Using QHostInfo to get host name from an IP

[guidupas]

Hi all!

I am trying to get the host name from a IP inside my LAN using QHostInfo.

This is my code:
@bool rede::verificaIP(QString ip)
{
info.setAddresses();
QHostInfo info = QHostInfo::fromName(ip);

qDebug() << "IP:" << info.hostName() << info.addresses();

return false;

}@

The ip parameter is 192.168.1.91

But the result is:
IP: "192.168.1.91" (QHostAddress("192.168.1.91") )

The function does not returns the host name

Can anyone help me?

Thanks a lot.

[zorn]

Hi,
you can try to see with wireshark what is the response to your reverse DNS query

[guidupas]

Sorry, but how can I do that?

[SGaist]

Hi and welcome to devnet,

Shouldn't you rather use "lookupHost":http://qt-project.org/doc/qt-5/qhostinfo.html#lookupHost ?

[zorn]

Are you sure that your ip resolve to an host name ?
On windows you can try ping -a 192.168.1.91

[guidupas]

You are right, my network is not resolving names. Sorry about that.