Hello all, I am experiencing the same problem as described here with apache2 version 2.4.38-3+deb10u3 (buster) and also version 2.4.43-1~bpo10+1 (buster-backports).
The proxy modules are loaded but I cannot proxy WebSocket with Apache2. Here's some more information: "apache2ctl -M | grep proxy" gives me: proxy_module (shared) proxy_http_module (shared) proxy_wstunnel_module (shared) I'm trying to proxy WebSocket of Prosody XMPP Server like described here: https://prosody.im/doc/websocket This is in my vHost config: <IfModule mod_proxy.c> <IfModule mod_proxy_wstunnel.c> ProxyTimeout 900 <Location "/xmpp-websocket"> ProxyPreserveHost On ProxyPass "ws://localhost:5280/xmpp-websocket" </Location> </IfModule> </IfModule> It does not matter if I try to proxy "ws" or "wss". The error message is the following: [Wed Jul 22 23:19:46.651199 2020] [proxy:warn] [pid 13332:tid 139973210351360] [client xxx] AH01144: No protocol handler was valid for the URL /xmpp-websocket (scheme 'wss'). If you are using a DSO version of mod_proxy, make sure the proxy submodules are included in the configuration using LoadModule. [Wed Jul 22 23:37:54.853492 2020] [proxy:warn] [pid 8816:tid 140146156889856] [client xxx] AH01144: No protocol handler was valid for the URL /xmpp-websocket (scheme 'wss'). If you are using a DSO version of mod_proxy, make sure the proxy submodules are included in the configuration using LoadModule. Is this a bug or some configuration thing? I doublechecked everything and I think it is a bug. Looking forward for help. Thank you and regards, Martin
