FTP 125 Data Connection Open vs 215 System Type
FTP 125 (Data Connection Open) is a 1xx Positive Preliminary response, while 215 (System Type) 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, 215 means 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.
Descripción
The data connection is already open and the transfer is beginning. No need to open a new data connection.
Cuándo lo verás
When the server reuses an existing data connection for a file transfer instead of opening a new one.
Cómo solucionarlo
No fix needed — the transfer is starting immediately. Your client should begin reading or writing data on the existing connection.
Descripción
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.
Cuándo lo verás
After issuing the SYST command. The server reports its operating system type, commonly 'UNIX Type: L8' or 'Windows_NT'.
Cómo solucionarlo
No fix needed — use this information to adjust path separators and line endings for the server's OS type.
Diferencias clave
125 is a 1xx Positive Preliminary response, while 215 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 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.
You encounter 125 when when the server reuses an existing data connection for a file transfer instead of opening a new one.
You encounter 215 when after issuing the SYST command. The server reports its operating system type, commonly 'UNIX Type: L8' or 'Windows_NT'.
Cuándo usar cada uno
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 215 (System Type): No fix needed — use this information to adjust path separators and line endings for the server's OS type.