In 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.
These 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. |
These 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 particular non-standard command. This reply is useful only to the human user. |
215 |
NAME system type. Where NAME is an official system name. |
220 |
Service ready for new user. |
221 |
Service closing control connection. Logged out if appropriate. |
225 |
Data connection open; no transfer in progress. |
226 |
Closing data connection. Requested file action successful (for example, file transfer or file abort). |
227 |
Entering Passive Mode (h1,h2,h3,h4,p1,p2). |
230 |
User logged in, proceed. |
250 |
Requested file action okay, completed. |
257 |
"PATHNAME" created. |
These types of replies indicate that the requested action was taken and that the server is awaiting further information to complete the request.
331 |
User name okay, need password. |
332 |
Need account for login. |
350 |
Requested file action pending further information. |
These types of replies indicate that the command was not accepted; the requested action was not taken. However, the error is temporary and the action may be requested again.
421 |
Service not available, closing control connection. This may be a reply to any command if the service knows it must shut down. |
425 |
Can't open data connection. |
426 |
Connection closed; transfer aborted. |
450 |
Requested file action not taken. File unavailable (e.g., file busy). |
451 |
Requested action aborted: local error in processing. |
452 |
Requested action not taken. Insufficient storage space in system. |
These types of replies indicate that the command was not accepted; the requested action was not taken. The FTP client is "discouraged" from repeating the same exact request.
500 |
Syntax error, command unrecognized. This may include errors such as command line too long. |
501 |
Syntax error in parameters or arguments. |
502 |
Command not implemented. |
503 |
Bad sequence of commands. |
504 |
Command not implemented for that parameter. |
530 |
Not logged in. |
532 |
Need account for storing files. |
550 |
Requested action not taken. File unavailable; e.g., file not found, no access. |
551 |
Requested action aborted: page type unknown. |
552 |
Requested file action aborted. Exceeded storage allocation for current directory or dataset. |
553 |
Requested action not taken. File name not allowed. |