FTP 125 Data Connection Open vs 250 File Action OK
FTP 125 (Data Connection Open) is a 1xx Positive Preliminary response, while 250 (File Action OK) is a 2xx Positive Completion response. 125 indicates that the data connection is already open and the transfer is beginning. No need to open a new data connection. In contrast, 250 means that requested file action okay, completed. The operation on the file or directory was successful.
説明
The data connection is already open and the transfer is beginning. No need to open a new data connection.
このコードが表示される場合
When the server reuses an existing data connection for a file transfer instead of opening a new one.
解決方法
No fix needed — the transfer is starting immediately. Your client should begin reading or writing data on the existing connection.
説明
Requested file action okay, completed. The operation on the file or directory was successful.
このコードが表示される場合
After successfully changing directories (CWD), deleting a file (DELE), or renaming a file (RNTO).
解決方法
No fix needed — the file operation completed successfully.
主な違い
125 is a 1xx Positive Preliminary response, while 250 is a 2xx Positive Completion response.
FTP 125: The data connection is already open and the transfer is beginning. No need to open a new data connection.
FTP 250: Requested file action okay, completed. The operation on the file or directory was successful.
You encounter 125 when when the server reuses an existing data connection for a file transfer instead of opening a new one.
You encounter 250 when after successfully changing directories (CWD), deleting a file (DELE), or renaming a file (RNTO).
どちらをいつ使うか
For 125 (Data Connection Open): No fix needed — the transfer is starting immediately. Your client should begin reading or writing data on the existing connection. For 250 (File Action OK): No fix needed — the file operation completed successfully.