protected override void DecodePacket()
{
_reader.Position = 0;
Header = new DatagramHeader(ReadByte());
Header.DatagramSequenceNumber = ReadLittle();
// End datagram, online packet starts
Messages = new List <Packet>();
while (!_reader.Eof)
{
byte flags = ReadByte();
var header = new ReliabilityHeader();
header.Reliability = (Reliability)((flags & 0b011100000) >> 5);
header.HasSplit = (flags & 0b00010000) > 0;
short dataBitLength = ReadShort(true);
switch (header.Reliability)
{
case Reliability.Reliable:
case Reliability.ReliableSequenced:
case Reliability.ReliableOrdered:
header.ReliableMessageNumber = ReadLittle();
break;
}
switch (header.Reliability)
{
case Reliability.UnreliableSequenced:
case Reliability.ReliableSequenced:
header.SequencingIndex = ReadLittle();
break;
}
switch (header.Reliability)
{
case Reliability.UnreliableSequenced:
case Reliability.ReliableSequenced:
case Reliability.ReliableOrdered:
case Reliability.ReliableOrderedWithAckReceipt:
header.OrderingIndex = ReadLittle();
header.OrderingChannel = ReadByte(); // flags
break;
}
if (header.HasSplit)
{
header.PartCount = ReadInt(true);
header.PartId = ReadShort(true);
header.PartIndex = ReadInt(true);
}
// Slurp the payload
int messageLength = (int)Math.Ceiling((((double)dataBitLength) / 8));
ReadOnlyMemory <byte> internalBuffer = Slice(messageLength);
if (internalBuffer.Length != messageLength)
{
Log.Error($"Didn't get expected length {internalBuffer.Length}");
}
if (internalBuffer.Length == 0)
{
Log.Error($"Read length {internalBuffer.Length}, expected {messageLength}");
}
if (messageLength == 0)
{
continue;
}
//if(header.Reliability != Reliability.ReliableOrdered) Log.Error($"Parsing message {internalBuffer.Span[0]} with reliability={header.Reliability}");
if (header.HasSplit)
{
var splitPartPacket = SplitPartPacket.CreateObject();
splitPartPacket.ReliabilityHeader = header;
splitPartPacket.Id = internalBuffer.Span[0];
splitPartPacket.Message = internalBuffer;
Messages.Add(splitPartPacket);
if (Log.IsDebugEnabled && _reader.Position < _reader.Length)
{
Log.Debug($"Got split message, but more to read {_reader.Length - _reader.Position}");
}
}
else
{
byte id = internalBuffer.Span[0];
Packet packet = PacketFactory.Create(id, internalBuffer, "raknet") ?? new UnknownPacket(id, internalBuffer.ToArray());
packet.ReliabilityHeader = header;
Messages.Add(packet);
}
if (Log.IsDebugEnabled && messageLength != internalBuffer.Length)
{
Log.Debug("Mismatch of requested length, and actual read length");
}
}
}