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Do you mean you were using MQTT over websockets before, and you've since moved to pure MQTT (still over TCP), without websockets in between? Are you sure websockets were the cause of your network bandwidth issues?

I'm on a different team, AFAIK we where using simple JSON payloads on websocket connections. Dropping websockets and switching to MQTT saved a lot of bandwidth. I can ask for precise numbers or details if you wish.

I'm interested.

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