"vLabz" <vLabz@discussions.microsoft.com> wrote in message
news:DD215320-189E-44DB-A617-CF73246341E5@microsoft.com...
> Hi,
> On our Win2k servers, we analyse the FTP logs in order to determine
> whether
> or not our clients have fully downloaded payable content (with a payback
> mechanism for unfinished or abandonned downloads). We assume the file
> transfer is ok when we come accross a 226 status with a > 0 bytessent.
>
> We figured out recently that this assumption is wrong. It is possible for
> a
> file to be fully downloaded without meeting the above line in the log. In
> such cases, we found a win32status 997 "Overlapped I/O operation is in
> progress." in the log. ex:
>
> (bytessent, servicestatus, win32status, operation, target)
> 0 226 0 [6038]sent 144_060901_115827906.zip
> 0 426 997 [6038]sent 144_060901_115827906.zip
> 0 226 0 [6038]sent 144_060901_115827906.zip
>
> (there are no more lines in the logs for this file)
>
> I'm a bit desapointed regarding to IIS FTP server. We might plan to move
> to
> Windows 2003 to see if the problem persists, and using another FTP server
> is
> also an option.
> For now, I'm trying to find out the cause of those I/O errors, but I don't
> even know if they concern disk I/O or network I/O.
>
> Any help or advice would be appreciated.
>
>