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Date:	Mon, 9 Mar 2009 11:34:18 +0100
From:	Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To:	cygwin AT cygwin DOT com
Subject:	Re: MSG_DONTWAIT on recvfrom
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On Mar  9 10:02, T. Horsnell wrote:
> I'm trying to use recvfrom in non-blocking mode with the MSG_DONTWAIT flag,
> and I get an undefined name for MSG_DONTWAIT at compile time.
> A trawl through the mail archives gave a reference to this in 2001
> which said:
>
> "Download the source for cygwin1.dll and implement MSG_DONTWAIT"
>
> Is this still the case (I have a recent cygwin with cygwin1.dll 1.5.25)
> or is there a more straightforward fix?

MSG_DONTWAIT isn't supported by Winsock and it's not supported by Cygwin
either.  I put this on my TODO list for a later release but keep in mind
that MSG_DONTWAIT is a non-standard socket extension not backed by
POSIX.  Consider to use O_NONBLOCK with the F_SETFL fcntl command
instead.


Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Project Co-Leader          cygwin AT cygwin DOT com
Red Hat

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