Issue setting DoH in web browser

Summary

It seems that custom DoH in browser (Bromite) doesn't work as expected.

A user reported that he couldn't set specific DoH URL in Browser->Settings->Privacy and Security->Use secure DNS->Choose another Provider->Custom

Example: https://9.9.9.9/dns-query is expected to work but returns an error

What is the expected correct behavior?

Custom DoH should be possible as explained in Bromite documentation.

Relevant logs (adb logcat)

Relevant screenshots

Workaround

Quad9 is part of the default DNS provider list. So the user as to select it in the drop down list to make it work.

Possible fixes

@rhunault @theimpulson

Edited May 07, 2021 by Romain Hunault