[tbb-bugs] #22585 [Applications/Quality Assurance and Testing]: FPCentral is not working with Tor Browser 7.0

Tor Bug Tracker & Wiki blackhole at torproject.org
Mon Jun 12 17:29:01 UTC 2017

#22585: FPCentral is not working with Tor Browser 7.0
     Reporter:  boklm                            |      Owner:  boklm
         Type:  defect                           |     Status:  new
     Priority:  Medium                           |  Milestone:
    Component:  Applications/Quality Assurance   |    Version:
  and Testing                                    |   Keywords:
     Severity:  Normal                           |  TorBrowserTeam201706
Actual Points:                                   |  Parent ID:  #18343
       Points:                                   |   Reviewer:
      Sponsor:                                   |
 Running the javascript tests on https://fpcentral.irisa.fr/fp to get the
 fingerprint is not working with Tor Browser 7.0.

 The web console shows an error `TypeError: undefined is not a constructor`
 pointing to this line:
        var audioCtx = new (window.AudioContext ||

 The test in `fingerprint/attributes/tor/audioContext.js` needs to be
 updated to handle the case where `window.AudioContext` is undefined.

Ticket URL: <https://trac.torproject.org/projects/tor/ticket/22585>
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