Peer selection strategy is one of the core issues in P2P streaming system, because peers can not only become a provider of video streaming, but also can retrieve the video stream information from its neighbor peers. In this paper the idea of similar route method was used to detect autonomous systems (AS) and substitute the known full topology information of the AS with exact position of peers in the AS. As well as combine the traditional strategy of the smallest number of hops to select the peer. In addition to the excellence of the peer and the aggregate flow rate to choose the best peer or best peer set as the supply of newly joined peers. And solve the minimum-hop candidate peers with the same priority issues. Simulation results show that in the improved strategies the network congestion has been reduced compared with the previous strategies.
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