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From Jim Jagielski <>
Subject ping for http in mod_proxy
Date Wed, 13 Feb 2008 16:07:28 GMT
I've started looking at adding "ping" support for
mod_proxy_http to complement whats in mod_proxy_ajp...
The idea is to send a simple OPTIONS * to the backend
and hope for a reply.

The rub is that I've been working on 2 separate
implementations: one talks direct to the socket and the
other basically tries to do what ap_proxy_http_request()
and ap_proxy_http_process_response() does, as far
as using brigades, etc... The former is much further
along, btw.

In any case, both implementations can have what I can
envision as some "weird effects" as far as how they
should actually work in the real world. For example,
should it honor force-proxy-request-1.0 and/or
proxy-nokeepalive, and, if so, how does that affect
the subsequent "real" request... In other words,
it's not as clean as AJP which has a "real" ping.
And all this is wondering whether or not it's
really useful in the 1st place...

So before I go any further, any comments or ideas
on whether is is even a Good Idea or not... I'm starting
to have 2nd thoughts :)

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