[elithrar]

> The problem with MQTT is that most of the use cases I’m interested in involve a web browser as at least one party of the connection, and the browser doesn’t support MQTT. I could wrap MQTT in a WebSocket, but then I’d lose the advantages of MQTT’s compactness and interoperability (unless MQTT-over-WebSocket is a thing?)

We support MQTT over WS (or JSON over WS, or just HTTP) in Cloudflare Pub/Sub, FWIW - https://developers.cloudflare.com/pub-sub/learning/websocket...

I also agree with the comments re: MQTT being well suited to a lot of these "broadcast" use-case, but that the IoT roots seem to hold it back. MQTT 5.0 is just a great protocol — clear spec, explicit about errors, flexible payloads — that make it well suited to these broadcast/fan-in/real-time workloads. The traditional cloud providers do MQTT (3.1.1) in their respective IoT platforms but never grew it beyond that.

[jconley]

Can I get in on that beta? Submitted the form yesterday. Currently building something that could use it. ;)