MQTT-SN with DTLS?

[Volker]

HI!

my next job needs to handle "MQTT-SN" and so i would like to use emqtt. the target IoT device also provide an encryption property, it is calling "DTLS" (dynamic-tls ???) it is also supported by emqtt and how can i setup it?

regards, volker.

[imsbha...@gmail.com]

Hi,

I have one query on MQTT-SN, since it is on udp:

How the server knows that the client is still connected? Is it determined only if the Ping request is missed for keepAlive timer expiry? Or there is any other way ?

Thanks