HTTP/1.1, part 1: URIs, Connections, and Message Parsing

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Document Type Active Internet-Draft (httpbis WG)
Last updated 2011-11-14 (latest revision 2011-10-31)
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HTTPbis Working Group                                   R. Fielding, Ed.
Internet-Draft                                                     Adobe
Obsoletes: 2145,2616 (if approved)                             J. Gettys
Updates: 2817 (if approved)                               Alcatel-Lucent
Intended status: Standards Track                                J. Mogul
Expires: July 7, 2012                                                 HP
                                                              H. Frystyk
                                                             L. Masinter
                                                                P. Leach
                                                          T. Berners-Lee
                                                           Y. Lafon, Ed.
                                                         J. Reschke, Ed.
                                                         January 4, 2012

        HTTP/1.1, part 1: URIs, Connections, and Message Parsing


   The Hypertext Transfer Protocol (HTTP) is an application-level
   protocol for distributed, collaborative, hypertext information
   systems.  HTTP has been in use by the World Wide Web global
   information initiative since 1990.  This document is Part 1 of the
   seven-part specification that defines the protocol referred to as
   "HTTP/1.1" and, taken together, obsoletes RFC 2616 and moves it to
   historic status, along with its predecessor RFC 2068.

   Part 1 provides an overview of HTTP and its associated terminology,
   defines the "http" and "https" Uniform Resource Identifier (URI)
   schemes, defines the generic message syntax and parsing requirements
   for HTTP message frames, and describes general security concerns for

   This part also obsoletes RFCs 2145 (on HTTP version numbers) and 2817
   (on using CONNECT for TLS upgrades) and moves them to historic

Editorial Note (To be removed by RFC Editor)

   Discussion of this draft should take place on the HTTPBIS working
   group mailing list (, which is archived at

Fielding, et al.          Expires July 7, 2012                  [Page 1]
Internet-Draft              HTTP/1.1, Part 1                January 2012


   The current issues list is at
   <> and related
   documents (including fancy diffs) can be found at

   The changes in this draft are summarized in Appendix C.19.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

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   This Internet-Draft will expire on July 7, 2012.

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