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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
logpolicy/logpolicy.go
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@@ -711,7 +711,7 @@ func DialContext(ctx context.Context, netw, addr string) (net.Conn, error) {
dnsCache := &dnscache.Resolver{
Forward: dnscache.Get().Forward, // use default cache's forwarder
UseLastGood: true,
LookupIPFallback: dnsfallback.Lookup,
LookupIPFallback: dnsfallback.Lookup(log.Printf),
}
dialer := dnscache.Dialer(nd.DialContext, dnsCache)
c, err = dialer(ctx, netw, addr)