From 41881be909ee933d80f1e22fed6b14e0d912ce8b Mon Sep 17 00:00:00 2001
From: Michael Jumper <mjumper@apache.org>
Date: Sun, 15 Jan 2017 14:00:20 -0800
Subject: [PATCH] GUACAMOLE-172: Do not send potentially-invalid "sync" as a
 keep-alive. Use "nop" instead.

---
 guacamole-common-js/src/main/webapp/modules/Client.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/guacamole-common-js/src/main/webapp/modules/Client.js b/guacamole-common-js/src/main/webapp/modules/Client.js
index 45ebfe303..1eb21f307 100644
--- a/guacamole-common-js/src/main/webapp/modules/Client.js
+++ b/guacamole-common-js/src/main/webapp/modules/Client.js
@@ -1346,7 +1346,7 @@ Guacamole.Client = function(tunnel) {
 
         // Ping every 5 seconds (ensure connection alive)
         pingInterval = window.setInterval(function() {
-            tunnel.sendMessage("sync", currentTimestamp);
+            tunnel.sendMessage("nop");
         }, 5000);
 
         setState(STATE_WAITING);