[tor-dev] Reproducibility of Pluggable Transports python.msi

Brandon Wiley brandon at blanu.net
Wed Sep 9 21:20:11 UTC 2015

Thanks David, great info! Last time I checked, I think the C implementation
was also still shipping with something, I think Orbot for Android. Perhaps
this is also for either flash proxy or FTE support, since Python is not the
best option on Android.

>From the graphs it looks like FTE is still in use, but that flash proxy
seems to no longer be used.

If I recall correctly, the core FTE code is actually written in C and is
just using the Python PT implementation with Python-C bindings to the FTE
library. So a port of the FTE PT to the Go PT implementation seems possible.

On Wed, Sep 9, 2015 at 4:50 PM, David Fifield <david at bamsoftware.com> wrote:

> On Wed, Sep 09, 2015 at 03:33:24PM -0400, Brandon Wiley wrote:
> > I am in favor of standardizing on the Go codebase for pluggable
> transports that
> > ship with Tor. This is something we talked about at the last developer
> meeting.
> > The reason I favor this is not for reproducible build reasons, but
> because
> > maintaining four implementations (C, Python, C++, and Go) is confusing
> for PT
> > developers. As far as I know, since the last developer meeting all Tor
> products
> > have been migrating towards shipping the Go PT implementation so that
> they can
> > get obfs4 support. Last I checked, some of Tor products are also
> shipping other
> > PT implementations in order to maintain access to transports not
> available in
> > Go. I imagine that there is some time in the future where there will no
> longer
> > be any bridges available for the older transports and so bundling
> clients for
> > them will no longer be necessary. However, I don't know what the current
> level
> > of use for non-Go transports is. I'd love to know if someone has those
> stats.
> You can see the usage of each transport here:
> https://metrics.torproject.org/userstats-bridge-transport.html?graph=userstats-bridge-transport
> obfs2 - Go
> obfs3 - Go
> obfs4 - Go
> meek - Go
> ScrambleSuit - Go
> flash proxy - Python
> FTE - Python
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