Add local websocket proxy using xmpp-proxy to connect to any server

[moparisthebest]

It will print the websocket URL to stdout on startup, the default one is ws://127.0.0.1:10032/ws but it'll use any available port if that one isn't available.

Ideally the front-end would call the added tauri command proxy_port to get this automatically, and even fill it in as the default or something, but I'm not really a front end guy so didn't figure that out tonight. It would also be easy to make a command to start/stop the proxy, like maybe you could start+use it only if automatic discovery of the user's websocket server failed or they don't have one. Let me know if you want me to do something like this, if you can do the FE work that'd be quickest, otherwise tell me how you want it and I'll figure it out.

I'm the author of the added dependency xmpp-proxy (AGPLv3 just like fluux <3) and also the tauri part of converse-tauri which uses this same approach.

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[Copilot]

Pull request overview

This PR adds a local WebSocket proxy using the xmpp-proxy library to enable XMPP connections through a WebSocket interface. The proxy automatically starts on application launch and binds to port 10032 (or any available port if that's in use), with the port number accessible via a new Tauri command.

Changes:

• Adds xmpp-proxy and tokio dependencies for WebSocket proxy functionality
• Implements automatic proxy startup on application initialization
• Exposes proxy port to frontend via new proxy_port Tauri command

Reviewed changes

Copilot reviewed 2 out of 3 changed files in this pull request and generated 10 comments.

File	Description
apps/fluux/src-tauri/src/main.rs	Adds proxy initialization logic, proxy_port Tauri command, and automatic startup in main()
apps/fluux/src-tauri/Cargo.toml	Adds tokio and xmpp-proxy dependencies
apps/fluux/src-tauri/Cargo.lock	Dependency resolution for new crates and their transitive dependencies

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[p1bot]

You did it @moparisthebest!

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[mremond]

Hi !
Thanks for the PR !
I am not sure if the CLA contribute your Rust proxy as well. It could be a problem to provide commercial package if needed by some customers.
As we do not need something as complete as you proxy, I will check to see if I could implement a minimal proxy covering just the websocket to TCP part.

[mremond]

Hi !
Thanks for the PR.
As your proxy is full-featured and we needed a much simpler implementation, I got inspired by your approach, but made a simpler and straightforward implementation. This allow to project to have full control and knowledge on the proxy feature.
Thanks again !

[mremond]

main has now xmpp_proxy.rs and support for direct TCP connection.