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DNS: Support returning upstream TTL to clients (#4526)

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Closes https://github.com/XTLS/Xray-core/issues/4527
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Meo597 2025-03-24 21:33:56 +08:00 • committed by GitHub
parent 2d3210e4b8
commit 4afe2d0cff
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24 changed files with 168 additions and 157 deletions
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6
app/dns/nameserver_local.go
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@ -21,14 +21,14 @@ type LocalNameServer struct {
const errEmptyResponse = "No address associated with hostname"
// QueryIP implements Server.
func (s *LocalNameServer) QueryIP(ctx context.Context, domain string, _ net.IP, option dns.IPOption, _ bool) (ips []net.IP, err error) {
func (s *LocalNameServer) QueryIP(ctx context.Context, domain string, _ net.IP, option dns.IPOption, _ bool) (ips []net.IP, ttl uint32, err error) {
option = ResolveIpOptionOverride(s.queryStrategy, option)
if !option.IPv4Enable && !option.IPv6Enable {
return nil, dns.ErrEmptyResponse
return nil, 0, dns.ErrEmptyResponse
}
start := time.Now()
ips, err = s.client.LookupIP(domain, option)
ips, ttl, err = s.client.LookupIP(domain, option)
if err != nil && strings.HasSuffix(err.Error(), errEmptyResponse) {
err = dns.ErrEmptyResponse