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GEOPRIV Experiment at IETF 71

2008-03-10 20:26:53
Hi all,

Wanted to let folks know about an experiment that some participants from 
the GEOPRIV working group have put together for this IETF.  Using the 
IETF network infrastructure as a location source, we've set up a 
location server [1] that offers location information over the HTTP-based 
HELD protocol [2].  It works like this:

+--------+           +-----+           +---------------------+
| Client |---HELD----| LIS |-----------| IETF (NetDisco [3]) |
+--------+           +-----+           +---------------------+

1. Client submits HELD request
2. LIS queries NetDisco (over an ad-hoc interface) for location of an IP
3. NetDisco returns civicAddress XML for the AP to which the requested
IP is connected, e.g.:
    <ROOM>Franknlin 1/2</ROOM>
4. LIS inserts civicAddress into PIDF-LO into locationResponse and
returns to Client

The HELD server is written in PHP, and is based on the open-source HELD 
LIS written by Andrew Co. [4].

We have two clients for you to try out:

1. I wrote a small Java application [5] that pulls location from the 
HELD server and posts it as the status of a Jabber account.  For 
instance, while I was in SIPPING this afternoon, my status was:
Current location:
Civic Address:
Franklin 1/2
1201 Market Street
Philadelphia, PA 19107
Note: This app runs *alongside* your usual Jabber client, as a separate 
client, so you don't need to change anything about how you use Jabber. 
Requires Java 1.6.

2. Along with the open-source LIS from Andrew Co, there's Java client 
library and GUI that shows most of the features in 
draft-ietf-geopriv-http-location-delivery-05, including the creation and 
management of location references (URIs that refer to location).  You 
can download it at [6] (Note: (1) you need to download both the client 
library and the GUI; (2) requires Windows and Java 1.6.)

3. Karl Heinz Wolf from has enhanced the Zap! SIP client so that 
it will access location and send it out in SIP messages [7]

If you do give these tools a try, please send feedback to me and to the 
GEOPRIV working group list, <geopriv(_at_)ietf(_dot_)org>.

Thanks a lot,

[1] <>
[2] draft-ietf-geopriv-http-location-delivery-05
[3] <>
[4] <>
[5] <>
[6] <>
[7] <>
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