如何使用SocketIO连接Android Client与Node.js服务器？

Question

我想从Android客户端使用SocketIO与Node.js连接，但我在Logcat中面临SocketTimeOutException。

mycode的：

MainActivity.java

package com.example.androidtestclient; 

import io.socket.IOAcknowledge; 
import io.socket.IOCallback; 
import io.socket.SocketIO; 
import io.socket.SocketIOException; 

import java.net.MalformedURLException; 

import org.json.JSONException; 
import org.json.JSONObject; 

import android.app.Activity; 
import android.os.Bundle; 
import android.util.Log; 

public class MainActivity extends Activity { 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
super.onCreate(savedInstanceState); 
setContentView(R.layout.activity_main); 

try { 
    SocketIO socket = new SocketIO("http://10.42.0.32:3000/"); 


    socket.connect(new IOCallback() { 
     @Override 
     public void onMessage(JSONObject json, IOAcknowledge ack) { 
      try { 
       System.out.println("Server said:" + json.toString(2)); 
       // display("Connectet and " + json.toString(2)); 
      } catch (JSONException e) { 
       e.printStackTrace(); 
      } 
     } 

     @Override 
     public void onMessage(String data, IOAcknowledge ack) { 
      System.out.println("Server said: " + data); 
      // display("Connectet and " + data); 
     } 

     @Override 
     public void onError(SocketIOException socketIOException) { 
      System.out.println("an Error occured"); 
      Log.d("error", "an error occured"); 
      // display("not Connectet == error occured "); 
      socketIOException.printStackTrace(); 
     } 

     @Override 
     public void onDisconnect() { 
      System.out.println("Connection terminated."); 
      Log.e("disconnect", "Connection terminated"); 
      // display("disConnectet "); 
     } 

     @Override 
     public void onConnect() { 
      System.out.println("Connection established"); 
      Log.v("connect", "Connection established"); 
      // display("Connectet and done"); 
     } 

     @Override 
     public void on(String event, IOAcknowledge ack, Object... args) { 
      System.out 
        .println("Server triggered event '" + event + "'"); 
      Log.v("ON", "Server triggered event '" + event + "'"); 
      // display("Connectet and " + event); 
     } 
    }); 

    // This line is cached until the connection is establisched. 
    socket.send("Hello Server!"); 
} catch (MalformedURLException e) { 
    // TODO Auto-generated catch block 
    e.printStackTrace(); 
} 

} } 

Node.js的代码

var http = require('http'); 
var io = require('socket.io'); 
var app = http.createServer(); 

app.listen(3000); 

console.log('Server running at http://127.0.0.1:3000/'); 

例外：

12-07 15:28:53.396: W/System.err(4141): io.socket.SocketIOException: Error while handshaking 
12-07 15:28:53.396: W/System.err(4141):  at io.socket.IOConnection.handshake(IOConnection.java:322) 
12-07 15:28:53.396: W/System.err(4141):  at io.socket.IOConnection.access$7(IOConnection.java:292) 
12-07 15:28:53.396: W/System.err(4141):  at io.socket.IOConnection$ConnectThread.run(IOConnection.java:199) 
12-07 15:28:53.396: W/System.err(4141): Caused by: java.net.SocketTimeoutException 
12-07 15:28:53.396: W/System.err(4141):  at java.net.PlainSocketImpl.read(PlainSocketImpl.java:491) 
12-07 15:28:53.396: W/System.err(4141):  at java.net.PlainSocketImpl.access$000(PlainSocketImpl.java:46) 
12-07 15:28:53.396: W/System.err(4141):  at java.net.PlainSocketImpl$PlainSocketInputStream.read(PlainSocketImpl.java:240) 
12-07 15:28:53.396: W/System.err(4141):  at java.io.InputStream.read(InputStream.java:163) 
12-07 15:28:53.396: W/System.err(4141):  at java.io.BufferedInputStream.fillbuf(BufferedInputStream.java:142) 
12-07 15:28:53.396: W/System.err(4141):  at java.io.BufferedInputStream.read(BufferedInputStream.java:227) 
12-07 15:28:53.396: W/System.err(4141):  at libcore.io.Streams.readAsciiLine(Streams.java:201) 
12-07 15:28:53.396: W/System.err(4141):  at libcore.net.http.HttpEngine.readResponseHeaders(HttpEngine.java:547) 
12-07 15:28:53.396: W/System.err(4141):  at libcore.net.http.HttpEngine.readResponse(HttpEngine.java:787) 
12-07 15:28:53.396: W/System.err(4141):  at libcore.net.http.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:274) 
12-07 15:28:53.396: W/System.err(4141):  at libcore.net.http.HttpURLConnectionImpl.getInputStream(HttpURLConnectionImpl.java:168) 
12-07 15:28:53.396: W/System.err(4141):  at io.socket.IOConnection.handshake(IOConnection.java:313) 
12-07 15:28:53.396: W/System.err(4141):  ... 2 more 

在浏览器中，我能够与localhost：3000连接，但在Android Client中遇到问题。我还在应用程序中提供了我的系统IP地址。

请给我一些解决方案，请让我知道。

Answer 1

问题是你的客户端不支持socket.io v1.0.x，你在服务器端使用socket.io v1.0。你应该降级你的服务器上的socket.io版本，或者更改你的库并使用另一个支持v1 的版本，如果你使用的是android studio，你可以使用this，但是如果你使用的是eclipse，我不知道任何支持socket .io v1