Research And Application Of Resource-Sharing System Based On P2P Technology

With the development and popularization of the Internet. The P2P is increasingly receiving attention and becomes a hotspot in computer network. Some of the benefits of P2P approach include improving scalability by avoiding dependency on centralized points; not only let network have the flexibility but also resolves network obstruct which is the most headachy problem in the concentrated type calculation nicely, eliminating the need for costly infrastructure by enabling direct communication among clients; As long as to takes the node that decentralized in P2P network into the valid control and managements, enabling resource aggregation. As the Web continues to grow in both content and the number of connected devices peer-to-peer computing is becoming increasingly popular. Popular software based on P2P technologies includes file sharing, distributed computing, and instant messenger services.JXTA is an open network computing platform designed for P2P computing which conceived by Sun Microsystems Inc. Its main purpose is to build up a whole set to be suffused with a P2P foundation agreement. Aiming at the existent problem of model of C/S, developing to standardized P2P service which integrating the existing P2P application, it provides a set of basic platform to carry out the P2P network and application. The term "JXTA" is short for juxtapose, as in side by side. The JXTA protocols are designed to be independent of programming languages and transport protocols.To deal with the problem of P2P such as network establishment, resources discovery, security of communication etc., that does a thorough research to JXTA which is the source-opened item of SUN, and carried on the analysis to the JXTA agreement. A application frame which designed to realize resources sharing is designed using corresponding ways and means, and solve the key problem with J2SE Reference Model based on JXTA. It realize the peer group's creation, find, join and leave and the resources' find, add, delete and download, and does a good analysis and research for Nat traverse and security in network, then uses some ways and means to solve them. Finally, it briefly summarizes the research results and views the prospect of the topic, and gives the direction of the future work.