public TcpPacket DeserializePacket(StreamBuffer streamBuffer)
{
TcpPacketHeader packetHeader = DeserializeHeader(streamBuffer);
int packetDataLength = packetHeader.length - Defines.PACKET_HEADER_LENGTH;
TcpPacket packet = new TcpPacket();
byte[] dataBuffer = new byte[packetDataLength];
Array.Copy(streamBuffer.Buffer, Defines.PACKET_HEADER_LENGTH, dataBuffer, 0, packetDataLength);
packet.Initialize(dataBuffer, packetDataLength);
packet.SetHeader(packetHeader);
if (streamBuffer.RemainLength - packetHeader.length > 0)
{
Array.Copy(streamBuffer.Buffer, packetHeader.length,
streamBuffer.Buffer, 0, streamBuffer.RemainLength - packetHeader.length);
}
int remainLength = streamBuffer.RemainLength;
remainLength -= packetHeader.length;
streamBuffer.RemainLength = remainLength;
if (streamBuffer.RemainLength <= 0)
{
remainLength = 0;
Array.Clear(streamBuffer.Buffer, 0, streamBuffer.Buffer.Length);
}
return(packet);
}
public void SetHeader(int protocol, int extra)
{
TcpPacketHeader header = new TcpPacketHeader();
header.length = Defines.PACKET_HEADER_LENGTH + this.stream.Offset;
header.protocol = protocol;
header.extra = extra;
this.header = header;
}
public TcpPacketHeader DeserializeHeader(StreamBuffer streamBuffer)
{
TcpPacketHeader header = new TcpPacketHeader();
header.length = BitConverter.ToInt32(streamBuffer.Buffer, 0);
header.protocol = BitConverter.ToInt32(streamBuffer.Buffer, 4);
header.extra = BitConverter.ToInt32(streamBuffer.Buffer, 8);
return(header);
}
public byte[] SerializeHeader(TcpPacket packet)
{
byte[] data = new byte[Defines.PACKET_HEADER_LENGTH];
TcpPacketHeader header = packet.header;
Array.Copy(BitConverter.GetBytes(header.length), 0, data, 0, 4);
Array.Copy(BitConverter.GetBytes(header.protocol), 0, data, 4, 4);
Array.Copy(BitConverter.GetBytes(header.extra), 0, data, 8, 4);
return(data);
}
public bool IsMakePacket(StreamBuffer streamBuffer)
{
if (streamBuffer.RemainLength >= Defines.PACKET_HEADER_LENGTH)
{
TcpPacketHeader header = DeserializeHeader(streamBuffer);
if (header.length > Defines.MAX_BUFFER_LENGTH || header.length <= 0)
{
// 패킷의 길이가 이상하면 잘못된 패킷
streamBuffer.RemainLength = 0;
return(false);
}
if (streamBuffer.RemainLength >= header.length)
{
return(true);
}
}
return(false);
}
public void SetHeader(TcpPacketHeader header)
{
this.header = header;
}
