From d992efc34bed9e6aa38f3f562eece865512d4dca Mon Sep 17 00:00:00 2001
From: JC Brand <jc@opkode.com>
Date: Fri, 17 Jul 2015 16:42:58 +0200
Subject: [PATCH] Optimization: only query for MAM prefs when necessary

updates #306
---
 converse.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/converse.js b/converse.js
index b2f5d9db3..c85bc7666 100644
--- a/converse.js
+++ b/converse.js
@@ -5103,7 +5103,8 @@
             },
 
             onFeatureAdded: function (feature) {
-                if (feature.get('var') == Strophe.NS.MAM) {
+                var prefs = feature.get('preferences') || {};
+                if (feature.get('var') == Strophe.NS.MAM && prefs['default'] !== converse.message_archiving) {
                     // Ask the server for archiving preferences
                     converse.connection.sendIQ(
                         $iq({'type': 'get'}).c('prefs', {'xmlns': Strophe.NS.MAM}),