[tor-dev] Improving hidden services on mobile phones

Chris Ballinger chris at chatsecure.org
Fri Jul 1 23:43:17 UTC 2016

Glad to see more work on this! For a while I've been toying with the idea
of making a one-button Android XMPP server app that uses Tor HS to solve
the CGNAT reachability issue.

On Fri, Jul 1, 2016 at 4:12 AM, George Kadianakis <desnacked at riseup.net>

> Hey list,
> just for the record, during the past weeks we've been discussing how to
> improve
> hidden services hosted on mobile phones in this here trac ticket:
>        https://trac.torproject.org/projects/tor/ticket/16387
> Discussion has also spilled over ticket #18620.
> The discussion also has a design aspect as some suggested improvements
> would
> require protocol changes, hence I'm informing this list in case some
> people are
> interested in jumping in and participating.
> For example, for some use cases it might make sense to have an HS -> IP
> cell
> INTRODUCE2_ACK that acknowledges the receipt of INTRODUCE2 cells, so that
> the
> IP knows that the intro circuit is active and the HS received the
> introduction
> request before sending out its own INTRODUCE_ACK to the client. That's
> because
> mobile hidden services are unstable and their intro circuits break
> frequently,
> causing reachability issues. See the second part of
> https://trac.torproject.org/projects/tor/ticket/16387#comment:8 for more
> background.
> Have a good day :)
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> tor-dev at lists.torproject.org
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