internal TcpConnectionInformation(MIB_TCPROW row)
{
this.state = (TcpState)row.dwState;
int localPort = (int)(((row.dwLocalPort & 0xff000000) >> 8) | ((row.dwLocalPort & 0xff0000) << 8) | ((row.dwLocalPort & 0xFF00) >> 8) | ((row.dwLocalPort & 0xff) << 8)); //((ushort)Marshal.ReadInt16(bufferPtr, 8 + (i * 8)) >> 8) | (ushort)Marshal.ReadInt16(bufferPtr, 10 + (i * 8)); row.dwLocalPort;// (((row.localPort3 << 0x18) | (row.localPort4 << 0x10)) | (row.localPort1 << 8)) | row.localPort2;
int remotePort = (int)((this.state == TcpState.Listen) ? 0 : (int)(((row.dwRemotePort & 0xff000000) >> 8) | ((row.dwRemotePort & 0xff0000) << 8) | ((row.dwRemotePort & 0xFF00) >> 8) | ((row.dwRemotePort & 0xff) << 8))); //((row.dwRemotePort & 0xFFFF0000) >> 16) | ((row.dwRemotePort & 0xffff) << 16));// ((((row.remotePort3 << 0x18) | (row.remotePort4 << 0x10)) | (row.remotePort1 << 8)) | row.remotePort2);
this.localEndPoint = new IPEndPoint((long)row.dwLocalAddr, localPort);
this.remoteEndPoint = new IPEndPoint((long)row.dwRemoteAddr, remotePort);
}
private TcpConnectionInformation[] GetAllTcpConnections()
{
int bufferLen = 0;
IntPtr bufferPtr = IntPtr.Zero;
TcpConnectionInformation[] informationArray = null;
int result = NativeMethods.GetTcpTable(bufferPtr, ref bufferLen, true);
while (result == 0x7a)
{
try
{
bufferPtr = Marshal.AllocHGlobal(bufferLen);
result = NativeMethods.GetTcpTable(bufferPtr, ref bufferLen, true);
if (result == 0)
{
int numberOfEntries = Marshal.ReadInt32(bufferPtr);
if (numberOfEntries > 0)
{
informationArray = new TcpConnectionInformation[numberOfEntries];
for (int i = 0; i < numberOfEntries; i++)
{
MIB_TCPROW row = (MIB_TCPROW)Marshal.PtrToStructure(IntPtrInTheHand.Add(bufferPtr, 4 + (i * 20)), typeof(MIB_TCPROW));
informationArray[i] = new TcpConnectionInformation(row);
}
}
}
continue;
}
finally
{
if (bufferPtr != IntPtr.Zero)
{
Marshal.FreeHGlobal(bufferPtr);
bufferPtr = IntPtr.Zero;
}
}
}
if ((result != 0) && (result != 0xe8))
{
throw new NetworkInformationException((int)result);
}
if (informationArray == null)
{
return(new TcpConnectionInformation[0]);
}
return(informationArray);
}
