BITS on Vista Issue

We have a custom application which uses BITS to upload and download files.
Works on all OSs and most of the time on Vista. Several cases, though, where
BITS downloads the file, creating the hidden temporary file, but doesn't
complete the download by renaming the file. When you look at the job status
in BITSADMIN, it shows a successful file transfer. I've seen nothing on the
problem looking around the Internet. The only BITS references I've seen have
to do with Vista BITS becoming corrupt. However, that isn't the problem and
if you run the published fix for it, the fix states that it isn't needed.
Just wondering if anyone has heard of a fix for this specific issue.

I have seen what you describe, too. I found that it was always caused by a
'wait' in the connection. Some slowness that seems to trigger a 'download
complete'. If the download fails, the expected behavior is to keep the
remnant file, and continue if re-connected or retried. (Z-modem protocol).
It's the main point of using BITS. Vista seems to have some problem there.
My workaround may not work for you, but what I did was establish half-duplex
on the ethernet card properties, (since this is available to me for the
connection I use, thru a router). I find the 'wait' of a one way
conversation seems to overcome the moments of slowness in my Inet
connection.
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Mark L. Ferguson

"GarySSpaulding" <GarySSpaulding@discussions.microsoft.com> wrote in message
news:E7E57F06-5014-4870-9C9A-C5973F612CD1@microsoft.com...
> We have a custom application which uses BITS to upload and download files.
> Works on all OSs and most of the time on Vista. Several cases, though,
> where
> BITS downloads the file, creating the hidden temporary file, but doesn't
> complete the download by renaming the file. When you look at the job
> status
> in BITSADMIN, it shows a successful file transfer. I've seen nothing on
> the
> problem looking around the Internet. The only BITS references I've seen
> have
> to do with Vista BITS becoming corrupt. However, that isn't the problem
> and
> if you run the published fix for it, the fix states that it isn't needed.
> Just wondering if anyone has heard of a fix for this specific issue.

Mark, thanks for the response. The connectivity in both firms at which I saw
the problem is cable modem or higher (T1), so I don't think there's an issue
with waiting. Unfortunately, I can't test your theory since these
environments aren't mine to control, but the wait, in my opinion, would have
to be fairly long in order to affect the rename process. I don't know if SP1
will address what may be a glitch, since other Vista installs work fine.

"Mark L. Ferguson" wrote:

> I have seen what you describe, too. I found that it was always caused by a
> 'wait' in the connection. Some slowness that seems to trigger a 'download
> complete'. If the download fails, the expected behavior is to keep the
> remnant file, and continue if re-connected or retried. (Z-modem protocol).
> It's the main point of using BITS. Vista seems to have some problem there.
> My workaround may not work for you, but what I did was establish half-duplex
> on the ethernet card properties, (since this is available to me for the
> connection I use, thru a router). I find the 'wait' of a one way
> conversation seems to overcome the moments of slowness in my Inet
> connection.
> --
> Was this helpful? Then click the "Yes" Ratings button. Voting helps the web
> interface.
> http://www.microsoft.com/wn3/locale...s.htm#RateAPost
>
> Mark L. Ferguson
>
> "GarySSpaulding" <GarySSpaulding@discussions.microsoft.com> wrote in message
> news:E7E57F06-5014-4870-9C9A-C5973F612CD1@microsoft.com...
> > We have a custom application which uses BITS to upload and download files.
> > Works on all OSs and most of the time on Vista. Several cases, though,
> > where
> > BITS downloads the file, creating the hidden temporary file, but doesn't
> > complete the download by renaming the file. When you look at the job
> > status
> > in BITSADMIN, it shows a successful file transfer. I've seen nothing on
> > the
> > problem looking around the Internet. The only BITS references I've seen
> > have
> > to do with Vista BITS becoming corrupt. However, that isn't the problem
> > and
> > if you run the published fix for it, the fix states that it isn't needed.
> > Just wondering if anyone has heard of a fix for this specific issue.
>