Cookies: HTTP State Management Mechanism
draft-ietf-httpbis-rfc6265bis-03
HTTP Working Group A. Barth
Internet-Draft M. West
Obsoletes: 6265 (if approved) Google, Inc
Intended status: Standards Track April 27, 2019
Expires: October 29, 2019
Cookies: HTTP State Management Mechanism
draft-ietf-httpbis-rfc6265bis-03
Abstract
This document defines the HTTP Cookie and Set-Cookie header fields.
These header fields can be used by HTTP servers to store state
(called cookies) at HTTP user agents, letting the servers maintain a
stateful session over the mostly stateless HTTP protocol. Although
cookies have many historical infelicities that degrade their security
and privacy, the Cookie and Set-Cookie header fields are widely used
on the Internet. This document obsoletes RFC 6265.
Note to Readers
Discussion of this draft takes place on the HTTP working group
mailing list (ietf-http-wg@w3.org), which is archived at
https://lists.w3.org/Archives/Public/ietf-http-wg/ [1].
Working Group information can be found at http://httpwg.github.io/
[2]; source code and issues list for this draft can be found at
https://github.com/httpwg/http-extensions/labels/6265bis [3].
Status of This Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet-
Drafts is at https://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress."
This Internet-Draft will expire on October 29, 2019.
Barth & West Expires October 29, 2019 [Page 1]
Internet-Draft Cookies: HTTP State Management Mechanism April 2019
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 4
2. Conventions . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.1. Conformance Criteria . . . . . . . . . . . . . . . . . . 5
2.2. Syntax Notation . . . . . . . . . . . . . . . . . . . . . 5
2.3. Terminology . . . . . . . . . . . . . . . . . . . . . . . 6
3. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.1. Examples . . . . . . . . . . . . . . . . . . . . . . . . 7
4. Server Requirements . . . . . . . . . . . . . . . . . . . . . 9
4.1. Set-Cookie . . . . . . . . . . . . . . . . . . . . . . . 9
4.1.1. Syntax . . . . . . . . . . . . . . . . . . . . . . . 9
4.1.2. Semantics (Non-Normative) . . . . . . . . . . . . . . 11
4.1.3. Cookie Name Prefixes . . . . . . . . . . . . . . . . 14
4.2. Cookie . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.2.1. Syntax . . . . . . . . . . . . . . . . . . . . . . . 15
4.2.2. Semantics . . . . . . . . . . . . . . . . . . . . . . 16
5. User Agent Requirements . . . . . . . . . . . . . . . . . . . 16
5.1. Subcomponent Algorithms . . . . . . . . . . . . . . . . . 16
5.1.1. Dates . . . . . . . . . . . . . . . . . . . . . . . . 17
5.1.2. Canonicalized Host Names . . . . . . . . . . . . . . 18
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