[tor-bugs] #9582 [EFF-HTTPS Everywhere]: HTTPS-Everywhere 4.0dev10 slows down or prevents https page loads

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#9582: HTTPS-Everywhere 4.0dev10 slows down or prevents https page loads
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 Reporter:  cypherpunks           |          Owner:  pde             
     Type:  defect                |         Status:  new             
 Priority:  normal                |      Milestone:                  
Component:  EFF-HTTPS Everywhere  |        Version:  HTTPS-E 4.0dev10
 Keywords:                        |         Parent:                  
   Points:                        |   Actualpoints:                  
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 Since HTTPS-E 4.0dev10 page load times of https-websites have increased
 significantly. Sometimes https-websites fail to load completely.

 STR:
 1. Install HTTPS-E 4.0dev10 (or upgrade from 4.0dev9).
 2. Restart Firefox.
 3. Try to load several https-sites (with a corresponding HTTPS-E rule
 enabled) in parallel, in different tabs (like dropbox.com; eff.org;
 google.com; microsoft.com; mozilla.org; tweakers.net; twitter.com;
 zotero.org -- typed with or without https-prefix).
 4. If everything seems to work okay, restart Firefox and repeat step 3
 once or twice.

 Actual Results: page loads take often more than 1 minute, they sometimes
 even result in a Firefox connecting error ("The connection was reset").

 Expected Result: page loads should be successful and should not take more
 than a couple of seconds.

 Downgrading to HTTPS-E 4.0dev9 or 3.4.1 resolves the problem for me.
 Disabling all other add-ons doesn't resolve the problem with 4.0dev10.

 Tested against: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; !rv:25.0)
 Gecko/20100101 Firefox/25.0

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/9582>
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