[Qt-interest] Check network connection using QT classes.

[Tolik Piskov]

Don't know if this is the mailing list I should send my question to, but
anyways. What I'm trying to do is to check whether my machine has working
internet connection. I tried to use QNetworkAccessManager to send GET
request to some server and expect finished() signal if everything is
ok. When I block my program with firewall -- everything is ok. But if I take
network cable out -- my program crashes. I think it is due to bind to an
nonexistent address.

Maybe there's better ways to check network connection?
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