[tor-bugs] #15125 [Pluggable transport]: meek-client-wrapper does not respond to handlers properly

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#15125: meek-client-wrapper does not respond to handlers properly
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 Reporter:  infinity0            |          Owner:  asn
     Type:  defect               |         Status:  new
 Priority:  normal               |      Milestone:
Component:  Pluggable transport  |        Version:
 Keywords:                       |  Actual Points:
Parent ID:                       |         Points:
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 When testing meek-client-wrapper, I noticed two things:

 - it does not respond to SIGINT or SIGKILL. also, the signal handling code
 is different from meek-client. perhaps we should move it to goptlib?
 - it uses sigkill to kill its children, not giving them a chance to clean
 up. Yes, this is awkward on windows but we can at least do something nicer
 on posix systems.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/15125>
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