FTP 200 Command OK vs 225 Data Connection Open
Both FTP 200 (Command OK) and 225 (Data Connection Open) belong to the 2xx Positive Completion category. 200 indicates that the command has been successfully executed. This is a general acknowledgment that the command was understood and carried out. Meanwhile, 225 means that data connection open; no transfer in progress. The data channel is established and ready but no file transfer has started yet.
Описание
The command has been successfully executed. This is a general acknowledgment that the command was understood and carried out.
Когда вы это видите
After issuing any command that completes successfully, such as TYPE, MODE, or NOOP.
Как исправить
No fix needed — the command succeeded. This is the standard positive response for commands that don't return data.
Описание
Data connection open; no transfer in progress. The data channel is established and ready but no file transfer has started yet.
Когда вы это видите
When the data connection is established but idle, waiting for a transfer command to begin sending or receiving data.
Как исправить
No fix needed — the data connection is ready. Issue a RETR, STOR, or LIST command to start using it.
Ключевые различия
FTP 200: The command has been successfully executed. This is a general acknowledgment that the command was understood and carried out.
FTP 225: Data connection open; no transfer in progress. The data channel is established and ready but no file transfer has started yet.
You encounter 200 when after issuing any command that completes successfully, such as TYPE, MODE, or NOOP.
You encounter 225 when when the data connection is established but idle, waiting for a transfer command to begin sending or receiving data.
Когда что использовать
For 200 (Command OK): No fix needed — the command succeeded. This is the standard positive response for commands that don't return data. For 225 (Data Connection Open): No fix needed — the data connection is ready. Issue a RETR, STOR, or LIST command to start using it.