Plex connection fails after changing networks (Wi-Fi ↔ Hotspot) until Plex server is removed and re-added

[vinyln0va]

Environment
Ampcast: 0.9.29
Platform: macOS 10.15.7 (Electron app)
Plex Media Server: 1.43.2.10687
Plex Server: Unraid Docker
Connection: Plex Remote Access enabled and fully accessible

Description
I've found what appears to be a reproducible issue with the Plex integration when changing between network connections.
Ampcast works correctly after adding my Plex server, but after switching between my home Wi-Fi and a mobile hotspot, Plex requests begin failing with TypeError: Failed to fetch.
Removing and re-adding the Plex server in Ampcast immediately restores functionality until the next network change.
Official Plex clients (Plexamp and Plex Web) continue to work normally throughout.

Steps to reproduce
Start Ampcast and add a Plex server.
Confirm the music library loads correctly.
Change from home Wi-Fi to a mobile hotspot.
Attempt to browse Albums, Artists, Genres, etc.
Plex requests fail with Failed to fetch.
Return to the original Wi-Fi network.
Plex still does not recover.
Remove the Plex server from Ampcast.
Re-add the Plex server.
Everything immediately works again.
This behaviour is reproducible.

Diagnostics
plexAuth: Connected with errors
mediaServices: plex connected
TypeError: Failed to fetch
Object.getMusicLibraries()

Additional troubleshooting performed
The following have all been verified and are working correctly:
Plex Remote Access is fully accessible.
Plexamp works locally and remotely.
Plex Web works locally and remotely.
http://:32400/identity responds correctly while on the LAN.
plex.direct endpoint is reachable.
CORS preflight (OPTIONS) requests return HTTP 200.
Plex server can be reached from the browser.
Removing and re-adding the Plex server immediately restores functionality.

[rekkyrosso]

Okay, thanks for reporting. I think I know the likely cause.

You shouldn't need to remove the Plex server, you can just disconnect and login again (right-click on the Plex icon in the tree-view). Does it only work if you remove the server?

I will try to fix this in the next release. Thanks for reporting.

[vinyln0va]

Thanks for the quick response.
Yes, I'll test disconnect/login instead of removing the server the next time it happens and report back.
If that works, it'll be a much easier workaround until the next release.
Thanks for taking a look!

[rekkyrosso]

Should be fixed now.

https://github.com/rekkyrosso/ampcast/releases/tag/v0.9.30

[vinyln0va]

Thanks will test

[vinyln0va]

Hi,

Just to confirm your fix has worked!

Thanks

[rekkyrosso]

Good to hear!