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Fix off-by-one error which causes "M-SEARCH" to be missed if it's at the start of the UDP packet. #3

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Fix off-by-one error which causes "M-SEARCH" to be missed if it's at the start of the UDP packet. #3

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2 changes: 1 addition & 1 deletion UpnpBroadcastResponder.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -67,7 +67,7 @@ void UpnpBroadcastResponder::serverLoop(){
// check if this is a M-SEARCH for WeMo device
String request = String((char *)packetBuffer);

if(request.indexOf('M-SEARCH') > 0) {
if(request.indexOf("M-SEARCH") >= 0) {
// Issue https://github.com/kakopappa/arduino-esp8266-alexa-multiple-wemo-switch/issues/22 fix
if((request.indexOf("urn:Belkin:device:**") > 0) || (request.indexOf("ssdp:all") > 0) || (request.indexOf("upnp:rootdevice") > 0)) {
Serial.println("Got UDP Belkin Request..");
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