此程序是我自己开发的连锁超市方案中数据交换的应用实例，所以客户端和服务端的代码有点多，但多是与通信本身无关，所实现的功能是将本地Local文件夹与远程Remote文件夹的.rs文件互相进行传送。-this program is my own development of the supermarket chain data exchange program of the application, client and server-side code a bit more, but most o