From 3c4b4f5263ca2c5d6bd60f437f14df52da4776d8 Mon Sep 17 00:00:00 2001
From: Baris Usakli <barisusakli@gmail.com>
Date: Wed, 21 Mar 2018 12:25:25 -0400
Subject: [PATCH] don't call calback twice #6375

---
 src/database/redis.js | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/src/database/redis.js b/src/database/redis.js
index e88663cf70..d5b03ec967 100644
--- a/src/database/redis.js
+++ b/src/database/redis.js
@@ -73,7 +73,7 @@ redisModule.connect = function (options, callback) {
 	callback = callback || function () {};
 	var redis_socket_or_host = nconf.get('redis:host');
 	var cxn;
-
+	var callbackCalled = false;
 	options = options || {};
 
 	if (nconf.get('redis:password')) {
@@ -92,11 +92,17 @@ redisModule.connect = function (options, callback) {
 
 	cxn.on('error', function (err) {
 		winston.error(err.stack);
-		callback(err);
+		if (!callbackCalled) {
+			callbackCalled = true;
+			callback(err);
+		}
 	});
 
 	cxn.on('ready', function () {
-		callback();
+		if (!callbackCalled) {
+			callbackCalled = true;
+			callback();
+		}
 	});
 
 	if (nconf.get('redis:password')) {