non-blocking accept() can hang.

Tanaka Akira
Tue Feb 19 22:16:00 GMT 2013

2013/2/19 Corinna Vinschen
> I debugged your example code, and it can't work on Cygwin.  The problem
> is that accept/connect on AF_LOCAL sockets performs a handshake
> operation to make sure that the other side of the socket is a Cygwin
> process as well, and to propagate credential information between
> client and listener.  The way it's implemented right now requires that
> both sides of the socket are responsive.  That's a safe thing for the
> accept call here, but since there's neither a blocking connect, nor a
> select or poll call waiting on the connecting side of the socket, nothing
> goes forward.
> To get this code working, you have to use either AF_INET or AF_INET6
> sockets, or you have to start a thread calling select or poll, so
> there's an active function call which allows to perform the handshake
> from the connecting side.

Thank you for the information.
I'll use threads.
Tanaka Akira

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