Custom NetKAN error message when blocked by CurseForge

Netkan/Sources/Curse/CurseApi.cs

@@ -1,4 +1,6 @@
-using System;
+using System;
+using System.Diagnostics.Eventing.Reader;
+using System.IO;
 using System.Net;
 using CKAN.NetKAN.Services;
 using log4net;
@@ -48,7 +50,24 @@ public static Uri ResolveRedirect(Uri url)
  HttpWebRequest request = (HttpWebRequest) WebRequest.Create(redirUrl);
  request.AllowAutoRedirect = false;
  request.UserAgent = Net.UserAgentString;
- HttpWebResponse response = (HttpWebResponse) request.GetResponse();
+
+ HttpWebResponse response;
+ try
+ {
+ response = (HttpWebResponse) request.GetResponse();
+ }
+ catch (WebException e)
+ {
+ if (e.Status == WebExceptionStatus.ProtocolError)
+ {
+ response = e.Response as HttpWebResponse;
+ if (response?.StatusCode == HttpStatusCode.Forbidden)
+ {
+ throw new Kraken("CKAN blocked by CurseForge");
+ }
+ }
+ throw;
+ }
  response.Close();
  while (response.Headers["Location"] != null)
  {