BIND 10 #477: bindctl should exit gracefully after "Boss shutdown"

[BIND 10 Development]

#477: bindctl should exit gracefully after "Boss shutdown"
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           Reporter:  jinmei         |                      Owner:
               Type:  defect         |                     Status:  new
           Priority:  major          |                  Milestone:  feature
          Component:  bind-ctl       |  backlog item
          Sensitive:  0              |                   Keywords:
Add Hours to Ticket:  0              |  Estimated Number of Hours:  0
        Total Hours:  0              |                  Billable?:  1
                                     |                  Internal?:  0
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 Currently its behavior is weird:

 {{{
 % bindctl
 ["login success "] login as root
 > Boss shutdown
 send the command to cmd-ctrld
 received reply: {}
 > quit
 [Errno 61] Connection refused
 Failed to connect with b10-cmdctl module, is it running?
 }}}

 This might be understandable for a programmer, but doesn't make sense at
 all for normal operators.

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Ticket URL: <http://bind10.isc.org/ticket/477>
BIND 10 Development <http://bind10.isc.org>
BIND 10 Development