ESP32 root certificate usage

[tyczj]

In the Esp32-lwmqtt example where is the root_cert being used? I don't see anywhere in the code that it is referenced so I dont know how to set it

[hyperboras]

Same here. curious if I can use code from esp8266 example?

[raphael-bmec-co]

It does not seem to be required by CIOTC that you set the certificate. But if you want to then you need to set it on the WiFiClientSecure instance: https://github.com/espressif/arduino-esp32/tree/master/libraries/WiFiClientSecure