[tor-bugs] #24299 [Core Tor/Tor]: Allow onion services to distinguish clients from each other

[Tor Bug Tracker & Wiki]

#24299: Allow onion services to distinguish clients from each other
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     Reporter:  asn           |      Owner:  (none)
         Type:  defect        |     Status:  new
     Priority:  Medium        |  Milestone:  Tor: 0.3.3.x-final
    Component:  Core Tor/Tor  |    Version:
     Severity:  Normal        |   Keywords:  tor-hs, prop224, tor-dos
Actual Points:                |  Parent ID:  #24298
       Points:                |   Reviewer:
      Sponsor:                |
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 We should provide onion services with the option to distinguish their
 anonymous users from each other, and also to handle those clients in a
 clinical way to do diagnostics, rate-limiting, abusive client blocking,
 etc.

 One proposed way to do so comes from an old tor-dev thread which suggests
 we assign a virtual IP to each client based on the circuit ID:
 https://lists.torproject.org/pipermail/tor-dev/2014-March/006610.html

 I2P seems to have implemented a derivative of this idea. I wonder how it
 works for them:
 https://github.com/i2p/i2p.i2p/blob/920b14212fa80a3a0e92d6e919fdae7e39ed22d5/apps/i2ptunnel/java/src/net/i2p/i2ptunnel/I2PTunnelServer.java#L739

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/24299>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online