When I study the code about mqtt in “backend.go.”,I see the line245 : “if token := b.conn.Subscribe(statsTopic, 2, b.statsPacketHandler); token.Wait() && token.Error() !”
Is it Subscribe the Qos 2 of mqtt message? I want to know whether I can change this Qos ?How?
I don’t think there’s a configuration option to change this. It should be fairly easy to add it as a cli argument or env var, but that means rebuilding the source too.