[tor-bugs] #9659 [Firefox Patch Issues]: high cpu usage from tbb-firefox.exe on web requests

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#9659: high cpu usage from tbb-firefox.exe on web requests
-------------------------------------+-------------------------------------
     Reporter:  cypherpunks          |      Owner:  mikeperry
         Type:  defect               |     Status:  new
     Priority:  normal               |  Milestone:  TorBrowserBundle
    Component:  Firefox Patch        |  2.3.x-stable
  Issues                             |    Version:  Tor: 0.2.3.25
   Resolution:                       |   Keywords:  hang unresponsive
Actual Points:                       |  throttle
       Points:                       |  Parent ID:
-------------------------------------+-------------------------------------

Comment (by cypherpunks):

 Simple way to reproduce it, to use socks5 proxy server that behaves like
 normal socks5 proxy but never answer 'success' like it does Tor while
 waits circuit, and attaching stream.

 Used simple socks5 proxy that written in Python, found in code google
 projects (https://code.google.com/p/python-socks5/). Simplified even more
 and modified it so it never connects to anything. Code license marked as
 GNU GPL v3, so I hope nothing violates with it. If any troubles then
 delete it.

 It binds on 127.0.0.1:1080 and behave like socks5 proxy. You need to
 change proxy settings in Torbutton's preferences for test.

 Attaching modified code.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/9659#comment:3>
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