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Date: Tue, 29 Mar 2005 10:36:04 -0600
From: Brian Ford <ford AT vss DOT fsi DOT com>
Reply-To: cygwin AT cygwin DOT com
To: Peter Stephens <ptfoof AT sbcglobal DOT net>
cc: cygwin AT cygwin DOT com
Subject: RE: recv and errno during a connection reset/closed by peer
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On Mon, 28 Mar 2005, Peter Stephens wrote:

> Brian
>
> Are you saying that there is no way to distinguish a dropped connection from
> a MSG_PEEK with no data to retrieve?

AFAIK, yes.  Why are you using this MSG_PEEK method?

Why not just do a poll and look for POLLHUP
(http://www.opengroup.org/onlinepubs/009695399/functions/poll.html):

POLLHUP
    The device has been disconnected. This event and POLLOUT are
mutually-exclusive; a stream can never be writable if a hangup has
occurred. However, this event and POLLIN, POLLRDNORM, POLLRDBAND, or
POLLPRI are not mutually-exclusive. This flag is only valid in the revents
bitmask; it shall be ignored in the events member.

and http://cygwin.com/acronyms/#PCYMTNQREAIYR ;-).

-- 
Brian Ford
Senior Realtime Software Engineer
VITAL - Visual Simulation Systems
FlightSafety International
the best safety device in any aircraft is a well-trained pilot...

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