Following-up … if I add an exception handler and keep trying to connect, I get a bunch of different error numbers: Uncaught exception: -17168 Uncaught exception: -10368 Uncaught exception: -10368 Uncaught exception: -10368 Uncaught exception: -1 Uncaught exception: -32512 Uncaught exception: -29312 Uncaught exception: -16 Uncaught exception: -10368 Uncaught exception: -4480 Uncaught exception: -19840 Uncaught exception: -4480 Uncaught exception: -16912 Any advice on how / where to look those up? Cheers, Tim

@wolli01 Depends on a lot of circumstances. Use WiFi and simply upload the file using FTP. LoRa will need more code and tiny files.

Thanks guys for the information.

@aktivalux said in Kernel Panic when using SSL connections (MQTT or HTTPS): -35123 You mean it raises OSError: -35123? Actually -35123 beeing -0x8933 is out of the error range defined by mbedtls. Is there a typo in this numer? https://tls.mbed.org/api/error_8h.html

Does it work reliably if repeated for hundreds of requests? Properly raised exceptions are acceptable in my opinion.