@Rudy ...I will fix next days github repository with a good zip file
Also I post the updates with some fixes
For the first tests, the update of PubSubClient may be skipped... it's necesssary when you want to test connection with persistent message store.
I suggest for the first tests to implement the code into ESP and connect using desktop client such as Mosquitto Client or Paho.
Pay attention if you try to use nodered to perform massive post messages to ESP broker ... there is a behaviour usign nodered clients that I will fix in next releases....
Thankyou so much.
Sincerely ... best rgds
Francesco Barone