Use curl to upload a file in a multipart/form-data request, with custom content-type for the file (not the request)

upload.sh

filename='yourfilename'
filetype='text/csv'
token='my oauth token'
url='http://localhost/upload'

curl "$url" \
  --form "data=@$filename;type=$filetype" \
  --form "name=somename" \
  -H "Authorization: Bearer $token"
  

Thank you so much for this! Scoured the entire internet until I found a simple explanation as to why all my requests were denied.

You sir, are a gentleman and a scholar, thanks!

thanks, that saved me quite the headache!

Ah! This was a missing piece for firmware upload for old d-link cameras -

--form DownloadFile=@"$fwpath"';type=application/octet-stream'

(along with a bunch of other fields) the ;type= actually made a difference. Thanks.