"Ravi" <ravi.use***@gmail.com> ???????/???????? ? ???????? ?????????:
news:091fb38d-9b0c-4550-ab83-e4b09317123a@b15g2000hsa.googlegroups.com...
> I'm using HttpWebRequest in .NET 1.1 to post data files to a web
> server. The data files can potentially be 20mb or more. The relevant
> code for this looks essentially like:
>
> Stream reqStream = request.GetRequestStream();
> reqStream.Write(data, 0, data.Length);
> reqStream.Close();
> WebResponse response = request.GetResponse();
>
> My problem is that GetResponse() times out while the file is being
> uploaded. My call to Write() is returning immediately rather than
> blocking until the data gets sent to the remote server. I know I can
> increase the timeout interval but that just pushes out the upper size
> limit for data without fixing the real issue.
>
> I've found that if I upload in pieces instead of writing the data all
> at once then every call to Write after the first one seems to block
> while data from the previous write gets uploaded. That potentially
> solves my problem since only the last, small piece will be left when I
> call GetResponse.
>
> I can't find any documentation confirming this behavior, though. Is
> there any guarantee that if I upload in pieces then my program can
> more or less monitor the actual transfer progress. If not, does anyone
> have other ideas how I can avoid calling GetResponse() until the
> upload is finished?
>
> Thanks,
> Ravi.