Need help to understand last will topic with AWS

[simon884]

Hi all,

I'm working with nrf9151 and aws iot core and mqtt, everything works well, but for now I'd like to have for example a topic like `/topic/id_client/stauts`

where I publish a retained message when my device is connected to the broker, and I'd like to use last will topic on this topic, is it possible with aws_iot library? I've found this parameter CONFIG_MQTT_HELPER_LAST_WILL, but I don't undertsand how to use it, is there somewhere an example provided by Nordic?

Thanks

[dejans]

Hi,

For retainig the messages, you can look at retain flag in mqtt_publish() (in mqtt.c).
This discussion might be relevant for last will topic.

Best regards,
Dejan