Configuring Apache v2.2.x as a reverse proxy to NodeBB

Prerequisites: * build-essential * automake * libtool * You can install these packages via apt

You need to manually compile and add the module mod_proxy_wstunnel to the Apache 2.2 branch. If you're running Ubuntu (prior to 14.04) or Debian, you're likely on the 2.2 branch of code.

Please use this guide to backport the mod_proxy_wstunnel module into the 2.2 code base of Apache

*Note: On ubuntu, if you’re missing the ./configure file, you need to first run ./buildconf. After this is complete, you will then be able to use ./configure.