Research And Realization On Tunnel Technology In Peer-to-Peer Network

With the rapid development of Internet and multimedia,the deepen of the distributed compute, streaming media order based on the Peer-to-Peer network has become a research hot spot.Peers communication each other is essential for streaming media order,it is crucial for the efficiency and security of the Internet.UDP Hole Punching enables two clients to set up a direct communication with the help of a well-known rendezvous server, which the clients are both behind NATs for the current Internet.This technology has some deficiencies.The gateway inquires about the address list,when the datagram come to the gateway.So the transportation time increase.And in the transportation process,datagram is unsafe.Finally.UDP Hole Punching is the same with Cone NAT.These question used to induce movies halt and sound intermittence in the practicality.So it is significative to research a technology,which is beneficial to advance the efficiency of communication.The thesis first introduce the research background,development nowadays,characteristic of p2p network.We go deep into discuss that how through NATs communication between peers,researching present technologies and analyzing their principle.Ulteriorly analysing the principle of tunnel technology.It puts forward a new multilayer encapsulation method of tunnel technology for private address behind different NATs based on p2p.And to do research for multicast tunnel,present a project for multicast tunnel based on p2p.We validate the scheme by simulation.Finally,the thesis summarizes our work and points out the research direction in future.