[tor-bugs] #31789 [Core Tor/Tor]: Make networking usage in circuit padding more abstract

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#31789: Make networking usage in circuit padding more abstract
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     Reporter:           |      Owner:  (none)
  mikeperry              |
         Type:           |     Status:  new
  enhancement            |
     Priority:  Medium   |  Milestone:
    Component:  Core     |    Version:
  Tor/Tor                |   Keywords:  circpad-researchers-maybe-want,
     Severity:  Normal   |  wtf-pad
Actual Points:           |  Parent ID:  #31788
       Points:           |   Reviewer:
      Sponsor:           |
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 When we send packets in the framework, we call into relay.c and do some
 cell parsing setup. If we moved this code into a separate c file, it will
 be easier to replace it with simulated calls for a trace simulator.

 This is not strictly required, but it will allow us to more easily update
 both the simulator and the in-tor implementation without conflicts.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/31789>
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