Highlights of RFC 959WS_FTP ProL = Local byte size (files that need to be transferred using specific non-standard size bytes)The default representation type is ASCII Non-print.USER (USER NAME) USER <SP> <username> <CRLF> The argument field is a Telnet string identifying the user. The user identification is that which is required by the server for access to its file system.FTP RepliesIn the protocol conversation between an FTP client (such as WS_FTP Pro) and an FTP server, at least one server reply is sent to the FTP client in response to an FTP command. A reply consists of a three-digit code, followed by one line of text, and terminated by the Telnet end-of-line code.Positive Preliminary RepliesThese types of replies indicate that the requested action was taken and that another reply is to follow.110 Restart marker reply.120 Service ready in nnn minutes.125 Data connection already open; transfer starting.150 File status okay; about to open data connection.Positive Completion RepliesThese type of replies indicate that the requested action was taken and that the server is awaiting another command.200 Command okay.202 Command not implemented, superfluous at this site.211 System status, or system help reply.212 Directory status.213 File status.214 Help message on how to use the server or the meaning of a particularnon-standard command. This reply is useful only to the human user.215 NAME system type. Where NAME is an official system name.
