In my h2 test suite, I get on the 2.4.x branch a no longer working propxy setup.
[Wed Feb 14 17:11:35.996712 2018] [proxy:warn] [pid 69638:tid 123145425334272]
[client 127.0.0.1:50616] AH01144: No protocol handler was valid for the URL
/proxy/index.html (scheme 'balancer'). If you are using a DSO version of
mod_proxy, make sure the proxy submodules are included in the configuration
Same setup works flawlessly on trunk.
config basically is
BalancerMember "http://127.0.0.1:12345" hcmethod=GET hcuri=/
ProxyPass "/proxy" "balancer://http-local"
ProxyPassReverse "/proxy" "balancer://http-local"
Compiled clean several times already. Did we miss something on the backport?