本程序仅作为学习用, 我基本实现了网络通讯部分，相当于主要框架已做出来了，但程序未经过严格测试，如运行过程中出现异常, 请自己修改源代码纠正错误。 -This procedure is only for learning purposes, I basically realized the network communication section, the equivalent of the main frame has been made out, but the program has