[Bug]:IP Address and QR Code do not update when network changes

[Th-Shivam]

Bug Description

When the application is running and the host machine switches to a different network (e.g., changing WiFi, connecting to a different hotspot), the displayed IP address and the connection QR code in the browser do not update automatically. They remain stuck on the old IP address, making it impossible for the client to connect without manually refreshing or restarting the application.

Steps to Reproduce

1. Connect your PC to WiFi Network A.
2. Start the Rein application and open the browser.
3. Note the IP address and QR code.
4. Disconnect from Network A and connect to WiFi Network B (or a mobile hotspot).
5. Observe that the UI still displays the IP from Network A.
6. Try to scan the QR code with a phone connected to Network B - it will fail to connect.

Expected Behavior

The application should detect network interface changes and automatically:

1. Update the displayed IP address.
2. Regenerate the QR code with the new connection URL.
3. Ideally, notify the connected client or UI of the change.

Desktop Operating System

Linux (Wayland - GNOME)

Mobile Device (Client)

Firefox

Rein Version

Dev (Not specified in package.json)

Console Logs / Error Messages

No specific error messages in the console. The app simply retains the stale IP address.

Screenshots / Recordings

No response

Checklist

• I have searched for existing issues to avoid duplicates

[Tirthtk18]

I have implemented a fix for this using a Reactive Network Watcher. I'll be submitting a PR shortly

[Th-Shivam]

@Tirthtk18 I have already submitted a PR for the same .
You can review that pr , if that does not satisfy you then you can discuss here .

[anchalkapoor424]

hi @Th-Shivam can I get to work on this?

[imxade]

@Th-Shivam Could you redo this, as I think some of the new changes might be getting reverted

[Th-Shivam]

I’ve synced with the latest branch and verified the fix locally everything is working correctly. The PR is up to date.
Let me know if you're seeing something different.