[tor-dev] Revisiting prop224 time periods and HS descriptor upload/downloads

Tim Wilson-Brown - teor teor2345 at gmail.com
Thu Apr 14 15:21:36 UTC 2016

> On 15 Apr 2016, at 01:18, David Goulet <dgoulet at ev0ke.net> wrote:
>> Here are some things left to be done:
>> - Specify *when* hidden services upload descriptors. Do they do it hourly, or
>>  only when a change has happened. Both approaches leak information to the
>>  HSDir (the former leaks uptime, the latter leaks intro point changes).
> I'm more comfortable right now with the HS uploading every RendPostPeriod
> (default: 1 hour). Even if the descriptor content doesn't change, it should
> increment the revision-counter.
> I'm more and more convinced that making RendPostPeriod _not_ configurable is
> also something we should do and thus allowing us to have the HSDir use that
> value instead (maybe).

Alec and others have talked about posting descriptors more frequently to enable rapid onion service fail-over.
Perhaps we should have a default, and then allow the period to be changed (like in the current code).


Tim Wilson-Brown (teor)

teor2345 at gmail dot com
PGP 968F094B

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