Pecl upload progress bar not really working with S3 uploads

Ugh, sorry for the late reply... some other projects have come up, and I got derailed from this. Anyway, yes, I will test this at some point and report back. In the meantime, if anyone else knows the answer...

I know it's been a long time... I've been been on and off other project, but am now back working with a large media site that wants to store files on S3.

I've got this module up and running, and everything seems to "work," but there's one major issue: the PECL upload progress bar does not seem to be working usefully when uploading to S3 destinations. The bar is there, mind you, but when uploading large files it jumps from 0% to 66% soon after starting the upload, and then stays at 66% for the duration of the upload, until abruptly jumping to 100% at the end. Needless to say this gives the impression that the upload is stuck and not working.

This seems like a significant concern, since it makes this module nearly useless for any media-driven site that needs to allow users to upload content and get useful feedback on upload progress...

So... is there any way to get upload progress for files being uploaded to S3? I'm certainly not an expert on any of this, but it seems like it should be possible given this description of streaming uploads to S3:

The nice thing about streams is that they have a callback called whenever the next chunk is read for to further PUT (in the https sense) data to S3. You can use this callback to compute and display the progress on the client UI.

Any help on this is very much appreciated! And thanks for the great module!

This module first uploads to your server, then copies the file over to S3.

Really? I was under the impression that this module uploads directly to S3... (see http://drupal.org/node/1319798). I certainly never see the file on my server.

Anyway, the pecl progress bar works fine for uploads to my public files directory (jumps around a little, but will usually advance every couple of seconds or so).

To S3 I continue to get bad results:

• Smallish files (~6MB): the progress sit at 0% until jumping abruptly to 100% on completion (which takes a copule of minutes on my slow connection).
• Larger files (~30 MB): the progress jumps to some arbitrary number immediately (23% or 66%), then stays there until jumping abruptly to 100% on completion (which takes several minutes on my slow connection).

Meanwhile Chrome's status message simply reads "Waiting for [my server name]," and gives the spinning cursor. Seeing this for several minutes, with no apparent progress on the upload, obviously gives the impression that the upload has broken.

This is with a fresh install of latest D7, and no other modules installed.

Any further word on the progress bar issue? Are others seeing the same behavior? Any way to get this to work?