[tbb-bugs] #29430 [Applications/Tor Browser]: Use uTLS for meek TLS camouflage in Tor Browser

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#29430: Use uTLS for meek TLS camouflage in Tor Browser
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 Reporter:  dcf                       |          Owner:  tbb-team
     Type:  enhancement               |         Status:  new
 Priority:  Medium                    |      Milestone:
Component:  Applications/Tor Browser  |        Version:
 Severity:  Normal                    |     Resolution:
 Keywords:  meek utls                 |  Actual Points:
Parent ID:                            |         Points:
 Reviewer:                            |        Sponsor:
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Comment (by dcf):

 Heads up, upstream utls fixed a distinguishability bug recently. A second
 ClientHello (which the client sends after the server sends a
 HelloRetryRequest) was not being camouflaged correctly. I confirmed that
 the bug existed with HelloChrome_70 against ajax.aspnetcdn.com, but I
 haven't personally tested yet that the fix actually fixes it. When I do,
 I'll update the branch.
 https://github.com/refraction-networking/utls/pull/21

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/29430#comment:7>
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