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A problem with big delays between 2 SCDynamicStore state events
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A problem with big delays between 2 SCDynamicStore state events


  • Subject: A problem with big delays between 2 SCDynamicStore state events
  • From: Stéphane Sudre <email@hidden>
  • Date: Wed, 12 Sep 2018 15:58:46 +0000
  • Thread-topic: A problem with big delays between 2 SCDynamicStore state events

I have a SCDynamicStore observer that is notified when the  “state” of the
kSCEntNetIPv4 and kSCEntNetIPv6 entities change.

I’m doing some tests by turning the Wi-Fi Off and On through the Wi-Fi menu
extra.

Here’s the “problem” I’m seeing:

- The Wi-Fi is turned off.
- I turn it on.

On OS X 10.8.5:

- I get a first notification after which it’s not yet possible to retrieve the
network configuration (IP address, MAC Address, etc.)
- About 1 second later, I get a second notification and I’m able to retrieve
the network configuration.

On an unrelease macOS version:

- I get a first notification after which it’s not yet possible to retrieve the
network configuration (IP address, MAC Address, etc.)
- About 90 seconds later, I get a second notification and I’m able to retrieve
the network configuration.


So a delay which is 1 second on OS X 10.8.5 has now become a 90-second delay on
this unrelease macOS version (and it could be that this is also the case with
earlier releases of OS X/macOS but I haven’t had the opportunity to check yet).


Question:

Has there been some changes (other than a bug/regression) that could explain
the huge increase and that this is the expected behavior?



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