| Since 1990 s, peer to peer network is widely used and applied with the improvement of computer performance. In the recent year, many researches have been focused on large-scale distribution system and cloud calculation. Hence peer to peer network is popular, because the potential is better utilized. P2 P network is a self organizing overlay of internet node. The network bandwidth and potential are fully utilized and the utilization of network is well enhanced. Therefore the important problem of P2 Psystem is to maintain a large amount of connect of every node.Failure detector is one of the most fundamental configuration of P2 P technology,and it has great importance on improving the fault-tolerance performance and the network efficiency of P2 P network. However,there is a shortcoming of efficient platform for failure detection algorithm. In order to solve this problem, this paper brings a simulation platform of P2 P failure detection algorithm and proposes the details of P2 P and three protocols. There are three classical P2 P detection algorithm including NFD-E failure detector algorithm, failure detector technology and failure detector algorithm. The Over Sim is used to simulate and test and failure detector.Also there is Over Sim’s introduction,including its platform structure and function of every model.The main purpose of this paper is to design and accomplish the failure detection algorithm of peer-to-peer networks. After analyzing three failure detection algorithm, the requirement of design is given and the accomplishment of failure detection algorithm including the pretreatment module, failure detection algorithm module and data conversion module is proposed.The accomplishment also provides other algorithm interface for user to simulate the Qos of the failure detection algorithm. |