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thoughts

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Joey Hess 2019-01-22 13:25:54 -04:00
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doc/todo/add_sftp_special_remote.mdwn
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@ -3,8 +3,18 @@ pipelined to the network transfer, not requiring the creation of a full
file to disk with gpg before the network transmission, as it happens with
the rsync special remote.
There should be some libraries that can handle the sftp connections and
transfers. I read that even curl has support for that.
That's assuming a sftp library; the sftp command wouldn't support that.
<http://hackage.haskell.org/package/libssh2> has support for sftp, using
the C libssh2. However, it does not integrate with ssh-agent, and
it has two different entry points for authentication with a ssh key
and with a password, and this would leave git-annex to somehow decide which
method to use, and somehow remembering the ssh password or prompting for it
each time. That seems suboptimal.
Driving the `sftp` command is also suboptimal because there would be a trafeoff
between reusing a single sftp session, which would prevent sftp from
displaying progress (it doesn't when stdout is not a tty), and running sftp
repeatedly (though ssh connection caching helps some with that).
> Another reason to build this is that sftp has a `SFTP_FXP_STAT`
> that can get disk free space information. "echo df | sftp user@host"