net.minecraft.network

Class
ClientConnection
ClientConnection$1
ClientConnection$2
NetworkState$InternalPacketHandler
NetworkState$PacketHandler
NetworkState$PacketHandlerInitializer
NetworkThreadUtils
OffThreadException
PacketByteBuf
PacketCallbacks$1
PacketCallbacks$2
RateLimitedConnection

Interface
PacketByteBuf$PacketReader
PacketByteBuf$PacketWriter
PacketCallbacks
QueryableServer

Enum
NetworkSide
NetworkState