Abstract: After extensive investigations and applications in the past years, the research efforts of Peer-to-Peer(P2P)networking have been turned to the improvement of P2P systems design and deployment, application extension, and standardization, other than the development of P2P protocols and algorithms before. In this survey, we presented recent advances of P2P networking research, including theoretical modeling and analysis of P2P systems, hybrid systems of content delivery network(CDN) and P2P,P2P traffic control,application of network coding to P2P systems,P2P appli- canon extension,and standardization. Finally,we summarized the challenges for further studies and deployment of P2P systems.

Key words: Peer-to-Peer(P2P) networks, P2P system modeling, Content delivery networks, Network coding, hraffic control, Network game, Social networks