POST /multipart-form-data-with-file HTTP/1.1
Host: localhost:1234
Connection: close
Content-Length: 273
Content-Type: multipart/form-data; boundary="ABCDE"
User-Agent: HTTP-Tiny

--ABCDE
Content-Disposition: form-data; name="file"; filename="text-file.txt"
Content-Type: application/octet-stream

Hello World! 🌍

--ABCDE
Content-Disposition: form-data; name="foo"

bar
--ABCDE
Content-Disposition: form-data; name="foo"

baz
--ABCDE--
