How to set up an apache proxy for Meteor/SockJS and WebSocket?

Question

I have an apache proxy for a meteor app and apache and meteor are on two separate machines. I need it that way as apache has to serve a lot of real websites and it wouldn\'t

Answer 1

This answer is based on Fatih's answer. His solution fails for browsers that send a connection request header other than "Upgrade", such as "keep-alive, Upgrade". This was the case for me with Firefox 42.

To tackle the issue for Firefox also, change the apache RewriteCond as follows:

RewriteEngine on
RewriteCond %{HTTP:UPGRADE} ^WebSocket$ [NC]
RewriteCond %{HTTP:CONNECTION} Upgrade$ [NC]
RewriteRule .* ws://localhost:3000%{REQUEST_URI} [P]

(^Upgrade$ becomes Upgrade$)

I wanted to put this as a comment to Fatih's answer, however I lack the necessary reputation.