rsync - May 2008 - rsync error: timeout in data send/receive (code 30) at /home/lapo/packaging/tmp/rsync-2.6.3/io.c(153)

We are rsync'ing from an xp box running cygwin to a redhat box, using a Perl
script that fist calls for an ssh tunnel, then calls rsync through local
host.

ssh -P -f -L 8740:remote.host.ip:873 user@firewall.ip -p 22 sleep 25

rsync -vrtz -v --timeout=180 --exclude-from=exludefiles
rsync://localhost:8740/<remote path>   <target path>
=========================================================This has worked for
quite a while on a daily cron job.  We can still open
the ssh tunnel without any problem.  After the tunnel is open and we run
rsync, we get the following error messages:

rsync error: timeout in data send/receive (code 30) at
/home/lapo/packaging/tmp/rsync-2.6.3/io.c(153)
rsync: connection unexpectedly closed (598306 bytes read so far)
rsync error: error in rsync protocol data stream (code 12) at io.c(165)
rsync: connection unexpectedly closed (598306 bytes read so far)
rsync error: error in rsync protocol data stream (code 12) at io.c(165)
=========================================================Then it returns to the
command prompt.  The number of 'bytes read so far' is
not constant on the different times we've tried rsync'ing, but this
number
does stay around 590kB.

Does anybody have any ideas?
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As an update to this problem, it seems that rsync has no problem
updating/transferring the directory tree (every day, new data is added in a
date directory structure at the remote site).  So when I rsync, I get the
new folders, but the error message always pops up before data files are
transferred over.
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On Thu, May 08, 2008 at 08:59:41AM -0700, arguellodw
wrote:
> rsync error: timeout in data send/receive (code 30) at
> /home/lapo/packaging/tmp/rsync-2.6.3/io.c(153)
You are reaching your idle-time timeout.  Either make it larger (e.g.
--timeout=360) or upgrade to a newer rsync version that has support for
keep-alive messages in the protocol and see if that helps.

..wayne..