How can i use mosquitto pub a frame to a multicast group

ChirpStack Application Server
1

I have create a multicast group in Lora app server, but i don’t know how to send a frame a this multicast group by mosquitto_pub command.What is a multicast group mqtt topic?Like application mqtt topic ?

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This is my command send a frame to a lora node:

./mosquitto_pub -t “application/2/device/7f0d000010ffffff/tx” -m ‘{“immediately”:true,“frequency”:505300000,“confirmed”:false,“fPort”:2,“data”:“YWJjMTIzNDU2”}’

2

From the docs, it seems that’s not possible with MQTT, so you should use the gRPC or REST APIs to enqueue multicast messages.

3

Thanks for you reply,I will try it.

4

have you try the multicast queue?does it working?