From e19ba70c7ff42565a02165c7f1fef1f9aa3d8f88 Mon Sep 17 00:00:00 2001
From: Theo Arends <11044339+arendst@users.noreply.github.com>
Date: Thu, 28 Mar 2019 14:39:12 +0100
Subject: [PATCH] Fix exception due to UDP packet memory flooding (#5540)

Fix exception due to UDP packet memory flooding (#5540)
---
 sonoff/xplg_wemohue.ino | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sonoff/xplg_wemohue.ino b/sonoff/xplg_wemohue.ino
index e3351fbe4..51e51f84b 100644
--- a/sonoff/xplg_wemohue.ino
+++ b/sonoff/xplg_wemohue.ino
@@ -222,7 +222,7 @@ bool UdpConnect(void)
 
 void PollUdp(void)
 {
-  if (udp_connected && !udp_response_mutex && devices_present) {
+  if (udp_connected) {
     if (PortUdp.parsePacket()) {
       char packet_buffer[UDP_BUFFER_SIZE];     // buffer to hold incoming UDP/SSDP packet
 
@@ -232,7 +232,7 @@ void PollUdp(void)
       AddLog_P2(LOG_LEVEL_DEBUG_MORE, PSTR("UDP: Packet (%d)"), len);
 //      AddLog_P2(LOG_LEVEL_DEBUG_MORE, PSTR("\n%s"), packet_buffer);
 
-      if (strstr_P(packet_buffer, PSTR("M-SEARCH")) != nullptr) {
+      if ((strstr_P(packet_buffer, PSTR("M-SEARCH")) != nullptr) && !udp_response_mutex && devices_present) {
         udp_response_mutex = true;
 
         udp_remote_ip = PortUdp.remoteIP();