A Node State-Based Adaptive Topology Protocol for P2P Networks

A node state-based adaptive topology protocol (NSATP) for file-sharing P2P network is proposed in this paper. Node state model which takes trust and contribution two behavior characteristics of nodes into account ensures that the proposed protocol provides incentive to cooperative nodes and forms impartial topologies. We construct the protocol by defining two kinds of primitives based on KQML and specifying three mechanisms in ECA to implement those primitives. Experimental results show that the resulting topologies are more efficient and have better performance compared with adaptive peer-to-peer topologies (APT).