RFC 7233 Hypertext Transfer Protocol (HTTP/1.1): Range Requests

PROPOSED STANDARD · June 2014 · R. Fielding, Ed., Y. Lafon, Ed., J. Reschke, Ed.

The 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.

Not ingested in full here — read it on rfc-editor.org.