Switch mqtt vehiclepositions port to 443

[hbruch]

City of Herrenberg seems to block ports other than 80 and 443. Especially vehiclee positions can't be displayes from inside the Herrenberg network.

Please check, if the mqtt service can be switched to use port 443.

[leonardehrenfried]

It's already on port 443 but using the websockets protocol.

Is that maybe blocked?

[hbruch]

Hm, that might be.

If mqtt is already served via 443, these firewall allowed ports are outdated and can be removed?

[leonardehrenfried]

Port 1884 we can close, yes. The others are occasionally useful for debugging the raw mqtt topics.

[hbruch]

@stadtnavimanager vehicle positions are already sent via Port 443. If the municipal firewall filters the mqtt protocol (as it seems), these firewall rules need to be changed.

[leonardehrenfried]

To be precise, it's not the MQTT protocol that we need but Websockets which MQTT is multiplexed over.

[stadtnavimanager]

I forwarded the link to this issue to our IT and hope to get support soon.