FTP 110 Restart Marker Reply vs 220 Service Ready
FTP 110 (Restart Marker Reply) is a 1xx Positive Preliminary response, while 220 (Service Ready) is a 2xx Positive Completion response. 110 indicates that the server is sending a restart marker reply. The text is exact and not left to interpretation. This marker is used to indicate the point at which a file transfer should be restarted. In contrast, 220 means that service ready for new user. This is the greeting message sent by the FTP server when a client first connects.
Mô tả
The server is sending a restart marker reply. The text is exact and not left to interpretation. This marker is used to indicate the point at which a file transfer should be restarted.
Khi bạn thấy mã này
During a resumed file transfer when the server confirms the restart position in the data stream.
Cách khắc phục
No fix needed — this is a normal response during transfer recovery. If restarts keep failing, verify the marker format matches what your client expects.
Mô tả
Service ready for new user. This is the greeting message sent by the FTP server when a client first connects.
Khi bạn thấy mã này
Immediately upon connecting to an FTP server. This is the welcome banner confirming the server is accepting connections.
Cách khắc phục
No fix needed — the server is ready. Proceed with USER and PASS commands to authenticate.
Sự khác biệt chính
110 is a 1xx Positive Preliminary response, while 220 is a 2xx Positive Completion response.
FTP 110: The server is sending a restart marker reply. The text is exact and not left to interpretation. This marker is used to indicate the point at which a file transfer should be restarted.
FTP 220: Service ready for new user. This is the greeting message sent by the FTP server when a client first connects.
You encounter 110 when during a resumed file transfer when the server confirms the restart position in the data stream.
You encounter 220 when immediately upon connecting to an FTP server. This is the welcome banner confirming the server is accepting connections.
Khi nào dùng cái nào
For 110 (Restart Marker Reply): No fix needed — this is a normal response during transfer recovery. If restarts keep failing, verify the marker format matches what your client expects. For 220 (Service Ready): No fix needed — the server is ready. Proceed with USER and PASS commands to authenticate.