Re: [Sip] Support for Multipart/MIME

[Dean Willis <[e-mail]>]

On May 9, 2007, at 3:22 PM, Ted Hardie wrote:

> At 2:40 PM -0500 5/9/07, James M. Polk wrote:
>> It's possible/probable/obvious (depending on who you talk to) that  
>> multipart will have to be supported for emergency calling, in  
>> which there is an SDP body and a Location message body...
>>
>> This doesn't mean UAs that *don't* establish voice/video dialogs  
>> will have to support multipart, just for those UAs that do  
>> establish voice/video dialogs with emergency response centers  
>> (again, depending on who you talk to).
>
> That won't be multipart/alternative, though, as the location body  
> and the SDP body
> won't be alternatives but independent items.   I think they would be
> multipart/mixed.  See this from RFC 2046:

Right. Mixed is a far cleaner semantic problem than alternative. It  
means "Use all of these that you understand, to the best of your  
ability, and complain if there's nothing you understand."

--
Dean



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