[tor-bugs] #25723 [Circumvention/Snowflake]: Multiplex - one client splits traffic across multiple proxies

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#25723: Multiplex - one client splits traffic across multiple proxies
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 Reporter:  dcf                           |          Owner:  dcf
     Type:  defect                        |         Status:  assigned
 Priority:  Low                           |      Milestone:
Component:  Circumvention/Snowflake       |        Version:
 Severity:  Normal                        |     Resolution:
 Keywords:  anti-censorship-roadmap-2020  |  Actual Points:
Parent ID:  #19001                        |         Points:
 Reviewer:                                |        Sponsor:
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Comment (by cohosh):

 Replying to [comment:8 dcf]:
 > A design sketch for accomplishing this, extending the code changes that
 enabled Turbo Tunnel:
 > I'm thinking of "striping" packets across multiple snowflake proxies
 simultaneously. This could be done in a round-robin fashion or in a more
 sophisticated way (weighted by measured per-proxy bandwidth, for example).
 That way, when a proxy dies, any packets sent to it would be detected as
 lost (unacknowledged) by the KCP layer, and retransmitted over a different
 proxy, much quicker than the 30-second timeout.

 Sounds great. As far as weighting it based on proxy bandwidth or latency,
 can we use something similar to the connection migration you mentioned in
 [https://github.com/net4people/bbs/issues/14#issuecomment-542898991 one of
 your initial TurboTunnel posts]? That way if more packets are coming
 through one snowflake, more packets will be sent out to it? Or is this
 going to choke out the other snowflakes too easily?

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/25723#comment:10>
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