Study On JXTA-Based File Sharing System In LAN

P2P, a hot field of current file sharing technology research, could make up a virtual network with almost unlimited expansion, using the "idle" resources of ordinary computers in today's network. The computers in such a network are all equal, and they named Peers. Peers provide resources to other Peers, access sharing resources from other Peers conveniently, thereby greatly facilitating the exchange of information.A P2P resource sharing system needs to resolve two issues: resource search and resource transmission. Because P2P itself has distributed storage characteristics which make it realtively easy to achieve resource transmission mechanism, it is difficult that how to find Peers which have resources. To resoulve this issue, taking into account the factors of the resource searching speed, network stability and load banlance, this paper use the following techniques and methods: In the network model area, it proposes a new hybrid network. According to the different services provided by entities, it devides the network into three levels: Congregrate, Group and Field, forming a new level of network. In dynamic linking, it uses the preferred Rendezvous Peer strategy to balance the network flow, the information cache strategy to increase the speed. It updates and compensates the neighber list dynamically to make the Peer connecting stably as while as ensuring self effectiveness. In the search area, it proposes the combination of DHT and random work method, which, based on different levels of Peers, use different ways of information transmitting and forwording to resolve the LAN search issues. To ensure the security of LAN data transmission, this paper usesPoblano model. In subsequent research, we could provide the entire LAN P2P as a service...