KCauldron-minecraft-server/patches/net/minecraft/server/network/NetHandlerHandshakeTCP.java.patch

--- ../src-base/minecraft/net/minecraft/server/network/NetHandlerHandshakeTCP.java
+++ ../src-work/minecraft/net/minecraft/server/network/NetHandlerHandshakeTCP.java
@@ -3,6 +3,7 @@
 import cpw.mods.fml.common.FMLCommonHandler;
 import io.netty.util.concurrent.GenericFutureListener;
 import net.minecraft.network.EnumConnectionState;
+import net.minecraft.network.INetHandler;
 import net.minecraft.network.NetworkManager;
 import net.minecraft.network.handshake.INetHandlerHandshakeServer;
 import net.minecraft.network.handshake.client.C00Handshake;
@@ -11,8 +12,24 @@
 import net.minecraft.util.ChatComponentText;
 import net.minecraft.util.IChatComponent;
 
+
+// CraftBukkit start
+import java.net.InetAddress;
+import java.util.HashMap;
+// CraftBukkit end
+// Spigot start
+import com.mojang.authlib.properties.Property;
+import com.mojang.util.UUIDTypeAdapter;
+// Spigot end
+
 public class NetHandlerHandshakeTCP implements INetHandlerHandshakeServer
 {
+    private static final com.google.gson.Gson gson = new com.google.gson.Gson(); // Spigot
+    // CraftBukkit start
+    private static final HashMap<InetAddress, Long> throttleTracker = new HashMap<InetAddress, Long>();
+    private static int throttleCounter = 0;
+    // CraftBukkit end
+
     private final MinecraftServer field_147387_a;
     private final NetworkManager field_147386_b;
     private static final String __OBFID = "CL_00001456";
@@ -39,6 +56,52 @@
                 this.field_147386_b.setConnectionState(EnumConnectionState.LOGIN);
                 ChatComponentText chatcomponenttext;
 
+                // CraftBukkit start
+                try
+                {
+                    long currentTime = System.currentTimeMillis();
+                    long connectionThrottle = MinecraftServer.getServer().server.getConnectionThrottle();
+                    InetAddress address = ((java.net.InetSocketAddress) this.field_147386_b.getSocketAddress()).getAddress();
+
+                    synchronized (throttleTracker)
+                    {
+                        if (throttleTracker.containsKey(address) && !"127.0.0.1".equals(address.getHostAddress()) && currentTime - throttleTracker.get(address) < connectionThrottle)
+                        {
+                            throttleTracker.put(address, currentTime);
+                            chatcomponenttext = new ChatComponentText("Connection throttled! Please wait before reconnecting.");
+                            this.field_147386_b.scheduleOutboundPacket(new S00PacketDisconnect(chatcomponenttext), new GenericFutureListener[0]);
+                            this.field_147386_b.closeChannel(chatcomponenttext); // Should be close
+                            return;
+                        }
+
+                        throttleTracker.put(address, currentTime);
+                        throttleCounter++;
+
+                        if (throttleCounter > 200)
+                        {
+                            throttleCounter = 0;
+                            // Cleanup stale entries
+                            java.util.Iterator iter = throttleTracker.entrySet().iterator();
+
+                            while (iter.hasNext())
+                            {
+                                java.util.Map.Entry<InetAddress, Long> entry = (java.util.Map.Entry) iter.next();
+
+                                if (entry.getValue() > connectionThrottle)
+                                {
+                                    iter.remove();
+                                }
+                            }
+                        }
+                    }
+                }
+                catch (Throwable t)
+                {
+                    org.apache.logging.log4j.LogManager.getLogger().debug("Failed to check connection throttle", t);
+                }
+
+                // CraftBukkit end
+
                 if (p_147383_1_.func_149595_d() > 5)
                 {
                     chatcomponenttext = new ChatComponentText("Outdated server! I\'m still on 1.7.10");
@@ -54,6 +117,33 @@
                 else
                 {
                     this.field_147386_b.setNetHandler(new NetHandlerLoginServer(this.field_147387_a, this.field_147386_b));
+
+                    // Spigot Start
+                    if (org.spigotmc.SpigotConfig.bungee)
+                    {
+                        String[] split = p_147383_1_.field_149598_b.split("\00");
+
+                        if (split.length == 3 || split.length == 4)
+                        {
+                            p_147383_1_.field_149598_b = split[0];
+                            field_147386_b.socketAddress = new java.net.InetSocketAddress(split[1], ((java.net.InetSocketAddress) field_147386_b.getSocketAddress()).getPort());
+                            field_147386_b.spoofedUUID = UUIDTypeAdapter.fromString( split[2] );
+                        }
+                        else
+                        {
+                            chatcomponenttext = new ChatComponentText("If you wish to use IP forwarding, please enable it in your BungeeCord config as well!");
+                            this.field_147386_b.scheduleOutboundPacket(new S00PacketDisconnect(chatcomponenttext), new GenericFutureListener[0]);
+                            this.field_147386_b.closeChannel(chatcomponenttext);
+                            return;
+                        }
+
+                        if (split.length == 4)
+                        {
+                            field_147386_b.spoofedProfile = gson.fromJson(split[3], Property[].class);
+                        }
+                    }
+                    // Spigot End
+                    ((NetHandlerLoginServer) this.field_147386_b.getNetHandler()).hostname = p_147383_1_.field_149598_b + ":" + p_147383_1_.field_149599_c; // CraftBukkit - set hostname
                 }
 
                 break;