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Fix #706 - logging for resolveRDNS

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This commit is contained in:
Andrey Meshkov 2019-06-04 19:58:13 +03:00
parent 85046abb15
commit 64a4443d0c
1 changed files with 5 additions and 5 deletions
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10
dns.go
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@ -93,26 +93,26 @@ func resolveRDNS(ip string) string {
var err error
req.Question[0].Name, err = dns.ReverseAddr(ip)
if err != nil {
log.Error("dns.ReverseAddr: %s", err)
log.Debug("Error while calling dns.ReverseAddr(%s): %s", ip, err)
return ""
}
resp, err := dnsctx.upstream.Exchange(&req)
if err != nil {
log.Error("upstream.Exchange: %s", err)
log.Error("Error while making an rDNS lookup for %s: %s", ip, err)
return ""
}
if len(resp.Answer) != 1 {
log.Error("len(resp.Answer) != 1")
log.Debug("No answer for rDNS lookup of %s", ip)
return ""
}
ptr, ok := resp.Answer[0].(*dns.PTR)
if !ok {
log.Error("not a dns.PTR response")
log.Error("not a PTR response for %s", ip)
return ""
}
log.Tracef("PTR response: %s", ptr.String())
log.Tracef("PTR response for %s: %s", ip, ptr.String())
if strings.HasSuffix(ptr.Ptr, ".") {
ptr.Ptr = ptr.Ptr[:len(ptr.Ptr)-1]
}