Very confusing (and wrong) file upload option

[sciabarracom]

In credential.js in the ocr example the options for generating a file upload for put are:

const options = {
    headers: {
      'Content-Type': 'multipart/formdata; charset=UTF-8', // wrong!
      'Access-Control-Allow-Origin': '*',
      'Cross-Domain': true
    }
  };

Actually when you do a PUT you DO NOT HAVE to use multipart form/data, just upload the file as is.
As a result, you have to do ad upload generating a put request that will upload the file as a binary string also specifying Contet-Type "multipart/formdata".... that is not.

I went crazy following the example because I tried to upload with put and multiplart/form-data that is NOT decoded by the put.

I was finally able to perform the upload removing the Content-Type when generating the file upload and then doing a plain put of the file to upload.

[rabbah]

If that works for OCR too, we can simplify the code.

[sciabarracom]

It should the problem is file upload is deep buried inside a react-file-uploader that is also deprecated