From ee605183e5346ad51fe86f1b3654a337c792f832 Mon Sep 17 00:00:00 2001
From: yflory <yann.flory@xwiki.com>
Date: Mon, 15 Jan 2018 15:40:52 +0100
Subject: [PATCH] Make sure we don't have duplicates in the webchannel members

---
 www/common/metadata-manager.js | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/www/common/metadata-manager.js b/www/common/metadata-manager.js
index bf99e4b84..0ec1c07ea 100644
--- a/www/common/metadata-manager.js
+++ b/www/common/metadata-manager.js
@@ -97,6 +97,8 @@ define(['json.sortify'], function (Sortify) {
             change(true);
         });
         sframeChan.on('EV_RT_JOIN', function (ev) {
+            var idx = members.indexOf(ev);
+            if (idx !== -1) { console.log('Error: ' + ev + ' is already in members'); return; }
             members.push(ev);
             if (!meta.user) { return; }
             change(false);