rsync & SSL 'for real'

Carson Gaspar carson at
Wed Apr 18 20:21:28 GMT 2007

Lawrence D. Dunn wrote:
> Colleagues,
>   If you do pursue SSL functionality directly in rsync,
>   please be sure to take a look at Chris Rapier's work
>   to "fix" standard ssh implementations, at:
>   Turns out "-e ssh" using most libraries puts a fixed-window-size 
> ssh-windowing
>   behavior on top of TCP - so for large bandwidth*delay product paths,
>   even if you use large TCP buffers (which Wayne added for such paths),
>   an "un-fixed" SSL library can clobber overall performance/throughput,
>   even for a perfectly clean (no  errors/loss) path.



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