[tor-bugs] #25183 [Core Tor/Tor]: Implement a way to tell if an IP address is a known relay

["Tor Bug Tracker & Wiki" <blackhole@xxxxxxxxxxxxxx>]

#25183: Implement a way to tell if an IP address is a known relay
-------------------------+-------------------------------------------------
     Reporter:  dgoulet  |      Owner:  nickm
         Type:  defect   |     Status:  assigned
     Priority:  Medium   |  Milestone:  Tor: 0.3.3.x-final
    Component:  Core     |    Version:
  Tor/Tor                |   Keywords:  tor-relay, tor-dos, 029-backport,
     Severity:  Normal   |  031-backport, 032-backport
Actual Points:           |  Parent ID:  #24902
       Points:           |   Reviewer:
      Sponsor:           |
-------------------------+-------------------------------------------------
 For the DoS mitigation subsystem (#24902), we need a way to lookup the
 connection address and *quickly* know if it is a known relay or not. This
 is also needed for #2667 which would prevent Exit to reenter the network.

 nickm has started a branch to have IP addresses with bloom filter:
 `address_set_029`.

 Next step is to use that and bridge it with the nodelist so we can lookup
 an IP address and learn if it is known or not (not get the `node_t` back,
 that would require more work and probably lose in performance).

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/25183>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online

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