P2P技术打破了传统的Client/Server模式，在对等网络中，每个节点的地位都是相同的，具备客户端和服务器双重特性，可以同时作为服务使用者和服务提供者。-P2P technology to break the traditional Client/Server model, in a peer-to-peer network, each node status is the same with the dual characteristics of the client and server, both as service users and service providers.