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DNS: Avoid panic on domain too long (#6207)

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Fixes https://github.com/XTLS/Xray-core/issues/6204
This commit is contained in:
Meow
2026-05-29 04:06:32 +08:00
committed by GitHub
parent 1cd7d25fec
commit a2cec2e580
6 changed files with 75 additions and 10 deletions
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app/dns/nameserver_udp.go
+13 -1
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@@ -161,7 +161,19 @@ func (s *ClassicNameServer) getCacheController() *CacheController {
func (s *ClassicNameServer) sendQuery(ctx context.Context, noResponseErrCh chan<- error, fqdn string, option dns_feature.IPOption) {
errors.LogInfo(ctx, s.Name(), " querying DNS for: ", fqdn)
reqs := buildReqMsgs(fqdn, option, s.newReqID, genEDNS0Options(s.clientIP, 0))
reqs, err := buildReqMsgs(fqdn, option, s.newReqID, genEDNS0Options(s.clientIP, 0))
if err != nil {
errors.LogErrorInner(ctx, err, "failed to build dns query for ", fqdn)
if noResponseErrCh != nil {
if option.IPv4Enable {
noResponseErrCh <- err
}
if option.IPv6Enable {
noResponseErrCh <- err
}
}
return
}
for _, req := range reqs {
udpReq := &udpDnsRequest{