Exception (28) on demo app

[aldolo69]

during "discovery" esp crash with exc 28 every time.
esp core version 2.7.4 (latest)

[lalalandrus]

took a while but i narrowed the exception cause in WemoManager.cpp to line 65 :
UDP.read(packetBuffer, packetSize);

I think the new core returns a UDP packet larger than packetBuffer as packetSize is unchecked. My fix is to modify WemoManager.cpp line 8 to:
char packetBuffer[1024];

Probably overkill but it works. If you are short on ram then reduce it until it doesnt work and report your findings. There probably is a way to check the UDP library to see what it should be expecting based on the typical Alexa packet but I am too lazy.

[aldolo69]

it works now. you should commit the change to github