P2P streaming media is defined as the product of the combination of the P2P technology and streaming media service. Compared with the traditional client / server mode, the technology takes full advantage of cache resources of the personal computers(peers). The all peers play the role of the servers at the same time, which decentralizes the services, reduce the load of the streaming media servers and the high requirements and high consumption of local network bandwidth. P2P streaming media have the widesprea...