[Author Prev][Author Next][Thread Prev][Thread Next][Author Index][Thread Index]
[tor-bugs] #14165 [Tor]: Tor needs a protocol versioning scheme
#14165: Tor needs a protocol versioning scheme
-------------------------+---------------------
Reporter: TvdW | Owner:
Type: enhancement | Status: new
Priority: normal | Milestone:
Component: Tor | Version:
Keywords: tor-spec | Actual Points:
Parent ID: | Points:
-------------------------+---------------------
To support alternate OR implementations, it would be nice if it wasn't
required for relays to announce themselves as "Tor <version> on <os>". The
current dir-spec.txt mentions :
{{{
The version of the Tor protocol that this relay is running. If
the value begins with "Tor" SP, the rest of the string is a Tor
version number, and the protocol is "The Tor protocol as supported
by the given version of Tor." Otherwise, if the value begins with
some other string, Tor has upgraded to a more sophisticated
protocol versioning system, and the protocol is "a version of the
Tor protocol more recent than any we recognize."
}}}
This means that any implementation not listing "Tor .*" is required to
implement the entire spec plus any feature that may ever be in the spec.
Until we invent time travel this will be difficult to achieve.
The alternative is that any alternate Tor implementation needs to announce
itself as "Tor".
Suggestions mentioned in #tor-dev :
* Numerical protocol versions. Basically what we have now but without the
"Tor" prefix, and published separately in the consensus. They're nice and
compact but require all alternative implementations to implement the exact
same set of features. Also doesn't deal with forward compatibility well if
features are dropped in newer versions.
* Capability lists. arma mentioned that this is already there as a hack
(V2Dir flag, for example). It also takes a lot of space in the consensus,
and they may grow a lot over time.
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/14165>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
_______________________________________________
tor-bugs mailing list
tor-bugs@xxxxxxxxxxxxxxxxxxxx
https://lists.torproject.org/cgi-bin/mailman/listinfo/tor-bugs