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Merge pull request #158 from safing/fix/no-extra-section-dns-response

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Fix second write when responding with extra section
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Daniel 2020-09-25 11:35:11 +02:00 • committed by GitHub
commit 03830b4ea7
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2 changed files with 3 additions and 3 deletions
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2
nameserver/response.go
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@ -53,7 +53,7 @@ func writeDNSResponse(w dns.ResponseWriter, m *dns.Msg) (err error) {
}() }()
err = w.WriteMsg(m) err = w.WriteMsg(m)
if err == nil { if err != nil {
// If we receive an error we might have exceeded the message size with all // If we receive an error we might have exceeded the message size with all
// our extra information records. Retry again without the extra section. // our extra information records. Retry again without the extra section.
m.Extra = nil m.Extra = nil

4
resolver/resolve.go
View file

@ -309,7 +309,7 @@ retry:
} }
} }
func resolveAndCache(ctx context.Context, q *Query, oldCache *RRCache) (rrCache *RRCache, err error) { //nolint:gocognit func resolveAndCache(ctx context.Context, q *Query, oldCache *RRCache) (rrCache *RRCache, err error) { //nolint:gocognit,gocyclo
// get resolvers // get resolvers
resolvers, tryAll := GetResolversInScope(ctx, q) resolvers, tryAll := GetResolversInScope(ctx, q)
if len(resolvers) == 0 { if len(resolvers) == 0 {
@ -377,7 +377,7 @@ resolveLoop:
// Defensive: This should normally not happen. // Defensive: This should normally not happen.
continue continue
} }
// Check if request suceeded and whether we should try another resolver. // Check if request succeeded and whether we should try another resolver.
if rrCache.RCode != dns.RcodeSuccess && tryAll { if rrCache.RCode != dns.RcodeSuccess && tryAll {
continue continue
} }