BIND 10 #1829: CC Session timeouts / ConfigManager not responding (on OpenBSD)

[BIND 10 Development]

#1829: CC Session timeouts / ConfigManager not responding (on OpenBSD)
-------------------------------------+-------------------------------------
                   Reporter:  jreed  |                 Owner:  jinmei
                       Type:         |                Status:  accepted
  defect                             |             Milestone:
                   Priority:         |  Sprint-20120403
  medium                             |            Resolution:
                  Component:         |             Sensitive:  0
  Unclassified                       |           Sub-Project:  Core
                   Keywords:         |  Estimated Difficulty:  0
            Defect Severity:  N/A    |           Total Hours:  0
Feature Depending on Ticket:         |
        Add Hours to Ticket:  0      |
                  Internal?:  0      |
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Comment (by jinmei):

 trac1829 is ready for review (this time I wrote a test first:-)

 I also made it a bit more reliable by ensuring header part can also be
 sent incrementally if necessary (it's less likely to be necessary
 in practice, but can still happen if, e.g. the other end is too busy).

 Another note, not directly related to this ticket: I checked the same
 scenario with test code written in C.  It didn't happen.  I guess
 it's due to something internal to (OpenBSD's?) Python network/socket
 library.  So we don't have to update the C++ version (at least it's
 not urgent).

 This is proposed changelog:
 {{{
 409.?   [bug]           jinmei
         Python CC library now ensures write operations transmit all given
         data (unless an error happens).  Previously it didn't check the
         size of transmitted data, which could result in partial write on
         some systems (notably on OpenBSD) and subsequently cause system
         hang up or other broken state.  This fix specifically solves start
         up failure on OpenBSD.
         (Trac #1829, git TBD)
 }}}

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Ticket URL: <http://bind10.isc.org/ticket/1829#comment:7>
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