I am using the Rackspace API and their FormPost which allows clients to upload files directly on the cloud. So the form's target is a link they provided (I have no control over this one). I also wish to have a progress bar for the uploaded files (which currently works). However, rackspace's link by default makes a redirection when the upload is done, which contains some parameters in the link (error code and error message). The thing is, since I am using AJAX for the progress bar, the redirection won't work, making me unable to get these parameters.
Do you have any good idea on how to do this ? I am using PHP.