测试结果: n$g g$<
WinSock 2.0 -- OpenSSL 0.9.7d 17 Mar 2004 A,{X<mLFb
[右] 正在连接到 218.66.102.120 -> IP=218.66.102.120 端口=21 ^&MMtWR
[右] 已连接到 218.66.102.120 ya0L8`q
[右] 220 Serv-U FTP Server v6.1 for WinSock ready... vcy}ZqWBO
[右] USER bbs.91.com 3,+)3,N
[右] 331 User name okay, need password. t&T0E.kh*X
[右] PASS (hidden) Jp=eh
[右] 230 User logged in, proceed. m{
.'55
[右] SYST &u( eu'Q3
[右] 215 UNIX Type: L8 <UOx >=h
[右] FEAT fpJM)HU
[右] 211-Extension supported NK2Kw{c"iI
[右] CLNT m_\w)
[右] MDTM o7)<