[tor-bugs] #15482 [Tor]: Don't surprise users with new circuits in the middle of browsing
Tor Bug Tracker & Wiki
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Sat Jul 25 01:06:48 UTC 2015
#15482: Don't surprise users with new circuits in the middle of browsing
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Reporter: | Owner: mikeperry
mikeperry | Status: needs_information
Type: | Milestone: Tor: 0.2.7.x-final
enhancement | Version:
Priority: normal | Keywords: tbb-usability, MikePerry201503,
Component: Tor | tbb-wants, TorBrowserTeam201507R
Resolution: | Parent ID:
Actual Points: |
Points: |
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Comment (by mikeperry):
As it is deployed today, I don't think that this patch should be changing
the total number of circuits significantly. If you are continuously using
a website, you will have *some* circuit open for it. Really the only thing
this patch does is make you tend to use the same circuit for that activity
rather than using a new one.
In aggregate, I guess this *might* cause connections to live longer
between relays, but I doubt it.
What is more likely the culprit is that in Tor Browser 4.5, we also reset
our connection keepalive to match to Firefox default of 2 minutes (up from
20 seconds), since we solved #4100. That would cause more connections to
stay open, since the HTTP connections are now being kept open for longer.
I think this in combination with more users is the real problem.
SPDY and HTTP/2 will make this even worse, since its keep-alive duration
is potentially infinite.
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/15482#comment:27>
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