dns

commit 16fb0dea8a6bd2b750ffd7f706401125f18d222a
parent a7c06b85bf15297629c13f8aae6cf51c828119b2
Author: Oliver Lowe <o@olowe.co>
Date:   Fri, 17 Dec 2021 19:36:58 +1100

recursor: set more correct header bits in response

This is what quad9 and google's dns resolver do

Diffstat:
M
cmd/recursor/recursor.go
 | 
2
++

1 file changed, 2 insertions(+), 0 deletions(-)
diff --git a/cmd/recursor/recursor.go b/cmd/recursor/recursor.go
@@ -26,6 +26,7 @@ func handler(w dns.ResponseWriter, qmsg *dnsmessage.Message) {
 	var rmsg dnsmessage.Message
 	rmsg.Header.ID = qmsg.Header.ID
 	rmsg.Header.Response = true
+	rmsg.Header.RecursionAvailable = true
 	rmsg.Questions = qmsg.Questions
 
 	if reject, rc := shouldReject(qmsg); reject {
@@ -33,6 +34,7 @@ func handler(w dns.ResponseWriter, qmsg *dnsmessage.Message) {
 		w.WriteMsg(rmsg)
 		return
 	}
+	rmsg.RecursionDesired = true
 
 	q := qmsg.Questions[0]
 	cache.RLock()