Add WebSocketPreConnectGatewayEvent

Author: MrPowerGamerBR

src/main/java/net/dv8tion/jda/api/events/WebSocketPreConnectGatewayEvent.java

@@ -0,0 +1,42 @@
+/*
+ * Copyright 2015 Austin Keener, Michael Ritter, Florian Spieß, and the JDA contributors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package net.dv8tion.jda.api.events;
+
+import net.dv8tion.jda.api.JDA;
+import net.dv8tion.jda.internal.requests.WebSocketClient;
+
+import javax.annotation.Nonnull;
+
+/**
+ * Called before a WebSocket connects to the gateway
+ */
+public class WebSocketPreConnectGatewayEvent extends Event
+{
+    private final WebSocketClient client;
+
+    public WebSocketPreConnectGatewayEvent(@Nonnull JDA api, @Nonnull WebSocketClient client)
+    {
+        super(api);
+        this.client = client;
+    }
+
+    @Nonnull
+    public WebSocketClient getClient()
+    {
+        return client;
+    }
+}

src/main/java/net/dv8tion/jda/api/hooks/ListenerAdapter.java

@@ -132,6 +132,7 @@ public void onGenericEvent(@Nonnull GenericEvent event) {}
     public void onGenericUpdate(@Nonnull UpdateEvent<?, ?> event) {}
     public void onRawGateway(@Nonnull RawGatewayEvent event) {}
     public void onPreProcessedRawGateway(@Nonnull PreProcessedRawGatewayEvent event) {}
+    public void onWebSocketPreConnectGateway(@Nonnull WebSocketPreConnectGatewayEvent event) {}
     public void onGatewayPing(@Nonnull GatewayPingEvent event) {}
 
     //Session Events

src/main/java/net/dv8tion/jda/internal/requests/WebSocketClient.java

@@ -30,6 +30,7 @@
 import net.dv8tion.jda.api.events.ExceptionEvent;
 import net.dv8tion.jda.api.events.PreProcessedRawGatewayEvent;
 import net.dv8tion.jda.api.events.RawGatewayEvent;
+import net.dv8tion.jda.api.events.WebSocketPreConnectGatewayEvent;
 import net.dv8tion.jda.api.events.session.*;
 import net.dv8tion.jda.api.exceptions.ParsingException;
 import net.dv8tion.jda.api.managers.AudioManager;
@@ -396,6 +397,9 @@ protected synchronized void connect()
             throw new RejectedExecutionException("JDA is shutdown!");
         initiating = true;
 
+        WebSocketPreConnectGatewayEvent event = new WebSocketPreConnectGatewayEvent(api, this);
+        api.handleEvent(event);
+
         try
         {
             String gatewayUrl = resumeUrl != null ? resumeUrl : api.getGatewayUrl();