Using recvmsg() with non-unicast datagram (UDP) socket: inconsistent results

Lavrentiev, Anton (NIH/NLM/NCBI) [C]
Wed Aug 1 18:45:00 GMT 2012

> I applied a patch which should fix this problem.  It always uses
> WSARecvMsg now, if called from recvmsg, still provided it is possible,
> of course (No SOCK_STREAM, no AF_LOCAL).
> I'm just generating a new developer snapshot.  Please give the today's
> snapshot from a try.  Should be up in
> about
> half an hour.

The patched DLL now returns consistent msg_flags regardless of whether
or not the control message has been requested.  Thanks!

Could I ask for another favor that since the native WSA msg_flags get
propagated to the CYGWIN environment, the definitions for the additional
flag bits, MSG_MCAST and MSG_BCAST (as defined by WSA) to be added to
<cygwin/socket.h> please?

Anton Lavrentiev
Contractor NIH/NLM/NCBI

More information about the Cygwin mailing list