Ошибка подключения Android-клиента к серверу сокетов в NodeJS

Question

У меня есть сервер Socket, работающий в NodeJS. Я подключил из консольного приложения с этой библиотекой:

https://github.com/Gottox/socket.io-java-client

Я использовал пример приложения (по ссылке), и он работает правильно. Затем я переводил этот код в приложение для Android, но он не подключается к Серверу. Я помещал сетевые разрешения приложения в файл «androidmanifest», но он тоже не работал.

Ниже приведена ошибка при запуске приложения. Заранее спасибо за помощь ...

02-04 00:56:51.717: D/dalvikvm(971): Late-enabling CheckJNI 
02-04 00:56:51.749: D/dalvikvm(971): Debugger has detached; object registry had 1 entries 
02-04 00:56:51.761: E/Trace(971): error opening trace file: No such file or directory (2) 
02-04 00:56:51.837: W/dalvikvm(971): Unable to resolve superclass of Lio/socket/WebsocketTransport; (851) 
02-04 00:56:51.837: W/dalvikvm(971): Link of class 'Lio/socket/WebsocketTransport;' failed 
02-04 00:56:51.837: I/dalvikvm(971): Could not find method io.socket.WebsocketTransport.create, referenced from method io.socket.IOConnection.connectTransport 
02-04 00:56:51.837: W/dalvikvm(971): VFY: unable to resolve static method 5178: Lio/socket/WebsocketTransport;.create (Ljava/net/URL;Lio/socket/IOConnection;)Lio/socket/IOTransport; 
02-04 00:56:51.837: D/dalvikvm(971): VFY: replacing opcode 0x71 at 0x001a 
02-04 00:56:51.901: I/System.out(971): an Error occured 
02-04 00:56:51.901: W/System.err(971): io.socket.SocketIOException: Error while handshaking 
02-04 00:56:51.901: W/System.err(971): at io.socket.IOConnection.handshake(IOConnection.java:322) 
02-04 00:56:51.901: W/System.err(971): at io.socket.IOConnection.access$7(IOConnection.java:292) 
02-04 00:56:51.901: W/System.err(971): at io.socket.IOConnection$ConnectThread.run(IOConnection.java:199) 
02-04 00:56:51.901: W/System.err(971): Caused by: java.net.ConnectException: failed to connect to /127.0.0.1 (port 3000) after 10000ms: isConnected failed: ECONNREFUSED (Connection refused) 
02-04 00:56:51.905: W/System.err(971): at libcore.io.IoBridge.isConnected(IoBridge.java:224) 
02-04 00:56:51.905: W/System.err(971): at libcore.io.IoBridge.connectErrno(IoBridge.java:161) 
02-04 00:56:51.905: W/System.err(971): at libcore.io.IoBridge.connect(IoBridge.java:112) 
02-04 00:56:51.905: W/System.err(971): at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:192) 
02-04 00:56:51.905: W/System.err(971): at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:459) 
02-04 00:56:51.905: W/System.err(971): at java.net.Socket.connect(Socket.java:842) 
02-04 00:56:51.905: W/System.err(971): at libcore.net.http.HttpConnection.<init>(HttpConnection.java:76) 
02-04 00:56:51.905: W/System.err(971): at libcore.net.http.HttpConnection.<init>(HttpConnection.java:50) 
02-04 00:56:51.905: W/System.err(971): at libcore.net.http.HttpConnection$Address.connect(HttpConnection.java:341) 
02-04 00:56:51.905: W/System.err(971): at libcore.net.http.HttpConnectionPool.get(HttpConnectionPool.java:87) 
02-04 00:56:51.905: W/System.err(971): at libcore.net.http.HttpConnection.connect(HttpConnection.java:128) 
02-04 00:56:51.905: W/System.err(971): at libcore.net.http.HttpEngine.openSocketConnection(HttpEngine.java:315) 
02-04 00:56:51.905: W/System.err(971): at libcore.net.http.HttpEngine.connect(HttpEngine.java:310) 
02-04 00:56:51.905: W/System.err(971): at libcore.net.http.HttpEngine.sendSocketRequest(HttpEngine.java:289) 
02-04 00:56:51.905: W/System.err(971): at libcore.net.http.HttpEngine.sendRequest(HttpEngine.java:239) 
02-04 00:56:51.905: W/System.err(971): at libcore.net.http.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:273) 
02-04 00:56:51.905: W/System.err(971): at libcore.net.http.HttpURLConnectionImpl.getInputStream(HttpURLConnectionImpl.java:168) 
02-04 00:56:51.905: W/System.err(971): at io.socket.IOConnection.handshake(IOConnection.java:313) 
02-04 00:56:51.909: W/System.err(971): ... 2 more 
02-04 00:56:51.909: W/System.err(971): Caused by: libcore.io.ErrnoException: isConnected failed: ECONNREFUSED (Connection refused) 
02-04 00:56:51.909: W/System.err(971): at libcore.io.IoBridge.isConnected(IoBridge.java:208) 
02-04 00:56:51.909: W/System.err(971): ... 19 more 
02-04 00:56:51.909: I/io.socket(971): Cleanup 
02-04 00:56:51.969: D/libEGL(971): loaded /system/lib/egl/libEGL_emulation.so 
02-04 00:56:52.021: D/(971): HostConnection::get() New Host Connection established 0xb8a83f48, tid 971 
02-04 00:56:52.025: D/libEGL(971): loaded /system/lib/egl/libGLESv1_CM_emulation.so 
02-04 00:56:52.029: D/libEGL(971): loaded /system/lib/egl/libGLESv2_emulation.so 
02-04 00:56:52.101: W/EGL_emulation(971): eglSurfaceAttrib not implemented 
02-04 00:56:52.121: D/OpenGLRenderer(971): Enabling debug mode 0 
02-04 00:56:52.181: D/OpenGLRenderer(971): TextureCache::get: create texture(0xb8a3c8e8): name, size, mSize = 1, 1048576, 1048576 
02-04 00:56:52.557: D/OpenGLRenderer(971): TextureCache::get: create texture(0xb8a53d18): name, size, mSize = 2, 5184, 1053760 
02-04 00:56:52.653: D/OpenGLRenderer(971): TextureCache::get: create texture(0xb8a3a470): name, size, mSize = 4, 20736, 1074496 
02-04 00:56:52.665: D/OpenGLRenderer(971): TextureCache::get: create texture(0xb8a37848): name, size, mSize = 6, 2304, 1076800 

Answer 1

Вы не можете подключиться из эмулятора к локальной машине непосредственно с помощью localhost или 127.0.0.1 - вы должны использовать специальный адрес.

Адрес для подключения к серверу, запущенному на вашем локальном компьютере (из эмулятора), составляет 10.0.2.2, as described in the developer documentation.