From 993fe8459a89c780304c989cb0d36c82f305073b Mon Sep 17 00:00:00 2001
From: Alex Rad <37549748+lts-rad@users.noreply.github.com>
Date: Tue, 5 Apr 2022 10:21:10 -0700
Subject: [PATCH] Replies should include Authoritative flag set to true

```
chashell 300 IN A [SERVERIP]
c 300 IN NS chashell.[DOMAIN].
```

The chanserv unning at [SERVERIP] is an authoritative nameserver for chashell.[DOMAIN].

The message header reply should have the 'aa' (Authoritative) flag set. Without this flag set, a strict recursive nameserver may block replies from reaching the client. This was observed with DigitalOcean for example.
---
 cmd/server/chaserv.go | 1 +
 1 file changed, 1 insertion(+)

diff --git a/cmd/server/chaserv.go b/cmd/server/chaserv.go
index ad6e794..e2b4f63 100644
--- a/cmd/server/chaserv.go
+++ b/cmd/server/chaserv.go
@@ -199,6 +199,7 @@ func parseQuery(m *dns.Msg) {
 
 			rr, _ := dns.NewRR(fmt.Sprintf("%s TXT %s", q.Name, answer))
 			m.Answer = append(m.Answer, rr)
+			m.MsgHdr.Authoritative = true
 
 		}