FTP 125 Data Connection Open vs 200 Command OK
FTP 125 (Data Connection Open) is a 1xx Positive Preliminary response, while 200 (Command 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, 200 means that the command has been successfully executed. This is a general acknowledgment that the command was understood and carried out.
Beschreibung
The data connection is already open and the transfer is beginning. No need to open a new data connection.
Wann Sie es sehen
When the server reuses an existing data connection for a file transfer instead of opening a new one.
Wie man es behebt
No fix needed — the transfer is starting immediately. Your client should begin reading or writing data on the existing connection.
Beschreibung
The command has been successfully executed. This is a general acknowledgment that the command was understood and carried out.
Wann Sie es sehen
After issuing any command that completes successfully, such as TYPE, MODE, or NOOP.
Wie man es behebt
No fix needed — the command succeeded. This is the standard positive response for commands that don't return data.
Wesentliche Unterschiede
125 is a 1xx Positive Preliminary response, while 200 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 200: The command has been successfully executed. This is a general acknowledgment that the command was understood and carried out.
You encounter 125 when when the server reuses an existing data connection for a file transfer instead of opening a new one.
You encounter 200 when after issuing any command that completes successfully, such as TYPE, MODE, or NOOP.
Wann welchen verwenden
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 200 (Command OK): No fix needed — the command succeeded. This is the standard positive response for commands that don't return data.