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IMAP Extensions: Quick Flag Changes Resynchronization (CONDSTORE) and Quick Mailbox Resynchronization (QRESYNC) (RFC7162)

IP.com Disclosure Number: IPCOM000236992D
Original Publication Date: 2014-May-01
Included in the Prior Art Database: 2014-May-24

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

A. Melnikov: AUTHOR [+2]

Abstract

Often, multiple IMAP [RFC3501] clients need to coordinate changes to a common IMAP mailbox. Examples include different clients working on behalf of the same user and clients representing multiple users accessing shared mailboxes. These clients need a mechanism to synchronize state changes for messages within the mailbox. The Conditional Store ("CONDSTORE") facility allows a client to quickly resynchronize mailbox flag changes.

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Internet Engineering Task Force (IETF)                       A. Melnikov Request for Comments: 7162                                     Isode Ltd Obsoletes: 4551, 5162                                        D. Cridland Updates: 2683                                               Surevine Ltd Category: Standards Track                                       May 2014 ISSN: 2070-1721

    IMAP Extensions: Quick Flag Changes Resynchronization (CONDSTORE)              and Quick Mailbox Resynchronization (QRESYNC)

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 the 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 is an Internet Standards Track document.

   This document is a product of the Internet Engineering Task Force    (IETF).  It represents the consensus of the IETF community.  It has    received public review and has been approved for publication by the    Internet Engineering Steering Group (IESG).  Further information on    Internet Standards is available in Section 2 of RFC 5741.

   Information about the current status of this document, any errata,    and how to provide feedback on it may be obtained at    http://www.rfc-editor.org/info/rfc7162.

Melnikov & Cridland          Standards Track                    [Page 1]
 RFC 7162                IMAP CONDSTORE & QRESYNC                May 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    Provisions Relating to IETF Documents    (http://trustee.ietf.org/license-info) in effect on...