public ITransportPacket CreateFromRaw(ProtocolType type, byte[] rawPacket, IApplicationPacketFactory applicationPacketFactory)
{
switch (type)
{
case ProtocolType.Udp:
return(UdpPacket.CreateFromRaw(applicationPacketFactory, rawPacket));
default:
throw new NotSupportedException("Protocol type not supported!");
}
}
public static UdpPacket CreateFromRaw(IApplicationPacketFactory applicationPacketFactory, byte[] rawPacket)
{
UdpPacket packet = new UdpPacket();
using (var reader = new BinaryReader(new MemoryStream(rawPacket)))
{
packet.SourcePort = (ushort)IPAddress.NetworkToHostOrder(reader.ReadInt16());
packet.DestinationPort = (ushort)IPAddress.NetworkToHostOrder(reader.ReadInt16());
ushort totalLength = (ushort)IPAddress.NetworkToHostOrder(reader.ReadInt16());
ushort checksum = (ushort)IPAddress.NetworkToHostOrder(reader.ReadInt16());
ushort payloadLength = (ushort)(totalLength - 8);
byte[] payloadData = reader.ReadBytes(payloadLength);
packet.Payload = applicationPacketFactory.CreateFromRaw(packet.DestinationPort, payloadData);
}
return(packet);
}
