[tor-bugs] #31834 [Circumvention]: Make obfs4 Docker image more usable

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#31834: Make obfs4 Docker image more usable
-------------------------------+-------------------------------
 Reporter:  phw                |          Owner:  phw
     Type:  defect             |         Status:  closed
 Priority:  Medium             |      Milestone:
Component:  Circumvention      |        Version:
 Severity:  Normal             |     Resolution:  fixed
 Keywords:  docker, s30-o24a2  |  Actual Points:  1.1
Parent ID:  #31281             |         Points:  1
 Reviewer:  cohosh             |        Sponsor:  Sponsor30-can
-------------------------------+-------------------------------

Comment (by thymbahutymba):

 Wrong IP in case of dynamic ip which may change.
 I'm not good with bash and so I don't know if something better could be
 proposed but this should solve the problem:

 {{{
 addr=$(grep 'Our IP Address has changed from' "$TOR_LOG" | \
     sed 's/.* \([0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\);
 .*/\1/' | \
     tail -1)

 if [ -z "$addr" ]; then
     addr=$(grep 'Guessed our IP address' "$TOR_LOG" | \
         sed 's/.*
 \([0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\) .*/\1/' | \
         tail -1)
 fi
 }}}

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/31834#comment:25>
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