Help with iRobot MQTT

🚧 Developers
8

I've hit a wall. I've tried everything I can think of, but I can't get Hubitat to connect to the local Roomba MQTT broker. The code in the driver is pretty straightforward:

try
{
    interfaces.mqtt.connect(
        "ssl://192.168.1.196:8883", 
        "xxx", //blid from my Roomba
        "xxx", //blid from my Roomba
        "yyy", //password from my Roomba
        tlsVersion: "1.2", 
        privateKey: privateKey, 
        caCertificate: caCert, 
        clientCertificate: clientCert
    )
    if (interfaces.mqtt.isConnected()) {
        interfaces.mqtt.disconnect()
    } else {
        log.debug "MQTT failed to connect..."
    }
}
catch (e) {
   log.debug e
}

But the only response I ever get is Connection refused.

I am able to connect to the Roomba with this Python code:
https://github.com/koalazak/dorita980/issues/10#issuecomment-296666429
and I've used it to confirm that the MQTT connection is available and that the private key, client cretificate, and CA certificate are all valid. I've tried it with TLS 1, 1.1, and 1.2. I've tried it without TLS. But nothing seems to work.

I don't know what could be wrong or what else to try, so I'm going to have to give up on this for now. As an alternative, I'm going to try setting up Mosquitto as an MQTT bridge and have Hubitat communicate through that instead. I had wanted to eliminate the dependency on my Raspberry Pi, but it doesn't look like I'm going to be able to accomplish that. With Mosquitto, I'm hoping to get real-time updates from the Roomba, instead of having to poll the REST API through rest980.

Wish me luck!