Argonne National Laboratory

Experimental Physics and
Industrial Control System

1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  2013  <20142015  2016  2017  2018  2019  Index 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  2013  <20142015  2016  2017  2018  2019 
<== Date ==> <== Thread ==>

Subject: Re: TCP connection status : drvAsynIPPort
From: Eric Norum <wenorum@lbl.gov>
To: Patel Jignesh <Jignesh.Patel@iter.org>
Cc: "tech-talk@aps.anl.gov" <tech-talk@aps.anl.gov>
Date: Wed, 15 Oct 2014 08:42:58 -0700
That is correct.  In the absence of SO_KEEPALIVE there is no network traffic from a silent client, which makes it impossible to distinguish from a crashed, shut down, or otherwise disabled or disconnected client.

On Oct 15, 2014, at 8:15 AM, Patel Jignesh <Jignesh.Patel@iter.org> wrote:

2. If we keep the communication in receive mode, the socket is not destroyed by the system..(I have waited for more than 2 hours..!)


-- 
Eric Norum
wenorum@lbl.gov


References:
TCP connection status : drvAsynIPPort Patel Jignesh
RE: TCP connection status : drvAsynIPPort Mark Rivers
RE: TCP connection status : drvAsynIPPort Patel Jignesh
RE: TCP connection status : drvAsynIPPort Mark Rivers
Re: TCP connection status : drvAsynIPPort Torsten Bögershausen
Re: TCP connection status : drvAsynIPPort J. Lewis Muir
RE: TCP connection status : drvAsynIPPort Mark Rivers
RE: TCP connection status : drvAsynIPPort Patel Jignesh

Navigate by Date:
Prev: RE: TCP connection status : drvAsynIPPort Patel Jignesh
Next: RE: TCP connection status : drvAsynIPPort Mark Rivers
Index: 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  2013  <20142015  2016  2017  2018  2019 
Navigate by Thread:
Prev: RE: TCP connection status : drvAsynIPPort Patel Jignesh
Next: RE: TCP connection status : drvAsynIPPort Mark Rivers
Index: 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  2013  <20142015  2016  2017  2018  2019 
ANJ, 17 Dec 2015 Valid HTML 4.01! · Home · News · About · Base · Modules · Extensions · Distributions · Download ·
· Search · EPICS V4 · IRMIS · Talk · Bugs · Documents · Links · Licensing ·