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fix the edns version not correct when ttl is large e.g. 1day #20

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fix the edns version not correct when ttl is large e.g. 1day #20

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5 changes: 5 additions & 0 deletions client.go
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Original file line number Diff line number Diff line change
Expand Up @@ -202,6 +202,11 @@ func (c *Client) ExchangeWithResponseCheck(ctx context.Context, transport Transp
}
for _, recordList := range [][]dns.RR{response.Answer, response.Ns, response.Extra} {
for _, record := range recordList {
if record.Header().Rrtype == dns.TypeOPT {
// The Ttl field of the OPT record is used to store the extended RCode
// and the edns0 version number.
continue
}
record.Header().Ttl = uint32(timeToLive)
}
}
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