Apache 2.4 websocket configuration

Apache 2.4 has support for websocket using proxy configuration using module mod_proxy_wstunnel.so
LoadModule proxy_wstunnel_module modules/mod_proxy_wstunnel.so

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LoadModule proxy_module modules/mod_proxy.so

LoadModule proxy_http_module modules/mod_proxy_http.so

LoadModule proxy_wstunnel_module modules/mod_proxy_wstunnel.so

backend.server.com is backend server name

Configure proxy and passpass rules 

ProxyPass        /    ws://backend.server.com:8080/

ProxyPassReverse /    ws://backend.server.com:8080/

ProxyPass        /    wss://backend.server.com:8080/

ProxyPassReverse /    wss://backend.server.com:8080/

ProxyPass        /  http://backend.server.com:8080/

ProxyPassReverse /  http://backend.server.com:8080/

Order of this module is imported.

If modules are loaded sucessfully.  following lines are seen in Apache httpd trace log server

 [proxy:debug] [pid :tid 4] proxy_util.c(1777): AH00925: initializing worker ws://backend.server.com:8080/ shared

 [proxy:debug] [pid :tid 4] proxy_util.c(1819): AH00927: initializing worker ws://backend.server.com:8080/ local

 [proxy:debug] [pid :tid 4] proxy_util.c(1853): AH00930: initialized pool in child 916 for (backend.server.com) min=0 max=64 smax=64

 [proxy:debug] [pid :tid 4] proxy_util.c(1777): AH00925: initializing worker wss://backend.server.com:8080/ shared

 [proxy:debug] [pid :tid 4] proxy_util.c(1819): AH00927: initializing worker wss://backend.server.com:8080/ local

 [proxy:debug] [pid :tid 4] proxy_util.c(1853): AH00930: initialized pool in child 916 for (backend.server.com) min=0 max=64 smax=64

 [proxy:debug] [pid :tid 4] proxy_util.c(1777): AH00925: initializing worker http://backend.server.com:8080/ shared

 [proxy:debug] [pid :tid 4] proxy_util.c(1819): AH00927: initializing worker http://backend.server.com:8080/ local

 [proxy:debug] [pid :tid 4] proxy_util.c(1853): AH00930: initialized pool in child 916 for (backend.server.com) min=0 max=64 smax=64

 [proxy:debug] [pid :tid 4] proxy_util.c(1777): AH00925: initializing worker proxy:reverse shared

 [proxy:debug] [pid :tid 4] proxy_util.c(1819): AH00927: initializing worker proxy:reverse local