internal void Stop()
{
if (Winsock.WSAWaitForMultipleEvents(1, new IntPtr[] { _stop }, 1 /*true*/, 0, 0 /*false*/) == Winsock.WSA_WAIT_EVENT_0)
{
Trace.WriteLine("[RCS] Second call to Stop().");
return;
}
Winsock.WSASetEvent(_stop);
Trace.WriteLine("[RCS] Stop event has been fired.");
try
{
Trace.WriteLine("[RCS] Waiting for server thread...");
if (!Application.MessageLoop)
{
_mainThread.Join();
}
else
{
while (_mainThread.IsAlive && !_mainThread.Join(100))
{
Application.DoEvents();
}
}
Trace.WriteLine("[RCS] Server thread has finished.");
}
catch (Exception ex)
{
Trace.WriteLine("[RCS] Server thread waiting exception: " + ex.Message);
}
finally
{
_mainThread = null;
}
Winsock.WSACloseEvent(_stop);
}
private void Listener()
{
IntPtr socketEvent = Winsock.WSACreateEvent();
IntPtr[] allEvents = { _stop, socketEvent };
IntPtr handle = _listenSocket.Handle;
Winsock.WSAEventSelect(handle, socketEvent, Winsock.FD_ACCEPT);
while (true)
{
try
{
uint res = Winsock.WSAWaitForMultipleEvents(2, allEvents, 0 /*false*/, Winsock.WSA_INFINITE, 1 /*true*/);
if (res == Winsock.WSA_WAIT_EVENT_0)
{
Trace.WriteLine("[RCS] Event 0 (STOP) signalled");
break;
}
else if (res == Winsock.WSA_WAIT_EVENT_0 + 1)
{
Winsock.WSAResetEvent(socketEvent);
Trace.WriteLine("[RCS] Event 1 (ACCEPT) signalled");
Socket cs = _listenSocket.Accept();
Winsock.WSAEventSelect(cs.Handle, socketEvent, 0);
cs.Blocking = true;
Trace.WriteLine("[RCS] Client accepted at socket " + cs.Handle.ToString());
ThreadPool.QueueUserWorkItem(_onAccept, cs);
}
else
{
Trace.WriteLine("[RCS] Event " + res.ToString() + " (?) signalled");
}
}
catch (Exception ex)
{
Trace.WriteLine("[RCS] Accept exception: " + ex.Message);
// If not sopped: sleep and try again
if (Winsock.WSAWaitForMultipleEvents(1, new IntPtr[] { _stop }, 1 /*true*/, 0, 0 /*false*/) != Winsock.WSA_WAIT_EVENT_0)
{
Trace.WriteLine("[RCS] It is not stop!");
Thread.Sleep(100);
}
else
{
Trace.WriteLine("[RCS] It is stop, exiting.");
// Stopped: exit
break;
}
}
}
try
{
Trace.WriteLine("[RCS] Closing main socket " + handle.ToString() + " ...");
_listenSocket.Close();
Trace.WriteLine("[RCS] Main socket " + handle.ToString() + " closed.");
}
catch (Exception ex)
{
Trace.WriteLine("[RCS] Main socket closing exception: " + ex.Message);
}
finally
{
_listenSocket = null;
}
Winsock.WSACloseEvent(socketEvent);
}