Using two gateways MQTT

[sindrome73]

Hello!!
As the title I would use for my control Domoticz two Gateway MQTT, being my Etherneth network very well distributed.

is it possible to use 2 Gateway MQTT with a Domoticz controller ???

Thank you!!

[mfalkvidd]

@sindrome73 yes

[sindrome73]

Grazie mille!!

Thanks!!

[gohan]

@mfalkvidd How does the system knows which gateway is?

[sindrome73]

I do not understand. Tell me I'm available

[mfalkvidd]

@gohan I don't know but I guess it does it the same way as it does when using multiple ethernet gateways, multiple serial gateways and/or two different gateways.

[gohan]

It's not actually the same because the mqtt broker is only one, the controller can not identify the gateway if they are publishing to same topic, unless there is a way to assign an ID for each gateway. Right?

[mfalkvidd]

@gohan oh, now I understand. Yes, if you use the same broker you would need to set different topics.

// Set this node's subscribe and publish topic prefix
#define MY_MQTT_PUBLISH_TOPIC_PREFIX "mygateway1-out"
#define MY_MQTT_SUBSCRIBE_TOPIC_PREFIX "mygateway1-in"

[gohan]

The problem is that domoticz only works with its own fixed topics. It may be worth trying to see if adding a unique sub topic for each gateway, the controller can still recognize the mysensors protocol