Consider to move MQTT support to HiveMQ MQTT Client

[artembilan]

This client support both MQTT v3.1.1 and v5 protocol and it is Java 8 and Reactive ready: https://github.com/hivemq/hivemq-mqtt-client

Unlike Paho which is not clear when will support v5: https://github.com/eclipse/paho.mqtt.java/blob/master/MQTTv5.md

Although I might agree that this could be something for version 6.0 or we can support both clients since 5.3...

[smaugs]

+1

[oxcafedead]

Paho supports v5 already :)

[artembilan]

@oxcafedead ,

doesn't look like: https://www.eclipse.org/paho/index.php?page=clients/java/index.php.

Probably they have plans for that support, but no official release yet.

Thanks

[oxcafedead]

@artembilan,

strange, because the initial link brought by you in the issue states v5 support :)
https://github.com/eclipse/paho.mqtt.java/blob/master/MQTTv5.md
also: https://github.com/eclipse/paho.mqtt.java/releases/tag/v1.2.5

[artembilan]

Thank you for the pointer, @oxcafedead !

released this on Jul 14

So, that happened recently.

Anyway I see that we need to build v5-compatible channel adapters to support a new artifact from them.

On the other hand Hive also have different packages (probably with different API) for v3 & v5, respectively.

Although I still tended to move to Hive client since they have Reactor API for us.

Only the problem not clear when I will have time and resources to just into this issue.

Contributions are welcome!

[vivianazimbone]

Paho still not fully supports v5 and the latest version dates back to July 2020...