Detect internet connection via VC++

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How to detect internet connection is on /off?
Like sometimes internet connection breaks.I want to detect that.



1>I have tried APIS
InternetGetConnectedState
InternetCheckConnection



but they are not reliable.



InternetQueryOption might work but not given clearly in MSDN.



Apart from this is there any other API or method that would tell me
whether connection is broken or not?
.

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