Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Mail-Followup-To: cygwin@cygwin.com Delivered-To: mailing list cygwin@cygwin.com Date: Wed, 21 Apr 2004 11:50:59 +0200 From: Corinna Vinschen To: cygwin@cygwin.com Subject: Re: write hangs on socket shut down for writing Message-ID: <20040421095059.GG4092@cygbert.vinschen.de> Reply-To: cygwin@cygwin.com Mail-Followup-To: cygwin@cygwin.com References: <20040421011730.GA2072@efn.org> <20040421084659.GD4092@cygbert.vinschen.de> <20040421093620.GA2440@efn.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20040421093620.GA2440@efn.org> User-Agent: Mutt/1.4.2i Note-from-DJ: This may be spam On Apr 21 02:36, Yitzchak Scott-Thoennes wrote: > On Wed, Apr 21, 2004 at 10:46:59AM +0200, Corinna Vinschen wrote: > > Did you try it with a recent Cygwin version? I used your above test > > application and I'm getting a EPIPE (resp. a SIGPIPE) as expected. > > I think I had heard that others were not seeing this failure. I'm > attaching an strace from my test program in case that may be helpful. > Is there anything you can think of that might make a difference? Would you mind to debug that by yourself? You are seeing this problem so I guess you're the best person to debug that problem. Setting a breakpoint to 'fhandler_socket::sendmsg(msghdr const*, int, int)' should be fine. I can't see any reason for Cygwin to do that. There's no loop anywhere which could run endlessly. So either WSASendTo itself hangs, which is pretty unlikely for overlapped sockets, or WSASendTo returns SOCKET_ERROR and WSAGetLastError returns WSA_IO_PENDING so that WSAWaitForMultipleEvents in wsock_event::wait hangs. Any chance that a firewall or anti-virus software is interfering? Corinna -- Corinna Vinschen Please, send mails regarding Cygwin to Cygwin Co-Project Leader mailto:cygwin@cygwin.com Red Hat, Inc. -- 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/