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Re: [tor-bugs] #22618 [Applications/Tor Browser]: Downloading pdf file via file:/// is stalling if the external helper dialog is enabled

#22618: Downloading pdf file via file:/// is stalling if the external helper dialog
is enabled
-------------------------------------------------+-------------------------
 Reporter:  gk                                   |          Owner:  tbb-
                                                 |  team
     Type:  defect                               |         Status:
                                                 |  needs_review
 Priority:  Medium                               |      Milestone:
Component:  Applications/Tor Browser             |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  tbb-7.0-issues, tbb-regression,      |  Actual Points:
  tbb-e10s, TorBrowserTeam201708R                |
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:
-------------------------------------------------+-------------------------

Comment (by mcs):

 Replying to [comment:9 arthuredelstein]:
 > One question I have: it looks as though files are downloaded while the
 first dialog is displayed. That doesn't necessarily seem to be a problem,
 but are there temporary files where the file is being stored?

 Yes. Temporary files (.part) are created during the download and they are
 placed in the configured downloads directory. See the
 nsExternalAppHandler::SetUpTempFile() function here:
 https://dxr.mozilla.org/mozilla-
 esr52/source/uriloader/exthandler/nsExternalHelperAppService.cpp#1400

 We talked about this a little at one of our Monday meetings and Kathy and
 I had the impression that it was okay for the download to proceed as long
 as everything gets cleaned up if the user aborts the download. The
 difference in behavior between Tor Browser 6.5 and 7.x with this patch is
 that in 6.5 the Tor download warning prompt effectively paused the
 download because a modal dialog was presented.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/22618#comment:10>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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