Re: [sipcore] Summary: number of location headers

I think we have to make provision for >1, and limiting it to 2 probably doesn't make sense. However, the warnings must include the fact that anyone inserting an additional location and then getting back a 424 has no way of knowing whether the 424 applies to the location it inserted or a location already present.

John 

> -----Original Message-----
> From: sipcore-bounces@ietf.org 
> [mailto:sipcore-bounces@ietf.org] On Behalf Of Adam Roach - 
> SIPCORE Chair
> Sent: 09 November 2010 09:10
> To: SIPCORE (Session Initiation Protocol Core) WG
> Subject: [sipcore] Summary: number of location headers
> 
> [as chair]
> 
> I just wanted to summarize where it looks like the discussion 
> ended up 
> on whether we constrain the number of location header fields in a SIP 
> message. From my review of the discussion, I believe that four people 
> have weighed in on the topic to voice support for an 
> arbitrary number of 
> location headers (albeit with a implementation warning that 
> doing so is 
> not advisable):
> 
> Martin Thompson: 
> http://www.ietf.org/mail-archive/web/sipcore/current/msg03576.html
> Richard Barnes: 
> http://www.ietf.org/mail-archive/web/sipcore/current/msg03580.html
> Keith Drage: 
> http://www.ietf.org/mail-archive/web/sipcore/current/msg03600.html
> Hannu Hietalahti: 
> http://www.ietf.org/mail-archive/web/sipcore/current/msg03619.html
> 
> And two people have agreed to go along with that direction, with 
> expressed reservations:
> 
> Jon Peterson: 
> http://www.ietf.org/mail-archive/web/sipcore/current/msg03601.html
> James Polk: 
> http://www.ietf.org/mail-archive/web/sipcore/current/msg03603.html
> 
> If any other working group participants have comments on this topic, 
> they are encouraged to make them quickly. Lacking any further 
> input, the 
> authors will be instructed to revise the document to allow an 
> arbitrary 
> number of location header fields, with an accompanying warning that 
> doing so is not recommended.
> 
> /a
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