[tor-bugs] #22848 [Core Tor/Tor]: Increase default Tor buffer sizes on Windows

[Tor Bug Tracker & Wiki]

#22848: Increase default Tor buffer sizes on Windows
------------------------------+----------------------------------
     Reporter:  teor          |      Owner:
         Type:  defect        |     Status:  new
     Priority:  Medium        |  Milestone:  Tor: unspecified
    Component:  Core Tor/Tor  |    Version:
     Severity:  Normal        |   Keywords:  windows, performance
Actual Points:                |  Parent ID:
       Points:  2             |   Reviewer:
      Sponsor:                |
------------------------------+----------------------------------
 In #22798, a Windows relay operator discovered that setting
 {{{
 ConstrainedSockSize 262144
 }}}
 made inbound connections to their relay much faster. (Outbound connections
 are fast regardless.)

 They suspect this is because Tor's networking calls turn Windows buffer
 auto-tuning off.

 We should improve this default, because it will help Windows relays be
 faster. (It shouldn't affect Windows clients, because they only connect
 out.)

 This might be an issue in Tor, or it might be in mingw-64.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/22848>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online