Fix: dns not cache RcodeServerFailure
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0740d20ba0
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c4994d6429
1 changed files with 7 additions and 1 deletions
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@ -168,7 +168,13 @@ func (r *Resolver) batchExchange(clients []dnsClient, m *D.Msg) (msg *D.Msg, err
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for _, client := range clients {
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r := client
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fast.Go(func() (interface{}, error) {
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return r.ExchangeContext(ctx, m)
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m, err := r.ExchangeContext(ctx, m)
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if err != nil {
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return nil, err
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} else if m.Rcode == D.RcodeServerFailure {
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return nil, errors.New("server failure")
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}
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return m, nil
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})
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}
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