What about modifying daemon/pusher.c around line 579 to have a timeout
of a value less than cosignnettimeout (say 50% or 80% of
cosignnettimeout) on the pipe read snet_getline( csn, NULL ))?
If a timeout occurs then send a NOOP to the other end to keep the
connection alive and loop to read again.
I'm new to the cosign codebase. Is their anyway to determine if the
snet_getline returns as a result of a timeout or is a select required to
do that?
Comments??
On 12/3/2008 11:14 AM, Paul M Fleming wrote:
> I think I've found several issues with 2.1.0rc2
>
> Environment:
> RedHat Enterprise 4 Update 7
> gcc version 3.4.6 20060404 (Red Hat 3.4.6-9)
>
> Build Problems:
> * GCC doesn't like the -R linking option removing
> -R$ac_cv_path_mysql/lib/mysql from aclocal.m4 makes gcc happy.
>
> The cleanup of junk files while building the apache2 filter (during a
> make everything) causes cgi/logout to be rebuilt on 'make install' --
> which fails because the cleanup also removes the libsnet libraries. IMHO
> the following lines in filters/apache2/Makefile.in
>
> rm -rf ${APXS2JUNKDIRS}
> rm -f ${APXS2JUNKFILES
>
> really belong in the clean target not the target for the DSO.
>
> Replication Problems:
> The other problem is more of a design issue with replication. We're just
> starting to deploy cosign so our transaction rate is rather low. The
> problem is if no REGISTER or LOGIN is received before the
> cosignnettimeout expires the daemon side (target of the replication -
> not source) of the pusher process quits. The results in a 'CHILD XXX
> transient failure' message because the socket read returns EOF - no
> other error is logged BTW. The next login/check request fails to
> propagate to the replica, resulting in user errors (user doesn't appear
> to be logged in even though they are) if a CHECK is done against the
> replica that didn't get the LOGIN/REGISTER due to a timeout.
>
> Should the daemon side of pusher have a different timeout? Or is
> increasing the cosignnettimeout safe?
>
> Thanks
>
> Paul
>
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