Implement ServerDisconnectEvent. Wow so many server switch events.

api/src/main/java/net/md_5/bungee/api/event/ServerDisconnectEvent.java

@@ -0,0 +1,29 @@
+package net.md_5.bungee.api.event;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.EqualsAndHashCode;
+import lombok.NonNull;
+import lombok.ToString;
+import net.md_5.bungee.api.config.ServerInfo;
+import net.md_5.bungee.api.connection.ProxiedPlayer;
+import net.md_5.bungee.api.plugin.Event;
+
+@Data
+@AllArgsConstructor
+@ToString(callSuper = false)
+@EqualsAndHashCode(callSuper = false)
+public class ServerDisconnectEvent extends Event
+{
+
+    /**
+     * Player disconnecting from a server.
+     */
+    @NonNull
+    private final ProxiedPlayer player;
+    /**
+     * Server the player is disconnecting from.
+     */
+    @NonNull
+    private ServerInfo target;
+}

proxy/src/main/java/net/md_5/bungee/connection/DownstreamBridge.java

@@ -9,6 +9,7 @@ import lombok.RequiredArgsConstructor;
 import net.md_5.bungee.BungeeCord;
 import net.md_5.bungee.EntityMap;
 import net.md_5.bungee.ServerConnection;
+import net.md_5.bungee.api.event.ServerDisconnectEvent;
 import net.md_5.bungee.UserConnection;
 import net.md_5.bungee.Util;
 import net.md_5.bungee.api.ProxyServer;
@@ -69,6 +70,9 @@ public class DownstreamBridge extends PacketHandler
         {
             con.disconnect( bungee.getTranslation( "lost_connection" ) );
         }
+
+        ServerDisconnectEvent serverDisconnectEvent = new ServerDisconnectEvent( con, server.getInfo() );
+        bungee.getPluginManager().callEvent( serverDisconnectEvent );
     }
 
     @Override