11b3ee6fec
golang.org/cl/37879 unintentionally changed the way NXDOMAIN errors were handled. Before that change, resolution would fail on the first NXDOMAIN error and return to the user. After that change, the next server would be consulted and resolution would fail only after all servers had been consulted. This change restores the old behavior. Go 10.10.2: BenchmarkGoLookupIP-12 10000 174883 ns/op 11450 B/op 163 allocs/op BenchmarkGoLookupIPNoSuchHost-12 3000 670140 ns/op 52189 B/op 544 allocs/op BenchmarkGoLookupIPWithBrokenNameServer-12 1 5002568137 ns/op 163792 B/op 375 allocs/op before this change: BenchmarkGoLookupIP-12 10000 165501 ns/op 8585 B/op 94 allocs/op BenchmarkGoLookupIPNoSuchHost-12 1000 1204117 ns/op 83661 B/op 674 allocs/op BenchmarkGoLookupIPWithBrokenNameServer-12 1 5002629186 ns/op 159128 B/op 275 allocs/op after this change: BenchmarkGoLookupIP-12 10000 158102 ns/op 8585 B/op 94 allocs/op BenchmarkGoLookupIPNoSuchHost-12 2000 645364 ns/op 42990 B/op 356 allocs/op BenchmarkGoLookupIPWithBrokenNameServer-12 1 5002163437 ns/op 159144 B/op 275 allocs/op Fixes #25336 Change-Id: I315cd70330d1f66e54ce5a189a61c99f095bc138 Reviewed-on: https://go-review.googlesource.com/113815 Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> |
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