RFC2088 IMAP4 non-synchronizing literals

2088 IMAP4 non-synchronizing literals. J. Myers. January 1997. (Format: TXT=4052 bytes) (Updated by RFC4466) (Status: PROPOSED STANDARD)

日本語訳
RFC一覧

参照

Network Working Group                                           J. Myers
Request for Comments: 2088                               Carnegie Mellon
Cateogry: Standards Track                                   January 1997


                    IMAP4 non-synchronizing literals

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.

1.   Abstract

   The Internet Message Access Protocol [IMAP4] contains the "literal"
   syntactic construct for communicating strings.  When sending a
   literal from client to server, IMAP4 requires the client to wait for
   the server to send a command continuation request between sending the
   octet count and the string data.  This document specifies an
   alternate form of literal which does not require this network round
   trip.

2.   Conventions Used in this Document

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

3.   Specification

   The non-synchronizing literal is added an alternate form of literal,
   and may appear in communication from client to server instead of the
   IMAP4 form of literal.  The IMAP4 form of literal, used in
   communication from client to server, is referred to as a
   synchronizing literal.

   Non-synchronizing literals may be used with any IMAP4 server
   implementation which returns "LITERAL+" as one of the supported
   capabilities to the CAPABILITY command.  If the server does not
   advertise the LITERAL+ capability, the client must use synchronizing
   literals instead.

   The non-synchronizing literal is distinguished from the original
   synchronizing literal by having a plus ('+') between the octet count
   and the closing brace ('}').  The server does not generate a command
   continuation request in response to a non-synchronizing literal, and



Myers                       Standards Track                     [Page 1]

RFC 2088                        LITERAL                     January 1997


   clients are not required to wait before sending the octets of a non-
   synchronizing literal.

   The protocol receiver of an IMAP4 server must check the end of every
   received line for an open brace ('{') followed by an octet count, a
   plus ('+'), and a close brace ('}') immediately preceeding the CRLF.
   If it finds this sequence, it is the octet count of a non-
   synchronizing literal and the server MUST treat the specified number
   of following octets and the following line as part of the same
   command.  A server MAY still process commands and reject errors on a
   line-by-line basis, as long as it checks for non-synchronizing
   literals at the end of each line.

   Example:    C: A001 LOGIN {11+}
               C: FRED FOOBAR {7+}
               C: fat man
               S: A001 OK LOGIN completed

4.   Formal Syntax

   The following syntax specification uses the augmented Backus-Naur
   Form (BNF) notation as specified in [RFC-822] as modified by [IMAP4].
   Non-terminals referenced but not defined below are as defined by
   [IMAP4].

   literal         ::= "{" number ["+"] "}" CRLF *CHAR8
                       ;; Number represents the number of CHAR8 octets

6.   References

   [IMAP4] Crispin, M., "Internet Message Access Protocol - Version 4",
   draft-crispin-imap-base-XX.txt, University of Washington, April 1996.

   [RFC-822] Crocker, D., "Standard for the Format of ARPA Internet Text
   Messages", STD 11, RFC 822.

7.   Security Considerations

   There are no known security issues with this extension.

8.   Author's Address

   John G. Myers
   Carnegie-Mellon University
   5000 Forbes Ave.
   Pittsburgh PA, 15213-3890

   Email: jgm+@cmu.edu



Myers                       Standards Track                     [Page 2]

一覧

 RFC 1〜100  RFC 1401〜1500  RFC 2801〜2900  RFC 4201〜4300 
 RFC 101〜200  RFC 1501〜1600  RFC 2901〜3000  RFC 4301〜4400 
 RFC 201〜300  RFC 1601〜1700  RFC 3001〜3100  RFC 4401〜4500 
 RFC 301〜400  RFC 1701〜1800  RFC 3101〜3200  RFC 4501〜4600 
 RFC 401〜500  RFC 1801〜1900  RFC 3201〜3300  RFC 4601〜4700 
 RFC 501〜600  RFC 1901〜2000  RFC 3301〜3400  RFC 4701〜4800 
 RFC 601〜700  RFC 2001〜2100  RFC 3401〜3500  RFC 4801〜4900 
 RFC 701〜800  RFC 2101〜2200  RFC 3501〜3600  RFC 4901〜5000 
 RFC 801〜900  RFC 2201〜2300  RFC 3601〜3700  RFC 5001〜5100 
 RFC 901〜1000  RFC 2301〜2400  RFC 3701〜3800  RFC 5101〜5200 
 RFC 1001〜1100  RFC 2401〜2500  RFC 3801〜3900  RFC 5201〜5300 
 RFC 1101〜1200  RFC 2501〜2600  RFC 3901〜4000  RFC 5301〜5400 
 RFC 1201〜1300  RFC 2601〜2700  RFC 4001〜4100  RFC 5401〜5500 
 RFC 1301〜1400  RFC 2701〜2800  RFC 4101〜4200 

スポンサーリンク

Image.nameProp

ホームページ製作・web系アプリ系の製作案件募集中です。

上に戻る