IMAP Extensions for Conditional STORE Operation or Quick Flag Changes Resynchronization (CONDSTORE) and Quick Mailbox Resynchronization (QRESYNC)
draft-ietf-qresync-rfc5162bis-07

The information below is for an old version of the document
Document Type Active Internet-Draft (qresync WG)
Last updated 2014-01-07
Replaces draft-melnikov-5162bis
Stream IETF
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Stream WG state In WG Last Call
Document shepherd Eliot Lear
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Network Working Group                                        A. Melnikov
Internet-Draft                                                 Isode Ltd
Obsoletes: 4551, 5162 (if approved)                          D. Cridland
Updates: 4315, 3501, 2683 (if approved)                       Arcode Inc
Intended status: Standards Track                         January 7, 2014
Expires: July 11, 2014

 IMAP Extensions for Conditional STORE Operation or Quick Flag Changes
   Resynchronization (CONDSTORE) and Quick Mailbox Resynchronization
                               (QRESYNC)
                  draft-ietf-qresync-rfc5162bis-07.txt

Abstract

   Often, multiple IMAP (RFC 3501) clients need to coordinate changes to
   a common IMAP mailbox.  Examples include different clients working on
   behalf of the same user, and multiple users accessing shared
   mailboxes.  These clients need a mechanism to efficiently synchronize
   state changes for messages within the mailbox.

   The Conditional Store facility provides a protected update mechanism
   for message state information -- for example, the mechanism can be
   used to guarantee that only one client can change message state at
   any time -- and a mechanism for requesting only changes to message
   state.

   This document additionally defines another IMAP extension, Quick
   Resynchronization, which builds on the Conditional Store extension to
   provide an IMAP client the ability to fully resynchronize a mailbox
   as part of the SELECT/EXAMINE command, without the need for
   additional server-side state or client round-trips.

   This document obsoletes RFC 4551 and RFC 5162.  It updates RFC 4315,
   RFC 3501 and RFC 2683.

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 http://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

Melnikov & Cridland       Expires July 11, 2014                 [Page 1]
Internet-Draft          IMAP CONDSTORE & QRESYNC            January 2014

   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 July 11, 2014.

Copyright Notice

   Copyright (c) 2014 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
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   described in the Simplified BSD License.

   This document may contain material from IETF Documents or IETF
   Contributions published or made publicly available before November
   10, 2008.  The person(s) controlling the copyright in some of this
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   modifications of such material outside the IETF Standards Process.
   Without obtaining an adequate license from the person(s) controlling
   the copyright in such materials, this document may not be modified
   outside the IETF Standards Process, and derivative works of it may
   not be created outside the IETF Standards Process, except to format
   it for publication as an RFC or to translate it into languages other
   than English.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Requirements Notation . . . . . . . . . . . . . . . . . . . .   4
   3.  IMAP Protocol Changes . . . . . . . . . . . . . . . . . . . .   5
     3.1.  CONDSTORE extension . . . . . . . . . . . . . . . . . . .   5
       3.1.1.  Advertising support for CONDSTORE . . . . . . . . . .   7
       3.1.2.  New OK Untagged Responses for SELECT and EXAMINE  . .   8
       3.1.3.  STORE and UID STORE Commands  . . . . . . . . . . . .  10
       3.1.4.  FETCH and UID FETCH Commands  . . . . . . . . . . . .  16
       3.1.5.  MODSEQ Search Criterion in SEARCH . . . . . . . . . .  19
       3.1.6.  Modified SEARCH Untagged Response . . . . . . . . . .  20
       3.1.7.  HIGHESTMODSEQ Status Data Items . . . . . . . . . . .  20
       3.1.8.  CONDSTORE Parameter to SELECT and EXAMINE . . . . . .  21
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