Hi,I have a question regarding the impact of backhand server crashes in an Apache 2.0 reverse proxy setup that makes use of mod_rewrite's external mapping program functionality. We did configure the rewrite lock to protect the pipe access and usually everything works just fine.
When the backhand server (the one the reverse proxy sends requests to) is rebooted, though, the pipe synching seems to fail and we start see what you would expect without a lock in place.
Is it possible that mod_proxy's reaction to aborted connections to the backhand server impacts the mutex locking of the pipe to the external program?
We use Apache 2.0 on Solaris 8 and a Perl script as the external mapping program. I am quite confident we got all the potential problems mentioned in the docs right (such as the lock and setting STOUT to binmode in the Perl prog).
Thanks for any hints or comments. JanP.S. I have seen that there have been significant changes in mod_rewrite's pipe reading from Apache 2.0 to 2.2, maybe this already fixes the problems?
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