FTP 120 Service Ready Soon vs 451 Local Error
FTP 120 (Service Ready Soon) is a 1xx Positive Preliminary response, while 451 (Local Error) is a 4xx Transient 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, 451 means that requested action aborted: local error in processing. The server encountered an unexpected error while trying to complete the command.
Описание
The service will be ready in a certain number of minutes. The server is not yet available but expects to be shortly.
Когда вы это видите
When connecting to an FTP server that is starting up or temporarily busy with maintenance tasks.
Как исправить
Wait the indicated number of minutes and try connecting again. If the server never becomes ready, contact the server administrator.
Описание
Requested action aborted: local error in processing. The server encountered an unexpected error while trying to complete the command.
Когда вы это видите
When the server has an internal issue like a disk I/O error, memory shortage, or filesystem problem during command processing.
Как исправить
Retry the command. If the error persists, contact the server administrator to check disk health, available memory, and server logs.
Ключевые различия
120 is a 1xx Positive Preliminary response, while 451 is a 4xx Transient 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 451: Requested action aborted: local error in processing. The server encountered an unexpected error while trying to complete the command.
You encounter 120 when when connecting to an FTP server that is starting up or temporarily busy with maintenance tasks.
You encounter 451 when when the server has an internal issue like a disk I/O error, memory shortage, or filesystem problem during command processing.
Когда что использовать
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 451 (Local Error): Retry the command. If the error persists, contact the server administrator to check disk health, available memory, and server logs.