private void CloseTunDev(IntPtr handle)
{
if (handle != IntPtr.Zero)
{
NativeNetif.CloseHandle(handle);
}
}
protected bool DeviceIoControl(uint commands, byte[] contents)
{
IntPtr hEvent = NativeNetif.CreateEvent(IntPtr.Zero, false, false, null);
try
{
NativeNetif.OVERLAPPED overlapped = new NativeNetif.OVERLAPPED();
overlapped.hEvent = hEvent;
uint dw = 0;
uint content_size = 0;
if (contents == null)
{
if (!NativeNetif.DeviceIoControl(this.Handle, commands,
contents, 0, contents, 0, ref dw, ref overlapped))
{
NativeNetif.WaitForSingleObject(hEvent, Timeout.Infinite);
return(overlapped.Internal == NativeNetif.ERROR_SUCCESS);
}
}
else
{
content_size = (uint)contents.Length;
if (!NativeNetif.DeviceIoControl(this.Handle, commands,
contents, content_size, contents, content_size, ref dw, ref overlapped))
{
NativeNetif.WaitForSingleObject(hEvent, Timeout.Infinite);
return(overlapped.Internal == NativeNetif.ERROR_SUCCESS);
}
}
return(true);
}
finally
{
if (hEvent != IntPtr.Zero)
{
NativeNetif.CloseHandle(hEvent);
}
}
}