[tor-bugs] #16523 [Tor Browser]: Browser/Chrome Javascript Debugger Broken in Tor Browser (was: Browser/Chrome Javascript Debugger Broken in 5.0a3)

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#16523: Browser/Chrome Javascript Debugger Broken in Tor Browser
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     Reporter:  mikeperry    |      Owner:  gk
         Type:  defect       |     Status:  assigned
     Priority:  normal       |  Milestone:
    Component:  Tor Browser  |    Version:
   Resolution:               |   Keywords:  tbb-5.0a4, TorBrowserTeam201507
Actual Points:               |  Parent ID:
       Points:               |
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Changes (by gk):

 * keywords:  ff38-esr, tbb-5.0a4, TorBrowserTeam201507 => tbb-5.0a4,
     TorBrowserTeam201507


Comment:

 Okay, this was fun to debug. First, this is no ESR 38 thing but visible
 since we switched to ESR 31. The problem is our DNS lookup patch
 preventing the lookup of `localhost`. (Note: you won't see this if you
 switch `network.proxy.socks_remote_dns` nor would it help to change
 `network.proxy.no_proxies_on` if that were the issue as a new profile is
 loaded by the debugger and all the changes you make in your Tor Browser
 apply to the default profile you use)

 A decent fix seems to be hard-coding `127.0.0.1` for `devtools.debugger
 .chrome-debugging-host` in our default preferences. I'll attach a patch
 shortly.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/16523#comment:6>
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