Do not create a Pull Request without creating an issue first

161 was created related to this request.

The design of your solution to the problem should be discussed and agreed in an issue before submitting the PR According to MQTTv5 spec, Maximum QoS property should not be included in CONNECT packet. Actually, when I tried to send CONNECT packet included that property to Mosquitto MQTT server, the connection was refused by Mosquitto. So, I think we should remove Maximum QoS property from CONNECT packet in this library.

note: This request is same with #240, but I remaked the request after some confirmations, because there was a problem with test on my envrionment (#242). As a result, the problem wasn't probably related to this change.

ECA - Eclipse Contributer Agreement had already done

Testing

make test was passed. I sometimes catched an issue with #242, but tests were passed temporarily with making the timeout of autopaho's cm longer.
I confirmed almost all parts related to this change with grep ''QOS" or "QoS" (including "MaximumQoS" and "MaximumQOS") just in case.

Closing issues closes #161

eclipse / paho.golang

Remove MaximumQoS property from CONNECT packet #161 #243

161 was created related to this request.