RFC 7540 Hypertext Transfer Protocol Version 2 (HTTP/2), May 2015

Cite this RFC: TXT | XML

DOI: 10.17487/RFC7540

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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.

For the definition of Status, see RFC 2026.

For the definition of Stream, see RFC 4844.

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