movecmd_t	movecmd;


input from 

packet sender
	wake up on alarms or input signal
	if on input signal, set skipnextalrm
	else
		if skipnextalarm
			skipnextalarm = false;
			continue;
	lock packet
	get current movecmd
	send message
	unlock packet

packet receiver
	wake up only on packet arrival
	identify the packet source
	calculate exact latency
	save the packet off




	// cause timer messages to be issued
	SetTimer (mainwindow, 1, 50, NULL);

	// cause packet received messages to be issued
	WSAAsyncSelect ( net_socket, mainwindow, WM_USER, FD_READ );	

	if (!GetMessage (&msg, NULL, 0, 0))
	{
		TranslateMessage (&msg);
		DispatchMessage (&msg);
		while (PeekMessage (&msg, NULL, 0, 0, PM_NOREMOVE))
		{
			if (!GetMessage (&msg, NULL, 0, 0))
				break;
			TranslateMessage (&msg);
   			DispatchMessage (&msg);
		}
		PrepareToBlock ();
	}