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Mosquitto

Mac
Linux

Using mosquitto on a mac

install mqtt server
```
brew install mosquitto
```
start the mqtt server
```
brew services restart mosquitto
```
Do a quick test of server, start a subscriber on a topic:

Note: this will wait until you press control-c (publish a message, see below)
```
mosquitto_sub -t test/hello
```

In another window, publish a message to that topic:

mosquitto_pub -h localhost -q 0 -t test/hello -m 'yo!'

For Meshtastic to be able to access that server, two settings need to be changed in the /usr/local/etc/mosquitto/mosquitto.conf file:
```
listener 1883 0.0.0.0
allow_anonymous true
```
Restart the service:
```
brew services restart mosquitto
```
If you are using the mac firewall, you will need to go into: System Preferences > Security & Privacy > Firewall > Firewall Options and add it.

Using mosquitto on raspberry pi bookworm

install mqtt server

sudo apt-get install mosquitto mosquitto-clients

start the mqtt server
```
sudo systemctl start mosquitto
```
Do a quick test of server, start a subscriber on a topic:

Note: this will wait until you press control-c (publish a message, see below)
```
mosquitto_sub -t test/hello
```

In another console, publish a message to that topic:

mosquitto_pub -h localhost -q 0 -t test/hello -m 'yo!'

For Meshtastic to be able to access that server, two settings need to be changed in the /etc/mosquitto/mosquitto.conf file:
```
sudo sh -c "echo 'listener 1883 0.0.0.0\nallow_anonymous true' >> /etc/mosquitto/mosquitto.conf"
```
Restart the service:
```
sudo systemctl restart mosquitto
```

Using mosquitto on a mac
Using mosquitto on raspberry pi bookworm