Code for sending disovery message from MicroPython

[jonnor]

https://micropython.org is a Python implementation for bare-metal microcontrollers, including some with WiFi support like ESP8266.
It has a MQTT library included for these devices, https://github.com/micropython/micropython-lib/tree/master/umqtt.simple
So it should be usable together msgflo-register-foreign right away. But sending the the discovery message from the device itself would be a bit nicer, as automatic discovery etc just-works.
https://msgflo.org/docs/communications/index.html

There also seems to be some JSON support, so probably should can that
https://github.com/micropython/micropython-lib/tree/master/json