MQTT-SN gateway not sending PINGREQ

[DiKa]

Hi, 

I'm running example mqttsn_sleepy_subscriber from nRF5_SDK_for_Thread_and_Zigbee_v4.1.0_32ce5f8 on a nRF52840-DK with RaspPi_OT_Border_Router_Demo_v4.1.0-1.alpha.img on a Raspberry Pi 3 and a nRF52840-Dongle running NCP plugged in.

I can see from logs of Paho MQTT-SN gateway that it doesn't send PINGREQ to gateway after publishing messages to sleepy client, while it does when there are no messages to publish. Consequently no PINGRESP is delivered to the client in those cases.

I've seen that this bug has already been reported (https://github.com/eclipse/paho.mqtt-sn.embedded-c/issues/165) and a commit to solve it has been added (https://github.com/eclipse/paho.mqtt-sn.embedded-c/commit/7aa44d94d1125074935a523303fe6f46eef70e14). How can I apply these changes to my gateway?

Thank you in advance.

[Øyvind]

Hello, 

The Paho MQTT-SN gateway is a third-party, have you looked at installation instruction of Gateway Github page?

Kind regards,
Øyvind

[Brian (Geek)]

Will mqtt-sn clients example run even if I update the mqtt-sn gateway. Won't it create any problem ? 

And I would also like to know will mqtt-sn clients example run with RSMB instead of Eclipse paho gateway ?