ECRIT Demonstration Richard Barnes John Bressler Kevin Doran Dan Gregory BBN Technologies

Agenda Goals for this demo Software architecture Demo scenario DEMO Summary & lessons learned

Goals Overarching goal: Demonstrate how the ECRIT architecture can work in practice, highlighting a few key points – Dynamic discovery of location resources – Dynamic discovery of PSAPs – Multi-protocol IP emergency communications Stay close to reality / deployability

PSAP High-level View of ECRIT Client Device LoST Client Location Client LoST Server Application Clients Location Server Application Clients Discovery Service

Software Architecture: Servers Application Clients: Re-using existing applications – SIP, Jabber, Skype, , etc. Basic LoST Server – 197 lines of PHP Basic HELD Server – 507 lines of Perl – Location from: DB, Google, Maxmind No new code for discovery – dhcpd configuration – dnsmasq configuration PSAP LoST Server Application Clients Location Server Discovery Service

Software Architecture: Clients Application Clients: Re-using existing applications – SIP, Jabber, Skype, , etc. Basic LoST Client – “ECRIT Resolver” as a Firefox extension – Only supports – 363 lines of Javascript / XUL – … including UI code Location Client: Re-using open- source “Internet Geolocation Toolkit” (igtk) Client Device LoST Client Location Client Application Clients

Software Architecture: igtk Multi-platform, multi-protocol location client – Platforms: Windows, Linux, Mac OS – Protocols: DHCP, HELD (with discovery), hooks to add other protocols Written in C++, designed to be lightweight – Interfaces to Java (via SWIG) and XPCOM Location Client HELD HTTP DHCP DNS XML WiFi DHCP XPCOM Java C++

Demo Scenario IP device roaming between on- campus and off-campus networks On campus, get campus emergency services – … except for fire dept. Off campus, get county emergency services PG County UMD

Demo Architecture LoST Server LAN 1 (DNS/DHCP) Client LIS 1 Internet LIS 2 LAN 2 (DNS/DHCP) “On Campus” Client Client Migrates Networks “Off Campus” UMD PSAP PG County PSAP

Router 2 “Off Campus” DHCPDNS Router 1 “On Campus” DHCPDNS Discovery in Action LoST Server Client LIS 1 Internet LIS 2 Client Client Migrates Networks UMD PSAP PG County PSAP

Discovering & Calling a PSAP with ECRIT Client LoST Server Location Information Server PSAP HELDHELD ECRITECRIT DHCP INFORM access domain PSAP URI DHCP/DNS Server DNS NAPTR (access domain) LIS URI location HELD LoST (location) connect

Standards Implemented Location: – DHCP location formats: RFC 4776, RFC 3825 – LIS Discovery: draft-ietf-geopriv-lis-discovery, RFC 3825 – HELD: draft-ietf-geopriv-http-location-delivery – HELD measurements: draft-thomson-geopriv-held-measurements – W3C Geolocation API LoST: RFC 5222

How real is this? Overall, pretty close. Only a few hand-provisioned values – APs: Static discovery values – LoST server: Static mappings – Location servers: Static location values – LoST client: Static LoST server URI – In reality, some things will need to be provisioned anyway Still missing a few features – Full compliance with LoST – Full compliance with ECRIT framework (e.g., location in SIP)

How real is this? E.g. you could deploy this in a jurisdiction by… Local authorities: – Making PSAPs reachable over SIP / Skype / XMPP / etc. – Provisioning appropriate LoST mappings into the server – Providing ISPs with a LoST URI for discovery ISPs: – Provisioning CPE with static LIS-discovery and LoST- discovery records – Adding code to the HELD server to interface to a local positioning system … and providing the client code to clients!

Summary The ECRIT framework allows clients to – Discover their location – Discover and contact their local PSAPs Complexity of server software is very low – Real location services will add some complexity… – … but re-using existing sources can mitigate – Local gateways can easily provide discovery service Complexity of client software is only a little higher – Mainly due to difficulty of cross-platform integration with low-level OS services (e.g., DHCP) – Increased OS integration could help