BIND 10 #1546: resolver not listening

[BIND 10 Development]

#1546: resolver not listening
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                   Reporter:  jreed     |                 Owner:  jinmei
                       Type:  defect    |                Status:  accepted
                   Priority:  major     |             Milestone:  New Tasks
                  Component:  resolver  |            Resolution:
                   Keywords:            |             Sensitive:  0
            Defect Severity:  High      |           Sub-Project:  DNS
Feature Depending on Ticket:            |  Estimated Difficulty:  0
        Add Hours to Ticket:  0         |           Total Hours:  0
                  Internal?:  0         |
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Comment (by jinmei):

 The fix is available in trac1546.  Please review.

 What happened is that when the requestor sent an initial request
 `ModuleCCSession` had already started listening to commands/config
 updates, so the response from the boss is stolen by `ModuleCCSession`
 and resulted in "timeout".

 A similar problem happened for auth and we developed a workaround to
 avoid this problem (that's why auth didn't have the problem for
 listen_on).  I applied the same fix to the resolver.

 Unfortunately it's quite difficult to provide a unit test to reproduce
 this problem, so at the moment I only added the fix (I confirmed it
 by running it).

 I don't plan to create a changelog entry for this fix.

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Ticket URL: <http://bind10.isc.org/ticket/1546#comment:3>
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