Searching mechanism based on network topological and peer interest in P2P system

End-user latency is the most important performance metric for searching mechanism.End-user latency depends on the network transmission latency in P2P system.A searching mechanism aware of network topological and peer interest is proposed.When searching,peers can hit the peers with the shortest hop and similar interest to reduce routing distance and duplicates of searching message,so reduce network latency,improve the network efficiency.