[tor-bugs] #16682 [Core Tor/Tor]: Deploy TCP Fast Open at exits (and maybe inter-node?)

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#16682: Deploy TCP Fast Open at exits (and maybe inter-node?)
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 Reporter:  mikeperry                            |          Owner:  (none)
     Type:  enhancement                          |         Status:  new
 Priority:  Medium                               |      Milestone:  Tor:
                                                 |  unspecified
Component:  Core Tor/Tor                         |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  performance tor-relay exit needs-    |  Actual Points:
  analysis term-project                          |
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:
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Comment (by cypherpunks):

 Replying to [comment:2 mikeperry]:
 > Yawning and I discussed briefly on IRC that we *might* be able to get
 away with doing TFO just for exit traffic destined to port 443, since TLS
 should be fine with issues in section 6, and sketch non-TLS 443 servers
 shouldn't be advertising/accepting TFO.
 >
 > Reopening while we ponder that case.

 hello, i suggest split this work to get it done quicker.

 1. while concerning about privacy, this decisions may need review first.
 Why not open a child ticket for this maybe?

 2. implementation in inter-relay and client=>guard connection seems to be
 without any possible privacy impacts yet. why don't just enable TFO(TCP
 Fast Open) in alpha testing branch for this TLS only connections?

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/16682#comment:14>
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