rfc3656.txt

广泛使用的邮件服务器！同时

   rsp-ok = "OK" SP string

   rsp-reserve = "RESERVE" SP string SP string

   rsp-delete = "DELETE" SP string

   sasl-mech = 1*ATOM-CHAR
      ; ATOM-CHAR is defined in [ACAP]

   string = quoted / literal
      ; quoted and literal are defined in [ACAP]





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   tag = 1*ATOM-CHAR
      ; ATOM-CHAR is defined in [ACAP]

6.  MUPDATE URL Scheme

   This document defines the a URL scheme for the purposes of
   referencing MUPDATE resources, according to the requirements in
   [RFC2717].  This includes both MUPDATE servers as a whole, along with
   individual mailbox entries on a given MUPDATE server.

   There is no MIME type associated with these resources.  It is
   intended that a URL consumer would either retrieve the MUPDATE record
   in question, or simply connect to the MUPDATE server running on the
   specified host.  Note that the consumer will need to have
   authentication credentials for the specified host.

   The MUPDATE URL scheme is similar to the IMAP URL scheme [IMAP-URL].
   However, it only takes one of two possible forms:

      mupdate://<iserver>/
      mupdate://<iserver>/<mailbox>

   The first form refers to a MUPDATE server as a whole, the second form
   indicates both the server and a mailbox to run a FIND against once
   authenticated to the server.  Note that part of <iserver> may include
   username and authentication information along with a hostname and
   port.

6.1.  MUPDATE URL Scheme Registration Form

   URL scheme name: "mupdate"

   URL scheme syntax:

      This defines the MUPDATE URL Scheme in [ABNF].  Terminals from the
      BNF of IMAP URLs [IMAP-URL] are also used.

         mupdateurl = "mupdate://" iserver "/" [ enc_mailbox ]
            ; iserver and enc_mailbox are as defined in [IMAP-URL]

   Character encoding considerations:

      Identical to those described in [IMAP-URL] for the appropriate
      terminals.







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   Intended Usage:

      The form of the URL without an associated mailbox is intended to
      designate a MUPDATE server only.  If a mailbox name is included in
      the URL, then the consumer is expected to execute a FIND command
      for that mailbox on the specified server.

   Applications and/or protocols which use this URL scheme name:

      The protocol described in this document.

   Interoperability Considerations:

      None.

   Security Considerations:

      Users of the MUPDATE URL Scheme should review the security
      considerations that are discussed in [IMAP-URL].  In particular,
      the consequences of including authentication mechanism information
      in a URL should be reviewed.

   Relevant Publications:

      This document and [IMAP-URL].

   Author, Change Controller, and Contact for Further Information:

      Author of this document.

7.  Security Considerations

   While no unauthenticated users may make modifications or even perform
   searches on the database, it is important to note that this
   specification assumes no protections of any type for authenticated
   users.

   All authenticated users have complete access to the database.  For
   this reason it is important to ensure that accounts that are making
   use of the database are well secured.

   A more secure deployment might have all read only access go through a
   slave, and only have accounts which need write access use the master.
   This has the disadvantage of a marginally longer time for updates to
   reach the clients.






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   The protocol assumes that all authenticated users are cooperating to
   maintain atomic operations.  Therefore, all new mailboxes SHOULD be
   RESERVEd before they are ACTIVATEd, despite the fact that the
   protocol does not require this, and it is therefore possible for a
   set of participants which do not obey the provided locking to create
   an inconsistent database.  RESERVEing the mailbox first is not
   required to perform an activate because this behavior simplifies
   synchronization with the actual location of the mailboxes.

8.  IANA Considerations

   The IANA has assigned TCP port number 3905 to "mupdate".

   The IANA has registered a URL scheme for the MUPDATE protocol, as
   defined in section 6.1 of this document.

   IANA has registered a GSSAPI service name of "mupdate" for the
   MUPDATE protocol in the registry maintained at:

   http://www.iana.org/assignments/gssapi-service-names

9.  Intellectual Property Rights

   The IETF takes no position regarding the validity or scope of any
   intellectual property or other rights that might be claimed to
   pertain to the implementation or use of the technology described in
   this document or the extent to which any license under such rights
   might or might not be available; neither does it represent that it
   has made any effort to identify any such rights.  Information on the
   IETF's procedures with respect to rights in standards-track and
   standards-related documentation can be found in BCP-11.  Copies of
   claims of rights made available for publication and any assurances of
   licenses to be made available, or the result of an attempt made to
   obtain a general license or permission for the use of such
   proprietary rights by implementors or users of this specification can
   be obtained from the IETF Secretariat.

   The IETF invites any interested party to bring to its attention any
   copyrights, patents or patent applications, or other proprietary
   rights which may cover technology that may be required to practice
   this standard.  Please address the information to the IETF Executive
   Director.









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10.  References

10.1.  Normative References

   [KEYWORDS]  Bradner, S., "Key words for use in RFCs to Indicate
               Requirement Levels", BCP 14, RFC 2119, March 1997.

   [IMAP]      Crispin, M., "Internet Message Access Protocol - Version
               4", RFC 3501, March 2003.

   [ABNF]      Crocker, D., Ed. and P. Overell, "Augmented BNF for
               Syntax Specifications: ABNF", RFC 2234, November 1997.

   [MIME]      Freed, N. and N. Bornstein, "Multipurpose Internet Mail
               Extensions (MIME) Part One: Format of Internet Message
               Bodies", RFC 2045, November 1996.

   [IMAP-ACL]  Myers, J., "IMAP4 ACL extension", RFC 2086, January 1997.

   [SASL]      Myers, J., "Simple Authentication and Security Layer
               (SASL)", RFC 2222, October 1997.

   [IMAP-URL]  Newman, C., "IMAP URL Scheme", RFC 2192, September 1997.

   [ACAP]      Newman, C. and J. Myers, "ACAP -- Application
               Configuration Access Protocol", RFC 2244, November 1997.

   [TLS]       Dierks, T. and C. Allen, "The TLS Protocol Version 1.0",
               RFC 2246, January 1999.

10.2.  Informative References

   [POP3]      Myers, J. and M. Rose, "Post Office Protocol - Version
               3", STD 53, RFC 1939, May 1996.

   [RFC2717]   Petke, R. and I. King, "Registration Procedures for URL
               Scheme Names", BCP 35, RFC 2717, November 1999.














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11.  Acknowledgments

   Lawrence Greenfield and Ken Murchison, for a great deal of input on
   both the protocol and the text of the documents.

12.  Author's  Address

   Robert Siemborski
   Carnegie Mellon, Andrew Systems Group
   Cyert Hall 207
   5000 Forbes Avenue
   Pittsburgh, PA  15213

   Phone: [phone]
   EMail: [e-mail]




































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13.  Full Copyright Statement

   Copyright (C) The Internet Society (2003).  All Rights Reserved.

   This document and translations of it may be copied and furnished to
   others, and derivative works that comment on or otherwise explain it
   or assist in its implementation may be prepared, copied, published
   and distributed, in whole or in part, without restriction of any
   kind, provided that the above copyright notice and this paragraph are
   included on all such copies and derivative works.  However, this
   document itself may not be modified in any way, such as by removing
   the copyright notice or references to the Internet Society or other
   Internet organizations, except as needed for the purpose of
   developing Internet standards in which case the procedures for
   copyrights defined in the Internet Standards process must be
   followed, or as required to translate it into languages other than
   English.

   The limited permissions granted above are perpetual and will not be
   revoked by the Internet Society or its successors or assignees.

   This document and the information contained herein is provided on an
   "AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING
   TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING
   BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION
   HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF
   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

Acknowledgement

   Funding for the RFC Editor function is currently provided by the
   Internet Society.



















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