[tor-bugs] #19769 [Core Tor/Tor]: Round down DNS TTL to the nearest DEFAULT_DNS_TTL (30 minutes)

[Tor Bug Tracker & Wiki]

#19769: Round down DNS TTL to the nearest DEFAULT_DNS_TTL (30 minutes)
-------------------------------------------------+-------------------------
 Reporter:  teor                                 |          Owner:
     Type:  defect                               |         Status:
                                                 |  needs_information
 Priority:  Very High                            |      Milestone:  Tor:
                                                 |  0.3.0.x-final
Component:  Core Tor/Tor                         |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  029-proposed, dns,                   |  Actual Points:
  TorCoreTeam201609                              |
Parent ID:                                       |         Points:  0.5
 Reviewer:                                       |        Sponsor:
-------------------------------------------------+-------------------------
Changes (by nicoo):

 * cc: nicoo (added)


Comment:

 Regarding MIN_DNS_TTL, Microsoft Windows used (still does?) to have a
 minimum TTL of 15 minutes for it's client-side cache, IIRC.
 Given how prevalent that platform is, I guess a 1 minute MIN_DNS_TTL is
 very unlikely to break things.

 Are there plans to allow more values than {MIN,MAX}_DNS_TTL?

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/19769#comment:14>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online