I would look for mentions of the UUID in the HTTP requests made before the progress request. Maybe it is client generated , then you can make up your own stuff, but maybe the server sends a UUID and expects it back.

If all else fails, you can use something like my module WWW::Mechanize::Chrome to get a user agent that runs Javascript, if only to dump the incoming and outgoing requests to search for the origin of the UUID.

In reply to Re: Seeking help with HTTPS form upload. by Corion
in thread Seeking help with HTTPS form upload. by FeistyLemur

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