[tbb-bugs] #22471 [Applications/Tor Browser]: Downloading pdf files with the download button in the pdf viewer is stalling

[Tor Bug Tracker & Wiki]

#22471: Downloading pdf files with the download button in the pdf viewer is
stalling
-------------------------------------+-------------------------------------
     Reporter:  gk                   |      Owner:  tbb-team
         Type:  defect               |     Status:  new
     Priority:  High                 |  Milestone:
    Component:  Applications/Tor     |    Version:
  Browser                            |   Keywords:  tbb-7.0-must,
     Severity:  Normal               |  TorBrowserTeam201706
Actual Points:                       |  Parent ID:
       Points:                       |   Reviewer:
      Sponsor:                       |
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 This is one of the remaining issues of #21766: our external helper app
 dialog blocker leads to a stalled download using the download button on
 the pdf viewer. Right-clicking and using Save as... is still working,
 though.

 mcs wrote in #21766:
 {{{
 We have not found a fix for the pdfjs download problem, but I think the
 reason our earlier fix is ineffective is because a blobURI is used for the
 download, and therefore the channel associated with the download cannot be
 suspended (suspend and resume are only implemented for some channel
 types). So in this case the suspend/resume solution won't work.
 }}}

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/22471>
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