From 989647434654f341c8edfe41e767b955ae1da077 Mon Sep 17 00:00:00 2001
From: Ricardo Carrillo Cruz <ricardo.carrillo.cruz@gmail.com>
Date: Wed, 11 Feb 2015 12:31:07 +0000
Subject: [PATCH] Add support for Apache mod_proxy_wstunnel

This change allows Apache servers with mod_proxy_wstunnel enabled
to pass thru Websocket connections to Etherpad, providing the
browser supports that.

Change-Id: I4f595f456e0d280c6f05958a36552213dd6cf1e2
---
 templates/etherpadlite.vhost.erb | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/templates/etherpadlite.vhost.erb b/templates/etherpadlite.vhost.erb
index e6711bb..c0b1888 100644
--- a/templates/etherpadlite.vhost.erb
+++ b/templates/etherpadlite.vhost.erb
@@ -66,6 +66,14 @@
       RewriteCond %{REQUEST_URI} !/robots.txt
       RewriteRule ^/+(.+)$ https://<%= scope.lookupvar("etherpad_lite::apache::vhost_name") %>/p/$1 [NC,L,R=301]
 
+      <IfModule mod_proxy_wstunnel.c>
+          RewriteCond %{REQUEST_URI}  ^/socket.io            [NC]
+          RewriteCond %{QUERY_STRING} transport=websocket    [NC]
+          RewriteRule /(.*)           ws://localhost:9001/$1 [P,L]
+          ProxyPass        /socket.io http://localhost:9001
+          ProxyPassReverse /socket.io http://localhost:9001
+      </IfModule>
+
       RewriteRule ^/(.*)$ http://localhost:9001/$1 [P]
       ProxyPassReverse / http://localhost:9001/
   </IfModule>