POST /upload HTTP/1.1
Host: localhost:8080
Content-Type: multipart/form-data; boundary=----WebKitFormBoundarytyE4wkKlZ5CQJVTG
Content-Length: 1000

------WebKitFormBoundarytyE4wkKlZ5CQJVTG
Content-Disposition: form-data; filename="plain.txt"; name="upload"
Content-Type: text/plain

I am a plain text file

------WebKitFormBoundarytyE4wkKlZ5CQJVTG--

