Analysis Of Thunder's P2SP Structure And Service Policy

Recently a software named Thunder is almost the most popular downloading tools especially when p2p downloading tools such as BT and eMule are strongly blamed and forced-out. It is known that the num of its users is up to 160,000,000 billion. However, data is encrypted while transferred and there is no conclusion whether Thunder is involved in Leeching File Gate. As far as we know, there is not ant systemic research on it. Therefore, we begin to unreveal the mechanism and service policy of Thunder through a measurement study.In this paper we mainly design two kinds of script. Thunder work procedure measurement is to analyze Thunder's principle and policy measurement is to figure out Thunder's service policy. During experiments we captured about 9GB bytes Thunder application data. Based on off-line data analysis, we have a primary knowledge of its protocol and illustrate its structure clearly for the first time. This paper present one methodology named Responded Response of a Contract which is successfully applied to solving the problem of Thunder's service policy conclusion.Ground on our measurement and analysis we have carried out new localization on Thunder system. Thunder provides a platform with service policy and security policy on condition of comprising all kinds of file distribution modes such as C/S and p2p. And it attempts to cultivate network service mode with operation pattern through providing contract service policy. As a public platform, it carries out large-scale practice with coordinate service policy and security policy on Internet. Meanwhile, it proves that proper coordinate service can be accepted both by gateway website and users whose service quality and security demands are quite different.