Re: [Geopriv] Explicit Indication of Location Object Consumer

Hi Brian,

Brian Rosen wrote:
> 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.

Why do you expect the outbound proxy to 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.

I can buy the remark by James that you would put the location object 
into the body to tell the proxy not to look at it.

S/MIME is nice; but maybe it is not always available.

Ciao
Hannes

> 
> 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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> 
> 
> 


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