X-Recipient: archive-cygwin@delorie.com X-Spam-Check-By: sourceware.org Message-ID: <40a53b430808211503n5f945bco9f618e8905905870@mail.gmail.com> Date: Thu, 21 Aug 2008 18:03:40 -0400 From: "Derek Schrock" To: cygwin@cygwin.com Subject: Re: SSH and reattaching screen In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <40a53b430808200813g47528a6dsef1a88566fe709@mail.gmail.com> X-IsSubscribed: yes Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: 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 alias sshhs='ssh -t domain.com '\''screen -DRR session || screen -S session bash '\''' -DRR seemed to fix the problem I don't like using -DRR because I don't really know what it means "Do whatever it takes." Is it creating some kinda memory leak that -Dr wasn't? We'll see how long DRR works On Thu, Aug 21, 2008 at 4:11 PM, Andrew Schulman wrote: >> Is there a known problem with Cygwin's SSH and trying to reattach to >> screen sessions? This seems to be a random occurrence but while >> trying to reattach to a screen session screen will hang indefinitely. >> I'm using ssh on a Mac OS X 10.5.4 system to ssh into a Windows 2003 >> Cygwin installation. Using a bash alias ( alias sshhs='ssh -t >> domain.com '\''screen -xDr session || screen -S session bash '\''' ) >> to connect and try to reattach to a session named session and if that >> fails create a new screen session called session. I've seen this hang >> occur from accedently closing a Terminal window to telling ssh to >> close connection ( etner ~ . ). It is not a timed based problem >> because I've let sessions sit for days that I could reattach to and >> sessions that were disconnected for a second that would hang. Also >> something to take note, options like -list or -wipe will also hang >> screen. So for instance if screen is hanging I can ssh in normally >> and try to do screen -list or screen -wipe and that screen will hang. >> The solution to the problem currently is to ssh or Remote Desktop into >> the machine and kill the hanging screen PID. Is there something >> fundmently wrong that I'm doing with ssh or screen that's causing this >> in Cygwin? Thanks. > > Hi Derek. I haven't heard of this particular problem before, where the reattach > hangs. In the past screen had frequent problems reattaching in Cygwin, but in > all the cases I'm aware of the session was unreachable, i.e. it was listed but > the socket was dead so screen wouldn't let you reattach at all. > > The reattachment problems are mostly solved in the current version of screen in > Cygwin AFAIK. I use it every day and I have only occasional problems > reattaching-- not frequent and nothing I've ever been able to pin down. However, > I'm using a console window, not logging in via ssh. Not sure how much > difference that makes. > > Last year IIRC, one person reported that he couldn't reattach, and he was also > using ssh. In his case, I believe that at least part of the problem had to do > with bad permissions on the socket files, in /tmp/uscreens. > > HTH, > Andrew. > > > -- > 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/ > > -- Derek Schrock -- 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/