Implement OnDisconnect (build a presence system)

[george-kar]

My web project already uses Firebase RealTime OnDisconnect

https://firebase.google.com/docs/reference/js/v8/firebase.database.OnDisconnect class.

I was wondering if thats possible with Delphi implementation. If not, if its hard to added?

If I can use that in my application then I can use the component and of course I will donate.

[SchneiderInfosystems]

Do you want to build a presence system with it?

As it is described in the following blog: https://firebase.blog/posts/2013/06/how-to-build-presence-system?

In the REST API reference I can't find anything about "OnDisconnect", so I would have to reverse engineer a JavaScript solution and see what is sent to the server with this command.

Do you already have a simple JS solution that you can publish here or which you could send me by mail?

[george-kar]

Hello,

Yes thats what I want to create a presence system as described on this link you provided. But you are right there isn't on the REST API. But its easy to reverse it, I had a quick look and its possible.

Here is a working example in Javascript that would help you to see in action: https://github.com/isarantis/firebase-presence-example

[SchneiderInfosystems]

Thank you for this example.

Next week I will be on vacation in the Swiss mountains for a week. After that I will check what the effort for the implementation of this new feature is. Probably I won't be able to implement it in the first quarter of 2023 without a donation in the range between 1000 to 3000 EUR, because otherwise I have to implement more urgent projects first.

[george-kar]

Hello, I will email you asap.

[SchneiderInfosystems]

You can use this mail address:
fb4d@schneider-infosys.ch