public void ReadFromStream(IPacketCodec rawCodec, PacketBoundTo boundTo, Func <int> compressThresholdCallback, Func <ProtocolState> stateCallback)
{
BoundTo = boundTo;
State = stateCallback();
var length = rawCodec.ReadVarInt(); // Length of Packet ID + Data
PacketLength = length;
var threshold = compressThresholdCallback();
int dataLength;
using var recvStream = new MemoryStream(); //no extra bytes read
rawCodec.CopyTo(recvStream, length);
var recvCodec = rawCodec.Clone(recvStream);
recvStream.Position = 0;
if (threshold == 0 || (dataLength = recvCodec.ReadVarInt()) < threshold)
{
DataLength = length;
recvCodec.CopyTo(BaseStream, length);
BaseStream.Position = 0;
PacketId = Content.ReadVarInt();
return;
}
DataLength = dataLength;
using var compressedStream = new InflaterInputStream(recvStream)
{
IsStreamOwner = false
};
rawCodec.Clone(compressedStream).CopyTo(BaseStream, dataLength);
BaseStream.Position = 0;
PacketId = Content.ReadVarInt();
}
public bool TryCreatePacket(int packetId, PacketBoundTo boundTo, ProtocolState state, out IPacket packet)
{
packet = _packetInfo.FirstOrDefault(info =>
info.PacketId == packetId &&
info.BoundTo == boundTo &&
(info.State == state || info.State == ProtocolState.Any)
)?.Constructor();
return(packet != null);
}
public ProtocolAdapterBase(Stream baseStream, PacketBoundTo boundTo)
{
BaseStream = baseStream;
BufferedReadStream = new BufferedStream(baseStream);
BufferedWriteStream = new BufferedStream(baseStream);
_rawReadCodec = DefaultCodec.Clone(BufferedReadStream);
_rawWriteCodec = DefaultCodec.Clone(BufferedWriteStream);
BoundTo = boundTo;
RemoteBoundTo = boundTo switch
{
PacketBoundTo.Client => PacketBoundTo.Server,
PacketBoundTo.Server => PacketBoundTo.Client,
_ => default
};
}
public MCVer756ProtocolAdapter(Stream baseStream, PacketBoundTo boundTo) : base(baseStream, boundTo)
{
}