Re: Fwd:HTTP server driven content negotiation
From: Michael A. Dolan (miked@tbt.com)
Date: Mon, Mar 08 1999
Message-Id: <3.0.5.32.19990308075448.0086bbe0@cts.com>
Date: Mon, 08 Mar 1999 07:54:48 -0800
To: Johan Hjelm <hjelm@w3.org>, Philipp Hoschka <ph@w3.org>, www-tv@w3.org
From: "Michael A. Dolan" <miked@tbt.com>
Cc: w3t-arch@w3.org
Subject: Re: Fwd:HTTP server driven content negotiation
At 03:11 PM 3/8/99 +0100, Johan Hjelm wrote:
>Actually, this problem is exactly the same as when you have a pager or
>other device that does not have bidirectional communication with the server.
In general, I'll buy that.
>One way to do it is to set up a generic profile for the device class, which
>is activated when the device is activated (e.g. when the device is bought,
>through a telephone call to the provider - the same way as is done with
>pagers now). The WAP Forum Push group has been working on this (using
>CC/PP), but there are some other problems with push media that also need to
>be adressed (e.g. caching) that it is not clear how to solve.
Can I get a pointer to this work?
Thanks,
Mike
>At 10:53 1999-03-08 +0100, Philipp Hoschka wrote:
>>Date: Sun, 07 Mar 1999 14:53:09 -0800
>>To: www-tv@w3.org (WWW TV List)
>>From: "Michael A. Dolan" <miked@tbt.com>
>>Mime-Version: 1.0
>>Subject: HTTP server driven content negotiation
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>>
>>When making content-based system profiles, it would be handy to tag
>>broadcast content.
>>
>>As best as I can tell, CC/PP and the IETF conneg work is not suitable since
>>it requires the client to first describe its profile (which cannot
>>generally be done in TV).
>>
>>HTTP 1.1 has the Vary tag and the concept of server driven content
>>negotiation. However, I found the use of the Vary tag somewhat vague.
>>Anyone have any experience with this tag? Is there more info somewhere at
>>W3C on this - from the HTTP 1.1 author perhaps?
>>
>>Thanks for any pointers.
>>
>>Regards,
>> Mike
>>
>>- ------------------------------------------------------
>>Michael A. Dolan, Representing DIRECTV, (619)445-9070
>>PO Box 1673 Alpine, CA 91903 FAX: (619)445-6122
>>
>>
>>------- End of Forwarded Message
>
>************************************************************
> Johan HJELM
> Ericsson Research, User Applications Group
> Currently visiting engineer at the W3C
> The World Wide Web Consortium
> hjelm@w3.org
> http://www.w3.org/People/W3Cpeople.html#Hjelm
> Fax +1-617-258 5999, Phone +1-617-263-9630
> MIT/LCS, 545 Tech. Sq. Cambridge MA 02139 USA
> opinions are personal, always my own,
> and not necessarily those of Ericsson or the W3C.
>============================================================
>
>
>
------------------------------------------------------
Michael A. Dolan, Representing DIRECTV, (619)445-9070
PO Box 1673 Alpine, CA 91903 FAX: (619)445-6122