[tor-bugs] #25596 [Obfuscation/Snowflake]: Configure TURN servers for the proxy and/or client

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#25596: Configure TURN servers for the proxy and/or client
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     Reporter:  arlolra                |      Owner:  (none)
         Type:  defect                 |     Status:  new
     Priority:  Medium                 |  Milestone:
    Component:  Obfuscation/Snowflake  |    Version:
     Severity:  Normal                 |   Keywords:
Actual Points:                         |  Parent ID:
       Points:                         |   Reviewer:
      Sponsor:                         |
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 > This may require spinning up our own TURN servers somewhere.
 >
 >> In most cases, the public ip candidates given by STUN servers are
 sufficient for peers to negotiate a working p2p path. But sometimes, maybe
 14% of the time [1], this isn't enough -- usually due to symmetric NAT /
 lack of port preservation, and a TURN relay is required as a last resort.
 >>
 >> Also, once snowflake proxies & clients are multiplexed, perhaps the
 likelihood that TURN continuous to be absolutely required for every pair
 of peers greatly decreases and we might be fine again. More thought is
 needed here.

 \\ Migrated from https://github.com/keroserene/snowflake/issues/18

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/25596>
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