How to close SftpChannel?

[alanhe421]

For example, here I use a connection to obtain an SFTP channel. When I'm in the middle of an upload and I want to cancel it without closing the SSH connection, my understanding is that I can simply close this channel, right?

I see that the close method of the channel has two parameters during debugging, but I'm not sure what should be passed specifically.

[mscdex]

sftp.end() should close the channel.

[alanhe421]

Thank you, I understand. So, sftp.end does not close the SSH connection; it only closes the specific channel.

I would like to ask, based on my previous description, if closing the channel and reestablishing it is a recommended approach for implementing upload cancellation. I'm not sure if FileZilla or other applications use this approach.

The fundamental question is whether each file transfer is conducted through a separate channel. If each file transfer does indeed use a separate channel and closing the channel after a file is completed is the standard practice, then it is reasonable to cancel the transfer by closing the channel. However, if this is not the case and multiple file transfers share the same channel, then there may be an issue with your approach.

[mscdex]

Each call to ssh.sftp() is a separate channel. If you are performing multiple transfers on the same SFTP channel, then simply only stop the transfer you want. If you're using sftp.fast*(), you either need to create your own solution and/or keep an eye on this feature request. Otherwise if you're using a file stream, you simply just need to destroy it.