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net/dnsfallback: more explicitly pass through logf function

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Redoes the approach from #5550 and #7539 to explicitly pass in the logf
function, instead of having global state that can be overridden.

Signed-off-by: Mihai Parparita <mihai@tailscale.com>
This commit is contained in:
Mihai Parparita
2023-04-17 10:58:40 -07:00
committed by Mihai Parparita
parent 28cb1221ba
commit 9a655a1d58
8 changed files with 20 additions and 66 deletions
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2
control/controlhttp/client.go
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@@ -393,7 +393,7 @@ func (a *Dialer) tryURLUpgrade(ctx context.Context, u *url.URL, addr netip.Addr,
} else {
dns = &dnscache.Resolver{
Forward: dnscache.Get().Forward,
LookupIPFallback: dnsfallback.Lookup,
LookupIPFallback: dnsfallback.Lookup(a.logf),
UseLastGood: true,
Logf: a.Logf, // not a.logf method; we want to propagate nil-ness
}