[tor-bugs] #8462 [Analysis]: Why don't .ir bridge users fall off when Tor gets censored by DPI?

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#8462: Why don't .ir bridge users fall off when Tor gets censored by DPI?
----------------------+-----------------------------------------------------
 Reporter:  arma      |          Owner:     
     Type:  defect    |         Status:  new
 Priority:  normal    |      Milestone:     
Component:  Analysis  |        Version:     
 Keywords:            |         Parent:     
   Points:            |   Actualpoints:     
----------------------+-----------------------------------------------------
 https://metrics.torproject.org/users.html?graph=direct-
 users&start=2012-12-01&end=2013-03-13&country=ir&events=points#direct-
 users sees a pretty clear fall-off. But
 https://metrics.torproject.org/users.html?graph=bridge-
 users&start=2012-12-01&end=2013-03-13&country=ir#bridge-users doesn't show
 any sort of drop-off.

 Similarly, https://metrics.torproject.org/users.html?graph=direct-
 users&start=2012-12-01&end=2013-03-13&country=sy&events=points#direct-
 users sees very clear blocking of Tor users, and I assume it's by DPI also
 (actually I've been assuming it's all SSL), but then the bridge graph
 doesn't look at all like this:
 https://metrics.torproject.org/users.html?graph=bridge-
 users&start=2012-12-01&end=2013-03-13&country=sy#bridge-users

 Is our new bridge user counting algorithm wrong in some way? Or are the
 connections arriving at the bridges, and they're counting them, even if
 the SSL handshake doesn't finish? Or does it finish but just not proceed
 past that?

 At this point I'm avoiding showing the bridge graphs to funders, since
 they make no sense to me.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/8462>
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