主要实现代理服务器，英文全称是 Proxy Server，顾名思义，其功能就是代理网络用户去访问和接收网络信息。形象的说来，它就是网络信息的中转站。-The main achievement of the proxy server, the English name is the Proxy Server, as its name implies, its function is the agent network users to access and receive information