IPP Mail Archive: RE: IPP> Document-format attribute.. [ipp-

IPP Mail Archive: RE: IPP> Document-format attribute.. [ipp-

RE: IPP> Document-format attribute.. [ipp-mod] clarification

From: Manros, Carl-Uno B (cmanros@cp10.es.xerox.com)
Date: Tue Mar 28 2000 - 17:24:30 EST

  • Next message: Hastings, Tom N: "IPP> RESEND: OPS - ISSUE: Should Get-Printer-Supported-Values require operator/admin privileges?"

    Tom,

    It seems that thlis clarification should go into the model docoment before
    RFC publication.

    Carl-Uno

    -----Original Message-----
    From: Hastings, Tom N [mailto:hastings@cp10.es.xerox.com]
    Sent: Tuesday, March 28, 2000 8:27 AM
    To: anthony.porter@computer.org; 'Venkatesh'; ipp@pwg.org
    Subject: RE: IPP> Document-format attribute.. [ipp-mod] clarification

    I searched both the Model and the Implementer's Guide and there isn't
    anything that explains what "auto-sensing" is.

    So, ok to add the following clarification to the [ipp-mod] document in
    section 4.1.9.1:

     using an implementation-dependent method that examines some number of
    octets of the document data

    so that it reads:

    4.1.9.1 Application/octet-stream -- Auto-Sensing the document format

    One special type is 'application/octet-stream'. If the Printer object
    supports this value, the Printer object MUST be capable of auto-sensing the
    format of the document data using an implementation-dependent method that
    examines some number of octets of the document data, either as part of the
    create operation and/or at document processing time.

    Or should we put something similar in the Implementer's Guide, instead?

    Tom

    -----Original Message-----
    From: Anthony Porter [mailto:anthony.porter@computer.org]
    Sent: Monday, September 06, 1999 03:08
    To: 'Venkatesh'; ipp@pwg.org
    Subject: RE: IPP> Document-format attribute..

    It can usually tell from the first few bytes of the file. For example,
    PostScript files start with %!PS and PDF files start with %PDF. Gif files
    start with GIF89 and so on.

    -----Original Message-----
    From: owner-ipp@pwg.org [mailto:owner-ipp@pwg.org]On Behalf Of Venkatesh
    Sent: 06 September 1999 08:54
    To: ipp@pwg.org
    Subject: IPP> Document-format attribute..

    Hello Everybody..
     I have a doubt in the "document-format" attribute that the client
    optionally specifies in the request..(according to IPP/1.1 draft)
    The draft says that if theclient supplies this attribute and its value
    is
    'application/octet-stream' then the server needs to aut-sense the
    document..
    Can anyone explain me how does this autosensing happens.......
    How actually will the Printer Object perform this task...

    Thank You



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