.simpleclient;

import com.example.simpleclient.util.SystemUiHider;

import java.io.BufferedWriter;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.InetAddress;
import java.net.Socket;
import java.net.UnknownHostException;

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.view.View;

/**
 * An example full-screen activity that shows and hides the system UI (i.e.
 * status bar and navigation/system bar) with user interaction.
 * 
 * @see SystemUiHider
 */
public class FullscreenActivity extends Activity {
    private Button bt;
       private TextView tv;
       private Socket socket;
       private String serverIpAddress = "192.168.2.11";
       // AND THAT'S MY DEV'T MACHINE WHERE PACKETS TO
       // PORT 5000 GET REDIRECTED TO THE SERVER EMULATOR'S
       // PORT 6000
       private static final int REDIRECTED_SERVERPORT = 8111;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_fullscreen);
          bt = (Button) findViewById(R.id.myButton);
          tv = (TextView) findViewById(R.id.myTextView);
          try {
             InetAddress serverAddr = InetAddress.getByName(serverIpAddress);
             socket = new Socket(serverAddr, REDIRECTED_SERVERPORT);
          } catch (UnknownHostException e1) {
             e1.printStackTrace();
          } catch (IOException e1) {
             e1.printStackTrace();
          }
          bt.setOnClickListener(new OnClickListener() {
             public void onClick(View v) {
                try {
                   EditText et = (EditText) findViewById(R.id.EditText01);
                   String str = et.getText().toString();
                   PrintWriter out = new PrintWriter(new BufferedWriter(new OutputStreamWriter(socket.getOutputStream())),true);
                   out.println(str);
                   Log.d("Client", "Client sent message");
                } catch (UnknownHostException e) {
                   tv.setText("Error1");
                   e.printStackTrace();
                } catch (IOException e) {
                   tv.setText("Error2");
                   e.printStackTrace();
                } catch (Exception e) {
                   tv.setText("Error3");
                   e.printStackTrace();
                }
             }
          });
    }


}

192.168.2.11 是我托管服务器的系统的 ip。我附上了我的 android 代码中断的调试器屏幕截图。请看一看。

我无法将 android 应用程序连接到 php 服务器