mqtt subscribe not reciveing messages, but publish works good.

[moinologics]

MicroPython v1.15 on ESP8266

[nznobody]

I've had issues using MQTT with Thingsboard. Potentially for this reason. I ended up digging into the issue and found problems with the MQTT / SSL interactions. In the end I added a lot of logging and had to change some function calls on the socket to being async (non-blocking) and handling that.
This could be only SSL related. I'll raise my own issue around that soon.

[nznobody]

See: #147 (comment)