Why does file uploaded to S3 have content type application/octet-stream unless i name the file .html

Question

Even though I set content type to text/html it ends up as application/octet-stream on S3.

ByteArrayInputStream contentsAsStream = new ByteArrayInputStream(c         


        

Answer 1

Do you have any Override on the default mime content on your S3 account? Look at this link to see how to check it: How to override default Content Types.

Anyway, it looks like your S3 client fails to determine the correct mime-type by the content of the file, so it relies on the extension. octet-stream is the widely used default content mime type when a browser/servlet can't determine the mimetype: Is there any default mime type?