Successive file upload test

Alright... I'm pretty certain this is simulating the issue that I'm running into. When uploading multiple files using different requests, at least one of them seems to fail. Something similar seems to happen if I try to examine the stream rather than actually upload the file.

If my particular situation, I'm attempting to grab the height and width of an image before sending them up to s3, and all this happens when the user drags a group files over the browser and drops them.