Can preprocessors handle binary uploads?

[gcleaves]

Hi. The preprocessor functionality is really interesting. But can it handle an HTTP binary upload? I get an 415
Unsupported Media Type when trying a binary upload with Postman.

curl --location 'http://domain.com/api/r/test?a=1&b=2' --header 'Content-Type: application/pdf' --data '@/temp/tm1.a.pdf'

I have a flow which processes a file and returns some data about the file. At the moment the flow takes base64 input. But I'd like to see if I can decrease the upload size by allowing a binary upload instead of having to use base64 text. The goal is also to improve the endpoint consumer's experience so they can use a tool like Postman or Curl without first needing to convert the file to base64.

Maybe the acceptable content-type could be set in the Custom HTTP route and it passes the raw body to the preprocessor.

[gcleaves]

Created issue feature request #4471