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Firebrick feature request? Testing whether internet access is up

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Weaver:
Reasons for asking the Firebrick are firstly because it knows more: it is an ‘insider’, and secondly if I try and just do everything myself then the crappy library routines I have will simply hang all over the place semi-predictably when things are a bit or a lot broken.

aesmith:

--- Quote from: IanG on June 16, 2019, 07:37:08 PM ---The function that I had in mind was Microsoft's InternetGetConnectedState(), a wonderful name that only partly lived up to its promise.

--- End quote ---
If that was the function introduced with Vista it was fantastically flakey, often for no apparent reason flagging an interface as "local only" and keeping it in that state even while from the command prompt you could happily ping Internet hosts by name.  I was never able to find an explanation of what test it carried out to reach it's conclusion, and the only solution that I found was to disable the Network Location Awareness service.

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