sftp and ControlPath

[Damien Miller]

On Mon, 10 Aug 2015, Marcin Stolarek wrote:

> Hi guys,
> 
> I've check that when using sftp with -o ControlPath=... the first attempt just
> hangs. Can someone point me to appropriate lines in code where can I check
> whats going on?

Please post a debug log "sftp -vvv ..." - it's essential to figure out
what is going wrong.

> Maybe it's known issue? I'm using  5.3p1.

That's pretty old and there have been multiplexing-related bugs fixed since
then.