App stuck on "Waiting for network" when using Ethernet (LAN via USB-C adapter)

[MParvin]

Describe the bug

Hi,

I'm using the Transfer app on Android with an Ethernet connection (LAN through a USB-C to Ethernet adapter). My phone has internet access and the network is working fine for other apps, but the Transfer app keeps showing "Waiting for network" and never starts the server.

I can browse the web, so the network is definitely active. However, the app doesn't seem to recognize the Ethernet interface and only looks for WiFi.

It would be great if the app could work with any active network connection, not just WiFi.
Thanks for your work!

To Reproduce

1. Connect phone to internet using USB-C to Ethernet adapter (LAN)
2. Open the Transfer app
3. Select directory you want to transer
4. App shows "Waiting for network" and never starts

Expected behavior

The app should detect the active network connection (Ethernet/LAN) and start the server, just like it does with WiFi. I should be able to access files from my laptop using the phone's IP address.

Device

Samsung A73 5G

Android version

16

App Version

0.6.1

Additional context

No response

[matan-h]

Interesting case, does it work if you both connect it to the LAN via cable AND turn on the hotspot?

with any active network connection

Its an android API problem - there is no clear way to know all IPs 0.0.0.0 represents that aren't local, every manufacturer does it a bit differently. see
#81 (comment) line and networkhelper.kt for how I implemented it, if you know a better way/a fix, please explain it/PR.

link: your issue sound very similar to #43 , It need more research