[Solved] Get hostname & MAC address from IP Adreess

[MohammadReza]

Hello friends.

In my application I want to get hostname & MAC address from IP address (in my LAN).
I used these code for find hostname, but nothing appeared in lineedit.

@
QHostInfo HI;
QHostAddress HA("192.168.1.1");
QList<QHostAddress> List;
List.append(HA);
HI.setAddresses(List);
ui->ledHostname->setText(HI.hostName());
@

Thanks a lot.
Ya Ali.

[hskoglund]

Hi, you need also to lookup 192.168.1.1. for example:
HI = QHostInfo::fromName("192.168.1.1");

[MohammadReza]

Hi dear hskoglund & thanks for your response,
I added the code you mentioned but lineedit shows the ip address again! (Not hostname)!
I tested by "192.168.1.1" & a valid ip address but unfortunately did not work.

[MohammadReza]

Special thanks to dear hskoglund!
You are right.
I tested another IP addresses & worked!
Any idea about MAC address?

[hskoglund]

For your own computer to get the MAC addresses, you can use "QNetworkInterface::hardwareAddress":http://qt-project.org/doc/qt-5.0/qtnetwork/qnetworkinterface.html#hardwareAddress

For other computers on the same LAN, you need to use the ARP protocol. You can test, opening a CMD window, first ping the computer you want the MAC address of, then type
arp -a
(Physical address in the list is the MAC address)

[MohammadReza]

Thanks for your response dear hskoglund.
Is not there any function in Qt to get IP address & give MAC Address?

[hskoglund]

No for other computers on the same LAN I don't think so :-(
But if you write one such function using the ARP protocol you could contribute it to Qt.

[MohammadReza]

Thank you very much, dear hskoglund.
Ill search & if I find anyting, Ill put them here Insha'Allah.

Problem Marked as Solved!