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Internet Message Access Protocol (IMAP) - UIDPLUS extension (RFC4315)

IP.com Disclosure Number: IPCOM000132517D
Original Publication Date: 2005-Dec-01
Included in the Prior Art Database: 2005-Dec-20
Document File: 9 page(s) / 17K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

M. Crispin: AUTHOR

Abstract

The UIDPLUS extension of the Internet Message Access Protocol (IMAP) provides a set of features intended to reduce the amount of time and resources used by some client operations. The features in UIDPLUS are primarily intended for disconnected-use clients.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 16% of the total text.

Network Working Group                                         M. Crispin
Request for Comments: 4315                                 December 2005
Obsoletes: 2359
Category: Standards Track


      Internet Message Access Protocol (IMAP) - UIDPLUS extension

Status of This Memo

   This document specifies an Internet standards track protocol for the
   Internet community, and requests discussion and suggestions for
   improvements.  Please refer to the current edition of the "Internet
   Official Protocol Standards" (STD 1) for the standardization state
   and status of this protocol.  Distribution of this memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2005).

Abstract

   The UIDPLUS extension of the Internet Message Access Protocol (IMAP)
   provides a set of features intended to reduce the amount of time and
   resources used by some client operations.  The features in UIDPLUS
   are primarily intended for disconnected-use clients.

1.  Introduction and Overview

   The UIDPLUS extension is present in any IMAP server implementation
   that returns "UIDPLUS" as one of the supported capabilities to the
   CAPABILITY command.

   The UIDPLUS extension defines an additional command.  In addition,
   this document recommends new status response codes in IMAP that
   SHOULD be returned by all server implementations, regardless of
   whether or not the UIDPLUS extension is implemented.

   The added facilities of the features in UIDPLUS are optimizations;
   clients can provide equivalent functionality, albeit less
   efficiently, by using facilities in the base protocol.

1.1.  Conventions Used in This Document

   In examples, "C:" and "S:" indicate lines sent by the client and
   server, respectively.

Crispin                     Standards Track                     [Page 1]
RFC 4315                IMAP - UIDPLUS Extension           December 2005


   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "MAY", and "OPTIONAL" in this document are to
   be interpreted as described in [KEYWORDS].

   A "UID set" is similar to the [IMAP] sequence set; however, the "*"
   value for a sequence number is not permitted.

2.  Additional Commands

   The following command definition is an extension to [IMAP] section
   6.4.

2.1.  UID EXPUNGE Command

   Arguments:  sequence set

   Data:       untagged responses: EXPUNGE

   Result:     OK - expunge completed
               NO - expunge failure (e.g., permission denied)
               BAD - command unknown or arguments invalid

      The UID EXPUNGE command permanently removes all messages that both
      have the \Deleted flag set and have a UID that is included in the
      specified sequence s...