MQTT event when device gets active/inactive

[Alex9779]

• I have searched the issues of this repository and believe that this is not a duplicate.

Summary

You can set an expected uplink interval in a device profile which then is used to tell in the web interface if a device is active or inactive. This should also be published as an MQTT message to be able to use that information in the target application.

What is the use-case?

If a device gets active/inactive an MQTT messsage should be published so that you can react in the target application. Like send out a push message to someone to inform about a maybe defective device.

Implementation description

Can you implement this by yourself and make a pull request?