amazon-s3

CORS. Presigned URL. S3

I've generated a presigned S3 POST URL. Using the return parameters, I then pass it into my code, but I keep getting this error Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource..

Whereas on Postman, I'm able to submit the form-data with one attached file.

On PostMan, I manually entered the parameters enter image description here

The same parameters are then entered into my code. enter image description here

Solution

  • You must edit the CORS Configuration to be public , something like:

       <?xml version="1.0" encoding="UTF-8"?>
<CORSConfiguration xmlns="http://s3.amazonaws.com/doc/2006-03-01/">
<CORSRule>
    <AllowedOrigin>*</AllowedOrigin>
    <AllowedMethod>POST</AllowedMethod>
    <MaxAgeSeconds>3000</MaxAgeSeconds>
    <AllowedHeader>*</AllowedHeader>
</CORSRule>
</CORSConfiguration>

    enter image description here