BIND 10 #277: cmdctl needs nicer warning if address already in use

[BIND 10 Development]

#277: cmdctl needs nicer warning if address already in use
---------------------+------------------------------------------------------
 Reporter:  jreed    |       Owner:     
     Type:  defect   |      Status:  new
 Priority:  minor    |   Milestone:     
Component:  cmd-ctl  |    Keywords:     
Sensitive:  0        |  
---------------------+------------------------------------------------------
 Unfriendly output if attempt to run cmdctl and it is already running
 (listening on same port):

 {{{
 Traceback (most recent call last):
   File "/udir/jreed/sunstudio-test/src/bin/cmdctl/b10-cmdctl", line 595,
 in <module>
     run(options.addr, options.port, options.idle_timeout, options.verbose)
   File "/udir/jreed/sunstudio-test/src/bin/cmdctl/b10-cmdctl", line 553,
 in run
     CommandControl, idle_timeout, verbose)
   File "/udir/jreed/sunstudio-test/src/bin/cmdctl/b10-cmdctl", line 444,
 in __init__
     http.server.HTTPServer.__init__(self, server_address,
 RequestHandlerClass)
   File "/udir/jreed/pkg/lib/python3.1/socketserver.py", line 400, in
 __init__
     self.server_bind()
   File "/udir/jreed/pkg/lib/python3.1/http/server.py", line 127, in
 server_bind
     socketserver.TCPServer.server_bind(self)
   File "/udir/jreed/pkg/lib/python3.1/socketserver.py", line 411, in
 server_bind
     self.socket.bind(self.server_address)
 socket.error: [Errno 125] Address already in use
 }}}

 (Note if using bind10, this will loop forever.)

-- 
Ticket URL: <http://bind10.isc.org/ticket/277>
BIND 10 Development <http://bind10.isc.org>
BIND 10 Development