private void FullCheckSum(byte[] byPacket)
{
uint sum = RAWDefine.CheckSum(byPacket, byPacket.Length);
byPacket[2] = (byte)sum;
byPacket[3] = (byte)(sum >> 8);
}
public static uint GetSynPacket(byte[] byBuffer, uint uSIP, uint uDIP, ushort usSPort, ushort usDPort, uint uSeq)
{
Array.Copy(m_bySyn, byBuffer, m_bySyn.Length);
uint useq = RAWDefine.SetSynData(byBuffer, uSIP, uDIP, usSPort, usDPort, uSeq);
RAWDefine.CheckSum(byBuffer);
return(useq);
}
private static void CheckSum(byte[] bySyn)
{
lock (m_byPsd) {
m_byPsd[0] = bySyn[12];
m_byPsd[1] = bySyn[13];
m_byPsd[2] = bySyn[14];
m_byPsd[3] = bySyn[15];
m_byPsd[4] = bySyn[16];
m_byPsd[5] = bySyn[17];
m_byPsd[6] = bySyn[18];
m_byPsd[7] = bySyn[19];
Array.Copy(m_byPsd, m_byTemp, 12);
Array.Copy(bySyn, 20, m_byTemp, 12, 20);
ushort usSum = RAWDefine.CheckSum(m_byTemp, m_byTemp.Length);
bySyn[36] = (byte)(usSum);
bySyn[37] = (byte)(usSum >> 8);
usSum = RAWDefine.CheckSum(bySyn, 20);
bySyn[10] = (byte)(usSum);
bySyn[11] = (byte)(usSum >> 8);
}
}
private TaskInfo CreateTaskInfo(IPAddress ipAddr, int nRetry, byte[] byData)
{
TaskInfo ti = null;
lock (m_que_taskInfo) ti = m_que_taskInfo.Dequeue();
if (byData != null)
{
if (byData.Length > 1400)
{
throw new ArgumentException("The [byData.Length] must less than 1400");
}
if (byData.Length + ti.HeadPacket.Length > ti.TempPacket.Length)
{
ti.TempPacket = new byte[byData.Length + ti.HeadPacket.Length];
Array.Copy(ti.HeadPacket, ti.TempPacket, ti.HeadPacket.Length);
Array.Copy(byData, 0, ti.TempPacket, ti.HeadPacket.Length, byData.Length);
}
ti.DataLen = ti.HeadPacket.Length + byData.Length;
}
else
{
ti.DataLen = ti.HeadPacket.Length + 1;
Array.Copy(ti.HeadPacket, ti.TempPacket, ti.HeadPacket.Length);
lock (m_rnd) ti.TempPacket[ti.HeadPacket.Length] = (byte)m_rnd.Next('a', 'z');
}
ti.TempPacket[2] = 0;
ti.TempPacket[3] = 0;
uint sum = RAWDefine.CheckSum(ti.TempPacket, ti.TempPacket.Length);
ti.TempPacket[2] = (byte)sum;
ti.TempPacket[3] = (byte)(sum >> 8);
ti.EndPoint = new IPEndPoint(ipAddr, 0);
ti.Retry = nRetry;
ti.RunedRetry = 0;
return(ti);
}
