Add port listener config for http server

server/config.example.js

@@ -16,6 +16,10 @@ module.exports =
 	},
 	// Listening port for https server.
 	listeningPort : 443,
+	// Any http request is redirected to https.
+	// Listening port for http server. 
+	listeningRedirectPort : 80,
+	// STUN/TURN 
 	turnServers   : [
 		{
 			urls : [