FTP服务程序,实现了FTP的基本功能,如login,cd,list等-FTP service procedures, the FTP achieve the basic functions, such as login, cd, list, etc.

network socket programing. ftp服务器程序，有USER,PASS,PASV,PORT,LIST,RETR命令，在telnet下可以调试。-network socket programing. Ftp server, have USER, PASS, PASV, PORT, LIST, RETR command, In telnet can be debugging.