IMAP Extensions for Conditional STORE Operation or Quick Flag Changes Resynchronization (CONDSTORE) and Quick Mailbox Resynchronization (QRESYNC)
draft-ietf-qresync-rfc5162bis-09

The information below is for an old version of the document
Document Type Active Internet-Draft (qresync WG)
Last updated 2014-01-27 (latest revision 2014-01-13)
Replaces draft-ietf-qresync-rfc4551bis, draft-melnikov-5162bis
Stream IETF
Intended RFC status Proposed Standard
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Stream WG state Submitted to IESG for Publication
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Document shepherd Eliot Lear
Shepherd write-up Show (last changed 2014-01-09)
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Telechat date
Responsible AD Barry Leiba
Send notices to qresync-chairs@tools.ietf.org, draft-ietf-qresync-rfc5162bis@tools.ietf.org, imapext@Ietf.org
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Network Working Group                                        A. Melnikov
Internet-Draft                                                 Isode Ltd
Obsoletes: 4551, 5162 (if approved)                          D. Cridland
Updates: 2683 (if approved)                                   Arcode Inc
Intended status: Standards Track                        January 13, 2014
Expires: July 17, 2014

 IMAP Extensions for Conditional STORE Operation or Quick Flag Changes
   Resynchronization (CONDSTORE) and Quick Mailbox Resynchronization
                               (QRESYNC)
                  draft-ietf-qresync-rfc5162bis-09.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.

   Initially defined in RFC 4551, The Conditional Store facility
   provides a protected update mechanism for message state information
   and a mechanism for requesting only changes to message state.  This
   memo updates that mechanism and obsoletes RFC 4551, based on
   operational experience.

   This document additionally updates 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.  Hence this memo
   obsoletes RFC 5162.

   Finally, this document also updates the line length recommendation in
   Section 3.2.1.5 of 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/.

Melnikov & Cridland       Expires July 17, 2014                 [Page 1]
Internet-Draft          IMAP CONDSTORE & QRESYNC            January 2014

   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 July 17, 2014.

Copyright Notice

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   document authors.  All rights reserved.

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   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
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