程序分为服务器端和客户端两部分，服务器端创建一个用于侦听的流式套接字slisten，客户端创建一个用于建立连接的流式套接字sConnect，用sConnect向该服务器发出连接请求。-Program is divided into server and client in two parts, the server creates a socket for listening to streaming slisten, the client creates a connection for st