> On 30 Sep 2015, at 12:01, Nick Mathewson <ni...@torproject.org> wrote: > > [This isn't done yet, but I've shown it to enough people that I should > share it with the list.] > > 1. Introduction and background > > 1.1. Motivation > > Frequently, we find that very old versions of Tor should no longer be > supported on the network. To remove relays is easy enough: we > simply update the directory authorities to stop listing them. > > But to disable clients is harder. We can do as we did with v1 > directories in Tor 0.2.0.5-alpha, and make them know about no relays > at all. > > ... > 1.2. History > > Early versions of Tor checked the recommended-versions field in the > directory to see whether they should keep running. If they didn't > recognize
their own version, they would stop (what?). > ... > 3.2. Disabling versions prior to 0.2.4.11-alpha. > > Starting in version Tor 0.2.4.11-alpha, we implemented proposal 214. > This proposal added a new link protocol, version 4. Earlier version versions > of Tor never support it; newer versions of Tor always advertise their > support for it. > > We could treat the presence of any link protocol of version 4 or > later as indicating the presence of 0.2.4.11-alpha. Upon receiving a version 3 or earlier as indicating the presence of a version less than 0.2.4.11-alpha. > connection from such a version, we could throttle the bytes we give > it, drop its circuits, or stop reading. > > [TODO: which?] Tim Tim Wilson-Brown (teor) teor2345 at gmail dot com PGP 968F094B teor at blah dot im OTR CAD08081 9755866D 89E2A06F E3558B7F B5A9D14F
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