--AaB:03x
Content-Disposition: form-data; name="submit-name"

Larry
--AaB:03x
Content-Disposition: form-data; name="submit-name-with-content"
Content-Type: text/plain

Berry
--AaB:03x
Content-Disposition: form-data; name="files"; filename="file1.txt"
Content-Type: text/plain

contents
--AaB:03x--
