Cache permanent redirects

KSP-CKAN · May 31, 2021 · c8ba80a · c8ba80a
1 parent c76bef5
commit c8ba80a
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/Core/Net/Net.cs b/Core/Net/Net.cs
@@ -384,6 +384,11 @@ protected override WebRequest GetWebRequest(Uri address)
                     log.InfoFormat("Setting MIME type {0}", mimeType);
                     Headers.Add("Accept", mimeType);
                 }
+                if (permanentRedirects.TryGetValue(address, out Uri redirUri))
+                {
+                    // Obey a previously received permanent redirect
+                    address = redirUri;
+                }
                 var request = base.GetWebRequest(address);
                 if (request is HttpWebRequest hwr)
                 {
@@ -417,6 +422,7 @@ protected override WebResponse GetWebResponse(WebRequest request)
                             log.InfoFormat("Host mismatch, purging token for redirect");
                             Headers.Remove("Authorization");
                         }
+                        permanentRedirects.Add(request.RequestUri, redirUri);
                         return GetWebResponse(GetWebRequest(redirUri));
                     }
                 }
@@ -425,6 +431,7 @@ protected override WebResponse GetWebResponse(WebRequest request)
 
             private int    timeout;
             private string mimeType;
+            private Dictionary<Uri, Uri> permanentRedirects = new Dictionary<Uri, Uri>();
         }
 
         // HACK: The ancient WebClient doesn't support setting the request type to HEAD and WebRequest doesn't support