FTP 200 Command OK vs 504 Parameter Not Implemented
FTP 200 (Command OK) is a 2xx Positive Completion response, while 504 (Parameter Not Implemented) is a 5xx Permanent Negative response. 200 indicates that the command has been successfully executed. This is a general acknowledgment that the command was understood and carried out. In contrast, 504 means that command not implemented for that parameter. The command is supported but not with the specific parameter value provided.
Mô tả
The command has been successfully executed. This is a general acknowledgment that the command was understood and carried out.
Khi bạn thấy mã này
After issuing any command that completes successfully, such as TYPE, MODE, or NOOP.
Cách khắc phục
No fix needed — the command succeeded. This is the standard positive response for commands that don't return data.
Mô tả
Command not implemented for that parameter. The command is supported but not with the specific parameter value provided.
Khi bạn thấy mã này
When you use an unsupported transfer type or mode, such as TYPE E (EBCDIC) on a server that only supports ASCII and binary.
Cách khắc phục
Use a supported parameter value. Check the server documentation or use FEAT to see which parameter options are available.
Sự khác biệt chính
200 is a 2xx Positive Completion response, while 504 is a 5xx Permanent Negative response.
FTP 200: The command has been successfully executed. This is a general acknowledgment that the command was understood and carried out.
FTP 504: Command not implemented for that parameter. The command is supported but not with the specific parameter value provided.
You encounter 200 when after issuing any command that completes successfully, such as TYPE, MODE, or NOOP.
You encounter 504 when when you use an unsupported transfer type or mode, such as TYPE E (EBCDIC) on a server that only supports ASCII and binary.
Khi nào dùng cái nào
For 200 (Command OK): No fix needed — the command succeeded. This is the standard positive response for commands that don't return data. For 504 (Parameter Not Implemented): Use a supported parameter value. Check the server documentation or use FEAT to see which parameter options are available.