[tor-bugs] #6156 [TorBrowserButton]: Remove hit of check.tpo on 'new identity' in Tor Browser

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#6156: Remove hit of check.tpo on 'new identity' in Tor Browser
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 Reporter:  phobos               |          Owner:  mikeperry
     Type:  project              |         Status:  new      
 Priority:  major                |      Milestone:           
Component:  TorBrowserButton     |        Version:           
 Keywords:  SponsorJ tbb-bounty  |         Parent:           
   Points:                       |   Actualpoints:           
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Comment(by mcs):

 Some investigation revealed that the update check is being done twice for
 each new window as well upon "New Identity."  I will post a patch that
 does two things:

 1) Suppresses the check when a new window is opened as part of New
 Identity.
 2) Tracks last check time in a preference so we can reduce the ping
 frequency.

 What is a good minimum check interval?  1 hour?  2 hours?  My patch uses
 15 minutes as a placeholder.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/6156#comment:7>
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