From 2531bc638a03db64ec154c52c1210627b227a06d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Xose=20P=C3=A9rez?= <xose.perez@gmail.com>
Date: Wed, 16 Aug 2017 00:09:08 +0200
Subject: [PATCH] Issue #185. Discard MQTT messages with payload size 0

---
 code/espurna/mqtt.ino | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/code/espurna/mqtt.ino b/code/espurna/mqtt.ino
index 21c6c9f1..151fcd64 100644
--- a/code/espurna/mqtt.ino
+++ b/code/espurna/mqtt.ino
@@ -211,6 +211,8 @@ void _mqttOnDisconnect() {
 
 void _mqttOnMessage(char* topic, char* payload, unsigned int len) {
 
+    if (len == 0) return;
+
     char message[len + 1];
     strlcpy(message, (char *) payload, len + 1);