public CNetData Encode(CMessage msg)
{
ushort id = msg.GetID();
CNetData data = new CNetData(4096);
SGTMsgHeader head = new SGTMsgHeader();
head.wMsgID = id;
head.Encode(data);
EncoderFunc pfnEncode = FindEncodeFunc(id);
if (null == pfnEncode)
{
return(null);
}
if (-1 == pfnEncode(msg, ref data))
{
return(null);
}
head.wDataLen = (ushort)(data.GetDataLen() - 8);
head.wCheckSum = (ushort)((head.wDataLen ^ 0xBBCC) & 0x88AA);
data.Replace(0, BitConverter.GetBytes(CNetData.Inverse(head.wCheckSum)));
data.Replace(4, BitConverter.GetBytes(CNetData.Inverse(head.wDataLen)));
return(data);
}
public static uint ParsePackage(ref byte[] data, uint offset, uint size)
{
//包头不完整
if (size < 14)
{
return(0);
}
else
{
int temp = (int)offset + DATA_LEN_OFFSET;
ushort iDataLen = CNetData.Inverse(Helper.ReadU16(data, ref temp));
temp = (int)offset + MSG_OFFSET;
ushort iMsgID = CNetData.Inverse(Helper.ReadU16(data, ref temp));
{
if (iDataLen + 8 <= size) //大于一个包
{
return((uint)iDataLen + 8);
}
else //包内容不完整
{
return(0);
}
}
}
}