FTP 110 Restart Marker Reply vs 451 Local Error
FTP 110 (Restart Marker Reply) is a 1xx Positive Preliminary response, while 451 (Local Error) is a 4xx Transient Negative response. 110 indicates that the server is sending a restart marker reply. The text is exact and not left to interpretation. This marker is used to indicate the point at which a file transfer should be restarted. In contrast, 451 means that requested action aborted: local error in processing. The server encountered an unexpected error while trying to complete the command.
描述
The server is sending a restart marker reply. The text is exact and not left to interpretation. This marker is used to indicate the point at which a file transfer should be restarted.
何时出现
During a resumed file transfer when the server confirms the restart position in the data stream.
如何修复
No fix needed — this is a normal response during transfer recovery. If restarts keep failing, verify the marker format matches what your client expects.
描述
Requested action aborted: local error in processing. The server encountered an unexpected error while trying to complete the command.
何时出现
When the server has an internal issue like a disk I/O error, memory shortage, or filesystem problem during command processing.
如何修复
Retry the command. If the error persists, contact the server administrator to check disk health, available memory, and server logs.
主要区别
110 is a 1xx Positive Preliminary response, while 451 is a 4xx Transient Negative response.
FTP 110: The server is sending a restart marker reply. The text is exact and not left to interpretation. This marker is used to indicate the point at which a file transfer should be restarted.
FTP 451: Requested action aborted: local error in processing. The server encountered an unexpected error while trying to complete the command.
You encounter 110 when during a resumed file transfer when the server confirms the restart position in the data stream.
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.
何时使用哪个
For 110 (Restart Marker Reply): No fix needed — this is a normal response during transfer recovery. If restarts keep failing, verify the marker format matches what your client expects. For 451 (Local Error): Retry the command. If the error persists, contact the server administrator to check disk health, available memory, and server logs.