How to allow direct file uploads from JavaScript to Amazon S3 signed by Python

Does anyone know if the same thing is possible for Azure Blob Storage? I don't believe it is now, due to the Cross Origin Resource Sharing (CORS) limitations of Azure (<a href="http://social.msdn.microsoft.com/Forums/en-US/windowsazuredata/thread/628bb3eb-f96c-479b-9040-e9ecaf45bac9/" rel="nofollow">http://social.msdn.microsoft.com/Forums/en-US/windowsazureda...</a>), but I'd like to double check.

But does this mean Javascript is talking to your server rather than S3?<p>Because the beauty of filepicker is that a user is not locking up one of your processes while they spend minutes uploading a file.<p>Especially important on Heroku, for example. Though I'm sure a self hosted node server could fare better, I'd sooner stick it out with Filepicker.

Too true about your problems with Filepicker. It put me off using them for even small scale projects.

So any more details about the issues at Filepicker?<p>Can't see any stories on HN<p>An outage is expected on services, even self-made ones like this.

How is it 'direct' if there is an intermediary?

Very cool. This will be really useful.