add 2.4 examples of mixed http/ws

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1880722 13f79535-47bb-0310-9956-ffa450edef68

diff --git a/docs/manual/mod/mod_proxy_wstunnel.xml b/docs/manual/mod/mod_proxy_wstunnel.xml
index 4d46e5bf8b75ee810d0e23ecdfc3af77190ad93b..e36eb3289045d40fae48c6c5a033e15bd13d96e2 100644 (file)
--- a/docs/manual/mod/mod_proxy_wstunnel.xml
+++ b/docs/manual/mod/mod_proxy_wstunnel.xml
@@ -50,6 +50,28 @@ ProxyPass "/ws2/"  "ws://echo.websocket.org/"
 ProxyPass "/wss2/" "wss://echo.websocket.org/"
     </highlight>
 
+    <p>Proxying both HTTP and websockets at the same time, with a specific set of URL's being
+websocket-only, can be done by specifying the websockets 
+<directive type="ProxyPass" module="mod_proxy">ProxyPass</directive> directive before the
+HTTP directive:</p>
+<highlight language="config">
+ProxyPassMatch ^/(myApp/ws)$  ws://example.com:9080/$1
+ProxyPass / http://example.com:9080/
+</highlight>
+
+<p>Proxying both HTTP and websockets at the same time, where the websockets URL's are not
+websocket-only or not known in advance can be done by using the
+<directive type="RewriteRule" module="mod_rewrite">RewriteRule</directive> directive to
+configure the websockets proxying:</p>
+<highlight language="config">
+ProxyPass / http://example.com:9080/
+RewriteEngine on
+RewriteCond %{HTTP:Upgrade} websocket [NC]
+RewriteCond %{HTTP:Connection} upgrade [NC]
+RewriteRule ^/?(.*) "ws://example.com:9080/$1" [P,L]
+</highlight>
+
+
 <p>Load balancing for multiple backends can be achieved using <module>mod_proxy_balancer</module>.</p>
 
 <p>In fact the module can be used to upgrade to other protocols, you can set the <code>upgrade</code>