RE: [Geopriv] Explicit Indication of Location Object Consumer

I don't see this as a problem.  

Let's take the non-emergency case.

If I call [email protected], and I want location based routing, I put
my location header in the call, and send the call with TLS.  My outbound
proxy will properly ignore it.  The pizza-hut domain is the one that wants
to do location based routing, it will get the location and send it off.  I
don't need to tell it to do that.  I could imagine a generic location based
routing proxy, but I would not think we would want to mark the location
header as the way to get it invoked; we need something else (directly, or
indirectly, a Route header) to do that.

If I want the endpoint to get it, then I protect it with S/MIME and no proxy
sees it.

Brian

-----Original Message-----
From: Tschofenig, Hannes [mailto:[email protected]] 
Sent: Monday, May 22, 2006 10:54 AM
To: Brian Rosen; Hannes Tschofenig; [email protected]; [email protected]
Subject: AW: [Geopriv] Explicit Indication of Location Object Consumer

Hi Brian, 

> I would say no.  If the location is not needed by proxies, 
> then I would say
> you MUST protect it (S/MIME), or it will not be private.
I am less concerned about the security aspects here and more focused the
protocol operation first. 
Typically, it is good to know for a device whether it has to process the
content of the message or not.  

If you want to prevent intermediaries to inspect your location object
then S/MIME might be a choice (at least on paper). 

> 
> If you have to route on it (emergency or otherwise), then you 
> have to send
> it with TLS, and the proxies can see it. 
> 
> Brian

Ciao
Hannes

> 
> -----Original Message-----
> From: Hannes Tschofenig [mailto:[email protected]] 
> Sent: Sunday, May 21, 2006 7:40 AM
> To: [email protected]; [email protected]
> Subject: [Geopriv] Explicit Indication of Location Object Consumer
> 
> Hi James
> Hi Brian,
> 
> do you plan to put additional info into the SIP message to 
> indicate who 
> should consume the Location Object (explicity rather than 
> implicit info)?
> 
> Here is an example: Assume that SIP UA Alice wants to give 
> Bob location 
> information (via reference). Now, Alice could easily indicate that it 
> wants Bob to resolve the reference and to process the 
> location object. 
> Stating this explicitly would prevent proxies to resolve it and to 
> process the location object.
> 
> Ciao
> Hannes
> 
> 
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