On Wed, Nov 03, 2010 at 12:16:34PM +1000, James Mills wrote: > The problem with this (that we have) is that when/if the dns servers change > (example: unplug the wire, turn on the wireless) this method of resolving > names > isn't able to tell that the dns servers have changed quickly enough. > > On Windows we've solved this by hooking into win32 calls (windns I believe) > and using ctypes. > > We're after something similar on the Mac OS X platform ideally...
socket.* *does* use the Mac native resolution mechanism. What you're running into is that they cache too aggressively; I've noticed this myself especially on 10.6. Executing 'dscacheutil -flushcache' should help; it doesn't require any privileges. You can use the SystemConfiguration framework to watch for DNS changes (State:/Network/Global/DNS). It's wrapped by PyObjC. At least on my 10.5 Mac here there's a demo script in /Developer/Examples/Python/PyObjC/SystemConfiguration/CallbackDemo/callbacks.py which registers for dynamic store notifications. You could also talk to scutil if you wanted; it's also got the ability to register for notifications: % scutil > n.add State:/Network/Global/DNS > n.watch > notification callback (store address = 0x103730). changed key [0] = State:/Network/Global/DNS -- Nicholas Riley <njri...@illinois.edu> _______________________________________________ Pythonmac-SIG maillist - Pythonmac-SIG@python.org http://mail.python.org/mailman/listinfo/pythonmac-sig unsubscribe: http://mail.python.org/mailman/options/Pythonmac-SIG
