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;
}

bool rede::verificaIP(QString ip)
{
    info.setAddresses();
    QHostInfo info = QHostInfo::fromName(ip);

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

    return false;
}

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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.

[sakya]

fromName retrieve the IP address from name

Looks up the IP address(es) for the given host name.

To get the host name from a IP address you need to use QHostInfo::lookupHost

EDIT: I made a test now and in my network also fromName returns the host name from the IP...

[guidupas]

Yes, its in the QhostInfo documentation, but in my network it does not happen. Can Anyone help my please. Thanks a lot

[anda_skoa]

What is the correct hostname?

Does the hostname correctly resolve to the address?

Cheers,
_