摘要： 本文讲的是ftp state code， 来源：http://blog.chinaunix.net/uid-23092563-id-194229.html Code Descriptio
The requested action was initiated; expect another reply before proceeding with a new command.
Restart marker reply.
Service ready in nn minutes.
Data Connection already open, transfer starting.
File status okay, about to open data connection. FTP uses two ports: 21 for sending commands, and 20 for sending data. A status code of 150 indicates that the server is about to open a new connection on port 20 to send some data.
The requested action has been successfully completed.
Command not implemented, superfluous at this site.
System status, or system help reply.
NAME system type. (Where NAME is an official system name from the list in the Assigned Numbers document.)
Service ready for new user.
Service closing control connection. Logged out if appropriate.
Data connection open; no transfer in progress.
Closing data connection. Requested file action successful (for example; file transfer or file abort). The command opens a data connection on port 20 to perform an action, such as transferring a file. This action successfully completes, and the data connection is closed.
Entering Passive Mode.
User logged in, proceed. This status code appears after the client sends the correct password. It indicates that the user has successfully logged on.
Requested file action okay, completed.
The command has been accepted, but the requested action is on hold, pending receipt of further information.
User name okay, need password.
You see this status code after the client sends a user name, regardless of whether the user name that is provided is a valid account on the system.
Need account for login.
Provide login credentials
Requested file action pending further information.
The command was not accepted and the requested action did not take place, but the error condition is temporary and the action may be requested again.
Error 421 Service not available, closing control connection.
Error 421 User limit reached
Error 421 You are not authorized to make the connection
Error 421 Max connections reached
Error 421 Max connections exceeded
Try logging in later.
Cannot open data connection.
Change from PASV to PORT mode, check your firewall settings, or try to connect via HTTP.
Connection closed; transfer aborted. The command opens a data connection to perform an action, but that action is canceled, and the data connection is closed.
Try logging back in; contact your hosting provider to check if you need to increase your hosting account; try disabling the firewall on your PC to see if that solves the problem. If not, contact your hosting provider or ISP.
Requested file action not taken. File unavailable (e.g., file busy).
Try again later.
Requested action aborted: local error in processing.
Ensure command and parameters were typed correctly.
Requested action not taken. Insufficient storage space in system.
Ask FTP administrator to increase allotted storage space, or archive/delete remote files.
The command was not accepted and the requested action did not take place.
Syntax error, command unrecognized, command line too long.
Try switching to passive mode.
Syntax error in parameters or arguments.
Verify your input; i.e., make sure there are no erroneous characters, spaces, etc.
Command not implemented.
The server does not support this command.
Bad sequence of commands.
Verify command sequence.
Command not implemented for that parameter.
Ensure entered parameters are correct.
User not logged in.
Ensure that you typed the correct user name and password combination. Some servers use this code instead of 421 when the user limit is reached
Need account for storing files.
Logged in user does not have permission to store files on remote server.
Requested action not taken. File unavailable, not found, not accessible
Verify that you are attempting to connect to the correct server/location. The administrator of the remote server must provide you with permission to connect via FTP.
Requested file action aborted. Exceeded storage allocation.
More disk space is needed. Archive files on the remote server that you no longer need.
Requested action not taken. File name not allowed.
Change the file name or delete spaces/special characters in the file name.
Common Winsock Error Codes (complete list of Winsock error codes)
Connection reset by peer. The connection was forcibly closed by the remote host.
Cannot connect to remote server (Generally a time-out error).
Try switching from PASV to PORT mode, or try increasing the time-out value.
Cannot connect to remote server. The connection is actively refused by the server.
Try switching the connection port.
Directory not empty. The server will not delete this directory while there are files/folders in it.
If you want to remove the directory, first archive or delete the files in it.
Too many users, server is full.
Try logging in at another time.