Implementing sftp server-side timeout

[Damien Miller]

On Thu, 20 Oct 2022, Peter Stuge wrote:

> Finally, have you tested how this works with internal-sftp?
> 
> I guess many large scale servers don't use internal-sftp because of
> logging requirements as discussed in an older thread but I bet that
> internal-sftp is desirable especially when scaling up so make sure
> to not neglect it. Thanks.

I didn't catch the other thread, but internal-sftp logging should work
just fine. 

e.g. with

Subsystem	sftp	internal-sftp -l verbose -f daemon

I see:

Oct 21 16:46:22 djm internal-sftp[82167]: session opened for local user djm from [10.130.80.1]
Oct 21 16:46:22 djm internal-sftp[82167]: received client version 3
Oct 21 16:46:22 djm internal-sftp[82167]: realpath "."
Oct 21 16:47:59 djm internal-sftp[82167]: session closed for local user djm from [10.130.80.1]

-d