WinSock 2.0 正在连接到 down.cndzq.com 已连接到 down.cndzq.com 端口 21 220 Serv-U FTP Server v6.4 for WinSock ready... USER ftp22 331 User name okay, need password. PASS (hidden) 230 User logged in, proceed. SYST 215 UNIX Type: L8 PWD 257 "/" is current directory. TYPE A 200 Type set to A. PASV 227 Entering Passive Mode (58,251,49,3,7,147) 数据 Socket 错误: 连接已拒绝