Android Question SOLVED - MQTT Polling of devices

[JMB]

I was wondering if folk out there had some useful ideas about how to poll devices such as ESP chips to ensure that they are still live via MQTT.

I am in the process of writing something involving a timer which sends out a "What's your status" message to all registered devices and then waits a while to see if a reply is received or not, but I was wondering if there were more elegant techniques that people were aware of.

Thanks.

JMB

 

[Erel]

Related topic: [B4X] MQTT - Connect & Reconnect

You can do something similar from B4R. Use a timer to send a "ping" topic every 5 seconds. If no ping was received after 10 seconds then the client is not available.

 

[JMB]

Of course - send it from the ESP device!

Thank you!