Added UDP check for cookies

zbalkan · zbalkan · commit 8a0384fba652 · 2026-02-19T14:05:56.000+02:00
diff --git a/DnsServerCore/Dns/DnsServer.cs b/DnsServerCore/Dns/DnsServer.cs
@@ -2564,7 +2564,8 @@ private async Task<DnsDatagram> ProcessRequestAsync(DnsDatagram request, IPEndPo
             }
 
             // DNS Cookies (RFC 7873)
-            if (request.EDNS != null &&
+            if (protocol == DnsTransportProtocol.Udp &&
+                request.EDNS != null &&
                 _cookieValidator != null)
             {
                 EDnsCookieOptionData cookie =

Original file line number	Diff line number	Diff line change
`@@ -2564,7 +2564,8 @@ private async Task<DnsDatagram> ProcessRequestAsync(DnsDatagram request, IPEndPo`
`2564`	`2564`	`}`
`2565`	`2565`
`2566`	`2566`	`// DNS Cookies (RFC 7873)`
`2567`		`- if (request.EDNS != null &&`
	`2567`	`+ if (protocol == DnsTransportProtocol.Udp &&`
	`2568`	`+ request.EDNS != null &&`
`2568`	`2569`	`_cookieValidator != null)`
`2569`	`2570`	`{`
`2570`	`2571`	`EDnsCookieOptionData cookie =`