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RFC 7540 - HTTP/2

Document Information​

  • RFC Number: 7540
  • Title: Hypertext Transfer Protocol Version 2 (HTTP/2)
  • Published: May 2015
  • Authors: M. Belshe (BitGo), R. Peon (Google, Inc), M. Thomson, Ed. (Mozilla)
  • Obsoletes: None (coexists with HTTP/1.1)
  • Updated By: RFC 9113 (HTTP/2, 2022 update)
  • Status: Standards Track

Abstract​

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.

Table of Contents​

Appendix​