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Re: [tor-bugs] #8470 [Firefox Patch Issues]: Request randomization a lot less random in FF17
#8470: Request randomization a lot less random in FF17
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Reporter: mikeperry | Owner: mikeperry
Type: defect | Status: new
Priority: critical | Milestone:
Component: Firefox Patch Issues | Version:
Keywords: tbb-rebase-regression, MikePerry201304 | Parent:
Points: | Actualpoints:
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Comment(by mikeperry):
Ok, I've been testing that patch with a debug build + logs for a bit. I've
discovered that quite a few of the pipeline connections are hitting the
hardcoded timeout of 1.5 seconds and getting rescheduled. This might not
be too bad, because it should just create more opportunities for
randomization, *except* that the code also marks connections that timeout
as unsuitable for future pipelining. Once the connection limit is hit,
pipelining then stops entirely.
So in effect, for large websites, pipelinining is almost completely
disabled for Tor by this timeout. It looks like this specific
pref+variable were a new addition to the FF17 code during the pipelining
rewrite, but there may have been an analog to this timer in FF10 and
before...
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/8470#comment:6>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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