The experimental P2PNS implementation consists of two parts: A modified OpenSER SIP proxy and the overlay framework [http://www.oversim.org/ OverSim]. The SIP proxy connects to the OverSim P2PNS service via an XML-RPC interface.

The implementation is still in an early stage and several security mechanisms described in the [http://doc.tm.uka.de/2008/P2PNS_2008.pdf P2PNS paper] are not implemented yet. This page shows the current implementation status:

== Implemented Features ==

 * Various KBR protocols: Chord, Koorde, Pastry, Bamboo, Kademlia, Broose.
 * Different routing modes: semi-recursive, full-recursive, source-routing-recursive, iterative, exhaustive-iterative
 * Several security enhancements for iterative routing: disjoint paths, parallel RPCs and a sibling table
 * DHT layer with replication and majority decision
 * Optional two-stage name resolution (ID/Loc-split architecture)
 * XML-RPC interface to applications

== Work in progress ==
 * Zeroconf Boostrapping
 * Merging of overlay partitions
 * Caching layer
 * DHT security enhancements

== Not implemented yet ==
 * NodeID certificates
 * Message signatures
 * Caching layer