private void PacketReceiverModernAsync(IAsyncResult ar)
{
if (_baseSock == null || _stream == null || !Connected || Crashed)
{
return; // -- Terminate cycle
}
if (_baseSock.Available > 0)
{
int packetId = 0;
byte[] data = new byte[0];
#region No Compression
if (!CompressionEnabled)
{
var packetLength = _stream.ReadVarInt();
if (packetLength == 0)
{
throw new Exception("Reading Error: Packet Length size is 0");
}
packetId = _stream.ReadVarInt();
data = _stream.ReadByteArray(packetLength - 1);
}
#endregion
#region Compression
else // (CompressionEnabled)
{
var packetLength = _stream.ReadVarInt();
if (packetLength == 0)
{
throw new Exception("Reading Error: Packet Length size is 0");
}
var dataLength = _stream.ReadVarInt();
if (dataLength == 0)
{
if (packetLength >= CompressionThreshold)
{
throw new Exception("Reading Error: Received uncompressed message of size " + packetLength +
" greater than threshold " + CompressionThreshold);
}
packetId = _stream.ReadVarInt();
data = _stream.ReadByteArray(packetLength - 2);
}
else // (dataLength > 0)
{
var dataLengthBytes = MinecraftStream.GetVarIntBytes(dataLength).Length;
var tempBuff = _stream.ReadByteArray(packetLength - dataLengthBytes); // -- Compressed
using (var outputStream = new MemoryStream())
using (var inputStream = new InflaterInputStream(new MemoryStream(tempBuff)))
//using (var reader = new MinecraftDataReader(new MemoryStream(tempBuff), NetworkMode))
{
inputStream.CopyTo(outputStream);
tempBuff = outputStream.ToArray(); // -- Decompressed
packetId = tempBuff[0]; // -- Only 255 packets available. ReadVarInt doesn't work.
var packetIdBytes = MinecraftStream.GetVarIntBytes(packetId).Length;
data = new byte[tempBuff.Length - packetIdBytes];
Buffer.BlockCopy(tempBuff, packetIdBytes, data, 0, data.Length);
}
}
}
#endregion
OnDataReceived(packetId, data);
}
// -- If it will throw an error, then the cause is too slow _stream dispose
_stream.EndRead(ar);
_stream.BeginRead(new byte[0], 0, 0, PacketReceiverModernAsync, null);
}