Private MQTT Server not receiving Meshtastic Messages

1

I’ve set up a MQTT server to receive the MQTT messages from my Meshtastic unit. I can send test messages to the server and they show, but no messages are received from the units. They are connecting as I can see on the Mosquitto MQTT logs.

1726334849: New connection from 102.182.142.20:44652 on port 1883.
1726334849: New client connected from 102.182.142.20:44652 as !ea245240 (p2, c1, k60, u’s>
1726334991: Client !ea245240 has exceeded timeout, disconnecting.
1726334998: New connection from 102.182.142.20:44658 on port 1883.
1726334999: New client connected from 102.182.142.20:44658 as !ea245240 (p2, c1, k60, u’s>
1726335201: Client !ea245240 disconnected.
1726335332: New connection from 102.182.142.20:45142 on port 1883.
1726335332: New client connected from 102.182.142.20:45142 as !dd42e578 (p2, c1, k60, u’s>
1726335372: Client !dd42e578 disconnected.
1726335380: New connection from 102.182.142.20:45144 on port 1883.
1726335380: New client connected from 102.182.142.20:45144 as !ea245240 (p2, c1, k60, u’s>
1726335591: Client !ea245240 has exceeded timeout, disconnecting.
1726335598: New connection from 102.182.142.20:45146 on port 1883.
1726335598: New client connected from 102.182.142.20:45146 as !ea245240 (p2, c1, k60, u’s>
1726335711: Client !ea245240 has exceeded timeout, disconnecting.

Is there anyway to see what messages are being sent? If they are sent?

Best regards
Andre

2

To make this work, ensure that your node has a Meshtastic channel configured called “mqtt”. Enable Downlink. The PSK can be random and doesn’t matter. This channel allows the node to listen to messages on the msh/2/json/mqtt/ topic.

3

{
“from”: ,
“to”: <decimal Node ID of recipient for a DM (optional)>,
“channel”: <channel index (optional)>,
“type”: “type”,
“payload”: {
“key”:“value”
…
}
}
“from” is your gateway node

4

Is there documentation about this?