Support strict mode private DNS on VPNs that provide Internet.
Currently, strict mode private DNS does not work on VPNs because
NetworkMonitor does not validate VPNs. When a VPN connects, it
immediately transitions to ValidatedState, skipping private DNS
This change makes NetworkMonitor perform private DNS hostname
resolution and evaluation even on VPNs.
In order to ensure that the system always immediately switches to
the VPN as soon as it connects, remove the unvalidated penalty
for VPN networks. This ensures that the VPN score is always 101
and the VPN always outscores other networks as soon as it
connects. Previously, it would only outscore other networks
when no-op validation completed.
Backport of 414b8c8b1ce8ae2ad6ef95c1ffba19062077d3e6.
Test: atest FrameworksNetTests
Test: manually ran a VPN with private DNS in strict mode
Test: atest android.net.cts.ConnectivityManagerTest com.android.cts.net.HostsideVpnTests
(cherry picked from commit 029d9ea11921b7ca5652d24a9563b66c2b70fafc)
5 files changed