Request gateway v4, support reconnects

src/Discord.Net.Net45/Discord.Net.csproj

@@ -199,8 +199,8 @@
     <Compile Include="..\Discord.Net\API\Client\GatewaySocket\Events\Ready.cs">
       <Link>API\Client\GatewaySocket\Events\Ready.cs</Link>
     </Compile>
-    <Compile Include="..\Discord.Net\API\Client\GatewaySocket\Events\Redirect.cs">
-      <Link>API\Client\GatewaySocket\Events\Redirect.cs</Link>
+    <Compile Include="..\Discord.Net\API\Client\GatewaySocket\Events\Reconnect.cs">
+      <Link>API\Client\GatewaySocket\Events\Reconnect.cs</Link>
     </Compile>
     <Compile Include="..\Discord.Net\API\Client\GatewaySocket\Events\Resumed.cs">
       <Link>API\Client\GatewaySocket\Events\Resumed.cs</Link>

src/Discord.Net/API/Client/GatewaySocket/Commands/Identify.cs

@@ -10,8 +10,6 @@ namespace Discord.API.Client.GatewaySocket
         object IWebSocketMessage.Payload => this;
         bool IWebSocketMessage.IsPrivate => false;
 
-        [JsonProperty("v")]
-        public int Version { get; set; }
         [JsonProperty("token")]
         public string Token { get; set; }
         [JsonProperty("properties")]

src/Discord.Net/API/Client/GatewaySocket/Events/Reconnect.cs

@@ -0,0 +1,6 @@
+using Newtonsoft.Json;
+
+namespace Discord.API.Client.GatewaySocket
+{
+    public class ReconnectEvent { }
+}

src/Discord.Net/API/Client/GatewaySocket/Events/Redirect.cs

@@ -1,10 +0,0 @@
-using Newtonsoft.Json;
-
-namespace Discord.API.Client.GatewaySocket
-{
-    public class RedirectEvent
-    {
-        [JsonProperty("url")]
-        public string Url { get; set; }
-    }
-}

src/Discord.Net/API/Client/GatewaySocket/OpCodes.cs

@@ -17,7 +17,7 @@
         /// <summary> C→S - Used to resume a connection after a redirect occurs. </summary>
         Resume = 6,
         /// <summary> C←S - Used to notify a client that they must reconnect to another gateway. </summary>
-        Redirect = 7,
+        Reconnect = 7,
         /// <summary> C→S - Used to request all members that were withheld by large_threshold </summary>
         RequestGuildMembers = 8
     }

src/Discord.Net/API/Client/Rest/Gateway.cs

@@ -6,13 +6,13 @@ namespace Discord.API.Client.Rest
     public class GatewayRequest : IRestRequest<GatewayResponse>
     {
         string IRestRequest.Method => "GET";
-        string IRestRequest.Endpoint => $"gateway";
+        string IRestRequest.Endpoint => $"gateway?encoding=json&v=4";
         object IRestRequest.Payload => null;
     }
-    
+
     public class GatewayResponse
-	{
-		[JsonProperty("url")]
-		public string Url { get; set; }
+    {
+        [JsonProperty("url")]
+        public string Url { get; set; }
     }
 }

src/Discord.Net/Net/WebSockets/GatewaySocket.cs

@@ -131,15 +131,10 @@ namespace Discord.Net.WebSockets
                         }
 					}
 					break;
-				case OpCodes.Redirect:
+				case OpCodes.Reconnect:
 					{
-						var payload = (msg.Payload as JToken).ToObject<RedirectEvent>(_serializer);
-						if (payload.Url != null)
-						{
-							Host = payload.Url;
-							Logger.Info("Redirected to " + payload.Url);
-							await Reconnect().ConfigureAwait(false);
-						}
+						var payload = (msg.Payload as JToken).ToObject<ReconnectEvent>(_serializer);
+						await Reconnect().ConfigureAwait(false);
 					}
 					break;
 				default:
@@ -159,7 +154,6 @@ namespace Discord.Net.WebSockets
             };
             var msg = new IdentifyCommand()
             {
-                Version = 3,
                 Token = token,
                 Properties = props, 
                 LargeThreshold = _config.LargeThreshold,