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Improve support for DNS-SD and fall back to cached data for non-ICANN queries

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Daniel 2022-05-24 11:21:11 +02:00
parent 49e79fe3fd
commit 9a89f65027
6 changed files with 211 additions and 28 deletions
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11
resolver/resolver-env.go
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@ -128,7 +128,7 @@ func (er *envResolverConn) makeRRCache(q *Query, answers []dns.RR) *RRCache {
// Disable caching, as the env always has the raw data available.
q.NoCaching = true
return &RRCache{
rrCache := &RRCache{
Domain: q.FQDN,
Question: q.QType,
RCode: dns.RcodeSuccess,
@ -136,6 +136,10 @@ func (er *envResolverConn) makeRRCache(q *Query, answers []dns.RR) *RRCache {
Extra: []dns.RR{internalSpecialUseComment}, // Always add comment about this TLD.
Resolver: envResolver.Info.Copy(),
}
if len(rrCache.Answer) == 0 {
rrCache.RCode = dns.RcodeNameError
}
return rrCache
}
func (er *envResolverConn) ReportFailure() {}
@ -145,3 +149,8 @@ func (er *envResolverConn) IsFailing() bool {
}
func (er *envResolverConn) ResetFailure() {}
// QueryPortmasterEnv queries the environment resolver directly.
func QueryPortmasterEnv(ctx context.Context, q *Query) (*RRCache, error) {
return envResolver.Conn.Query(ctx, q)
}