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Hypertext Transfer Protocol Version 2 (HTTP/2)
RFC 7540

Revision differences

Document history

Date By Action
2026-05-20
(System) Changed metadata: changed keywords to '['HTTP', 'SPDY', 'Web']' from '[]'
2026-05-20
(System) Metadata update from RFC Editor
2026-05-20
(System)
Changed author "M. Thomson": changed name from "Martin Thomson" to "M. Thomson", changed is_editor from "False" to "True", cleared country (was "United States"), changed order …
Changed author "M. Thomson": changed name from "Martin Thomson" to "M. Thomson", changed is_editor from "False" to "True", cleared country (was "United States"), changed order from "2" to "3"
2026-05-20
(System)
Changed author "R. Peon": changed name from "Roberto Peon" to "R. Peon", changed affiliation from "Google, Inc" to "Google, Inc.", changed order from "1" to …
Changed author "R. Peon": changed name from "Roberto Peon" to "R. Peon", changed affiliation from "Google, Inc" to "Google, Inc.", changed order from "1" to "2"
2026-05-20
(System) Changed author "M. Belshe": changed name from "Mike Belshe" to "M. Belshe", changed order from "0" to "1"
2026-05-20
(System) Metadata update from RFC Editor
2020-01-21
(System) Received changes through RFC Editor sync (added Verified Errata tag)
2018-12-20
(System)
Received changes through RFC Editor sync (changed abstract to 'This specification describes an optimized expression of the semantics of the Hypertext Transfer Protocol (HTTP), referred …
Received changes through RFC Editor sync (changed abstract to '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.')
2015-10-14
(System) Notify list changed from httpbis-chairs@ietf.org, draft-ietf-httpbis-http2@ietf.org to (None)
2015-05-19
(System) IANA registries were updated to include RFC7540
2015-05-14
(System) RFC published