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+++ This bug was initially created as a clone of Bug #1224763 +++

Description of problem:
When using mod_proxy with php-fpm and, httpd use port 8000 instead of 9000 as default for fcgi protocol.
This is hardcoded in: httpd-2.4.12/modules/proxy/proxy_util.c

Version-Release number of selected component (if applicable):
httpd-2.4.6-31.el7

How reproducible:
always

Steps to Reproduce:
1. use linked test, but remove all port definition from configuration (fpm.conf)

Actual results:
http code 503

Expected results:
http code 200

Additional info:

error_log:
[Mon May 25 12:05:07.665370 2015] [proxy:error] [pid 15945] (111)Connection refused: AH00957: FCGI: attempt to connect to 127.0.0.1:8000 (127.0.0.1) failed
[Mon May 25 12:05:07.665394 2015] [proxy:error] [pid 15945] AH00959: ap_proxy_connect_backend disabling worker for (127.0.0.1) for 60s

There is no standard port for FCGI. It is true that the php-fpm (which is deployed quite often) uses port 9000, so we could use this port as default, but there is nothing like "default fcgi port". We will try to bring this discussion upstream and change the default to match php-fpm in upstream, but it's not something we would like to do in 7.2 without upstream right now. Moving to 7.3

Upstream still use port 8000 as the default port mapping for fcgi://.  Changing
the implicit default is potentially a backwards compat break so we'd need very
good motivation to change it in RHSCL.

Plus both 8000 and 9000 are IETF reserved ports... unlikely we'll patch
anything in here.