FTP 125 Data Connection Open vs 226 Closing Data Connection
FTP 125 (Data Connection Open) is a 1xx Positive Preliminary response, while 226 (Closing Data Connection) 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, 226 means that closing data connection. The requested file action was successful and the data connection is being closed.
描述
The data connection is already open and the transfer is beginning. No need to open a new data connection.
何时出现
When the server reuses an existing data connection for a file transfer instead of opening a new one.
如何修复
No fix needed — the transfer is starting immediately. Your client should begin reading or writing data on the existing connection.
描述
Closing data connection. The requested file action was successful and the data connection is being closed.
何时出现
After a file transfer, directory listing, or other data operation completes successfully.
如何修复
No fix needed — the transfer completed successfully. The data connection is closed and a new one will be opened for the next transfer.
主要区别
125 is a 1xx Positive Preliminary response, while 226 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 226: Closing data connection. The requested file action was successful and the data connection is being closed.
You encounter 125 when when the server reuses an existing data connection for a file transfer instead of opening a new one.
You encounter 226 when after a file transfer, directory listing, or other data operation completes successfully.
何时使用哪个
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 226 (Closing Data Connection): No fix needed — the transfer completed successfully. The data connection is closed and a new one will be opened for the next transfer.