snapweb URL display error msg "Forbidden" if IP address changed

[Darren Wu]

Test steps:
1. Unplug ethernet cable and make sure the IP address is not obtained.
2. Restart snapweb
   $ sudo systemctl restart snap.snapweb.snapweb.service
3. Plug ethernet cable and make sure the IP address is obtained.
4. Access snapweb, eg. http://xxx.xxx.xx.xx:4200

Expected result:
Can access snapweb interface.(At step4, it can access the URL completed)

Actual result:
Cannot browse URL and display the error msg of "Forbidden".

The snapweb version:
0.26.1

[Darren Wu (musicguitar)]

From the snapweb source code:
https://github.com/snapcore/snapweb/blob/master/cmd/snapweb/handlers.go#L374

snapweb would update the local network interfaces with allowNetwork ip when initURLHandlers() function, but it would run only one shot. It seems not update allowNetwork IP if interface IP address changed.

[Darren Wu (musicguitar)]

This bug sometimes happens when system boots up and snapweb service enabled faster than IP obtained.

[Roberto Mier Escandon (rmescandon)]

Fixed on snapweb 0.26-10 (300)