BIND 10 #1503: dhcp4 and dhcp6 daemons must have option to specify port number

[BIND 10 Development]

#1503: dhcp4 and dhcp6 daemons must have option to specify port number
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                   Reporter:  tomek  |                 Owner:  UnAssigned
                       Type:         |                Status:  reviewing
  defect                             |             Milestone:  Sprint-
                   Priority:         |  DHCP-20120528
  medium                             |            Resolution:
                  Component:  dhcp   |             Sensitive:  0
                   Keywords:         |           Sub-Project:  DHCP
            Defect Severity:         |  Estimated Difficulty:  0
  Medium                             |           Total Hours:  0
Feature Depending on Ticket:         |
        Add Hours to Ticket:  0      |
                  Internal?:  0      |
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Changes (by tomek):

 * owner:  tomek => UnAssigned
 * status:  accepted => reviewing


Comment:

 I do not have much Python experience, so I do not know how to fix one
 particular issue. There is runDhcp4() method that is roughly based on code
 from src/bin/bind10/tests/bind10_test.py. It does exhibit the same
 problem. It manifests itself every time a new process is created, its
 output read and process is killed. There is one file open somewhere.
 Framework complains about this. Example warning:

 src/bin/dhcp4/tests/dhcp4_test.py:131: ResourceWarning: unclosed file
 <_io.FileIO name=9 mode='wb'>

 Implemented changes for b10-dhcp4 only. Once the review is concluded, I
 will implement the same way for b10-dhcp6. Please advise if you prefer
 this to be done within the same ticket or should a separate ticket be
 created for that purpose.

 Please review.

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Ticket URL: <http://bind10.isc.org/ticket/1503#comment:4>
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