1046897 - WiFi discovery confused when primary interface changes

Status: NEW

(DevTools :: about:debugging, defect, P3)

Description

[J. Ryan Stinnett [:jryans] (Use needinfo, replies may be slow)]

Could be OS-specific, I was on a Mac at the time.

STR:
1. Connect with multiple interfaces (ex. WiFi and Ethernet) simultaneously
2. Set up a non-WiFi interface as the primary interface
3. WiFi discovery works
4. Unplug non-WiFi interface (WiFi becomes primary)
5. WiFi discovery is now broken

In more detail, WebIDE pings the devices, and the devices respond, but WebIDE can't hear their replies anymore.

Comment 1

[J. Ryan Stinnett [:jryans] (Use needinfo, replies may be slow)]

The only workaround I've seen so far is to restart Firefox.

Maybe we can detect the interface change as we do now for b2g.

Comment 2

[J. Ryan Stinnett [:jryans] (Use needinfo, replies may be slow)]

Also, if you replug the non-WiFi interface (without restarting), it works again.

Comment 3

[Panos Astithas (he/him) [:past] (please ni?)]

Just guessing, but unplugging the Ethernet cable doesn't remove the interface and presumably the assigned addresses and routing table entries. Perhaps you need to re-initialize the discovery process every time an interface change is detected.

Comment 4

[Julian Descottes [:jdescottes]]

About:debugging bug triage. Filter on TRIAGE-JD201705

Temporarily setting P3 to bugs migrated from webide to cleanup the triage for about:debugging.

Comment 5

[:Harald Kirschner :digitarald]

Blocking M1, as this helps to make wifi more reliable.