S3 File System CORS Upload
This module allows you to upload files directly to Amazon S3 using CORS, working in conjunction with the S3 File System module. It facilitates more efficient file handling by enabling direct browser-to-S3 uploads.
This module is a fork of AmazonS3 CORS Upload, re-written to work with the S3 File System module, rather than AmazonS3.
This module requires S3 File System 8.x-3.x and Token 8.x-1.x. These dependencies are installed automatically if composer is used to manage this module.
This module requires 3.x of the aws/aws-sdk-php library.
Known Issues
Use of "path style" endpoints for AWS S3 buckets is deprecated and will be removed at some point. All access should be converted to use "virtual-hosted-style" endpoints. Refer to https://aws.amazon.com/blogs/aws/amazon-s3-path-deprecation-plan-the-rest-of-the-story/ for more information.
Unfortunately, CORS uploads are not supported in Internet Explorer versions before IE 10. This means that any user who has an older version of IE will be unable to upload files through the CORS Upload widget. This limitation is due to the double-whammy of IE 9 and below's non-existent support for direct AJAX file uploads, combined with its overly restrictive file input security features.