From f31186d20b6e18455271e1986f48a70a4eae57d0 Mon Sep 17 00:00:00 2001
From: cadorn <christoph@christophdorn.com>
Date: Tue, 14 Aug 2012 14:34:59 -0700
Subject: [PATCH] regular expression support for checking routes

---
 lib/engine.io.js | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/lib/engine.io.js b/lib/engine.io.js
index 888b80700..da32a8d60 100644
--- a/lib/engine.io.js
+++ b/lib/engine.io.js
@@ -96,14 +96,25 @@ exports.listen = function (port, options, fn) {
 exports.attach = function (server, options) {
   var engine = new exports.Server(options)
     , options = options || {}
-    , path = (options.path || '/engine.io').replace(/\/$/, '')
+    , path = '/engine.io'
     , resource = options.resource || 'default'
 
+  if (typeof options.path === 'string') {
+	path = options.path.replace(/\/$/, '');    
+
   // normalize path
   path += '/' + resource + '/';
+  } else
+  if (typeof options.path === 'object' && options.path.test) {
+	path = options.path;
+  }
 
   function check (req) {
+    if (typeof path === 'string') {
     return path == req.url.substr(0, path.length);
+	} else {
+		return path.test(req.url);
+	}
   }
 
   // cache and clean up listeners