Add Request to HttpException.

src/Discord.Net.Core/Net/HttpException.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Net;
 
 namespace Discord.Net
@@ -8,11 +8,13 @@ namespace Discord.Net
         public HttpStatusCode HttpCode { get; }
         public int? DiscordCode { get; }
         public string Reason { get; }
+        public IRequest Request { get; }
 
-        public HttpException(HttpStatusCode httpCode, int? discordCode = null, string reason = null)
+        public HttpException(HttpStatusCode httpCode, IRequest request, int? discordCode = null, string reason = null)
             : base(CreateMessage(httpCode, discordCode, reason))
         {
             HttpCode = httpCode;
+            Request = request;
             DiscordCode = discordCode;
             Reason = reason;
         }

src/Discord.Net.Rest/Net/Queue/RequestQueueBucket.cs

@@ -86,7 +86,7 @@ namespace Discord.Net.Queue
                                 Debug.WriteLine($"[{id}] (!) 502");
 #endif
                                 if ((request.Options.RetryMode & RetryMode.Retry502) == 0)
-                                    throw new HttpException(HttpStatusCode.BadGateway, null);
+                                    throw new HttpException(HttpStatusCode.BadGateway, request, null);
 
                                 continue; //Retry
                             default:
@@ -106,7 +106,7 @@ namespace Discord.Net.Queue
                                     }
                                     catch { }
                                 }
-                                throw new HttpException(response.StatusCode, code, reason);
+                                throw new HttpException(response.StatusCode, request, code, reason);
                         }
                     }
                     else