Question

我正在尝试从ServerSocket Object获取Socket实例。但是，它始终打印

SocketTimeoutException = null

有我的代码：

try {
    // We listen for new connections
    Log.d("ShairPort", "Service >> In TRY ");
    try {
        servSock = new ServerSocket(port);
    } catch (IOException e) {
        Log.d("ShairPort", "Service >> In TRY # IO Exception = " +e.getMessage());
        servSock = new ServerSocket();
    }catch(Exception e) {
        Log.d("ShairPort", "Service >> In TRY # E xception = " +e.getMessage());
    }

    // DNS Emitter (Bonjour)
    byte[] hwAddr = getHardwareAdress();
    emitter = new BonjourEmitter(name, getStringHardwareAdress(hwAddr), port);

    //Setting Timeout
    servSock.setSoTimeout(10000);


    Log.d("ShairPort", "Service >> stopThread = " +stopThread);

    while (!stopThread) {
        try {
            //********** This is throwing Exception ***************//
            Socket socket = servSock.accept();
            servSock.setReuseAddress(true);
            Log.d("ShairPort", "Service >> got connection from " + socket.toString());

            new RTSPResponder(hwAddr, socket).start();

        } catch(SocketTimeoutException e) {
            e.printStackTrace();
            Log.d("ShairPort", "Service >> SocketTimeoutException = " + e.getMessage());
           //********* here I am getting exception **************//         

        }catch(Exception e) {
            Log.d("ShairPort", "Service >> Exception = " + e.getMessage());
            servSock.close();
        }
    }
} catch (IOException e) {

    Log.d("ShairPort", "Service >> TRY # CATCH IOException = " + e.getMessage());
    throw new RuntimeException(e);

}

如果我做错了请告诉我，以便我可以解决此问题。

02-06 18:14:08.300: W/System.err(2245): java.net.SocketTimeoutException
02-06 18:14:08.300: W/System.err(2245):     at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:108)
02-06 18:14:08.300: W/System.err(2245):     at java.net.ServerSocket.implAccept(ServerSocket.java:203)
02-06 18:14:08.310: W/System.err(2245):     at java.net.ServerSocket.accept(ServerSocket.java:128)
02-06 18:14:08.310: W/System.err(2245):     at vavi.apps.shairport.LaunchThread.run(LaunchThread.java:99)
02-06 18:14:08.310: W/System.err(2245): Caused by: libcore.io.ErrnoException: accept failed: EAGAIN (Try again)
02-06 18:14:08.320: W/System.err(2245):     at libcore.io.Posix.accept(Native Method)
02-06 18:14:08.320: W/System.err(2245):     at libcore.io.BlockGuardOs.accept(BlockGuardOs.java:55)
02-06 18:14:08.320: W/System.err(2245):     at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:98)
02-06 18:14:08.320: W/System.err(2245):     ... 3 more

Answer 1

您在服务器套接字上设置了10秒超时。

如果在十秒内没有连接到达，accept()方法将抛出SocketTimeoutException。

如果您不想要这种行为，请不要设置超时或提高超时。

我不知道为什么你在自己设置时超时会感到惊讶。

NB绑定后在服务器套接字上调用setReuseAddress()是完全没有意义的，更不用说每次接受新连接时都是如此。

ServerSocket.accept（）抛出带有空消息的SocketTimeoutException

1 个答案: