[tbb-bugs] #29252 [Applications/Tor Browser]: Don't disable TLS 1.3 for update checks

[Tor Bug Tracker & Wiki]

#29252: Don't disable TLS 1.3 for update checks
------------------------------------------+----------------------
     Reporter:  gk                        |      Owner:  tbb-team
         Type:  defect                    |     Status:  new
     Priority:  Medium                    |  Milestone:
    Component:  Applications/Tor Browser  |    Version:
     Severity:  Normal                    |   Keywords:
Actual Points:                            |  Parent ID:
       Points:                            |   Reviewer:
      Sponsor:                            |
------------------------------------------+----------------------
 When constructing the request for the `update.xml` file TLS 1.3 is
 disabled:
 {{{
       // Disable cutting edge features, like TLS 1.3, where middleboxes
 might brick us
 this._request.channel.QueryInterface(Ci.nsIHttpChannelInternal).beConservative
 = true;
 }}}
 The tests on the Internet maintain that the machines behind aus1 do not
 support TLS 1.3 (weasel tells me our machines behind aus1 *do* support TLS
 1.3). Be that as it may, we should offer TLS 1.3. (This got mentioned as
 part of BLRG-PT-18-007 in the Firefox updater audit
 (https://bugzilla.mozilla.org/attachment.cgi?id=8985197) as well).

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/29252>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online