Re: MESSAGE for rendering

On Dec 18, 2007, at 1:05 PM, Salvatore Loreto wrote:

> Hi Paul,
>
> just to add another example to this discussion (same as
the vcard  
> example):
> an application/im-iscomposing+xml content-type can be
put in the  
> body of a SIP MESSAGE and it is not (or it is not
supposed to be)  
> rendered
> as is to the recipient; an application that understood
it would  
> render it in whatever way it indicates that a user is
in the  
> process of composing a message.
>

Okay, I'm now completely convinced that most uses of MESSAGE
are  
really candidates for the new INFO events.

--
Dean 


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I think application/im-iscomposing+xml IS rendered; and its
rendering 
causes the UI to show that the user is typing.

As a litmus test for this stuff, a question is whether it
can reasonably 
be converted to a text/plain content and sent in a MESSAGE,
and if it is 
rendered, is the resulting behavior reasonable. For the
iscomposing 
indicators, I think you could. You could instead send a text
IM like 
"Joe is typing a reply..." and render that, and
this would achieve the 
same objective.

Also, I would not want to send iscomposing over the SIP
dialog - I think 
it should be on the media path. There will be a LOT of them,
and there 
is a requirement for timeliness. See my other note on the
criteria for 
sending something in dialog vs. along the media path.

-Jonathan R.

Dean Willis wrote:
> 
> On Dec 18, 2007, at 1:05 PM, Salvatore Loreto wrote:
> 
>> Hi Paul,
>>
>> just to add another example to this discussion
(same as the vcard 
>> example):
>> an application/im-iscomposing+xml content-type can
be put in the body 
>> of a SIP MESSAGE and it is not (or it is not
supposed to be) rendered
>> as is to the recipient; an application that
understood it would render 
>> it in whatever way it indicates that a user is in
the process of 
>> composing a message.
>>
> 
> Okay, I'm now completely convinced that most uses of
MESSAGE are really 
> candidates for the new INFO events.
> 
> -- 
> Dean
> 
> _______________________________________________
> Sip mailing list  https://ww
w1.ietf.org/mailman/listinfo/sip
> This list is for NEW development of the core SIP
Protocol
> Use sip-implementorscs.columbia.edu for
questions on current sip
> Use sippingietf.org for new developments on the
application of sip
> 

-- 
Jonathan D. Rosenberg, Ph.D.                   499 Thornall
St.
Cisco Fellow                                   Edison, NJ
08837
Cisco, Voice Technology Group
jdrosencisco.com
http://www.jdrosen.net 
                       PHONE: (408) 902-3084
http://www.cisco.com


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This list is for NEW development of the core SIP Protocol
Use sip-implementorscs.columbia.edu for questions on current
sip
Use sippingietf.org for new developments on the application of
sip