On Aug 8 02:39, Biswapriyo Nath wrote: > I've tried to use poll() with a Windows socket (from WSASocket) and a > cygwin side file descriptor (fd). But it is only signaled for fd only. > > At first, I have seen that fhandler_socket_wsock::set_socket_handle() casts > SOCKET to int. So, is it possible to use poll() with the SOCKET type? Or Is > there any magic to convert Windows socket to cygwin fd and vice-versa? No, you can't do that. The Cygwin poll call requires a Cygwin socket, otherwise all the bookkeeping stuff fails. Corinna -- Corinna Vinschen Cygwin Maintainer