https://bz.apache.org/bugzilla/show_bug.cgi?id=66300
Bug ID: 66300
Summary: mod_proxy_hcheck does not detect AJP/CPING support
Product: Apache httpd-2
Version: 2.4-HEAD
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P2
Component: mod_proxy_hcheck
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
We were very excited to see mod_proxy_hcheck support for AJP/CPING (r1887415)
land in Ubuntu 22.04; however trying to enable it yields the following error:
BalancerMember Health check method CPING not (yet) implemented
This was surprising for us since from a cursory look at the code this
functionality seems implemented.
A couple of hours of debugging later we concluded that the order of execution
of the code added in r1887415 seems to be incorrect: the code checking for AJP
availability is executed in hc_post_config() which is unfortunately too late
since the configuration syntax has already been marked invalid when the
"hcmethod=CPING" token was found.
To fix this we simply moved the code checking for AJP availability in
hc_pre_config(). We are running a patched version of http-2.4.52 on a couple of
hosts running Ubuntu 22.04 and it seems to be working without issues so far.
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