七个FTP的客户端和服务器端程序的源码，能够实现文件的上传，下载，修改，删除等诸多功能-7 FTP client and server applications, the source code files to upload and download, modification, deletion and many other functions

客户端检查本地文件修改时间和服务器文件时间对比，如果服务器更新，则程序自动升级,Client checks the local file server file modification time and the time contrast, if the update server, then automatically upgrade