filter QNetworkInterface::hardwareAddress()

[prophet0]

The following code

foreach (const QNetworkInterface &ni,  QNetworkInterface::allInterfaces()) {
        if (!(ni.flags() & ni.IsLoopBack)){
            macName = ni.hardwareAddress();      // lets match & get our information for this device
        qDebug() << macName;

foreach (const QNetworkInterface &ni,  QNetworkInterface::allInterfaces()) {
        if (!(ni.flags() & ni.IsLoopBack)){
            macName = ni.hardwareAddress();      // lets match & get our information for this device
        qDebug() << macName;

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outputs

"00:1C:DF:93:1D:5D" 
"00:1C:DF:93:1D:5D" 
"00:23:AE:A8:26:FC"   // this one being Local Area Connection
"00:50:56:C0:00:01" 
"00:50:56:C0:00:08" 
"3E:9B:20:52:41:53" 
"3E:9B:20:52:41:53" 
"00:23:AE:A8:26:FC" 
"00:23:AE:A8:26:FC" 
"3E:9B:20:52:41:53" 
"3E:9B:20:52:41:53" 
"3E:9B:20:52:41:53" 
"3E:9B:20:52:41:53" 
"20:41:53:59:4E:FF" 
"00:00:00:00:00:00:00:00" 
"00:00:00:00:00:00:00:E0" 
"00:00:00:00:00:00:00:E0" 
"00:00:00:00:00:00:00:E0" 
"00:00:00:00:00:00:00:E0" 
"00:00:00:00:00:00:00:E0"

"00:1C:DF:93:1D:5D" 
"00:1C:DF:93:1D:5D" 
"00:23:AE:A8:26:FC"   // this one being Local Area Connection
"00:50:56:C0:00:01" 
"00:50:56:C0:00:08" 
"3E:9B:20:52:41:53" 
"3E:9B:20:52:41:53" 
"00:23:AE:A8:26:FC" 
"00:23:AE:A8:26:FC" 
"3E:9B:20:52:41:53" 
"3E:9B:20:52:41:53" 
"3E:9B:20:52:41:53" 
"3E:9B:20:52:41:53" 
"20:41:53:59:4E:FF" 
"00:00:00:00:00:00:00:00" 
"00:00:00:00:00:00:00:E0" 
"00:00:00:00:00:00:00:E0" 
"00:00:00:00:00:00:00:E0" 
"00:00:00:00:00:00:00:E0" 
"00:00:00:00:00:00:00:E0"

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how can i filter threw the hardware addresses where QNetworkInterface::humanReadableName = local area connection and spit that one out only ?

[Spitfire]

Unless I'm not getting something it sounds pretty straight forward.

Just loop through the interfaces comparing humanReadableName() to your string and if you find a match return hardwareAddress().

[ChrisW67]

If you don't want all the addresses why go looking for them? QNetworkInterface::interfaceFromName() is the direct method.

[prophet0]

QString string = "Local Area Connection"; 
qDebug() << ni.interfaceFromName(string);

QString string = "Local Area Connection"; 
qDebug() << ni.interfaceFromName(string);

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shows

QNetworkInterface(name = "", hardware address = "", flags = , entries = () )
 
QNetworkInterface(name = "", hardware address = "", flags = , entries = () )
 
QNetworkInterface(name = "", hardware address = "", flags = , entries = () )
 
QNetworkInterface(name = "", hardware address = "", flags = , entries = () )
 
QNetworkInterface(name = "", hardware address = "", flags = , entries = () )
 
QNetworkInterface(name = "", hardware address = "", flags = , entries = () )
 
QNetworkInterface(name = "", hardware address = "", flags = , entries = () )
 
QNetworkInterface(name = "", hardware address = "", flags = , entries = () )
 
QNetworkInterface(name = "", hardware address = "", flags = , entries = () )
 
QNetworkInterface(name = "", hardware address = "", flags = , entries = () )
 
QNetworkInterface(name = "", hardware address = "", flags = , entries = () )
 
QNetworkInterface(name = "", hardware address = "", flags = , entries = () )
 
QNetworkInterface(name = "", hardware address = "", flags = , entries = () )
 
QNetworkInterface(name = "", hardware address = "", flags = , entries = () )
 
QNetworkInterface(name = "", hardware address = "", flags = , entries = () )
 
QNetworkInterface(name = "", hardware address = "", flags = , entries = () )
 
QNetworkInterface(name = "", hardware address = "", flags = , entries = () )
 
QNetworkInterface(name = "", hardware address = "", flags = , entries = () )
 
QNetworkInterface(name = "", hardware address = "", flags = , entries = () )
 
QNetworkInterface(name = "", hardware address = "", flags = , entries = () )

QNetworkInterface(name = "", hardware address = "", flags = , entries = () )
  
QNetworkInterface(name = "", hardware address = "", flags = , entries = () )
  
QNetworkInterface(name = "", hardware address = "", flags = , entries = () )
  
QNetworkInterface(name = "", hardware address = "", flags = , entries = () )
  
QNetworkInterface(name = "", hardware address = "", flags = , entries = () )
  
QNetworkInterface(name = "", hardware address = "", flags = , entries = () )
  
QNetworkInterface(name = "", hardware address = "", flags = , entries = () )
  
QNetworkInterface(name = "", hardware address = "", flags = , entries = () )
  
QNetworkInterface(name = "", hardware address = "", flags = , entries = () )
  
QNetworkInterface(name = "", hardware address = "", flags = , entries = () )
  
QNetworkInterface(name = "", hardware address = "", flags = , entries = () )
  
QNetworkInterface(name = "", hardware address = "", flags = , entries = () )
  
QNetworkInterface(name = "", hardware address = "", flags = , entries = () )
  
QNetworkInterface(name = "", hardware address = "", flags = , entries = () )
  
QNetworkInterface(name = "", hardware address = "", flags = , entries = () )
  
QNetworkInterface(name = "", hardware address = "", flags = , entries = () )
  
QNetworkInterface(name = "", hardware address = "", flags = , entries = () )
  
QNetworkInterface(name = "", hardware address = "", flags = , entries = () )
  
QNetworkInterface(name = "", hardware address = "", flags = , entries = () )
  
QNetworkInterface(name = "", hardware address = "", flags = , entries = () )

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So now you can see my confusion

[Spitfire]

interfaceFromName() expects interface name returned by QNetworkInterface::name() (ie "{D6637618-7E2B-466B-B02B-C35A1FA9118F}") not QNetworkInterface::humanReadableName().

So, if you want to find interface by human readable name you have to loop through the interfaces and find it yourself.

In the end it's only few lines of code:

QList< QNetworkInterface >  it = QNetworkInterface::allInterfaces();
for( int i = 0; i < it.size(); ++i )
{
    if( it.at( i ).humanReadableName() == "Local Area Connection" )
    {
        qDebug() << it.at( i ).hardwareAddress();
        break;
    }
}

QList< QNetworkInterface >  it = QNetworkInterface::allInterfaces();
for( int i = 0; i < it.size(); ++i )
{
    if( it.at( i ).humanReadableName() == "Local Area Connection" )
    {
        qDebug() << it.at( i ).hardwareAddress();
        break;
    }
}

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[prophet0]

That works perfectly thanks very much

[ChrisW67]

interfaceFromName() expects interface name returned by QNetworkInterface::name() (ie "{D6637618-7E2B-466B-B02B-C35A1FA9118F}") not QNetworkInterface::humanReadableName().

Is that some Windows perversion? QNetworkInterface::interfaceFromName() works perfectly fine with "eth0", i.e. the same as the humanReadableName(), on Linux.

[Spitfire]

On linux both are the same but Microsoft invented 'better' way, obviously