AndroidAsync网络套接字不工作

Question

我使用koush的这个AndroidSync库来创建websocket（服务器/客户端）并在两个android设备之间传输数据。这两个设备通过wifi连接（一个是wifi AP，另一个连接到它）。发送请求4-5秒后，我在客户端设备中收到TimeoutException。这就是我到目前为止所做的。。

ServerActivity.java

 protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_server);
    mSockets = new ArrayList<WebSocket>();
    mAsyncHttpServer = new AsyncHttpServer();
    mWebSocketCallback = new AsyncHttpServer.WebSocketRequestCallback() {
        @Override
        public void onConnected(final WebSocket webSocket, RequestHeaders headers) {
            mSockets.add(webSocket);
            webSocket.send("Welcome Client");
            webSocket.setClosedCallback(new CompletedCallback() {
                @Override
                public void onCompleted(Exception ex) {
                    try {
                        if (ex != null)
                            Log.e("WebSocket", "Error");
                    } finally {
                        mSockets.remove(webSocket);
                    }
                }
            });
            webSocket.setStringCallback(new WebSocket.StringCallback() {
                @Override
                public void onStringAvailable(String s) {
                    Log.d("SERVERTAG",s);
                    Toast.makeText(getApplicationContext(),s,Toast.LENGTH_SHORT).show();
                }
            });
        }
    };
    mAsyncHttpServer.websocket("/",mWebSocketCallback);
    mAsyncHttpServer.listen(Utils.PORT_NUMBER);
    Button sendButton = (Button) findViewById(R.id.sendButtonS);
    sendButton.setOnClickListener(new View.OnClickListener(){
        @Override
        public void onClick(View view) {
            for(WebSocket socket : mSockets) {
                socket.send("Server sent a string");
            }
        }
    });
}

ClientActivity.java

protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_client);
    mWifiManager = (WifiManager) getSystemService(Context.WIFI_SERVICE);
    //Resolve IP address
    int ipAddress = mWifiManager.getConnectionInfo().getIpAddress();
    String hostAddress = Formatter.formatIpAddress(ipAddress);
    hostAddress = "http://" + hostAddress + ":" +Utils.PORT_NUMBER;
    Log.d("CLIENTTAG", "address is " + hostAddress);
    mWebSocketConnectCallback = new AsyncHttpClient.WebSocketConnectCallback() {
        @Override
        public void onCompleted(Exception ex, WebSocket webSocket) {
            if (ex != null) {
                ex.printStackTrace();
                return;
            }
            webSocket.send("Hello Server");
            webSocket.setStringCallback(new WebSocket.StringCallback() {
                @Override
                public void onStringAvailable(String s) {
                    Log.d("CLIENTTAG",s);
                    Toast.makeText(getApplicationContext(), s, Toast.LENGTH_SHORT).show();
                }
            });
        }
    };
    mAsyncHttpClient = AsyncHttpClient.getDefaultInstance();
    mAsyncHttpClient.websocket(hostAddress, null, mWebSocketConnectCallback);
}

这是我在客户端设备的logcat中得到的。

10-21 19:50:49.289      742-945/com.haloappstudio.musichub W/System.err﹕ java.util.concurrent.TimeoutException
10-21 19:50:49.289      742-945/com.haloappstudio.musichub W/System.err﹕ at com.koushikdutta.async.http.AsyncHttpClient$2.run(AsyncHttpClient.java:240)
10-21 19:50:49.289      742-945/com.haloappstudio.musichub W/System.err﹕ at com.koushikdutta.async.AsyncServer.lockAndRunQueue(AsyncServer.java:683)
10-21 19:50:49.289      742-945/com.haloappstudio.musichub W/System.err﹕ at com.koushikdutta.async.AsyncServer.runLoop(AsyncServer.java:700)
10-21 19:50:49.289      742-945/com.haloappstudio.musichub W/System.err﹕ at com.koushikdutta.async.AsyncServer.run(AsyncServer.java:608)
10-21 19:50:49.289      742-945/com.haloappstudio.musichub W/System.err﹕ at com.koushikdutta.async.AsyncServer.access$700(AsyncServer.java:37)
10-21 19:50:49.289      742-945/com.haloappstudio.musichub W/System.err﹕ at com.koushikdutta.async.AsyncServer$13.run(AsyncServer.java:557)

我以前没有真正做过套接字编程。有人能帮我吗？

感谢您的帮助。

Answer 1

我发现了问题，因为@jrandaz说问题出在服务器的IP地址上。

结果是

WifiManager.getConnectionInfo().getIpAddress()

返回设备自己的IP地址，而不是连接到的wifi热点设备的地址。我使用了192.168.43.1，这是android中wifi热点的默认IP地址，它起作用了。

Answer 2

在客户端，您是否尝试过在null所在的位置传递http？

mAsyncHttpClient.websocket(hostAddress, null, mWebSocketConnectCallback);

也许试试

mAsyncHttpClient.websocket(hostAddress, http, mWebSocketConnectCallback);

此外，当你提到你的两个设备都连接到Wifi时，你所说的第二个设备是什么意思是"连接到它"。（我会通过评论澄清这一点，但没有足够的分数）在连接到演示服务器时，您可能没有收到正确的IP地址。