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We are looking at using MQTT as the messaging protocol on a new device we're building. We'd also like a web interface for the device. Does anyone know if you can implement a browser client app (without additional plugins) that talks MQTT?
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Yes, as mentioned in Steve-o's comment MQTT via websockets is very possible.
MQTT over Websockets allows you to receive MQTT data directly into a web browser. This is important as the web browser may become the DE-facto interface for displaying MQTT data. MQTT websocket support for web browsers is provided by the JavaScript client.
WebSockets are specially designed for point to point connections between a client and a server. However, MQTT adds on extra abstraction on top of the basic message sending mechanism such that multiple interested machines can subscribe to the topic of their interest.
Yes, as mentioned in Steve-o's comment MQTT via websockets is very possible.
There are 2 options at the moment
To answer your second question lighttpd has a websockets module that can be used to do forwarding to an existing broker with details here.
I've not been able to find anything for Apache that doesn't need you to write your own library to do the forwarding.
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