[tor-bugs] #15988 [Applications/Tor Browser]: Update Tor Browser design documentation for 6.5

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#15988: Update Tor Browser design documentation for 6.5
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 Reporter:  gk                                   |          Owner:  gk
     Type:  task                                 |         Status:  closed
 Priority:  Medium                               |      Milestone:
Component:  Applications/Tor Browser             |        Version:
 Severity:  Normal                               |     Resolution:  fixed
 Keywords:  tbb-spec, TorBrowserTeam201703R,     |  Actual Points:
  GeorgKoppen201703                              |
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:
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Changes (by gk):

 * status:  needs_review => closed
 * resolution:   => fixed


Comment:

 Replying to [comment:58 mikeperry]:
 > Alright, I think this latest update clarifies and correctly captures the
 distinction in how prefetch, preconnect, and speculative connect are all
 handled?

 Almost. :) The patch you link to is not for `rel="prefetch"` but for
 `rel="preconnect"` as the commit message says. In fact, there is a totally
 distinct `nsPrefetchService` that is responsible for `rel="prefetch"` and
 using the "normal" means of channel creation (see: https://dxr.mozilla.org
 /mozilla-esr45/source/uriloader/prefetch/nsPrefetchService.cpp#90) which
 we took care of before dealing with `rel="preconnect"`. I tried to capture
 that with the following diff:
 {{{
 -the same mechanism as is used for HTTP Keep-alive. For rel="prefetch", we
 -isolate them <ulink
 +the same mechanism as is used for HTTP Keep-alive. This is true for
 rel="prefetch"
 +requests as well. For rel="preconnect", we isolate them <ulink
 }}}
 I think that is okay and I have squashed my resulting branch into
 `bug_15988_v4` (containing updates to the tor browser links and a version
 bump to 6.5.1, too).

 This is at the same time commit 38086eefafcd63e8e3399534211feea55798fcbe
 on `master`.

 If there is something I messed up of left, please file follow-up bugs.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/15988#comment:59>
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