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#3810: Use retainedSlice if possible in MinecraftDecoder

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Outfluencer 2025-04-19 15:40:09 +10:00 committed by md_5
parent 26433bf021
commit 1279cca971
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GPG Key ID: E8E901AC7C617C11
3 changed files with 22 additions and 23 deletions
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23
protocol/src/main/java/net/md_5/bungee/protocol/MinecraftDecoder.java
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@ -12,12 +12,17 @@ import lombok.Setter;
public class MinecraftDecoder extends MessageToMessageDecoder<ByteBuf>
{
public MinecraftDecoder(Protocol protocol, boolean server, int protocolVersion)
{
this( protocol, server, protocolVersion, shouldCopyBuffer( protocol, protocolVersion ) );
}
@Getter
@Setter
private Protocol protocol;
private final boolean server;
@Setter
private int protocolVersion;
private boolean copyBuffer;
@Override
protected void decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) throws Exception
@ -30,8 +35,7 @@ public class MinecraftDecoder extends MessageToMessageDecoder<ByteBuf>
}
Protocol.DirectionData prot = ( server ) ? protocol.TO_SERVER : protocol.TO_CLIENT;
ByteBuf slice = in.copy(); // Can't slice this one due to EntityMap :(
ByteBuf slice = ( copyBuffer ) ? in.copy() : in.retainedSlice();
try
{
int packetId = DefinedPacket.readVarInt( in );
@ -60,4 +64,17 @@ public class MinecraftDecoder extends MessageToMessageDecoder<ByteBuf>
}
}
}
public void setProtocol(Protocol protocol)
{
this.protocol = protocol;
this.copyBuffer = shouldCopyBuffer( protocol, protocolVersion );
}
private static boolean shouldCopyBuffer(Protocol protocol, int protocolVersion)
{
// We only use the entity map in game state, we can avoid many buffer copies by checking this
// EntityMap is removed for 1.20.2 and up
return protocol == Protocol.GAME && protocolVersion < ProtocolConstants.MINECRAFT_1_20_2;
}
}

16
proxy/src/main/java/net/md_5/bungee/entitymap/EntityMap.java
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@ -82,21 +82,9 @@ public abstract class EntityMap
case ProtocolConstants.MINECRAFT_1_19_4:
case ProtocolConstants.MINECRAFT_1_20:
return EntityMap_1_16_2.INSTANCE_1_19_4;
case ProtocolConstants.MINECRAFT_1_20_2:
return EntityMap_1_16_2.INSTANCE_1_20_2;
case ProtocolConstants.MINECRAFT_1_20_3:
return EntityMap_1_16_2.INSTANCE_1_20_3;
case ProtocolConstants.MINECRAFT_1_20_5:
case ProtocolConstants.MINECRAFT_1_21:
return EntityMap_1_16_2.INSTANCE_1_20_5;
case ProtocolConstants.MINECRAFT_1_21_2:
return EntityMap_1_16_2.INSTANCE_1_21_2;
case ProtocolConstants.MINECRAFT_1_21_4:
return EntityMap_1_16_2.INSTANCE_1_21_4;
case ProtocolConstants.MINECRAFT_1_21_5:
return EntityMap_1_16_2.INSTANCE_1_21_5;
default:
return null;
}
throw new RuntimeException( "Version " + version + " has no entity map" );
}
protected void addRewrite(int id, ProtocolConstants.Direction direction, boolean varint)

6
proxy/src/main/java/net/md_5/bungee/entitymap/EntityMap_1_16_2.java
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@ -20,12 +20,6 @@ class EntityMap_1_16_2 extends EntityMap
static final EntityMap_1_16_2 INSTANCE_1_19 = new EntityMap_1_16_2( 0x02, 0x2F );
static final EntityMap_1_16_2 INSTANCE_1_19_1 = new EntityMap_1_16_2( 0x02, 0x30 );
static final EntityMap_1_16_2 INSTANCE_1_19_4 = new EntityMap_1_16_2( 0x03, 0x30 );
static final EntityMap_1_16_2 INSTANCE_1_20_2 = new EntityMap_1_16_2( -1, 0x33 );
static final EntityMap_1_16_2 INSTANCE_1_20_3 = new EntityMap_1_16_2( -1, 0x34 );
static final EntityMap_1_16_2 INSTANCE_1_20_5 = new EntityMap_1_16_2( -1, 0x37 );
static final EntityMap_1_16_2 INSTANCE_1_21_2 = new EntityMap_1_16_2( -1, 0x39 );
static final EntityMap_1_16_2 INSTANCE_1_21_4 = new EntityMap_1_16_2( -1, 0x3B );
static final EntityMap_1_16_2 INSTANCE_1_21_5 = new EntityMap_1_16_2( -1, 0x3C );
//
private final int spawnPlayerId;
private final int spectateId;