ftp服务器端例子，监听客户端登录功能，比价简单，结合前面客户端例子一起用-ftp server example, listen for client sign-on feature parity simple, combined with the previous example with the client

ftp上传程序，希望对您有所帮助。。。。内含源程序服务器和客户端-ftp upload process, I hope for your help. . . . Contains the source server and client