FTP 215 System Type vs 426 Connection Closed
FTP 215 (System Type) is a 2xx Positive Completion response, while 426 (Connection Closed) is a 4xx Transient Negative response. 215 indicates that the NAME system type, where NAME is an official system name from the list in the Assigned Numbers document. Reports the operating system of the server. In contrast, 426 means that connection closed; transfer aborted. The data connection was closed unexpectedly during a file transfer.
Описание
The NAME system type, where NAME is an official system name from the list in the Assigned Numbers document. Reports the operating system of the server.
Когда вы это видите
After issuing the SYST command. The server reports its operating system type, commonly 'UNIX Type: L8' or 'Windows_NT'.
Как исправить
No fix needed — use this information to adjust path separators and line endings for the server's OS type.
Описание
Connection closed; transfer aborted. The data connection was closed unexpectedly during a file transfer.
Когда вы это видите
When a file transfer is interrupted due to a network timeout, client disconnect, or the data connection dropping mid-transfer.
Как исправить
Retry the transfer. If it keeps failing, check network stability, increase timeout values, and verify there are no firewalls killing idle connections.
Ключевые различия
215 is a 2xx Positive Completion response, while 426 is a 4xx Transient Negative response.
FTP 215: The NAME system type, where NAME is an official system name from the list in the Assigned Numbers document. Reports the operating system of the server.
FTP 426: Connection closed; transfer aborted. The data connection was closed unexpectedly during a file transfer.
You encounter 215 when after issuing the SYST command. The server reports its operating system type, commonly 'UNIX Type: L8' or 'Windows_NT'.
You encounter 426 when when a file transfer is interrupted due to a network timeout, client disconnect, or the data connection dropping mid-transfer.
Когда что использовать
For 215 (System Type): No fix needed — use this information to adjust path separators and line endings for the server's OS type. For 426 (Connection Closed): Retry the transfer. If it keeps failing, check network stability, increase timeout values, and verify there are no firewalls killing idle connections.