64bit body part and message sizes in IMAP4
draft-ietf-extra-imap-64bit-03
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2018-03-05
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draft-melnikov-imap-64bit
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Network Working Group A. Melnikov
Internet-Draft Isode Ltd
Updates: 2087, 3501, 4466, 5092, 5550, SB. Jayantheesh
7888, 7889 (if approved) Samsung Electronics America
Intended status: Standards Track March 4, 2018
Expires: September 5, 2018
64bit body part and message sizes in IMAP4
draft-ietf-extra-imap-64bit-03.txt
Abstract
This document defines an IMAPv4rev1 extension that extends the
existing IMAPv4rev1 32 Bit message and body part sizes to 63 bit.
Both the base IMAP specification (RFC 3501) and several extensions
are updated.
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 September 5, 2018.
Copyright Notice
Copyright (c) 2018 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
(https://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents
carefully, as they describe your rights and restrictions with respect
to this document. Code Components extracted from this document must
include Simplified BSD License text as described in Section 4.e of
Melnikov & Jayantheesh Expires September 5, 2018 [Page 1]
Internet-Draft 64bit body part and message sizes in IMAP4 March 2018
the Trust Legal Provisions and are provided without warranty as
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
material may not have granted the IETF Trust the right to allow
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
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it for publication as an RFC or to translate it into languages other
than English.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Requirements Notation . . . . . . . . . . . . . . . . . . . . 3
3. 64bit Extension . . . . . . . . . . . . . . . . . . . . . . . 3
4. IMAP Protocol Changes . . . . . . . . . . . . . . . . . . . . 3
4.1. Changes to IMAP APPENDLIMIT extension . . . . . . . . . . 3
4.2. Changes to IMAP BINARY extension . . . . . . . . . . . . 3
4.3. Changes to IMAP URL-PARTIAL extension and IMAP URL . . . 4
4.4. Changes to IMAP QUOTA extension . . . . . . . . . . . . . 4
5. Examples . . . . . . . . . . . . . . . . . . . . . . . . . . 4
6. Formal Syntax . . . . . . . . . . . . . . . . . . . . . . . . 4
7. Security Considerations . . . . . . . . . . . . . . . . . . . 6
8. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 6
9. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 6
10. Normative References . . . . . . . . . . . . . . . . . . . . 6
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 7
1. Introduction
IMAP [RFC3501] only allows body parts or message sizes which are 32
bit. This document introduces an IMAP extension that allows for
message and body part sizes to be 63 bit. 63-bit values were chosen
instead of 64-bit values in order to make implementations on various
platforms (such as Java) easier.
The client wishing to use this extension MUST issue ENABLE 64BIT.
Refer [RFC5161] for the usage of ENABLE command.
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2. Requirements Notation
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
document are to be interpreted as described in [RFC2119].
In examples, "C:" and "S:" indicate lines sent by the client and
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