Internet Engineering Task Force (IETF)M. Belshe
Request for Comments: 7540BitGo
Category: Standards TrackR. Peon
ISSN: 2070-1721Google, Inc
M. Thomson, Editor
May 2015

Hypertext Transfer Protocol Version 2 (HTTP/2)


This specification describes an optimized expression of the semantics of the Hypertext Transfer Protocol (HTTP), referred to as HTTP version 2 (HTTP/2). HTTP/2 enables a more efficient use of network resources and a reduced perception of latency by introducing header field compression and allowing multiple concurrent exchanges on the same connection. It also introduces unsolicited push of representations from servers to clients.

This specification is an alternative to, but does not obsolete, the HTTP/1.1 message syntax. HTTP's existing semantics remain unchanged.