Description
The "will message" in MQTT can be sent with the retain flag on, meaning that it will be sent to the new subscribers as well. We need to send it with this flag on, if it was specified by the client.
The "will message" in MQTT can be sent with the retain flag on, meaning that it will be sent to the new subscribers as well. We need to send it with this flag on, if it was specified by the client.