[Author Prev][Author Next][Thread Prev][Thread Next][Author Index][Thread Index]

Re: [tor-bugs] #16052 [Tor]: Hidden service socket exhaustion by opening many connections

#16052: Hidden service socket exhaustion by opening many connections
------------------------+------------------------------------------
     Reporter:  asn     |      Owner:
         Type:  defect  |     Status:  new
     Priority:  normal  |  Milestone:  Tor: 0.2.7.x-final
    Component:  Tor     |    Version:
   Resolution:          |   Keywords:  tor-hs dos SponsorR SponsorU
Actual Points:          |  Parent ID:
       Points:          |
------------------------+------------------------------------------

Comment (by yawning):

 First pass at implementing "a" (entirely untested):
 https://github.com/Yawning/tor/compare/bug16052a

 Things that remain to be done:

  * Refactor the code that touches `origin_circuit_t.p_streams` to use
 `TOR_LIST_*` so it's easier to audit the stream counter code that got
 added (per discussion with nickm).
  * Test it.
  * Add a changes file.
  * Update the man page.

 The code does the simplest thing that will not break in conjunction with
 browsers using multiple connections to minimize load latency (the "6"
 figure per mike), taking into account that circuit lifespan can be quite
 long now with the #15482 sketch patch being shipped in Tor Browser.

 More complicated behavior is indeed possible, but people who want such
 things are free to figure out what exactly Firefox does wrt to keeping
 connections around/opening new ones/etc, so they can implement the
 different behavior themselves.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/16052#comment:11>
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