logic bug :(

lib/server.js

@@ -27,7 +27,7 @@ var server = function(settings, http_server){
     this.setup = [];
 
     // they gave us an http server, lets use that
-    if(http_server !== null || http_server !== undefined){
+    if(http_server !== null && http_server !== undefined){
         this.server = http_server;
     } else{
         this.server = new http.Server();