Hmm.  Seems like the point of mine and others emails was simplification.
Somehow its come round now to a discussion of forcing implementors to do
something more complicated...     ;)

FM


On Mon, 2007-04-30 at 12:25 -0400, Paul Kyzivat wrote:
> 
> [EMAIL PROTECTED] wrote:
> >    From: Cullen Jennings <[EMAIL PROTECTED]>
> > 
> >    I think the WG should consider an update to 3261 (likely done through  
> >    the process Keith has proposed) that makes this multipart/MIME  
> >    mandatory to implement.
> > 
> > I assume that the requirement is that if a message has a
> > multipart/alternative body, and the UA is capable of understanding one
> > part of the body, then it must be able to extract that part and use it
> > to process the message.
> 
> While there is a place for multipart/alternative, I think the key 
> requirement is that if there is a multipart/mixed then the UA should 
> look within it for one or more parts that it would know how to handle if 
> they were the only part in the body.
> 
> While doing this it also needs to process the handling= parameter on the 
> Content-Disposition header. It can ignore parts with handling=optional, 
> but must punt if handling=required on some part and it doesn't know how 
> to handle it.
> 
> Writing down precisely what handling multipart means in sip would make a 
> nice little draft. I expect there would be at least a bit of controversy 
> about it.
> 
>       Paul
> 
> 
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