Portal helper's URI is not configurable
Currently the URI that the portal helper hits is hardcoded to nmcheck.gnome.org
.
Network Manager allows configuring this via a uri
key in the connectivity
group of its configuration file. It seems reasonable for Shell to support doing the same thing.
If we were to propose a patch to fetch this value from NM (would require new API to expose this value there I think) and use it in Shell - keeping nmcheck.gnome.org
as default - would it be accepted?