FTP 120 Service Ready Soon vs 150 File Status OK
Both FTP 120 (Service Ready Soon) and 150 (File Status OK) belong to the 1xx Positive Preliminary category. 120 indicates that the service will be ready in a certain number of minutes. The server is not yet available but expects to be shortly. Meanwhile, 150 means that the file status is okay and the server is about to open the data connection for the transfer. This is the normal precursor to a file transfer.
คำอธิบาย
The service will be ready in a certain number of minutes. The server is not yet available but expects to be shortly.
เมื่อคุณพบเห็น
When connecting to an FTP server that is starting up or temporarily busy with maintenance tasks.
วิธีแก้ไข
Wait the indicated number of minutes and try connecting again. If the server never becomes ready, contact the server administrator.
คำอธิบาย
The file status is okay and the server is about to open the data connection for the transfer. This is the normal precursor to a file transfer.
เมื่อคุณพบเห็น
Right before a file download or upload begins, confirming the file is accessible and the data channel is being opened.
วิธีแก้ไข
No fix needed — this means the transfer is about to start. If the transfer stalls after this reply, check firewall rules blocking the data connection.
ความแตกต่างหลัก
FTP 120: The service will be ready in a certain number of minutes. The server is not yet available but expects to be shortly.
FTP 150: The file status is okay and the server is about to open the data connection for the transfer. This is the normal precursor to a file transfer.
You encounter 120 when when connecting to an FTP server that is starting up or temporarily busy with maintenance tasks.
You encounter 150 when right before a file download or upload begins, confirming the file is accessible and the data channel is being opened.
ควรใช้อันไหนเมื่อไร
For 120 (Service Ready Soon): Wait the indicated number of minutes and try connecting again. If the server never becomes ready, contact the server administrator. For 150 (File Status OK): No fix needed — this means the transfer is about to start. If the transfer stalls after this reply, check firewall rules blocking the data connection.