The media upload endpoint does not like `application/octet-stream`

[jakeonfire]

the code has a fallback for application/octet-stream here:

x-ruby/lib/x/media_uploader.rb

Line 60 in 657efe8

else MIME_TYPE_MAP[File.extname(file_path).delete(".").downcase] || DEFAULT_MIME_TYPE

but the API requires one of these:

the error returned from the API is Invalid Request: One or more parameters to your request was invalid.

fwiw this was an issue for us since we were trying to upload Tempfiles with no extension. it was unclear what the issue was. it might be clearer to raise an error instead of using this DEFAULT_MIME_TYPE fallback. application/octet-stream used to work before the switch to the newest v2 media upload endpoints.

[jakeonfire]

and, separately, it would be nice if #infer_media_type were a public method 🙂