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The Curl statements work against the cielo smarthome api endpoint.

This is the API behind the UI you see in your browser when you use their website to control the thermostat.
It is a websocket based api (which curl supports), rather than polling, so i expect it's fairly responsive.? ?More to the point, it's a signalR based API () using websockets.

So the curl statements (and then websocket messages) can control/get data from the thermostats without a node.js interface or anything else.

The crypto/etc here is pretty easy to convert to C#.

To your question of how this was figured out, it's not usually that hard, sometimes you just look at the .js files that the UI uses, etc, and it's obvious.

Reading this code, ironically most of it is not needed, either for javascript, or C#.

What the author doesn't seem to have noticed is that, as mentioned, it is clearly a signalR based app (i can't tell what version, but if i had a login/thermostat, i could).?
Most of the code in the javascript here is sort of a by-hand hack-up of trying to emulate the signalr protocols, like the negotiate protocol and such.
This is not needed - microsoft provides a javascript client for signalr that can do all of this for you:


There is like 100 lines (maybe) of code needed here.
You just need the names of stuff in 273->329. Those are the method and message names that you use with the signalR client.
You also need the auth token grabbing, but that can be done pretty easily.

More to our speed, they also provide a C# .net client for SignalR. The latest is here:?
I haven't checked if this is compatible with the framework versions on Crestron.
But for sure, the older one (which should still work with the Cielo app) here will:?

(and there is lots of signalR client sample code)

Hopefully this helps - given there is a ready made library for working with this sort of API, it really should not be a hassle to deal with.

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I thought that the curl statements worked not directly against the Mr. Cool or the Cielo Smart Home Thermostat but through Node.js interface built by nicholas robinson that then talks to the Cielo thermostat.

To try and get to the bottom of what it would take to write a driver I've written an email to Cielo to see if I can get a copy of the API.

Thanks

Jay

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