POST /upload HTTP/1.1
Host: localhost:8080
Content-Type: multipart/form-data; boundary=----TLV0SrKD4z1TRxRhAPUvZ
Content-Length: 221

------TLV0SrKD4z1TRxRhAPUvZ
Content-Disposition: form-data; name="file"; filename="plain.txt"
Content-Type: text/plain
Content-Transfer-Encoding: 7bit

I am a plain text file

------TLV0SrKD4z1TRxRhAPUvZ--