A P2P Streaming Media Service Platform-based Design

The P2P (Peer To Peer, equity network) is to refer to each nodes in distributed system is that the logic is reciprocal, the differentiation server and the customer hold the P2P frame model no longer compared with tradition C/S frame model, can carry out direct data communication between every node in system, needs a node to transit shipment no longer or seldom needs. Adopt this kind of frame queen , every node both and can be the user who serves , also can be the provider who serves, such is therefore likely to fully utilize every end instrument treatment ability, distributed serves messenger low cost becoming possibility.Adopt the P2P technology in video frequency stream medium system , can fully utilize the customer holds idle computer ability and customer holding the computer exit bandwidth resource, general original the stream medium service focusing on the server disperses to each customers end, resource reaches lessening server exit bandwidth server oneself function restricting, make to be that more consumer providing services become possibility on original resource basis, make rubbings from the application range having shown network video frequency business greatly.Some key technologies of the article have been developed research, concrete to P2P in pattern stream medium system as follows:The convection medium and the P2P stream medium carry out a summary, specifically for P2P stream medium data compression technology, application group broadcast technology, the application QoS control flow, medium transfers an agreement , the synchronic technology of medium waits to have carried out research.After the model carries out research on P2P stream medium service, P2P having set off from the problem model, choosing serves a prototype. Have studied SSALMP (single origin and development medium) is hit by the process establishing a group , joining a group , leaving the group and node crash handling by agreement. Have analyzed contrast at the same time IP multicast has been jammed controlling the model and under the control of model applying tier of multicast being jammed , has adopt one to control a scheme owing to that the rate chasing springs to be jammed under realistic conditions applying in be geared to the needs of stream medium.The system structure having studied the P2P stream medium software?ˉs makes use of JMF exploitation implement to carry out software realization according to being allotted the thought that the module designs. Be to carry out a testing on system finally. Hanging from system testing environment builds the testing to function, indicatesrequest designed that P2P stream medium service.