Dear team 
     I have  httpd 2.2.15  on Centos 6 . I need to install mod_proxy_wstunnel . mod_proxy_wstunnel has been provided in apache 2.4.5 .
Is there any official document to back port the mod_proxy_wstunnel to httpd 2.2.15 Centos code . 

Thanks and regards
Akshar