IPP Mail Archive: RE: IPP> I-D ACTION:draft-ietf-ipp-url-sch

IPP Mail Archive: RE: IPP> I-D ACTION:draft-ietf-ipp-url-sch

RE: IPP> I-D ACTION:draft-ietf-ipp-url-scheme-00.txt

From: Carl Kugler (kugler@us.ibm.com)
Date: Wed Jan 17 2001 - 13:10:36 EST

  • Next message: Herriot, Robert: "IPP> another comment on http://www.ietf.org/internet-drafts/draft -ietf-ipp-ur l-scheme-00.txt"

    What ever happened to the section about backward compatibility with
    IPP/1.0? It used to be in



    1 Compatibility with IPP/1.0
    For compatibility with IPP/1.0, clients and IPP objects (i.e. a server)
    MUST support additional schemes as described in this section:

    If a server receives an IPP/1.0 request, it MUST return an IPP/1.0
    response. That is, it MUST support an http-URL in the target "printer-uri"
    and "job-uri" operation attributes in a request. If the server returns any
    of the 3 attributes, "job-uri", "job-printer-uri" or
    "printer-uri-supported" in the response, the value of these attributes MUST
    be http-URLs. For security, a server MAY also support https-URLs.
    When a server returns the printer attribute "printer-uri-supported",
    it MUST return all supported values for an IPP/NV request. For an IPP/1.0
    request, a server MUST NOT return values that are ipp-URLs, i.e. it MUST
    return only the http-URLs and https-URLs.
    The table below shows the type of URL that a server returns for the
    "job-uri" and "job-printer-uri" job attributes for all operations based on
    how the job was created. The "or" in the table below indicates an
    implementation option.
           | Operation | Job created via |
           | attributes| |
           | for a | |
           | request | |
           | | ipphttphttps |
           | ipp | ippippNo URL returned |
           |http | httphttpNo URL returned |
           |https | https or httphttps or httphttps |

             If a server registers an ipp-URL with a name service, then it
            MUST also register an http-URL. If a printer supports a secure
            connection using SSL3, then it MUST register an https-URL.
             An IPP/NV client MUST use an ipp-URL for non-secure printers
            unless it receives a "version not supported" error message. Then it
            MUST try to send a request in version 1.0, using the http-URL in
            place of the ipp-URL for the target "job-uri" and "printer-uri"
            operation attributes in the request. For secure printers, an IPP/NV
            client must operate as an IPP/1.0 client and use an https-URL. An
            IPP/1.0 client MUST use an http-URL for non-secure printers and an
            https-URL for secure printers.

    --- In ipp@egroups.com, "Hastings, Tom N" <hastings@c...> wrote:
    I've made a .pdf file with line numbers from the .txt I-D and posted
    both of
    them at:


    As usual, send any comments to the DL. This will also be on the
    agenda for
    next week's IPP WG meeting and maybe today's telecon, if callers want


    -----Original Message-----
    From: Internet-Drafts@i... [mailto:Internet-Drafts@i...]
    Sent: Monday, January 15, 2001 03:45
    Cc: ipp@p...
    Subject: IPP> I-D ACTION:draft-ietf-ipp-url-scheme-00.txt

    A New Internet-Draft is available from the on-line Internet-Drafts
    This draft is a work item of the Internet Printing Protocol Working
    Group of
    the IETF.

         Title : Internet Printing Protocol (IPP): IPP URL
         Author(s) : R. Herriot, I. McDonald
         Filename : draft-ietf-ipp-url-scheme-00.txt
         Pages : 15
         Date : 12-Jan-01

    This document is a product of the Internet Printing Protocol Working
    Group of the Internet Engineering Task Force (IETF). Comments should
    be submitted to the ipp@p... mailing list.

    A URL for this Internet-Draft is:

    Internet-Drafts are also available by anonymous FTP. Login with the
    "anonymous" and a password of your e-mail address. After logging in,
    type "cd internet-drafts" and then
         "get draft-ietf-ipp-url-scheme-00.txt".

    A list of Internet-Drafts directories can be found in
    or ftp://ftp.ietf.org/ietf/1shadow-sites.txt

    Internet-Drafts can also be obtained by e-mail.

    Send a message to:
    In the body type:
         "FILE /internet-drafts/draft-ietf-ipp-url-scheme-00.txt".

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