2004-08-18 01:46:04.181 正在连接 211.148.131.6:21
2004-08-18 01:46:04.211 Socket已连接，等待欢迎信息
2004-08-18 01:46:04.341 220 Serv-U FTP Server v5.1 for WinSock ready...
2004-08-18 01:46:04.351 USER bbs.f234.com
2004-08-18 01:46:04.411 331 User name okay, need password.
2004-08-18 01:46:04.421 PASS ********
2004-08-18 01:46:04.492 530 Not logged in, only one session from same IP allowed at a time.
2004-08-18 01:46:04.492 登录不成功
2004-08-18 01:46:04.512 等待 5 秒后重试
2004-08-18 01:46:09.529 正在连接 211.148.131.6:21
2004-08-18 01:46:09.569 Socket已连接，等待欢迎信息
2004-08-18 01:46:09.679 220 Serv-U FTP Server v5.1 for WinSock ready...
2004-08-18 01:46:09.679 USER bbs.f234.com
2004-08-18 01:46:09.759 331 User name okay, need password.
2004-08-18 01:46:09.759 PASS ********
2004-08-18 01:46:09.829 530 Not logged in, only one session from same IP allowed at a time.
2004-08-18 01:46:09.829 登录不成功
2004-08-18 01:46:09.839 等待 5 秒后重试

2004-08-18 01:46:04.492 530 Not logged in, only one session from same IP allowed at a time.
这个就代表没有用单线程
（不要同时下几个文件）
（插嘴了……）
（抢论坛重要人士说话希望不会遭天谴（晕……））