how to check computer's state using Qt?

Question

i\'m trying to get computer\'s state in my LAN... thought about using QTcpSocket but it\'s not realy effective since port also should be inserted as:

socket-         


        

Answer 1

One good way is just to verify that they can resolve domain names using QHostInfo. If they can then they likely have internet access:

QHostInfo::lookupHost("www.kde.org", this, SLOT(lookedUp(QHostInfo)));

Of course, you could just try to connect to the host as well, which is even better proof that everything is working correctly. I would do it asynchronously rather than synchronously, but it's truly the best test.