客户端：读入用户输入的数据、目标端口和目标地址。

代理服务器：检测用户输入的目标地址是否合法，接受客户端发送的信息，并转发给服务端。

服务端：接受代理服务器端发送的信息，通过管道实现远程控制。



功能：数据转发，屏蔽一些服务器地址，使客户端无法访问，实现客户端和服务端的远程同步。-Client: read user input data, the destination port, and destination address. Proxy Server: detecting user input destination address is legitimate to accept the information sent by the client, and forward it to the service side. Server: accept the proxy server sends the remote control through the pipeline. Functions: data forwarding, to shield some server address, so that the client can not access the client and server remote synchronization.