ported varnish docs

docs/configuring/proxies/varnish.rst

@@ -1,34 +1,37 @@
-To be sure Varnish will work properly with NodeBB check that your configuration ```/etc/varnish/default.vcl``` is optimized for **websockets**.
+Configuring Varnish Cache
+==========================
 
-```varnish
+To be sure Varnish will work properly with NodeBB check that your configuration ``/etc/varnish/default.vcl`` is optimized for **websockets**.
-backend nodebb {
-  .host = "127.0.0.1"; # your nodebb host
-  .port = "4567"; # your nodebb port
-}
 
-sub vcl_recv {
+.. code:: 
 
-  # Pipe websocket connections directly to Node.js
+  backend nodebb {
-  if (req.http.Upgrade ~ "(?i)websocket") {
+    .host = "127.0.0.1"; # your nodebb host
-    set req.backend = nodebb;
+    .port = "4567"; # your nodebb port
-    return (pipe);
   }
 
-  # NodeBB
+  sub vcl_recv {
-  if (req.http.host == "forum.yourwebsite.com") { # change this to match your host
+
-    if (req.url ~ "^/socket.io/") {
+    # Pipe websocket connections directly to Node.js
-        set req.backend = nodebb;
+    if (req.http.Upgrade ~ "(?i)websocket") {
-        return (pipe); # return pass seems not working for websockets
+      set req.backend = nodebb;
+      return (pipe);
+    }
+
+    # NodeBB
+    if (req.http.host == "forum.yourwebsite.com") { # change this to match your host
+      if (req.url ~ "^/socket.io/") {
+          set req.backend = nodebb;
+          return (pipe); # return pass seems not working for websockets
+      }
+      return (pass); # don't cache
     }
-    return (pass); # don't cache
-  }
 
-}
+  }
 
-sub vcl_pipe {
+  sub vcl_pipe {
-  # Need to copy the upgrade header
+    # Need to copy the upgrade header
-  if (req.http.upgrade) {
+    if (req.http.upgrade) {
-    set bereq.http.upgrade = req.http.upgrade;
+      set bereq.http.upgrade = req.http.upgrade;
+    }
   }
-}
-```