BeginReceive in a separate thread

For some reason, I need to do BeginReceive on a separate thread, much like this example :

    public void WaitForData()
    {
        Thread t = new Thread(WaitForDataThread);
        t.Start();
    }

    public void WaitForDataThread()
    {
        try
        {
            CSocketPacket theSocPkt = new CSocketPacket();
            theSocPkt.thisSocket = m_socClient;
            m_asynResult = m_socClient.BeginReceive(theSocPkt.dataBuffer, 0, theSocPkt.dataBuffer.Length, SocketFlags.None, OnDataReceived, theSocPkt);
        }
        catch (SocketException se)
        {
            MessageBox.Show(se.Message);
        }
    }

But I've always received error right after the BeginReceive call, the OnDataReceived is instantly raised, in that event it will call the EndReceive method, and this error is always thrown : "The I/O operation has been aborted because of either a thread exit or an application request".

But if I remove the separate-thread part (like directly call the WaitForDataThread(), without going through the WaitForData() method), everything works fine.

If you are wondering why would I need to create a separate thread, it is because I need to call the BeginReceive during an event that will be generated from a different thread from a different class. This is pretty much the same like creating a new thread like the sample above, and I need to make it work.

Is there a way that I can 开发者_JAVA技巧do this??

Found the answer on msdn (documentation of Socket.EndReceive):

All I/O initiated by a given thread is canceled when that thread exits. A pending asynchronous operation can fail if the thread exits before the operation completes.

You have to make sure, that your thread where you start your socket-operation does not exit until you are done with your socket I/O.

A workaround is to use a threadpool thread, as described here.

I assume your main thread doesn't wait till the data comes, and simply exits after spawning the other thread. Finishing the main thread kills the whole application, so your WaitForData-thread dies, too.

You have to do the following:

1. Start the WaitForData-thread
2. Do whatever you want in Main thread
3. Wait until the WaitForData-thread finishes in Main thread (Thread.Join?)
4. Then exit.