Re: [Geopriv] Long review of draft-ietf-geopriv-loc-filters-07

["Hannes Tschofenig" <Hannes.Tschofenig at gmx.net>]

Hi James, 

Thanks for your detailed review. I am in the process of updating it and have
comments here and there. 

Here is one:

Draft Text:

--------

<?xml version="1.0" encoding="UTF-8"?>
<filter-set xmlns="urn:ietf:params:xml:ns:simple-filter">
    <ns-bindings>
        <ns-binding prefix="dyn" 
            urn="urn:ietf:params:xml:schema:pidf:dynamic"/>        
    </ns-bindings>
    <filter id="123" uri="sip:presentity at example.com">
        <trigger>
            <changed by="3"> [<---James]
              //dyn:speed
            </changed>
        </trigger>
    </filter>
</filter-set>

------

[James] 

I get the XML,
but I don't see what the speed now is of
the device/target?
What if this device is moving at 200kmph,
where would that be placed in the XML?
Of, is this left for the application at the
subscriber to calculate?
If the latter is true, something needs to be
said about this expectation.

------

The filter would not tell you what the current speed is. 

The current document only supports 'by' and hence you cannot say something
like 'tell me when he goes faster than 100kmph'. 

Ciao
Hannes