如何使用SocketIO连接Android客户端与Node.js服务器？

我试图从Android客户端使用SocketIO与Node.js连接，但我正面临Logcat中的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，我能够连接localhost：3000，但在Android客户端面临问题。 我也给了我的系统IP地址在应用程序。

请给我一些解决scheme，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，或者改变你的库并使用另一个支持v1的版本，如果你使用的是android studio，你可以使用它，但是如果你使用的是eclipse，我不知道任何支持socket的库。 io v1