RFC 2616 Hypertext Transfer Protocol -- HTTP/1.1

DRAFT STANDARD · June 1999 · R. Fielding, J. Gettys, J. Mogul, H. Frystyk, L. Masinter, P. Leach, T. Berners-Lee

Superseded. What governs this material today:

updated by RFC 2817 — rfc2817
updated by RFC 5785 — rfc5785
updated by RFC 6266 — rfc6266
updated by RFC 6585 — rfc6585
obsoleted by RFC 7230 — Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing
updated by RFC 8615 — rfc8615
obsoleted by RFC 9110 — HTTP Semantics
obsoleted by RFC 9112 — HTTP/1.1
updated by RFC 9931 — rfc9931
obsoleted by RFC 7231 — Hypertext Transfer Protocol (HTTP/1.1): Semantics and Content
obsoleted by RFC 9110 — HTTP Semantics
obsoleted by RFC 7232 — Hypertext Transfer Protocol (HTTP/1.1): Conditional Requests
obsoleted by RFC 9110 — HTTP Semantics
obsoleted by RFC 7233 — Hypertext Transfer Protocol (HTTP/1.1): Range Requests
obsoleted by RFC 9110 — HTTP Semantics
obsoleted by RFC 7234 — Hypertext Transfer Protocol (HTTP/1.1): Caching
obsoleted by RFC 9111 — HTTP Caching
obsoleted by RFC 7235 — Hypertext Transfer Protocol (HTTP/1.1): Authentication
obsoleted by RFC 9110 — HTTP Semantics

HTTP has been in use by the World-Wide Web global information initiative since 1990. This specification defines the protocol referred to as "HTTP/1.1", and is an update to RFC 2068. [STANDARDS-TRACK]

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