FTP 212 Directory Status vs 331 Username OK, Need Password
FTP 212 (Directory Status) is a 2xx Positive Completion response, while 331 (Username OK, Need Password) is a 3xx Positive Intermediate response. 212 indicates that directory status reply. The server provides information about the current directory or a specified directory. In contrast, 331 means that user name okay, need password. The server recognized the username and is waiting for the corresponding password to complete authentication.
描述
Directory status reply. The server provides information about the current directory or a specified directory.
何时出现
After issuing the STAT command on a directory, the server returns the directory listing or status information.
如何修复
No fix needed — this is an informational response showing directory contents or status.
描述
User name okay, need password. The server recognized the username and is waiting for the corresponding password to complete authentication.
何时出现
After sending the USER command with a valid username. The server is prompting for the PASS command.
如何修复
Send the PASS command with the correct password. If you get 530 after PASS, the password is wrong — verify your credentials.
主要区别
212 is a 2xx Positive Completion response, while 331 is a 3xx Positive Intermediate response.
FTP 212: Directory status reply. The server provides information about the current directory or a specified directory.
FTP 331: User name okay, need password. The server recognized the username and is waiting for the corresponding password to complete authentication.
You encounter 212 when after issuing the STAT command on a directory, the server returns the directory listing or status information.
You encounter 331 when after sending the USER command with a valid username. The server is prompting for the PASS command.
何时使用哪个
For 212 (Directory Status): No fix needed — this is an informational response showing directory contents or status. For 331 (Username OK, Need Password): Send the PASS command with the correct password. If you get 530 after PASS, the password is wrong — verify your credentials.