[Development] QTBUG-10481: Adding support for DNS SRV lookups

[Jeremy Lainé]

Some time ago a bug [1] was filed against Qt pointing out the fact there that Qt4 has no API for doing DNS SRV lookups. Such lookups are important for implementing both XMPP and SIP applications, and as such I wrote an implementation for the QXmpp [2] project which has been in use for over a year. I got some initial feedback from Qt developers both on the merge request on gitorious [3] and on IRC, and I adjusted the code accordingly.

I would like to get some further feedback on the API / implementation in order to hopefully get the code merged into Qt, and have submitted it to gerrit for review [4]. Comments are welcome!

Jeremy

[1] https://bugreports.qt.nokia.com/browse/QTBUG-10481
[2] http://code.google.com/p/qxmpp/
[3] http://qt.gitorious.org/qt/qt/merge_requests/887
[4] http://codereview.qt-project.org/7475