Theoretical Analysis And Implementation On Peer-to-Peer Media Streaming Transmission

The P2P-based streaming media technology is very promising and has two advantages. First, because P2P-based streaming media network can distribute media data without the support of routers and specific network infrastructure, it is cost-effective and easy to deploy. Second, a streaming media user can not only download streaming media, but also supply streaming media to other users. Therefore, the user groups' scale can be expanded, and the more the demands increase, the more the available resources increase. As the peers in the P2P-based streaming media network are not stable, the P2P streaming media system needs improvement in the fields of file location technology, peer selection technology, fault-tolerance and security mechanism. Moreover, challenges such as managing the nodes, constructing a distribution tree, coping with the unpredictable failure of nodes, and adapting to changes in the network, also existThis paper conducts in-depth research on P2P-based streaming media technology, and an algorithm to dynamic select active data sending nodes based on network condition and an optimal media data assignment algorithm, which results in minimum buffering delay in the consequent streaming session. And implement a P2P-based file transmission system by JXTA, and find a way to resolve the problem of P2P-based streaming media order programme. By tests, this P2P-based streaming media order programme can improve expansibility of sever.