Upload file to Azure Blob Storage directly from browser?

Question

Is it possible to create an html form to allow web users to upload files directly to azure blob store without using another server as a intermediary? S3 and GAW blobstore b

Answer 1

Now that Windows Azure storage services support CORS, you can do this. You can see the announcement here: Windows Azure Storage Release - Introducing CORS, JSON, Minute Metrics, and More.

I have a simple example that illustrates this scenario here: http://www.contentmaster.com/azure/windows-azure-storage-cors/

The example shows how to upload and download directly from a private blob using jQuery.ajax. This example still requires a server component to generate the shared access signature: this avoids the need to expose the storage account key in the client code.