[tor-bugs] #21886 [Applications/Tor Browser]: Downloading of binary files stalls at 0/0 bytes in Tor Browser based on ESR52 with e10s off

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#21886: Downloading of binary files stalls at 0/0 bytes in Tor Browser based on
ESR52 with e10s off
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 Reporter:  gk                                   |          Owner:  gk
     Type:  defect                               |         Status:
                                                 |  needs_information
 Priority:  High                                 |      Milestone:
Component:  Applications/Tor Browser             |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  tbb-usability, tbb-7.0-must-alpha,   |  Actual Points:
  ff52-esr, TorBrowserTeam201705,                |
  GeorgKoppen201705                              |
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:
                                                 |  Sponsor4
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Comment (by mcs):

 Replying to [comment:21 gk]:
 > Well, that's not the same as in the attachment which is why I was
 asking.

 Ah. I forgot that we posted a patch in an attachment (work in progress)
 and then later we posted a pointer to what we thought was a better patch.
 The main difference between the two patches is where our hook is added
 (`nsExternalHelperAppService::DoContent()` vs.
 `nsExternalAppHandler::OnStartRequest()`). But you probably already knew
 that...

 Do you know if the patch we posted in the attachment fixes this bug on
 Linux? We did not try it because we were hoping to find a fix for #21766
 as well, on all platforms.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/21886#comment:22>
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