Made a difference between a parsing error and a bad cookie

zbalkan · zbalkan · commit 9348e90057ae · 2026-02-19T14:07:54.000+02:00
diff --git a/DnsServerCore/Dns/DnsServer.cs b/DnsServerCore/Dns/DnsServer.cs
@@ -2577,7 +2577,7 @@ private async Task<DnsDatagram> ProcessRequestAsync(DnsDatagram request, IPEndPo
                 }
                 else
                 {
-                    if (!cookie.ServerCookie.IsEmpty && cookie.ServerCookie.Length > 0)
+                    if (!cookie.ServerCookie.IsEmpty && cookie.ServerCookie.Length > 8)
                     {
                         if (!_cookieValidator.Validate(
                             remoteEP.Address,

Original file line number	Diff line number	Diff line change
`@@ -2577,7 +2577,7 @@ private async Task<DnsDatagram> ProcessRequestAsync(DnsDatagram request, IPEndPo`
`2577`	`2577`	`}`
`2578`	`2578`	`else`
`2579`	`2579`	`{`
`2580`		`- if (!cookie.ServerCookie.IsEmpty && cookie.ServerCookie.Length > 0)`
	`2580`	`+ if (!cookie.ServerCookie.IsEmpty && cookie.ServerCookie.Length > 8)`
`2581`	`2581`	`{`
`2582`	`2582`	`if (!_cookieValidator.Validate(`
`2583`	`2583`	`remoteEP.Address,`