http://www.rfc-editor.org/rfc/rfc7233.txt
RFC 7233: Hypertext Transfer Protocol (HTTP/1.1): Range Requests, R. Fielding, Y. Lafon, J. Reschke2014-06-01T23:00:00-00:00The Hypertext Transfer Protocol (HTTP) is a stateless application- level protocol for distributed, collaborative, hypertext information systems. This document defines range requests and the rules for constructing and combining responses to those requests.