private void CreateInterfaceChangedObserver()
{
try
{
unsafe
{
iObserver = InterfaceChanged;
iCallout = Marshal.GetFunctionPointerForDelegate(iObserver);
iContext = new SCDynamicStoreContext();
iStore = SCDynamicStoreCreate(IntPtr.Zero, kAddIPAddressListChangeCallbackSCF, iCallout, iContext);
if (iStore == IntPtr.Zero)
{
throw new ApplicationException("Failed to invoke SCDynamicStoreCreate");
}
iPattern = SCDynamicStoreKeyCreateNetworkServiceEntity(IntPtr.Zero, kSCDynamicStoreDomainState, kSCCompAnyRegex, kSCEntNetIPv4);
if (iPattern == IntPtr.Zero)
{
throw new ApplicationException("Failed to invoke SCDynamicStoreKeyCreateNetworkServiceEntity");
}
iPatternList = CFArrayCreate(IntPtr.Zero, new IntPtr[1] {
iPattern
}, 1, IntPtr.Zero);
if (iPatternList == IntPtr.Zero)
{
throw new ApplicationException("Failed to invoke CFArrayCreate");
}
bool setNotificationKeys = SCDynamicStoreSetNotificationKeys(iStore, IntPtr.Zero, iPatternList);
if (!setNotificationKeys)
{
throw new ApplicationException("Failed to invoke SCDynamicStoreSetNotificationKeys");
}
iRunLoopSource = SCDynamicStoreCreateRunLoopSource(IntPtr.Zero, iStore, 0);
if (iRunLoopSource == IntPtr.Zero)
{
throw new ApplicationException("Failed to invoke SCDynamicStoreCreateRunLoopSource");
}
iRunLoop = CFRunLoopGetMain();
if (iRunLoop == IntPtr.Zero)
{
throw new ApplicationException("Failed to invoke CFRunLoopGetMain");
}
IntPtr bundle = CFBundleGetBundleWithIdentifier(kBundleIdentifier);
IntPtr *stringRef = (IntPtr *)CFBundleGetDataPointerForName(bundle, kCFRunLoopCommonModes);
iModeString = *stringRef;
CFRunLoopAddSource(iRunLoop, iRunLoopSource, iModeString);
CFRelease(iPattern);
CFRelease(iPatternList);
}
}
catch (Exception ex)
{
string message = "Error creating NetworkChangeWatcher: " + ex;
UserLog.WriteLine(message);
Trace.WriteLine(Trace.kCore, message);
if (iPattern != IntPtr.Zero)
{
CFRelease(iPattern);
}
if (iPatternList != IntPtr.Zero)
{
CFRelease(iPatternList);
}
if (iStore != IntPtr.Zero)
{
CFRelease(iStore);
}
if (iRunLoopSource != IntPtr.Zero)
{
CFRelease(iRunLoopSource);
}
}
}
private static extern IntPtr SCDynamicStoreCreate(IntPtr allocator, IntPtr name, IntPtr callout, SCDynamicStoreContext context);
