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For questions regarding the MQTT messaging protocol.
2
votes
How to upgrade Mosquitto MQTT to the latest version?
I'm guessing you're running Raspbian Jessie, which only has Mosquitto 1.3.4 in the repositories. Raspbian Stretch does indeed have a more recent version — 1.4.10.
If this would be sufficient, you can …
1
vote
Paho MQTT: Error during autorun
My guess is that your code is running before the network is actually ready, so when trying to resolve the URL, things go horribly wrong and your script crashes.
Cron provides no real promises about w …