FTP 120 Service Ready Soon vs 426 Connection Closed
FTP 120 (Service Ready Soon) is a 1xx Positive Preliminary response, while 426 (Connection Closed) is a 4xx Transient Negative response. 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. In contrast, 426 means that connection closed; transfer aborted. The data connection was closed unexpectedly during a file transfer.
Описание
The service will be ready in a certain number of minutes. The server is not yet available but expects to be shortly.
Когда вы это видите
When connecting to an FTP server that is starting up or temporarily busy with maintenance tasks.
Как исправить
Wait the indicated number of minutes and try connecting again. If the server never becomes ready, contact the server administrator.
Описание
Connection closed; transfer aborted. The data connection was closed unexpectedly during a file transfer.
Когда вы это видите
When a file transfer is interrupted due to a network timeout, client disconnect, or the data connection dropping mid-transfer.
Как исправить
Retry the transfer. If it keeps failing, check network stability, increase timeout values, and verify there are no firewalls killing idle connections.
Ключевые различия
120 is a 1xx Positive Preliminary response, while 426 is a 4xx Transient Negative response.
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 426: Connection closed; transfer aborted. The data connection was closed unexpectedly during 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 426 when when a file transfer is interrupted due to a network timeout, client disconnect, or the data connection dropping mid-transfer.
Когда что использовать
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 426 (Connection Closed): Retry the transfer. If it keeps failing, check network stability, increase timeout values, and verify there are no firewalls killing idle connections.