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From: | "Peter Stephens" <ptfoof AT sbcglobal DOT net> |
To: | <cygwin AT cygwin DOT com> |
Subject: | RE: recv and errno during a connection reset/closed by peer |
Date: | Mon, 28 Mar 2005 18:17:41 -0500 |
Message-ID: | <!~!UENERkVCMDkAAQACAAAAAAAAAAAAAAAAABgAAAAAAAAAUKQItienSEKG+9226yKd5cKAAAAQAAAADZbnjoLqKEeI3+lfe/tpAgEAAAAA@sbcglobal.net> |
MIME-Version: | 1.0 |
In-Reply-To: | <Pine.CYG.4.58.0503281033060.3768@fordpc.vss.fsi.com> |
Brian Are you saying that there is no way to distinguish a dropped connection from a MSG_PEEK with no data to retrieve? Pete P.S. I use this standard: http://www.unix.org/unix03.html . Is this incorrect? Peter A. Stephens ptfoof AT sbcglobal DOT net -----Original Message----- From: Brian Ford [mailto:ford AT vss DOT fsi DOT com] Sent: Monday, March 28, 2005 11:37 AM To: Peter Stephens Cc: cygwin AT cygwin DOT com Subject: RE: recv and errno during a connection reset/closed by peer On Fri, 25 Mar 2005, Peter Stephens wrote: > I boiled this down to nothing(see below). I must be missing something > basic. Yup. > I tried the suggestions made so far and it never gets to: > > printf(" >>> ERRNO %i\n", errno); > > I would expect that on a disconnect (I use putty in telnet or raw > mode) it would return -1 whether it is doing MSG_PEEK or an actual > retrieval. No luck. Nope (http://www.opengroup.org/onlinepubs/7990989775/xns/recv.html): "If no messages are available to be received and the peer has performed an orderly shutdown, recv() returns 0." I think that's what you're missing. -- Brian Ford Senior Realtime Software Engineer VITAL - Visual Simulation Systems FlightSafety International the best safety device in any aircraft is a well-trained pilot... -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/
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