FTP 120 Service Ready Soon vs 504 Parameter Not Implemented
FTP 120 (Service Ready Soon) is a 1xx Positive Preliminary response, while 504 (Parameter Not Implemented) is a 5xx Permanent Negative response. 120 indicates that the service will be ready in a certain number of minutes. The server is not yet available but expects to be shortly. 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 service will be ready in a certain number of minutes. The server is not yet available but expects to be shortly.
Khi bạn thấy mã này
When connecting to an FTP server that is starting up or temporarily busy with maintenance tasks.
Cách khắc phục
Wait the indicated number of minutes and try connecting again. If the server never becomes ready, contact the server administrator.
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
120 is a 1xx Positive Preliminary response, while 504 is a 5xx Permanent Negative response.
FTP 120: The service will be ready in a certain number of minutes. The server is not yet available but expects to be shortly.
FTP 504: Command not implemented for that parameter. The command is supported but not with the specific parameter value provided.
You encounter 120 when when connecting to an FTP server that is starting up or temporarily busy with maintenance tasks.
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 120 (Service Ready Soon): Wait the indicated number of minutes and try connecting again. If the server never becomes ready, contact the server administrator. For 504 (Parameter Not Implemented): Use a supported parameter value. Check the server documentation or use FEAT to see which parameter options are available.