Waterfall/Waterfall-Proxy-Patches/0003-1.7.x-Protocol-Patch.patch

From 0002b1f2ea298245dfa864b82cb41ebc23e96f73 Mon Sep 17 00:00:00 2001
From: Troy Frew <fuzzy_bot@arenaga.me>
Date: Tue, 15 Nov 2016 10:31:04 -0500
Subject: [PATCH] 1.7.x Protocol Patch


diff --git a/protocol/src/main/java/io/github/waterfallmc/travertine/protocol/MultiVersionPacketV17.java b/protocol/src/main/java/io/github/waterfallmc/travertine/protocol/MultiVersionPacketV17.java
new file mode 100644
index 00000000..90064112
--- /dev/null
+++ b/protocol/src/main/java/io/github/waterfallmc/travertine/protocol/MultiVersionPacketV17.java
@@ -0,0 +1,90 @@
+package io.github.waterfallmc.travertine.protocol;
+
+import com.google.common.base.Preconditions;
+import io.netty.buffer.ByteBuf;
+
+import net.md_5.bungee.protocol.DefinedPacket;
+import net.md_5.bungee.protocol.ProtocolConstants;
+
+public abstract class MultiVersionPacketV17 extends DefinedPacket
+{
+
+    protected void v17Read(ByteBuf buf, ProtocolConstants.Direction direction, int protocolVersion)
+    {
+        v17Read( buf );
+    }
+
+    @Override
+    public void read0(ByteBuf buf, ProtocolConstants.Direction direction, int protocolVersion)
+    {
+        switch ( protocolVersion )
+        {
+            case ProtocolConstants.MINECRAFT_1_7_2:
+            case ProtocolConstants.MINECRAFT_1_7_6:
+                v17Read(buf, direction, protocolVersion);
+                break;
+            default:
+                read(buf, direction, protocolVersion);
+                break;
+        }
+    }
+
+    protected void v17Write(ByteBuf buf, ProtocolConstants.Direction direction, int protocolVersion)
+    {
+        v17Write( buf );
+    }
+
+    @Override
+    public void write0(ByteBuf buf, ProtocolConstants.Direction direction, int protocolVersion)
+    {
+        switch ( protocolVersion )
+        {
+            case ProtocolConstants.MINECRAFT_1_7_2:
+            case ProtocolConstants.MINECRAFT_1_7_6:
+                v17Write(buf, direction, protocolVersion);
+                break;
+            default:
+                write(buf, direction, protocolVersion);
+                break;
+        }
+    }
+    protected void v17Read(ByteBuf buf)
+    {
+        throw new UnsupportedOperationException( "Packet must implement read method" );
+    }
+
+    protected void v17Write(ByteBuf buf)
+    {
+        throw new UnsupportedOperationException( "Packet must implement write method" );
+    }
+
+    public static void v17writeArray(byte[] b, ByteBuf buf, boolean allowExtended)
+    {
+        // (Integer.MAX_VALUE & 0x1FFF9A ) = 2097050 - Forge's current upper limit
+        if ( allowExtended )
+        {
+            Preconditions.checkArgument( b.length <= ( Integer.MAX_VALUE & 0x1FFF9A ), "Cannot send array longer than 2097050 (got %s bytes)", b.length );
+        } else
+        {
+            Preconditions.checkArgument( b.length <= Short.MAX_VALUE, "Cannot send array longer than Short.MAX_VALUE (got %s bytes)", b.length );
+        }
+        // Write a 2 or 3 byte number that represents the length of the packet. (3 byte "shorts" for Forge only)
+        // No vanilla packet should give a 3 byte packet, this method will still retain vanilla behaviour.
+        writeVarShort( buf, b.length );
+        buf.writeBytes( b );
+    }
+
+    public static byte[] v17readArray(ByteBuf buf)
+    {
+        // Read in a 2 or 3 byte number that represents the length of the packet. (3 byte "shorts" for Forge only)
+        // No vanilla packet should give a 3 byte packet, this method will still retain vanilla behaviour.
+        int len = readVarShort( buf );
+
+        // (Integer.MAX_VALUE & 0x1FFF9A ) = 2097050 - Forge's current upper limit
+        Preconditions.checkArgument( len <= ( Integer.MAX_VALUE & 0x1FFF9A ), "Cannot receive array longer than 2097050 (got %s bytes)", len );
+
+        byte[] ret = new byte[ len ];
+        buf.readBytes( ret );
+        return ret;
+    }
+}
diff --git a/protocol/src/main/java/net/md_5/bungee/protocol/DefinedPacket.java b/protocol/src/main/java/net/md_5/bungee/protocol/DefinedPacket.java
index 28a3efde..6e811930 100644
--- a/protocol/src/main/java/net/md_5/bungee/protocol/DefinedPacket.java
+++ b/protocol/src/main/java/net/md_5/bungee/protocol/DefinedPacket.java
@@ -206,6 +206,11 @@ public abstract class DefinedPacket
         read( buf );
     }
 
+    public void read0(ByteBuf buf, ProtocolConstants.Direction direction, int protocolVersion)
+    {
+        read( buf, direction, protocolVersion );
+    }
+
     public void write(ByteBuf buf)
     {
         throw new UnsupportedOperationException( "Packet must implement write method" );
@@ -216,6 +221,11 @@ public abstract class DefinedPacket
         write( buf );
     }
 
+    public void write0(ByteBuf buf, ProtocolConstants.Direction direction, int protocolVersion)
+    {
+        write( buf, direction, protocolVersion );
+    }
+
     public abstract void handle(AbstractPacketHandler handler) throws Exception;
 
     @Override
diff --git a/protocol/src/main/java/net/md_5/bungee/protocol/MinecraftDecoder.java b/protocol/src/main/java/net/md_5/bungee/protocol/MinecraftDecoder.java
index 9e9ea49c..75b0f8a9 100644
--- a/protocol/src/main/java/net/md_5/bungee/protocol/MinecraftDecoder.java
+++ b/protocol/src/main/java/net/md_5/bungee/protocol/MinecraftDecoder.java
@@ -5,10 +5,11 @@ import io.netty.buffer.ByteBufUtil;
 import io.netty.channel.ChannelHandlerContext;
 import io.netty.handler.codec.DecoderException;
 import io.netty.handler.codec.MessageToMessageDecoder;
-import java.util.List;
 import lombok.AllArgsConstructor;
 import lombok.Setter;
 
+import java.util.List;
+
 @AllArgsConstructor
 public class MinecraftDecoder extends MessageToMessageDecoder<ByteBuf>
 {
@@ -43,7 +44,7 @@ public class MinecraftDecoder extends MessageToMessageDecoder<ByteBuf>
             if ( packet != null )
             {
                 packetTypeInfo = packet.getClass();
-                packet.read( in, prot.getDirection(), protocolVersion );
+                packet.read0( in, prot.getDirection(), protocolVersion );
 
                 if ( in.isReadable() )
                 {
diff --git a/protocol/src/main/java/net/md_5/bungee/protocol/MinecraftEncoder.java b/protocol/src/main/java/net/md_5/bungee/protocol/MinecraftEncoder.java
index d4b03843..9aac7ca9 100644
--- a/protocol/src/main/java/net/md_5/bungee/protocol/MinecraftEncoder.java
+++ b/protocol/src/main/java/net/md_5/bungee/protocol/MinecraftEncoder.java
@@ -21,6 +21,6 @@ public class MinecraftEncoder extends MessageToByteEncoder<DefinedPacket>
     {
         Protocol.DirectionData prot = ( server ) ? protocol.TO_CLIENT : protocol.TO_SERVER;
         DefinedPacket.writeVarInt( prot.getId( msg.getClass(), protocolVersion ), out );
-        msg.write( out, prot.getDirection(), protocolVersion );
+        msg.write0( out, prot.getDirection(), protocolVersion );
     }
 }
diff --git a/protocol/src/main/java/net/md_5/bungee/protocol/Protocol.java b/protocol/src/main/java/net/md_5/bungee/protocol/Protocol.java
index d1320698..961e95e1 100644
--- a/protocol/src/main/java/net/md_5/bungee/protocol/Protocol.java
+++ b/protocol/src/main/java/net/md_5/bungee/protocol/Protocol.java
@@ -391,6 +391,8 @@ public enum Protocol
         private final TIntObjectMap<List<Integer>> linkedProtocols = new TIntObjectHashMap<>();
         {
             linkedProtocols.put( ProtocolConstants.MINECRAFT_1_8, Arrays.asList(
+                    ProtocolConstants.MINECRAFT_1_7_2,
+                    ProtocolConstants.MINECRAFT_1_7_6,
                     ProtocolConstants.MINECRAFT_1_9,
                     ProtocolConstants.MINECRAFT_1_12,
                     ProtocolConstants.MINECRAFT_1_13
@@ -448,7 +450,11 @@ public enum Protocol
             }
             if ( !hasPacket(id, supportsForge) )
             {
-                throw new BadPacketException( "Packet with id " + id + " outside of range " );
+                if ( ProtocolConstants.isBeforeOrEq( version, ProtocolConstants.MINECRAFT_1_7_6 ) ) {
+                    return null;
+                } else {
+                    throw new BadPacketException( "Packet with id " + id + " outside of range " );
+                }
             }
 
             Constructor<? extends DefinedPacket> constructor = protocolData.packetConstructors[id];
diff --git a/protocol/src/main/java/net/md_5/bungee/protocol/ProtocolConstants.java b/protocol/src/main/java/net/md_5/bungee/protocol/ProtocolConstants.java
index d9a3c7e5..67f2976e 100644
--- a/protocol/src/main/java/net/md_5/bungee/protocol/ProtocolConstants.java
+++ b/protocol/src/main/java/net/md_5/bungee/protocol/ProtocolConstants.java
@@ -6,6 +6,8 @@ import java.util.List;
 public class ProtocolConstants
 {
 
+    public static final int MINECRAFT_1_7_2 = 4;
+    public static final int MINECRAFT_1_7_6 = 5;
     public static final int MINECRAFT_1_8 = 47;
     public static final int MINECRAFT_1_9 = 107;
     public static final int MINECRAFT_1_9_1 = 108;
@@ -21,6 +23,7 @@ public class ProtocolConstants
     public static final int MINECRAFT_1_13_1 = 401;
     public static final int MINECRAFT_1_13_2 = 404;
     public static final List<String> SUPPORTED_VERSIONS = Arrays.asList(
+            "1.7.x",
             "1.8.x",
             "1.9.x",
             "1.10.x",
@@ -29,6 +32,8 @@ public class ProtocolConstants
             "1.13.x"
     );
     public static final List<Integer> SUPPORTED_VERSION_IDS = Arrays.asList(
+            ProtocolConstants.MINECRAFT_1_7_2,
+            ProtocolConstants.MINECRAFT_1_7_6,
             ProtocolConstants.MINECRAFT_1_8,
             ProtocolConstants.MINECRAFT_1_9,
             ProtocolConstants.MINECRAFT_1_9_1,
diff --git a/protocol/src/main/java/net/md_5/bungee/protocol/Varint21FrameDecoder.java b/protocol/src/main/java/net/md_5/bungee/protocol/Varint21FrameDecoder.java
index aef9fc37..f2c3b84f 100644
--- a/protocol/src/main/java/net/md_5/bungee/protocol/Varint21FrameDecoder.java
+++ b/protocol/src/main/java/net/md_5/bungee/protocol/Varint21FrameDecoder.java
@@ -7,10 +7,12 @@ import io.netty.handler.codec.ByteToMessageDecoder;
 import io.netty.handler.codec.CorruptedFrameException;
 
 import java.util.List;
+import java.util.concurrent.atomic.AtomicLong;
 
 public class Varint21FrameDecoder extends ByteToMessageDecoder
 {
 
+    private AtomicLong lastEmptyPacket = new AtomicLong(0); // Travertine
     private static boolean DIRECT_WARNING;
     // Waterfall start
     private boolean allowEmptyPackets;
@@ -42,7 +44,15 @@ public class Varint21FrameDecoder extends ByteToMessageDecoder
                 // Waterfall end
                 if ( length == 0 && !allowEmptyPackets) // Waterfall
                 {
-                    throw new CorruptedFrameException( "Empty Packet!" );
+                    // Travertine start - vanilla 1.7 client sometimes sends empty packets.
+                    long currentTime = System.currentTimeMillis();
+                    long lastEmptyPacket = this.lastEmptyPacket.getAndSet(currentTime);
+
+                    if (currentTime - lastEmptyPacket < 50L)
+                    {
+                        throw new CorruptedFrameException( "Too many empty packets" );
+                    }
+                    // Travertine end
                 }
 
                 if ( in.readableBytes() < length )
diff --git a/protocol/src/main/java/net/md_5/bungee/protocol/packet/Chat.java b/protocol/src/main/java/net/md_5/bungee/protocol/packet/Chat.java
index 95ad39b7..1f78125a 100644
--- a/protocol/src/main/java/net/md_5/bungee/protocol/packet/Chat.java
+++ b/protocol/src/main/java/net/md_5/bungee/protocol/packet/Chat.java
@@ -1,6 +1,6 @@
 package net.md_5.bungee.protocol.packet;
 
-import net.md_5.bungee.protocol.DefinedPacket;
+import io.github.waterfallmc.travertine.protocol.MultiVersionPacketV17;
 import io.netty.buffer.ByteBuf;
 import lombok.AllArgsConstructor;
 import lombok.Data;
@@ -13,7 +13,7 @@ import net.md_5.bungee.protocol.ProtocolConstants;
 @NoArgsConstructor
 @AllArgsConstructor
 @EqualsAndHashCode(callSuper = false)
-public class Chat extends DefinedPacket
+public class Chat extends MultiVersionPacketV17
 {
 
     private String message;
@@ -24,6 +24,14 @@ public class Chat extends DefinedPacket
         this( message, (byte) 0 );
     }
 
+    // Travertine start
+    @Override
+    public void v17Read(ByteBuf buf, ProtocolConstants.Direction direction, int protocolVersion)
+    {
+        message = readString( buf );
+    }
+    // Travertine end
+
     @Override
     public void read(ByteBuf buf, ProtocolConstants.Direction direction, int protocolVersion)
     {
@@ -34,6 +42,14 @@ public class Chat extends DefinedPacket
         }
     }
 
+    // Travertine start
+    @Override
+    public void v17Write(ByteBuf buf, ProtocolConstants.Direction direction, int protocolVersion)
+    {
+        writeString( message, buf );
+    }
+    // Travertine end
+
     @Override
     public void write(ByteBuf buf, ProtocolConstants.Direction direction, int protocolVersion)
     {
diff --git a/protocol/src/main/java/net/md_5/bungee/protocol/packet/ClientSettings.java b/protocol/src/main/java/net/md_5/bungee/protocol/packet/ClientSettings.java
index 5c79727c..431b2eb8 100644
--- a/protocol/src/main/java/net/md_5/bungee/protocol/packet/ClientSettings.java
+++ b/protocol/src/main/java/net/md_5/bungee/protocol/packet/ClientSettings.java
@@ -1,5 +1,6 @@
 package net.md_5.bungee.protocol.packet;
 
+import io.github.waterfallmc.travertine.protocol.MultiVersionPacketV17;
 import net.md_5.bungee.protocol.DefinedPacket;
 import io.netty.buffer.ByteBuf;
 import lombok.AllArgsConstructor;
@@ -13,7 +14,7 @@ import net.md_5.bungee.protocol.ProtocolConstants;
 @NoArgsConstructor
 @AllArgsConstructor
 @EqualsAndHashCode(callSuper = false)
-public class ClientSettings extends DefinedPacket
+public class ClientSettings extends MultiVersionPacketV17
 {
 
     private String locale;
@@ -24,6 +25,19 @@ public class ClientSettings extends DefinedPacket
     private byte skinParts;
     private int mainHand;
 
+    // Travertine start
+    @Override
+    public void v17Read(ByteBuf buf, ProtocolConstants.Direction direction, int protocolVersion)
+    {
+        locale = readString( buf );
+        viewDistance = buf.readByte();
+        chatFlags = buf.readUnsignedByte();
+        chatColours = buf.readBoolean();
+        skinParts = buf.readByte();
+        difficulty = buf.readByte();
+    }
+    // Travertine end
+
     @Override
     public void read(ByteBuf buf, ProtocolConstants.Direction direction, int protocolVersion)
     {
@@ -58,6 +72,19 @@ public class ClientSettings extends DefinedPacket
         }
     }
 
+    // Travertine start
+    @Override
+    public void v17Write(ByteBuf buf, ProtocolConstants.Direction direction, int protocolVersion)
+    {
+        writeString( locale, buf );
+        buf.writeByte( viewDistance );
+        buf.writeByte( chatFlags );
+        buf.writeBoolean( chatColours );
+        buf.writeByte( skinParts );
+        buf.writeByte( difficulty );
+    }
+    // Travertine end
+
     @Override
     public void handle(AbstractPacketHandler handler) throws Exception
     {
diff --git a/protocol/src/main/java/net/md_5/bungee/protocol/packet/EncryptionRequest.java b/protocol/src/main/java/net/md_5/bungee/protocol/packet/EncryptionRequest.java
index a29524ca..8d9f4ccb 100644
--- a/protocol/src/main/java/net/md_5/bungee/protocol/packet/EncryptionRequest.java
+++ b/protocol/src/main/java/net/md_5/bungee/protocol/packet/EncryptionRequest.java
@@ -1,25 +1,35 @@
 package net.md_5.bungee.protocol.packet;
 
+import io.github.waterfallmc.travertine.protocol.MultiVersionPacketV17;
 import io.netty.buffer.ByteBuf;
 import lombok.AllArgsConstructor;
 import lombok.Data;
 import lombok.EqualsAndHashCode;
 import lombok.NoArgsConstructor;
 import net.md_5.bungee.protocol.AbstractPacketHandler;
-import net.md_5.bungee.protocol.DefinedPacket;
 import net.md_5.bungee.protocol.ProtocolConstants;
 
 @Data
 @NoArgsConstructor
 @AllArgsConstructor
 @EqualsAndHashCode(callSuper = false)
-public class EncryptionRequest extends DefinedPacket
+public class EncryptionRequest extends MultiVersionPacketV17
 {
 
     private String serverId;
     private byte[] publicKey;
     private byte[] verifyToken;
 
+    // Travertine start
+    @Override
+    public void v17Read(ByteBuf buf, ProtocolConstants.Direction direction, int protocolVersion)
+    {
+        serverId = readString( buf );
+        publicKey = v17readArray( buf );
+        verifyToken = v17readArray( buf );
+    }
+    // Travertine end
+
     @Override
     public void read(ByteBuf buf, ProtocolConstants.Direction direction, int protocolVersion)
     {
@@ -28,6 +38,16 @@ public class EncryptionRequest extends DefinedPacket
         verifyToken = readArray( buf );
     }
 
+    // Travertine start
+    @Override
+    public void v17Write(ByteBuf buf, ProtocolConstants.Direction direction, int protocolVersion)
+    {
+        writeString( serverId, buf );
+        v17writeArray( publicKey, buf, false );
+        v17writeArray( verifyToken, buf, false );
+    }
+    // Travertine end
+
     @Override
     public void write(ByteBuf buf, ProtocolConstants.Direction direction, int protocolVersion)
     {
diff --git a/protocol/src/main/java/net/md_5/bungee/protocol/packet/EncryptionResponse.java b/protocol/src/main/java/net/md_5/bungee/protocol/packet/EncryptionResponse.java
index 06676e42..19a85492 100644
--- a/protocol/src/main/java/net/md_5/bungee/protocol/packet/EncryptionResponse.java
+++ b/protocol/src/main/java/net/md_5/bungee/protocol/packet/EncryptionResponse.java
@@ -1,6 +1,6 @@
 package net.md_5.bungee.protocol.packet;
 
-import net.md_5.bungee.protocol.DefinedPacket;
+import io.github.waterfallmc.travertine.protocol.MultiVersionPacketV17;
 import io.netty.buffer.ByteBuf;
 import lombok.AllArgsConstructor;
 import lombok.Data;
@@ -13,12 +13,21 @@ import net.md_5.bungee.protocol.ProtocolConstants;
 @NoArgsConstructor
 @AllArgsConstructor
 @EqualsAndHashCode(callSuper = false)
-public class EncryptionResponse extends DefinedPacket
+public class EncryptionResponse extends MultiVersionPacketV17
 {
 
     private byte[] sharedSecret;
     private byte[] verifyToken;
 
+    // Travertine start
+    @Override
+    public void v17Read(ByteBuf buf, ProtocolConstants.Direction direction, int protocolVersion)
+    {
+        sharedSecret = v17readArray( buf );
+        verifyToken = v17readArray( buf );
+    }
+    // Travertine end
+
     @Override
     public void read(ByteBuf buf, ProtocolConstants.Direction direction, int protocolVersion)
     {
@@ -26,6 +35,15 @@ public class EncryptionResponse extends DefinedPacket
         verifyToken = readArray( buf, 128 );
     }
 
+    // Travertine start
+    @Override
+    public void v17Write(ByteBuf buf, ProtocolConstants.Direction direction, int protocolVersion)
+    {
+        v17writeArray( sharedSecret, buf, false );
+        v17writeArray( verifyToken, buf, false );
+    }
+    // Travertine end
+
     @Override
     public void write(ByteBuf buf, ProtocolConstants.Direction direction, int protocolVersion)
     {
diff --git a/protocol/src/main/java/net/md_5/bungee/protocol/packet/EntityEffect.java b/protocol/src/main/java/net/md_5/bungee/protocol/packet/EntityEffect.java
index d11a9ea9..07fc21b6 100644
--- a/protocol/src/main/java/net/md_5/bungee/protocol/packet/EntityEffect.java
+++ b/protocol/src/main/java/net/md_5/bungee/protocol/packet/EntityEffect.java
@@ -1,18 +1,19 @@
 package net.md_5.bungee.protocol.packet;
 
+import io.github.waterfallmc.travertine.protocol.MultiVersionPacketV17;
 import io.netty.buffer.ByteBuf;
 import lombok.AllArgsConstructor;
 import lombok.Data;
 import lombok.EqualsAndHashCode;
 import lombok.NoArgsConstructor;
 import net.md_5.bungee.protocol.AbstractPacketHandler;
-import net.md_5.bungee.protocol.DefinedPacket;
+import net.md_5.bungee.protocol.ProtocolConstants;
 
 @Data
 @NoArgsConstructor
 @AllArgsConstructor
 @EqualsAndHashCode(callSuper = false)
-public class EntityEffect extends DefinedPacket {
+public class EntityEffect extends MultiVersionPacketV17 {
 
     private int entityId;
     private int effectId;
@@ -20,6 +21,14 @@ public class EntityEffect extends DefinedPacket {
     private int duration;
     private boolean hideParticles;
 
+    @Override
+    protected void v17Read(ByteBuf buf, ProtocolConstants.Direction direction, int protocolVersion) {
+        this.entityId = buf.readInt();
+        this.effectId = buf.readUnsignedByte();
+        this.amplifier = buf.readUnsignedByte();
+        this.duration = buf.readShort();
+    }
+
     @Override
     public void read(ByteBuf buf) {
         this.entityId = readVarInt(buf);
@@ -29,6 +38,14 @@ public class EntityEffect extends DefinedPacket {
         this.hideParticles = buf.readBoolean();
     }
 
+    @Override
+    protected void v17Write(ByteBuf buf) {
+        buf.writeInt(effectId);
+        buf.writeByte(effectId);
+        buf.writeByte(amplifier);
+        buf.writeShort(duration);
+    }
+
     @Override
     public void write(ByteBuf buf) {
         writeVarInt(this.entityId, buf);
diff --git a/protocol/src/main/java/net/md_5/bungee/protocol/packet/EntityRemoveEffect.java b/protocol/src/main/java/net/md_5/bungee/protocol/packet/EntityRemoveEffect.java
index 7ed2dc3a..9f8d56fc 100644
--- a/protocol/src/main/java/net/md_5/bungee/protocol/packet/EntityRemoveEffect.java
+++ b/protocol/src/main/java/net/md_5/bungee/protocol/packet/EntityRemoveEffect.java
@@ -1,18 +1,18 @@
 package net.md_5.bungee.protocol.packet;
 
+import io.github.waterfallmc.travertine.protocol.MultiVersionPacketV17;
 import io.netty.buffer.ByteBuf;
 import lombok.AllArgsConstructor;
 import lombok.Data;
 import lombok.EqualsAndHashCode;
 import lombok.NoArgsConstructor;
 import net.md_5.bungee.protocol.AbstractPacketHandler;
-import net.md_5.bungee.protocol.DefinedPacket;
 
 @Data
 @NoArgsConstructor
 @AllArgsConstructor
 @EqualsAndHashCode(callSuper = false)
-public class EntityRemoveEffect extends DefinedPacket {
+public class EntityRemoveEffect extends MultiVersionPacketV17 {
 
     private int entityId;
     private int effectId;
@@ -23,9 +23,15 @@ public class EntityRemoveEffect extends DefinedPacket {
         this.effectId = buf.readUnsignedByte();
     }
 
+    @Override
+    protected void v17Read(ByteBuf buf) {
+        this.entityId = buf.readInt();
+        this.effectId = buf.readUnsignedByte();
+    }
+
     @Override
     public void write(ByteBuf buf) {
-        writeVarInt(this.entityId, buf);
+        writeVarInt(entityId, buf);
         buf.writeByte(effectId);
     }
 
@@ -33,4 +39,10 @@ public class EntityRemoveEffect extends DefinedPacket {
     public void handle(AbstractPacketHandler handler) throws Exception {
         handler.handle(this);
     }
+
+    @Override
+    protected void v17Write(ByteBuf buf) {
+        buf.writeInt(entityId);
+        buf.writeByte(effectId);
+    }
 }
diff --git a/protocol/src/main/java/net/md_5/bungee/protocol/packet/KeepAlive.java b/protocol/src/main/java/net/md_5/bungee/protocol/packet/KeepAlive.java
index 9df9ef56..56e6e522 100644
--- a/protocol/src/main/java/net/md_5/bungee/protocol/packet/KeepAlive.java
+++ b/protocol/src/main/java/net/md_5/bungee/protocol/packet/KeepAlive.java
@@ -1,6 +1,6 @@
 package net.md_5.bungee.protocol.packet;
 
-import net.md_5.bungee.protocol.DefinedPacket;
+import io.github.waterfallmc.travertine.protocol.MultiVersionPacketV17;
 import io.netty.buffer.ByteBuf;
 import lombok.AllArgsConstructor;
 import lombok.Data;
@@ -13,17 +13,33 @@ import net.md_5.bungee.protocol.ProtocolConstants;
 @NoArgsConstructor
 @AllArgsConstructor
 @EqualsAndHashCode(callSuper = false)
-public class KeepAlive extends DefinedPacket
+public class KeepAlive extends MultiVersionPacketV17
 {
 
     private long randomId;
 
+    // Travertine start
+    @Override
+    public void v17Read(ByteBuf buf, ProtocolConstants.Direction direction, int protocolVersion)
+    {
+        randomId = buf.readInt();
+    }
+    // Travertine end
+
     @Override
     public void read(ByteBuf buf, ProtocolConstants.Direction direction, int protocolVersion)
     {
         randomId = ( protocolVersion >= ProtocolConstants.MINECRAFT_1_12_2 ) ? buf.readLong() : readVarInt( buf );
     }
 
+    // Travertine start
+    @Override
+    public void v17Write(ByteBuf buf, ProtocolConstants.Direction direction, int protocolVersion)
+    {
+        buf.writeInt((int) randomId);
+    }
+    // Travertine end
+
     @Override
     public void write(ByteBuf buf, ProtocolConstants.Direction direction, int protocolVersion)
     {
diff --git a/protocol/src/main/java/net/md_5/bungee/protocol/packet/PlayerListItem.java b/protocol/src/main/java/net/md_5/bungee/protocol/packet/PlayerListItem.java
index 9983ef2e..ae5dad52 100644
--- a/protocol/src/main/java/net/md_5/bungee/protocol/packet/PlayerListItem.java
+++ b/protocol/src/main/java/net/md_5/bungee/protocol/packet/PlayerListItem.java
@@ -1,5 +1,6 @@
 package net.md_5.bungee.protocol.packet;
 
+import io.github.waterfallmc.travertine.protocol.MultiVersionPacketV17;
 import net.md_5.bungee.protocol.DefinedPacket;
 import io.netty.buffer.ByteBuf;
 import lombok.Data;
@@ -13,12 +14,24 @@ import java.util.UUID;
 @Data
 @NoArgsConstructor
 @EqualsAndHashCode(callSuper = false)
-public class PlayerListItem extends DefinedPacket
+public class PlayerListItem extends MultiVersionPacketV17
 {
 
     private Action action;
     private Item[] items;
 
+    // Travertine start
+    @Override
+    public void v17Read(ByteBuf buf, ProtocolConstants.Direction direction, int protocolVersion)
+    {
+        items = new Item[ 1 ];
+        Item item = items[ 0 ] = new Item();
+        item.displayName = item.username = readString( buf );
+        action = !buf.readBoolean() ? Action.REMOVE_PLAYER : Action.ADD_PLAYER;
+        item.ping = buf.readShort();
+    }
+    // Travertine end
+
     @Override
     public void read(ByteBuf buf, ProtocolConstants.Direction direction, int protocolVersion)
     {
@@ -73,6 +86,17 @@ public class PlayerListItem extends DefinedPacket
         }
     }
 
+    // Travertine start
+    @Override
+    public void v17Write(ByteBuf buf, ProtocolConstants.Direction direction, int protocolVersion)
+    {
+        Item item = items[0]; // Only one at a time
+        writeString( item.displayName, buf ); // TODO: Server unique only!
+        buf.writeBoolean( action != Action.REMOVE_PLAYER );
+        buf.writeShort( item.ping );
+    }
+    // Travertine end
+
     @Override
     public void write(ByteBuf buf, ProtocolConstants.Direction direction, int protocolVersion)
     {
diff --git a/protocol/src/main/java/net/md_5/bungee/protocol/packet/PluginMessage.java b/protocol/src/main/java/net/md_5/bungee/protocol/packet/PluginMessage.java
index 0e06b49d..ac7451dc 100644
--- a/protocol/src/main/java/net/md_5/bungee/protocol/packet/PluginMessage.java
+++ b/protocol/src/main/java/net/md_5/bungee/protocol/packet/PluginMessage.java
@@ -3,8 +3,8 @@ package net.md_5.bungee.protocol.packet;
 import com.google.common.base.Function;
 import com.google.common.base.Preconditions;
 import com.google.common.base.Predicate;
+import io.github.waterfallmc.travertine.protocol.MultiVersionPacketV17;
 import io.netty.buffer.ByteBufUtil;
-import net.md_5.bungee.protocol.DefinedPacket;
 import io.netty.buffer.ByteBuf;
 import java.io.ByteArrayInputStream;
 import java.io.DataInput;
@@ -21,7 +21,7 @@ import net.md_5.bungee.protocol.ProtocolConstants;
 @NoArgsConstructor
 @AllArgsConstructor
 @EqualsAndHashCode(callSuper = false)
-public class PluginMessage extends DefinedPacket
+public class PluginMessage extends MultiVersionPacketV17
 {
 
     public static final Function<String, String> MODERNISE = new Function<String, String>()
@@ -79,6 +79,15 @@ public class PluginMessage extends DefinedPacket
      */
     private boolean allowExtendedPacket = false;
 
+    // Travertine start
+    @Override
+    public void v17Read(ByteBuf buf, ProtocolConstants.Direction direction, int protocolVersion)
+    {
+        tag = readString( buf );
+        data = v17readArray( buf );
+    }
+    // Travertine end
+
     @Override
     public void read(ByteBuf buf, ProtocolConstants.Direction direction, int protocolVersion)
     {
@@ -89,6 +98,15 @@ public class PluginMessage extends DefinedPacket
         buf.readBytes( data );
     }
 
+    // Travertine start
+    @Override
+    public void v17Write(ByteBuf buf, ProtocolConstants.Direction direction, int protocolVersion)
+    {
+        writeString( tag, buf );
+        v17writeArray( data, buf, allowExtendedPacket );
+    }
+    // Travertine end
+
     @Override
     public void write(ByteBuf buf, ProtocolConstants.Direction direction, int protocolVersion)
     {
diff --git a/protocol/src/main/java/net/md_5/bungee/protocol/packet/ScoreboardObjective.java b/protocol/src/main/java/net/md_5/bungee/protocol/packet/ScoreboardObjective.java
index 6279d9f3..b4a66baf 100644
--- a/protocol/src/main/java/net/md_5/bungee/protocol/packet/ScoreboardObjective.java
+++ b/protocol/src/main/java/net/md_5/bungee/protocol/packet/ScoreboardObjective.java
@@ -1,6 +1,7 @@
 package net.md_5.bungee.protocol.packet;
 
 import net.md_5.bungee.protocol.DefinedPacket;
+import io.github.waterfallmc.travertine.protocol.MultiVersionPacketV17;
 import io.netty.buffer.ByteBuf;
 import java.util.Locale;
 import lombok.AllArgsConstructor;
@@ -14,7 +15,7 @@ import net.md_5.bungee.protocol.ProtocolConstants;
 @NoArgsConstructor
 @AllArgsConstructor
 @EqualsAndHashCode(callSuper = false)
-public class ScoreboardObjective extends DefinedPacket
+public class ScoreboardObjective extends MultiVersionPacketV17
 {
 
     private String name;
@@ -25,6 +26,16 @@ public class ScoreboardObjective extends DefinedPacket
      */
     private byte action;
 
+    // Travertine start
+    @Override
+    public void v17Read(ByteBuf buf, ProtocolConstants.Direction direction, int protocolVersion)
+    {
+        name = readString( buf );
+        value = readString( buf );
+        action = buf.readByte();
+    }
+    // Travertine end
+
     @Override
     public void read(ByteBuf buf, ProtocolConstants.Direction direction, int protocolVersion)
     {
@@ -43,6 +54,16 @@ public class ScoreboardObjective extends DefinedPacket
         }
     }
 
+    // Travertine start
+    @Override
+    public void v17Write(ByteBuf buf, ProtocolConstants.Direction direction, int protocolVersion)
+    {
+        writeString( name, buf );
+        writeString( value, buf );
+        buf.writeByte( action );
+    }
+    // Travertine end
+
     @Override
     public void write(ByteBuf buf, ProtocolConstants.Direction direction, int protocolVersion)
     {
diff --git a/protocol/src/main/java/net/md_5/bungee/protocol/packet/ScoreboardScore.java b/protocol/src/main/java/net/md_5/bungee/protocol/packet/ScoreboardScore.java
index 6f0de535..b967f89f 100644
--- a/protocol/src/main/java/net/md_5/bungee/protocol/packet/ScoreboardScore.java
+++ b/protocol/src/main/java/net/md_5/bungee/protocol/packet/ScoreboardScore.java
@@ -1,6 +1,6 @@
 package net.md_5.bungee.protocol.packet;
 
-import net.md_5.bungee.protocol.DefinedPacket;
+import io.github.waterfallmc.travertine.protocol.MultiVersionPacketV17;
 import io.netty.buffer.ByteBuf;
 import lombok.AllArgsConstructor;
 import lombok.Data;
@@ -13,7 +13,7 @@ import net.md_5.bungee.protocol.ProtocolConstants;
 @NoArgsConstructor
 @AllArgsConstructor
 @EqualsAndHashCode(callSuper = false)
-public class ScoreboardScore extends DefinedPacket
+public class ScoreboardScore extends MultiVersionPacketV17
 {
 
     private String itemName;
@@ -24,6 +24,20 @@ public class ScoreboardScore extends DefinedPacket
     private String scoreName;
     private int value;
 
+    // Travertine start
+    @Override
+    public void v17Read(ByteBuf buf, ProtocolConstants.Direction direction, int protocolVersion)
+    {
+        itemName = readString( buf );
+        action = buf.readByte();
+        if ( action != 1 )
+        {
+            scoreName = readString( buf );
+            value = buf.readInt();
+        }
+    }
+    // Travertine end
+
     @Override
     public void read(ByteBuf buf, ProtocolConstants.Direction direction, int protocolVersion)
     {
@@ -36,6 +50,20 @@ public class ScoreboardScore extends DefinedPacket
         }
     }
 
+    // Travertine start
+    @Override
+    public void v17Write(ByteBuf buf, ProtocolConstants.Direction direction, int protocolVersion)
+    {
+        writeString( itemName, buf );
+        buf.writeByte( action );
+        if ( action != 1 )
+        {
+            writeString( scoreName, buf );
+            buf.writeInt( value );
+        }
+    }
+    // Travertine end
+
     @Override
     public void write(ByteBuf buf, ProtocolConstants.Direction direction, int protocolVersion)
     {
diff --git a/protocol/src/main/java/net/md_5/bungee/protocol/packet/TabCompleteRequest.java b/protocol/src/main/java/net/md_5/bungee/protocol/packet/TabCompleteRequest.java
index f9eaa7ce..e174ac0b 100644
--- a/protocol/src/main/java/net/md_5/bungee/protocol/packet/TabCompleteRequest.java
+++ b/protocol/src/main/java/net/md_5/bungee/protocol/packet/TabCompleteRequest.java
@@ -1,6 +1,6 @@
 package net.md_5.bungee.protocol.packet;
 
-import net.md_5.bungee.protocol.DefinedPacket;
+import io.github.waterfallmc.travertine.protocol.MultiVersionPacketV17;
 import io.netty.buffer.ByteBuf;
 import lombok.Data;
 import lombok.EqualsAndHashCode;
@@ -11,7 +11,7 @@ import net.md_5.bungee.protocol.ProtocolConstants;
 @Data
 @NoArgsConstructor
 @EqualsAndHashCode(callSuper = false)
-public class TabCompleteRequest extends DefinedPacket
+public class TabCompleteRequest extends MultiVersionPacketV17
 {
 
     private int transactionId;
@@ -33,6 +33,13 @@ public class TabCompleteRequest extends DefinedPacket
         this.hasPositon = hasPosition;
         this.position = position;
     }
+    // Travertine start
+    @Override
+    public void v17Read(ByteBuf buf, ProtocolConstants.Direction direction, int protocolVersion)
+    {
+        cursor = readString( buf );
+    }
+    // Travertine end
 
     @Override
     public void read(ByteBuf buf, ProtocolConstants.Direction direction, int protocolVersion)
@@ -57,6 +64,14 @@ public class TabCompleteRequest extends DefinedPacket
         }
     }
 
+    // Travertine start
+    @Override
+    public void v17Write(ByteBuf buf, ProtocolConstants.Direction direction, int protocolVersion)
+    {
+        writeString( cursor, buf );
+    }
+    // Travertine end
+
     @Override
     public void write(ByteBuf buf, ProtocolConstants.Direction direction, int protocolVersion)
     {
diff --git a/protocol/src/main/java/net/md_5/bungee/protocol/packet/Team.java b/protocol/src/main/java/net/md_5/bungee/protocol/packet/Team.java
index f93508d9..13af5112 100644
--- a/protocol/src/main/java/net/md_5/bungee/protocol/packet/Team.java
+++ b/protocol/src/main/java/net/md_5/bungee/protocol/packet/Team.java
@@ -1,6 +1,7 @@
 package net.md_5.bungee.protocol.packet;
 
 import net.md_5.bungee.protocol.DefinedPacket;
+import io.github.waterfallmc.travertine.protocol.MultiVersionPacketV17;
 import io.netty.buffer.ByteBuf;
 import lombok.AllArgsConstructor;
 import lombok.Data;
@@ -13,7 +14,7 @@ import net.md_5.bungee.protocol.ProtocolConstants;
 @NoArgsConstructor
 @AllArgsConstructor
 @EqualsAndHashCode(callSuper = false)
-public class Team extends DefinedPacket
+public class Team extends MultiVersionPacketV17
 {
 
     private String name;
@@ -39,6 +40,31 @@ public class Team extends DefinedPacket
         this.mode = 1;
     }
 
+    // Travertine start
+    @Override
+    public void v17Read(ByteBuf buf, ProtocolConstants.Direction direction, int protocolVersion)
+    {
+        name = readString( buf );
+        mode = buf.readByte();
+        if ( mode == 0 || mode == 2 )
+        {
+            displayName = readString( buf );
+            prefix = readString( buf );
+            suffix = readString( buf );
+            friendlyFire = buf.readByte();
+        }
+        if ( mode == 0 || mode == 3 || mode == 4 )
+        {
+            int len = buf.readShort();
+            players = new String[ len ];
+            for ( int i = 0; i < len; i++ )
+            {
+                players[i] = readString( buf );
+            }
+        }
+    }
+    // Travertine end
+
     @Override
     public void read(ByteBuf buf, ProtocolConstants.Direction direction, int protocolVersion)
     {
@@ -76,6 +102,30 @@ public class Team extends DefinedPacket
         }
     }
 
+    // Travertine start
+    @Override
+    public void v17Write(ByteBuf buf, ProtocolConstants.Direction direction, int protocolVersion)
+    {
+        writeString( name, buf );
+        buf.writeByte( mode );
+        if ( mode == 0 || mode == 2 )
+        {
+            writeString( displayName, buf );
+            writeString( prefix, buf );
+            writeString( suffix, buf );
+            buf.writeByte( friendlyFire );
+        }
+        if ( mode == 0 || mode == 3 || mode == 4 )
+        {
+            buf.writeShort( players.length );
+            for ( String player : players )
+            {
+                writeString( player, buf );
+            }
+        }
+    }
+    // Travertine end
+
     @Override
     public void write(ByteBuf buf, ProtocolConstants.Direction direction, int protocolVersion)
     {
diff --git a/proxy/src/main/java/net/md_5/bungee/BungeeCord.java b/proxy/src/main/java/net/md_5/bungee/BungeeCord.java
index 79a3a145..fdc23cc1 100644
--- a/proxy/src/main/java/net/md_5/bungee/BungeeCord.java
+++ b/proxy/src/main/java/net/md_5/bungee/BungeeCord.java
@@ -162,6 +162,14 @@ public class BungeeCord extends ProxyServer
             .registerTypeAdapter( SelectorComponent.class, new SelectorComponentSerializer() )
             .registerTypeAdapter( ServerPing.PlayerInfo.class, new PlayerInfoSerializer() )
             .registerTypeAdapter( Favicon.class, Favicon.getFaviconTypeAdapter() ).create();
+    // Travertine start
+    public final Gson gsonLegacy = new GsonBuilder()
+            .registerTypeAdapter( BaseComponent.class, new ComponentSerializer() )
+            .registerTypeAdapter( TextComponent.class, new TextComponentSerializer() )
+            .registerTypeAdapter( TranslatableComponent.class, new TranslatableComponentSerializer() )
+            .registerTypeAdapter( ServerPing.PlayerInfo.class, new PlayerInfoSerializer( ProtocolConstants.MINECRAFT_1_7_2 ) )
+            .registerTypeAdapter( Favicon.class, Favicon.getFaviconTypeAdapter() ).create();
+    // Travertine end
     @Getter
     private ConnectionThrottle connectionThrottle;
     private final ModuleManager moduleManager = new ModuleManager();
diff --git a/proxy/src/main/java/net/md_5/bungee/BungeeTitle.java b/proxy/src/main/java/net/md_5/bungee/BungeeTitle.java
index 494213db..1d89acf5 100644
--- a/proxy/src/main/java/net/md_5/bungee/BungeeTitle.java
+++ b/proxy/src/main/java/net/md_5/bungee/BungeeTitle.java
@@ -5,6 +5,7 @@ import net.md_5.bungee.api.chat.BaseComponent;
 import net.md_5.bungee.api.connection.ProxiedPlayer;
 import net.md_5.bungee.chat.ComponentSerializer;
 import net.md_5.bungee.protocol.DefinedPacket;
+import net.md_5.bungee.protocol.ProtocolConstants;
 import net.md_5.bungee.protocol.packet.Title.Action;
 
 public class BungeeTitle implements Title
@@ -151,6 +152,7 @@ public class BungeeTitle implements Title
     @Override
     public Title send(ProxiedPlayer player)
     {
+        if ( ProtocolConstants.isBeforeOrEq( player.getPendingConnection().getVersion(), ProtocolConstants.MINECRAFT_1_7_6 ) ) return this;
         sendPacket( player, clear );
         sendPacket( player, reset );
         sendPacket( player, times );
diff --git a/proxy/src/main/java/net/md_5/bungee/PlayerInfoSerializer.java b/proxy/src/main/java/net/md_5/bungee/PlayerInfoSerializer.java
index 491cf1a1..299a216c 100644
--- a/proxy/src/main/java/net/md_5/bungee/PlayerInfoSerializer.java
+++ b/proxy/src/main/java/net/md_5/bungee/PlayerInfoSerializer.java
@@ -10,17 +10,32 @@ import com.google.gson.JsonSerializer;
 import java.lang.reflect.Type;
 import java.util.UUID;
 import net.md_5.bungee.api.ServerPing;
+import net.md_5.bungee.protocol.ProtocolConstants;
 
 public class PlayerInfoSerializer implements JsonSerializer<ServerPing.PlayerInfo>, JsonDeserializer<ServerPing.PlayerInfo>
 {
 
+    // Travertine start
+    private final int protocol;
+
+    public PlayerInfoSerializer()
+    {
+        this.protocol = ProtocolConstants.MINECRAFT_1_7_6;
+    }
+
+    public PlayerInfoSerializer(int protocol)
+    {
+        this.protocol = protocol;
+    }
+    // Travertine end
+
     @Override
     public ServerPing.PlayerInfo deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws JsonParseException
     {
         JsonObject js = json.getAsJsonObject();
         ServerPing.PlayerInfo info = new ServerPing.PlayerInfo( js.get( "name" ).getAsString(), (UUID) null );
         String id = js.get( "id" ).getAsString();
-        if ( !id.contains( "-" ) )
+        if ( ProtocolConstants.isBeforeOrEq( protocol, ProtocolConstants.MINECRAFT_1_7_2 ) || !id.contains( "-" ) ) // Travertine
         {
             info.setId( id );
         } else
@@ -35,7 +50,15 @@ public class PlayerInfoSerializer implements JsonSerializer<ServerPing.PlayerInf
     {
         JsonObject out = new JsonObject();
         out.addProperty( "name", src.getName() );
-        out.addProperty( "id", src.getUniqueId().toString() );
+        // Travertine start
+        if ( ProtocolConstants.isBeforeOrEq( protocol, ProtocolConstants.MINECRAFT_1_7_2 ) )
+        {
+            out.addProperty( "id", src.getId() );
+        } else
+        {
+            out.addProperty( "id", src.getUniqueId().toString() );
+        }
+        // Travertine end
         return out;
     }
 }
diff --git a/proxy/src/main/java/net/md_5/bungee/ServerConnector.java b/proxy/src/main/java/net/md_5/bungee/ServerConnector.java
index 110ac496..fc784b0f 100644
--- a/proxy/src/main/java/net/md_5/bungee/ServerConnector.java
+++ b/proxy/src/main/java/net/md_5/bungee/ServerConnector.java
@@ -5,6 +5,7 @@ import io.netty.buffer.ByteBuf;
 import io.netty.buffer.ByteBufAllocator;
 import java.util.Locale;
 import java.util.Arrays; // Waterfall
+import java.nio.charset.StandardCharsets; // Travertine
 import java.util.Queue;
 import java.util.Set;
 import java.util.UUID;
@@ -247,10 +248,20 @@ public class ServerConnector extends PacketHandler
 
             user.unsafe().sendPacket( modLogin );
 
-            ByteBuf brand = ByteBufAllocator.DEFAULT.heapBuffer();
-            DefinedPacket.writeString( bungee.getName() + " (" + bungee.getVersion() + ")", brand );
-            user.unsafe().sendPacket( new PluginMessage( user.getPendingConnection().getVersion() >= ProtocolConstants.MINECRAFT_1_13 ? "minecraft:brand" : "MC|Brand", brand, handshakeHandler.isServerForge() ) );
-            brand.release();
+            // Travertine start
+            String brandString = bungee.getName() + " (" + bungee.getVersion() + ")";
+
+            if ( ProtocolConstants.isBeforeOrEq( user.getPendingConnection().getVersion(), ProtocolConstants.MINECRAFT_1_7_6 ) )
+            {
+                user.unsafe().sendPacket( new PluginMessage( "MC|Brand", brandString.getBytes( StandardCharsets.UTF_8 ), handshakeHandler.isServerForge() ) );
+            } else
+            {
+                ByteBuf brand = ByteBufAllocator.DEFAULT.heapBuffer();
+                DefinedPacket.writeString(brandString, brand);
+                user.unsafe().sendPacket( new PluginMessage( user.getPendingConnection().getVersion() >= ProtocolConstants.MINECRAFT_1_13 ? "minecraft:brand" : "MC|Brand", brand, handshakeHandler.isServerForge() ) );
+                brand.release();
+            }
+            // Travertine end
 
             user.setDimension( login.getDimension() );
         } else
@@ -262,7 +273,7 @@ public class ServerConnector extends PacketHandler
             if ( !user.isDisableEntityMetadataRewrite() ) { // Waterfall
             for ( Objective objective : serverScoreboard.getObjectives() )
             {
-                user.unsafe().sendPacket( new ScoreboardObjective( objective.getName(), objective.getValue(), ScoreboardObjective.HealthDisplay.fromString( objective.getType() ), (byte) 1 ) );
+                user.unsafe().sendPacket( new ScoreboardObjective( objective.getName(), objective.getValue(), objective.getType() == null ? null : ScoreboardObjective.HealthDisplay.fromString(objective.getType()), (byte) 1 ) ); // Travertine - 1.7
             }
             for ( Score score : serverScoreboard.getScores() )
             {
@@ -414,6 +425,14 @@ public class ServerConnector extends PacketHandler
             {
                 this.handshakeHandler.handle( pluginMessage );
 
+                // Travertine start
+                if ( user.getForgeClientHandler().checkUserOutdated() )
+                {
+                    ch.close();
+                    user.getPendingConnects().remove(target);
+                }
+                // Travertine end
+
                 // We send the message as part of the handler, so don't send it here.
                 throw CancelSendSignal.INSTANCE;
             }
diff --git a/proxy/src/main/java/net/md_5/bungee/UserConnection.java b/proxy/src/main/java/net/md_5/bungee/UserConnection.java
index 8a524a64..67f7102d 100644
--- a/proxy/src/main/java/net/md_5/bungee/UserConnection.java
+++ b/proxy/src/main/java/net/md_5/bungee/UserConnection.java
@@ -53,6 +53,7 @@ import net.md_5.bungee.protocol.MinecraftDecoder;
 import net.md_5.bungee.protocol.MinecraftEncoder;
 import net.md_5.bungee.protocol.PacketWrapper;
 import net.md_5.bungee.protocol.Protocol;
+import net.md_5.bungee.protocol.ProtocolConstants; // Travertine
 import net.md_5.bungee.protocol.packet.Chat;
 import net.md_5.bungee.protocol.packet.ClientSettings;
 import net.md_5.bungee.protocol.packet.Kick;
@@ -202,6 +203,7 @@ public final class UserConnection implements ProxiedPlayer
     public void setDisplayName(String name)
     {
         Preconditions.checkNotNull( name, "displayName" );
+        Preconditions.checkArgument( name.length() <= 16, "Display name cannot be longer than 16 characters" ); // Travertine
         displayName = name;
     }
 
@@ -484,7 +486,7 @@ public final class UserConnection implements ProxiedPlayer
         message = ChatComponentTransformer.getInstance().transform( this, message );
 
         // Action bar doesn't display the new JSON formattings, legacy works - send it using this for now
-        if ( position == ChatMessageType.ACTION_BAR )
+        if ( position == ChatMessageType.ACTION_BAR && getPendingConnection().getVersion() >= ProtocolConstants.MINECRAFT_1_8 ) // Travertine
         {
             sendMessage( position, ComponentSerializer.toString( new TextComponent( BaseComponent.toLegacyText( message ) ) ) );
         } else
@@ -499,7 +501,7 @@ public final class UserConnection implements ProxiedPlayer
         message = ChatComponentTransformer.getInstance().transform( this, message )[0];
 
         // Action bar doesn't display the new JSON formattings, legacy works - send it using this for now
-        if ( position == ChatMessageType.ACTION_BAR )
+        if ( position == ChatMessageType.ACTION_BAR && getPendingConnection().getVersion() >= ProtocolConstants.MINECRAFT_1_8 ) // Travertine
         {
             sendMessage( position, ComponentSerializer.toString( new TextComponent( BaseComponent.toLegacyText( message ) ) ) );
         } else
@@ -678,6 +680,7 @@ public final class UserConnection implements ProxiedPlayer
     @Override
     public void setTabHeader(BaseComponent header, BaseComponent footer)
     {
+        if ( ProtocolConstants.isBeforeOrEq( pendingConnection.getVersion(), ProtocolConstants.MINECRAFT_1_7_6 ) ) return; // Travertine
         header = ChatComponentTransformer.getInstance().transform( this, header )[0];
         footer = ChatComponentTransformer.getInstance().transform( this, footer )[0];
 
@@ -690,6 +693,7 @@ public final class UserConnection implements ProxiedPlayer
     @Override
     public void setTabHeader(BaseComponent[] header, BaseComponent[] footer)
     {
+        if ( ProtocolConstants.isBeforeOrEq( pendingConnection.getVersion(), ProtocolConstants.MINECRAFT_1_7_6 ) ) return; // Travertine
         header = ChatComponentTransformer.getInstance().transform( this, header );
         footer = ChatComponentTransformer.getInstance().transform( this, footer );
 
@@ -719,6 +723,7 @@ public final class UserConnection implements ProxiedPlayer
 
     public void setCompressionThreshold(int compressionThreshold)
     {
+        if ( ProtocolConstants.isBeforeOrEq( pendingConnection.getVersion(), ProtocolConstants.MINECRAFT_1_7_6 ) ) return; // Travertine
         if ( !ch.isClosing() && this.compressionThreshold == -1 && compressionThreshold >= 0 )
         {
             this.compressionThreshold = compressionThreshold;
diff --git a/proxy/src/main/java/net/md_5/bungee/connection/DownstreamBridge.java b/proxy/src/main/java/net/md_5/bungee/connection/DownstreamBridge.java
index c1dc6489..b0874b69 100644
--- a/proxy/src/main/java/net/md_5/bungee/connection/DownstreamBridge.java
+++ b/proxy/src/main/java/net/md_5/bungee/connection/DownstreamBridge.java
@@ -160,7 +160,7 @@ public class DownstreamBridge extends PacketHandler
         switch ( objective.getAction() )
         {
             case 0:
-                serverScoreboard.addObjective( new Objective( objective.getName(), objective.getValue(), objective.getType().toString() ) );
+                serverScoreboard.addObjective( new Objective( objective.getName(), objective.getValue(), objective.getType() != null ? objective.getType().toString() : null) ); // Travertine - 1.7 protocol support
                 break;
             case 1:
                 serverScoreboard.removeObjective( objective.getName() );
@@ -170,7 +170,7 @@ public class DownstreamBridge extends PacketHandler
                 if ( oldObjective != null )
                 {
                     oldObjective.setValue( objective.getValue() );
-                    oldObjective.setType( objective.getType().toString() );
+                    oldObjective.setType( objective.getType() != null ? objective.getType().toString() : null ); // Travertine - 1.7 protocol support
                 }
                 break;
             default:
@@ -267,16 +267,28 @@ public class DownstreamBridge extends PacketHandler
 
         if ( pluginMessage.getTag().equals( con.getPendingConnection().getVersion() >= ProtocolConstants.MINECRAFT_1_13 ? "minecraft:brand" : "MC|Brand" ) )
         {
-            ByteBuf brand = Unpooled.wrappedBuffer( pluginMessage.getData() );
-            String serverBrand = DefinedPacket.readString( brand );
-            brand.release();
-
-            Preconditions.checkState( !serverBrand.contains( bungee.getName() ), "Cannot connect proxy to itself!" );
-
-            brand = ByteBufAllocator.DEFAULT.heapBuffer();
-            DefinedPacket.writeString( bungee.getName() + " (" + bungee.getVersion() + ")" + " <- " + serverBrand, brand );
-            pluginMessage.setData( brand );
-            brand.release();
+            // Travertine start
+            if ( ProtocolConstants.isAfterOrEq( con.getPendingConnection().getVersion(), ProtocolConstants.MINECRAFT_1_8 ) )
+            {
+                try
+                {
+                    ByteBuf brand = Unpooled.wrappedBuffer(pluginMessage.getData());
+                    String serverBrand = DefinedPacket.readString(brand);
+                    brand.release();
+                    brand = ByteBufAllocator.DEFAULT.heapBuffer();
+                    DefinedPacket.writeString(bungee.getName() + " (" + bungee.getVersion() + ")" + " <- " + serverBrand, brand);
+                    pluginMessage.setData(brand);
+                    brand.release();
+                } catch (Exception ProtocolHacksSuck)
+                {
+                    return;
+                }
+            } else
+            {
+                String serverBrand = new String( pluginMessage.getData(), "UTF-8" );
+                pluginMessage.setData( ( bungee.getName() + " (" + bungee.getVersion() + ")" + " <- " + serverBrand ).getBytes( "UTF-8" ) );
+            }
+            // Travertine end
             // changes in the packet are ignored so we need to send it manually
             con.unsafe().sendPacket( pluginMessage );
             throw CancelSendSignal.INSTANCE;
diff --git a/proxy/src/main/java/net/md_5/bungee/connection/InitialHandler.java b/proxy/src/main/java/net/md_5/bungee/connection/InitialHandler.java
index e81236fc..144420e2 100644
--- a/proxy/src/main/java/net/md_5/bungee/connection/InitialHandler.java
+++ b/proxy/src/main/java/net/md_5/bungee/connection/InitialHandler.java
@@ -12,6 +12,13 @@ import java.util.UUID;
 import java.util.concurrent.TimeUnit;
 import java.util.logging.Level;
 import javax.crypto.SecretKey;
+
+import com.google.common.base.Charsets;
+import com.google.common.base.Preconditions;
+import com.google.gson.Gson;
+
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
 import lombok.Getter;
 import lombok.RequiredArgsConstructor;
 import net.md_5.bungee.BungeeCord;
@@ -233,12 +240,28 @@ public class InitialHandler extends PacketHandler implements PendingConnection
                     @Override
                     public void done(ProxyPingEvent pingResult, Throwable error)
                     {
-                        Gson gson = BungeeCord.getInstance().gson;
-                        unsafe.sendPacket( new StatusResponse( gson.toJson( pingResult.getResponse() ) ) );
+                        Gson gson = handshake.getProtocolVersion() == ProtocolConstants.MINECRAFT_1_7_2 ? BungeeCord.getInstance().gsonLegacy : BungeeCord.getInstance().gson; // Travertine
                         if ( bungee.getConnectionThrottle() != null )
                         {
                             bungee.getConnectionThrottle().unthrottle( getAddress().getAddress() );
                         }
+                        // Travertine start
+                        if ( ProtocolConstants.isBeforeOrEq( handshake.getProtocolVersion() , ProtocolConstants.MINECRAFT_1_8 ) )
+                        {
+                            // Minecraft < 1.9 doesn't send string server descriptions as chat components. Older 1.7
+                            // clients even crash when encountering a chat component instead of a string. To be on the
+                            // safe side, always send legacy descriptions for < 1.9 clients.
+                            JsonElement element = gson.toJsonTree(pingResult.getResponse());
+                            Preconditions.checkArgument(element.isJsonObject(), "Response is not a JSON object");
+                            JsonObject object = element.getAsJsonObject();
+                            object.addProperty("description", pingResult.getResponse().getDescription());
+
+                            unsafe.sendPacket(new StatusResponse(gson.toJson(element)));
+                        } else
+                        {
+                            unsafe.sendPacket( new StatusResponse( gson.toJson( pingResult.getResponse() ) ) );
+                        }
+                        // Travertine end
                     }
                 };
 
@@ -520,7 +543,15 @@ public class InitialHandler extends PacketHandler implements PendingConnection
                             userCon.setCompressionThreshold( BungeeCord.getInstance().config.getCompressionThreshold() );
                             userCon.init();
 
-                            unsafe.sendPacket( new LoginSuccess( getUniqueId().toString(), getName() ) ); // With dashes in between
+                            // Travertine start
+                            if ( ProtocolConstants.isAfterOrEq( getVersion() , ProtocolConstants.MINECRAFT_1_7_6 ) )
+                            {
+                                unsafe.sendPacket( new LoginSuccess( getUniqueId().toString(), getName() ) ); // With dashes in between
+                            } else
+                            {
+                                unsafe.sendPacket( new LoginSuccess( getUUID(), getName() ) ); // Without dashes, for older clients.
+                            }
+                            // Travertine end
                             ch.setProtocol( Protocol.GAME );
 
                             ch.getHandle().pipeline().get( HandlerBoss.class ).setHandler( new UpstreamBridge( bungee, userCon ) );
diff --git a/proxy/src/main/java/net/md_5/bungee/connection/PingHandler.java b/proxy/src/main/java/net/md_5/bungee/connection/PingHandler.java
index 6bc14d67..2b3bc361 100644
--- a/proxy/src/main/java/net/md_5/bungee/connection/PingHandler.java
+++ b/proxy/src/main/java/net/md_5/bungee/connection/PingHandler.java
@@ -15,6 +15,7 @@ import net.md_5.bungee.protocol.MinecraftDecoder;
 import net.md_5.bungee.protocol.MinecraftEncoder;
 import net.md_5.bungee.protocol.PacketWrapper;
 import net.md_5.bungee.protocol.Protocol;
+import net.md_5.bungee.protocol.ProtocolConstants;
 import net.md_5.bungee.protocol.packet.Handshake;
 import net.md_5.bungee.protocol.packet.StatusRequest;
 import net.md_5.bungee.protocol.packet.StatusResponse;
@@ -64,7 +65,7 @@ public class PingHandler extends PacketHandler
     @SuppressFBWarnings("UWF_FIELD_NOT_INITIALIZED_IN_CONSTRUCTOR")
     public void handle(StatusResponse statusResponse) throws Exception
     {
-        Gson gson = BungeeCord.getInstance().gson;
+        Gson gson = protocol == ProtocolConstants.MINECRAFT_1_7_2 ? BungeeCord.getInstance().gsonLegacy : BungeeCord.getInstance().gson; // Travertine
         callback.done( gson.fromJson( statusResponse.getResponse(), ServerPing.class ), null );
         channel.close();
     }
diff --git a/proxy/src/main/java/net/md_5/bungee/connection/UpstreamBridge.java b/proxy/src/main/java/net/md_5/bungee/connection/UpstreamBridge.java
index 51d0c6cf..35b9530a 100644
--- a/proxy/src/main/java/net/md_5/bungee/connection/UpstreamBridge.java
+++ b/proxy/src/main/java/net/md_5/bungee/connection/UpstreamBridge.java
@@ -83,7 +83,12 @@ public class UpstreamBridge extends PacketHandler
             } );
             for ( ProxiedPlayer player : con.getServer().getInfo().getPlayers() )
             {
-                player.unsafe().sendPacket( packet );
+                // Travertine start
+                if ( ProtocolConstants.isAfterOrEq( player.getPendingConnection().getVersion(), ProtocolConstants.MINECRAFT_1_8 ) )
+                {
+                    player.unsafe().sendPacket( packet );
+                }
+                // Travertine end
             }
             con.getServer().disconnect( "Quitting" );
         }
diff --git a/proxy/src/main/java/net/md_5/bungee/entitymap/EntityMap.java b/proxy/src/main/java/net/md_5/bungee/entitymap/EntityMap.java
index 994670cd..7d1c05cc 100644
--- a/proxy/src/main/java/net/md_5/bungee/entitymap/EntityMap.java
+++ b/proxy/src/main/java/net/md_5/bungee/entitymap/EntityMap.java
@@ -29,6 +29,10 @@ public abstract class EntityMap
     {
         switch ( version )
         {
+            case ProtocolConstants.MINECRAFT_1_7_2:
+                return EntityMap_1_7_2.INSTANCE;
+            case ProtocolConstants.MINECRAFT_1_7_6:
+                return EntityMap_1_7_6.INSTANCE;
             case ProtocolConstants.MINECRAFT_1_8:
                 return EntityMap_1_8.INSTANCE;
             case ProtocolConstants.MINECRAFT_1_9:
diff --git a/proxy/src/main/java/net/md_5/bungee/entitymap/EntityMap.java.orig b/proxy/src/main/java/net/md_5/bungee/entitymap/EntityMap.java.orig
new file mode 100644
index 00000000..d98a8056
--- /dev/null
+++ b/proxy/src/main/java/net/md_5/bungee/entitymap/EntityMap.java.orig
@@ -0,0 +1,215 @@
+package net.md_5.bungee.entitymap;
+
+import com.flowpowered.nbt.stream.NBTInputStream;
+import com.google.common.base.Throwables;
+import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
+import io.netty.buffer.ByteBuf;
+import io.netty.buffer.ByteBufInputStream;
+import java.io.IOException;
+import lombok.AccessLevel;
+import lombok.NoArgsConstructor;
+import net.md_5.bungee.protocol.DefinedPacket;
+import net.md_5.bungee.protocol.ProtocolConstants;
+
+/**
+ * Class to rewrite integers within packets.
+ */
+@NoArgsConstructor(access = AccessLevel.PACKAGE)
+public abstract class EntityMap
+{
+
+    private final boolean[] clientboundInts = new boolean[ 256 ];
+    private final boolean[] clientboundVarInts = new boolean[ 256 ];
+
+    private final boolean[] serverboundInts = new boolean[ 256 ];
+    private final boolean[] serverboundVarInts = new boolean[ 256 ];
+
+    // Returns the correct entity map for the protocol version
+    public static EntityMap getEntityMap(int version)
+    {
+        switch ( version )
+        {
+            case ProtocolConstants.MINECRAFT_1_8:
+                return EntityMap_1_8.INSTANCE;
+            case ProtocolConstants.MINECRAFT_1_9:
+            case ProtocolConstants.MINECRAFT_1_9_1:
+            case ProtocolConstants.MINECRAFT_1_9_2:
+                return EntityMap_1_9.INSTANCE;
+            case ProtocolConstants.MINECRAFT_1_9_4:
+                return EntityMap_1_9_4.INSTANCE;
+            case ProtocolConstants.MINECRAFT_1_10:
+                return EntityMap_1_10.INSTANCE;
+            case ProtocolConstants.MINECRAFT_1_11:
+            case ProtocolConstants.MINECRAFT_1_11_1:
+                return EntityMap_1_11.INSTANCE;
+        }
+        throw new RuntimeException( "Version " + version + " has no entity map" );
+    }
+
+    protected void addRewrite(int id, ProtocolConstants.Direction direction, boolean varint)
+    {
+        if ( direction == ProtocolConstants.Direction.TO_CLIENT )
+        {
+            if ( varint )
+            {
+                clientboundVarInts[id] = true;
+            } else
+            {
+                clientboundInts[id] = true;
+            }
+        } else if ( varint )
+        {
+            serverboundVarInts[id] = true;
+        } else
+        {
+            serverboundInts[id] = true;
+        }
+    }
+
+    public void rewriteServerbound(ByteBuf packet, int oldId, int newId)
+    {
+        rewrite( packet, oldId, newId, serverboundInts, serverboundVarInts );
+    }
+
+    public void rewriteClientbound(ByteBuf packet, int oldId, int newId)
+    {
+        rewrite( packet, oldId, newId, clientboundInts, clientboundVarInts );
+    }
+
+    protected static void rewriteInt(ByteBuf packet, int oldId, int newId, int offset)
+    {
+        int readId = packet.getInt( offset );
+        if ( readId == oldId )
+        {
+            packet.setInt( offset, newId );
+        } else if ( readId == newId )
+        {
+            packet.setInt( offset, oldId );
+        }
+    }
+
+    @SuppressFBWarnings("DLS_DEAD_LOCAL_STORE")
+    protected static void rewriteVarInt(ByteBuf packet, int oldId, int newId, int offset)
+    {
+        // Need to rewrite the packet because VarInts are variable length
+        int readId = DefinedPacket.readVarInt( packet );
+        int readIdLength = packet.readerIndex() - offset;
+        if ( readId == oldId || readId == newId )
+        {
+            ByteBuf data = packet.copy();
+            packet.readerIndex( offset );
+            packet.writerIndex( offset );
+            DefinedPacket.writeVarInt( readId == oldId ? newId : oldId, packet );
+            packet.writeBytes( data );
+            data.release();
+        }
+    }
+
+    protected static void rewriteMetaVarInt(ByteBuf packet, int oldId, int newId, int metaIndex)
+    {
+        int readerIndex = packet.readerIndex();
+
+        short index;
+        while ( ( index = packet.readUnsignedByte() ) != 0xFF )
+        {
+            int type = DefinedPacket.readVarInt( packet );
+
+            switch ( type )
+            {
+                case 0:
+                    packet.skipBytes( 1 ); // byte
+                    break;
+                case 1:
+                    if ( index == metaIndex )
+                    {
+                        int position = packet.readerIndex();
+                        rewriteVarInt( packet, oldId, newId, position );
+                        packet.readerIndex( position );
+                    }
+                    DefinedPacket.readVarInt( packet );
+                    break;
+                case 2:
+                    packet.skipBytes( 4 ); // float
+                    break;
+                case 3:
+                case 4:
+                    DefinedPacket.readString( packet );
+                    break;
+                case 5:
+                    if ( packet.readShort() != -1 )
+                    {
+                        packet.skipBytes( 3 ); // byte, short
+
+                        int position = packet.readerIndex();
+                        if ( packet.readByte() != 0 )
+                        {
+                            packet.readerIndex( position );
+
+                            try
+                            {
+                                new NBTInputStream( new ByteBufInputStream( packet ), false ).readTag();
+                            } catch ( IOException ex )
+                            {
+                                throw Throwables.propagate( ex );
+                            }
+                        }
+                    }
+                    break;
+                case 6:
+                    packet.skipBytes( 1 ); // boolean
+                    break;
+                case 7:
+                    packet.skipBytes( 12 ); // float, float, float
+                    break;
+                case 8:
+                    packet.readLong();
+                    break;
+                case 9:
+                    if ( packet.readBoolean() )
+                    {
+                        packet.skipBytes( 8 ); // long
+                    }
+                    break;
+                case 10:
+                    DefinedPacket.readVarInt( packet );
+                    break;
+                case 11:
+                    if ( packet.readBoolean() )
+                    {
+                        packet.skipBytes( 16 ); // long, long
+                    }
+                    break;
+                case 12:
+                    DefinedPacket.readVarInt( packet );
+                    break;
+                default:
+                    throw new IllegalArgumentException( "Unknown meta type " + type );
+            }
+        }
+
+        packet.readerIndex( readerIndex );
+    }
+
+    // Handles simple packets
+    private static void rewrite(ByteBuf packet, int oldId, int newId, boolean[] ints, boolean[] varints)
+    {
+        int readerIndex = packet.readerIndex();
+        int packetId = DefinedPacket.readVarInt( packet );
+        int packetIdLength = packet.readerIndex() - readerIndex;
+
+        if (packetId < 0 || packetId > ints.length || packetId > varints.length) { // Invalid packet id
+            // Ignore these invalid packets for compatibility reasons
+            packet.readerIndex( readerIndex );
+            return;
+        }
+
+        if ( ints[packetId] )
+        {
+            rewriteInt( packet, oldId, newId, readerIndex + packetIdLength );
+        } else if ( varints[packetId] )
+        {
+            rewriteVarInt( packet, oldId, newId, readerIndex + packetIdLength );
+        }
+        packet.readerIndex( readerIndex );
+    }
+}
diff --git a/proxy/src/main/java/net/md_5/bungee/entitymap/EntityMap_1_7_2.java b/proxy/src/main/java/net/md_5/bungee/entitymap/EntityMap_1_7_2.java
new file mode 100644
index 00000000..65c1a9ec
--- /dev/null
+++ b/proxy/src/main/java/net/md_5/bungee/entitymap/EntityMap_1_7_2.java
@@ -0,0 +1,102 @@
+// Travertine start
+package net.md_5.bungee.entitymap;
+
+import io.netty.buffer.ByteBuf;
+import net.md_5.bungee.protocol.DefinedPacket;
+import net.md_5.bungee.protocol.ProtocolConstants;
+
+class EntityMap_1_7_2 extends EntityMap
+{
+
+    static final EntityMap INSTANCE = new EntityMap_1_7_2();
+
+    EntityMap_1_7_2()
+    {
+        addRewrite( 0x04, ProtocolConstants.Direction.TO_CLIENT, false ); // Entity Equipment
+        addRewrite( 0x0A, ProtocolConstants.Direction.TO_CLIENT, false ); // Use bed
+        addRewrite( 0x0B, ProtocolConstants.Direction.TO_CLIENT, true ); // Animation
+        addRewrite( 0x0C, ProtocolConstants.Direction.TO_CLIENT, true ); // Spawn Player
+        addRewrite( 0x0D, ProtocolConstants.Direction.TO_CLIENT, false ); // Collect Item
+        addRewrite( 0x0E, ProtocolConstants.Direction.TO_CLIENT, true ); // Spawn Object
+        addRewrite( 0x0F, ProtocolConstants.Direction.TO_CLIENT, true ); // Spawn Mob
+        addRewrite( 0x10, ProtocolConstants.Direction.TO_CLIENT, true ); // Spawn Painting
+        addRewrite( 0x11, ProtocolConstants.Direction.TO_CLIENT, true ); // Spawn Experience Orb
+        addRewrite( 0x12, ProtocolConstants.Direction.TO_CLIENT, false ); // Entity Velocity
+        addRewrite( 0x14, ProtocolConstants.Direction.TO_CLIENT, false ); // Entity
+        addRewrite( 0x15, ProtocolConstants.Direction.TO_CLIENT, false ); // Entity Relative Move
+        addRewrite( 0x16, ProtocolConstants.Direction.TO_CLIENT, false ); // Entity Look
+        addRewrite( 0x17, ProtocolConstants.Direction.TO_CLIENT, false ); // Entity Look and Relative Move
+        addRewrite( 0x18, ProtocolConstants.Direction.TO_CLIENT, false ); // Entity Teleport
+        addRewrite( 0x19, ProtocolConstants.Direction.TO_CLIENT, false ); // Entity Head Look
+        addRewrite( 0x1A, ProtocolConstants.Direction.TO_CLIENT, false ); // Entity Status
+        addRewrite( 0x1B, ProtocolConstants.Direction.TO_CLIENT, false ); // Attach Entity
+        addRewrite( 0x1C, ProtocolConstants.Direction.TO_CLIENT, false ); // Entity Metadata
+        addRewrite( 0x1D, ProtocolConstants.Direction.TO_CLIENT, false ); // Entity Effect
+        addRewrite( 0x1E, ProtocolConstants.Direction.TO_CLIENT, false ); // Remove Entity Effect
+        addRewrite( 0x20, ProtocolConstants.Direction.TO_CLIENT, false ); // Entity Properties
+        addRewrite( 0x25, ProtocolConstants.Direction.TO_CLIENT, true ); // Block Break Animation
+        addRewrite( 0x2C, ProtocolConstants.Direction.TO_CLIENT, true ); // Spawn Global Entity
+
+        addRewrite( 0x02, ProtocolConstants.Direction.TO_SERVER, false ); // Use Entity
+        addRewrite( 0x0A, ProtocolConstants.Direction.TO_SERVER, false ); // Animation
+        addRewrite( 0x0B, ProtocolConstants.Direction.TO_SERVER, false ); // Entity Action
+    }
+
+    @Override
+    public void rewriteClientbound(ByteBuf packet, int oldId, int newId)
+    {
+        super.rewriteClientbound( packet, oldId, newId );
+
+        //Special cases
+        int readerIndex = packet.readerIndex();
+        int packetId = DefinedPacket.readVarInt( packet );
+        int packetIdLength = packet.readerIndex() - readerIndex;
+        if ( packetId == 0x0D /* Collect Item */ || packetId == 0x1B /* Attach Entity */ )
+        {
+            rewriteInt( packet, oldId, newId, readerIndex + packetIdLength + 4 );
+        } else if ( packetId == 0x13 /* Destroy Entities */ )
+        {
+            int count = packet.getByte( packetIdLength );
+            for ( int i = 0; i < count; i++ )
+            {
+                rewriteInt( packet, oldId, newId, packetIdLength + 1 + i * 4 );
+            }
+        } else if ( packetId == 0x0E /* Spawn Object */ )
+        {
+            DefinedPacket.readVarInt( packet );
+            int type = packet.readUnsignedByte();
+
+            if ( type == 60 || type == 90 )
+            {
+                packet.skipBytes( 14 );
+                int position = packet.readerIndex();
+                int readId = packet.readInt();
+                int changedId = -1;
+                if ( readId == oldId )
+                {
+                    packet.setInt( position, newId );
+                    changedId = newId;
+                } else if ( readId == newId )
+                {
+                    packet.setInt( position, oldId );
+                    changedId = oldId;
+                }
+                if ( changedId != -1 )
+                {
+                    if ( changedId == 0 && readId != 0 )
+                    { // Trim off the extra data
+                        packet.readerIndex( readerIndex );
+                        packet.writerIndex( packet.readableBytes() - 6 );
+                    } else if ( changedId != 0 && readId == 0 )
+                    { // Add on the extra data
+                        packet.readerIndex( readerIndex );
+                        packet.capacity( packet.readableBytes() + 6 );
+                        packet.writerIndex( packet.readableBytes() + 6 );
+                    }
+                }
+            }
+        }
+        packet.readerIndex( readerIndex );
+    }
+}
+// Travertine end
diff --git a/proxy/src/main/java/net/md_5/bungee/entitymap/EntityMap_1_7_6.java b/proxy/src/main/java/net/md_5/bungee/entitymap/EntityMap_1_7_6.java
new file mode 100644
index 00000000..6755fe84
--- /dev/null
+++ b/proxy/src/main/java/net/md_5/bungee/entitymap/EntityMap_1_7_6.java
@@ -0,0 +1,62 @@
+// Travertine start
+package net.md_5.bungee.entitymap;
+
+import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
+import io.netty.buffer.ByteBuf;
+import net.md_5.bungee.BungeeCord;
+import net.md_5.bungee.UserConnection;
+import net.md_5.bungee.connection.LoginResult;
+import net.md_5.bungee.protocol.DefinedPacket;
+
+class EntityMap_1_7_6 extends EntityMap_1_7_2
+{
+
+    static final EntityMap_1_7_6 INSTANCE = new EntityMap_1_7_6();
+
+    @Override
+    @SuppressFBWarnings("DLS_DEAD_LOCAL_STORE")
+    public void rewriteClientbound(ByteBuf packet, int oldId, int newId)
+    {
+        super.rewriteClientbound( packet, oldId, newId );
+
+        int readerIndex = packet.readerIndex();
+        int packetId = DefinedPacket.readVarInt( packet );
+        int packetIdLength = packet.readerIndex() - readerIndex;
+        if ( packetId == 0x0C /* Spawn Player */ )
+        {
+            DefinedPacket.readVarInt( packet );
+            int idLength = packet.readerIndex() - readerIndex - packetIdLength;
+            String uuid = DefinedPacket.readString( packet );
+            String username = DefinedPacket.readString( packet );
+            int props = DefinedPacket.readVarInt( packet );
+            if ( props == 0 )
+            {
+                UserConnection player = (UserConnection) BungeeCord.getInstance().getPlayer( username );
+                if ( player != null )
+                {
+                    LoginResult profile = player.getPendingConnection().getLoginProfile();
+                    if ( profile != null && profile.getProperties() != null
+                            && profile.getProperties().length >= 1 )
+                    {
+                        ByteBuf rest = packet.copy();
+                        packet.readerIndex( readerIndex );
+                        packet.writerIndex( readerIndex + packetIdLength + idLength );
+                        DefinedPacket.writeString( player.getUniqueId().toString(), packet );
+                        DefinedPacket.writeString( username, packet );
+                        DefinedPacket.writeVarInt( profile.getProperties().length, packet );
+                        for ( LoginResult.Property property : profile.getProperties() )
+                        {
+                            DefinedPacket.writeString( property.getName(), packet );
+                            DefinedPacket.writeString( property.getValue(), packet );
+                            DefinedPacket.writeString( property.getSignature(), packet );
+                        }
+                        packet.writeBytes( rest );
+                        rest.release();
+                    }
+                }
+            }
+        }
+        packet.readerIndex( readerIndex );
+    }
+}
+// Travertine end
diff --git a/proxy/src/main/java/net/md_5/bungee/forge/ForgeClientHandler.java b/proxy/src/main/java/net/md_5/bungee/forge/ForgeClientHandler.java
index c1272da3..45af7ea4 100644
--- a/proxy/src/main/java/net/md_5/bungee/forge/ForgeClientHandler.java
+++ b/proxy/src/main/java/net/md_5/bungee/forge/ForgeClientHandler.java
@@ -8,6 +8,7 @@ import lombok.Getter;
 import lombok.NonNull;
 import lombok.RequiredArgsConstructor;
 import lombok.Setter;
+import net.md_5.bungee.BungeeCord;
 import net.md_5.bungee.UserConnection;
 import net.md_5.bungee.protocol.ProtocolConstants;
 import net.md_5.bungee.protocol.packet.EntityRemoveEffect;
@@ -23,6 +24,12 @@ public class ForgeClientHandler
     @NonNull
     private final UserConnection con;
 
+    // Travertine start
+    @Getter
+    @Setter(AccessLevel.PACKAGE)
+    private boolean forgeOutdated = false;
+    // Travertine end
+
     /**
      * The users' mod list.
      */
@@ -173,4 +180,22 @@ public class ForgeClientHandler
     {
         return fmlTokenInHandshake || clientModList != null;
     }
+
+    // Travertine start
+    /**
+      * Checks to see if a user is using an outdated FML build, and takes
+      * appropriate action on the User side. This should only be called during a
+      * server connection, by the ServerConnector
+      *
+      * @return <code>true</code> if the user's FML build is outdated, otherwise
+      * <code>false</code>
+      */
+    public boolean checkUserOutdated() {
+        if (forgeOutdated) {
+            con.disconnect( BungeeCord.getInstance().getTranslation("connect_kick_outdated_forge") );
+        }
+        return forgeOutdated;
+    }
+    // Travertine end
+
 }
diff --git a/proxy/src/main/java/net/md_5/bungee/forge/ForgeClientHandshakeState.java b/proxy/src/main/java/net/md_5/bungee/forge/ForgeClientHandshakeState.java
index 5e02f8c8..e3c1b9b9 100644
--- a/proxy/src/main/java/net/md_5/bungee/forge/ForgeClientHandshakeState.java
+++ b/proxy/src/main/java/net/md_5/bungee/forge/ForgeClientHandshakeState.java
@@ -3,6 +3,7 @@ package net.md_5.bungee.forge;
 import java.util.Map;
 import net.md_5.bungee.ServerConnector;
 import net.md_5.bungee.UserConnection;
+import net.md_5.bungee.protocol.ProtocolConstants;
 import net.md_5.bungee.protocol.packet.PluginMessage;
 
 /**
@@ -84,6 +85,22 @@ enum ForgeClientHandshakeState implements IForgeClientPacketHandler<ForgeClientH
                     // Once we've done it, no point doing it again.
                     Map<String, String> clientModList = ForgeUtils.readModList( message );
                     con.getForgeClientHandler().setClientModList( clientModList );
+                    // Travertine start
+                    // If the user is below 1.8, we need to check the version of FML - it's not always an OK version.
+                    if ( ProtocolConstants.isBeforeOrEq( con.getPendingConnection().getVersion(), ProtocolConstants.MINECRAFT_1_7_6 ) )
+                    {
+                        // Get the version from the mod list.
+                        int buildNumber = ForgeUtils.getFmlBuildNumber( clientModList );
+
+                        // If we get 0, we're probably using a testing build, so let it though. Otherwise, check the build number.
+                        if ( buildNumber < ForgeConstants.FML_MIN_BUILD_VERSION && buildNumber != 0 )
+                        {
+                            // Mark the user as an old Forge user. This will then cause any Forge ServerConnectors to cancel any
+                            // connections to it.
+                            con.getForgeClientHandler().setForgeOutdated( true );
+                        }
+                    }
+                    // Travertine end
                 }
 
                 return WAITINGSERVERDATA;
diff --git a/proxy/src/main/java/net/md_5/bungee/tab/ServerUnique.java b/proxy/src/main/java/net/md_5/bungee/tab/ServerUnique.java
index daf12f74..e33861ab 100644
--- a/proxy/src/main/java/net/md_5/bungee/tab/ServerUnique.java
+++ b/proxy/src/main/java/net/md_5/bungee/tab/ServerUnique.java
@@ -4,12 +4,14 @@ import java.util.Collection;
 import java.util.HashSet;
 import java.util.UUID;
 import net.md_5.bungee.api.connection.ProxiedPlayer;
+import net.md_5.bungee.protocol.ProtocolConstants;
 import net.md_5.bungee.protocol.packet.PlayerListItem;
 
 public class ServerUnique extends TabList
 {
 
     private final Collection<UUID> uuids = new HashSet<>();
+    private final Collection<String> usernames = new HashSet<>(); // Travertine - Support for <=1.7.9
 
     public ServerUnique(ProxiedPlayer player)
     {
@@ -23,10 +25,26 @@ public class ServerUnique extends TabList
         {
             if ( playerListItem.getAction() == PlayerListItem.Action.ADD_PLAYER )
             {
-                uuids.add( item.getUuid() );
+                // Travertine start
+                if ( item.getUuid() != null )
+                {
+                    uuids.add( item.getUuid() );
+                } else
+                {
+                    usernames.add( item.getUsername() );
+                }
+                // Travertine end
             } else if ( playerListItem.getAction() == PlayerListItem.Action.REMOVE_PLAYER )
             {
-                uuids.remove( item.getUuid() );
+                // Travertine start
+                if ( item.getUuid() != null )
+                {
+                    uuids.remove( item.getUuid() );
+                } else
+                {
+                    usernames.remove( item.getUsername() );
+                }
+                // Travertine end
             }
         }
         player.unsafe().sendPacket( playerListItem );
@@ -43,16 +61,44 @@ public class ServerUnique extends TabList
     {
         PlayerListItem packet = new PlayerListItem();
         packet.setAction( PlayerListItem.Action.REMOVE_PLAYER );
-        PlayerListItem.Item[] items = new PlayerListItem.Item[ uuids.size() ];
+        PlayerListItem.Item[] items = new PlayerListItem.Item[ uuids.size() + usernames.size() ]; // Travertine
         int i = 0;
         for ( UUID uuid : uuids )
         {
             PlayerListItem.Item item = items[i++] = new PlayerListItem.Item();
             item.setUuid( uuid );
         }
+        // Travertine start
+        for ( String username : usernames )
+        {
+            PlayerListItem.Item item = items[i++] = new PlayerListItem.Item();
+            item.setUsername( username );
+            item.setDisplayName( username );
+        }
+        // Travertine end
         packet.setItems( items );
-        player.unsafe().sendPacket( packet );
+        // Travertine start
+        if ( ProtocolConstants.isAfterOrEq( player.getPendingConnection().getVersion(), ProtocolConstants.MINECRAFT_1_8 ) )
+        {
+            player.unsafe().sendPacket( packet );
+        } else
+        {
+            // Split up the packet
+            for ( PlayerListItem.Item item : packet.getItems() )
+            {
+                PlayerListItem p2 = new PlayerListItem();
+                p2.setAction( packet.getAction() );
+
+                p2.setItems( new PlayerListItem.Item[]
+                        {
+                                item
+                        } );
+                player.unsafe().sendPacket( p2 );
+            }
+        }
+        // Travertine end
         uuids.clear();
+        usernames.clear(); // Travertine
     }
 
     @Override
-- 
2.20.1