Network problems

[SPlatten]

My application has two command line switches,/listNI and /useNI:, when I use /listNI the result is:

Network interfaces:
Ethernet 2
Ethernet
Ethernet 3
Local Area Connection* 1
Local Area Connection* 2
WiFi
Loopback Pseudo-Interface 1

When I start the application with /useNI:"Ethernet 2" I get:

Using specified interface: Ethernet 2
IP: 10.30.200.226 port: 30119

If I start the application with /useNI:"WiFi" I get:

Using specified interface: WiFi
IP: 10.30.200.226 port: 30119

Which to me looks wrong because if I use ipconfig -all in the command line I can see the Wireless LAN adapter WiFi has the IPv4 Address 192.168.5.52(Preferred), shouldn't the IP address issued by the adapter be in that range?

Here is the code I wrote to scan and use the network adapter:

QHostAddress SckServer::localAddress(QString* pstrInterface) {
    if ( pstrInterface != nullptr ) {
    //Ensure interface is empty until populated by results        
        *pstrInterface = "";
    }
    if ( SckServer::msblnOnlyLocalHost == true ) {
    //Working in local host mode
        return QHostAddress::LocalHost;
    }
    if ( SckServer::msstrInterface.isEmpty() != true ) {
    //Network interface has been specified use it!
        for( const QNetworkInterface& crInterface : QNetworkInterface::allInterfaces() ) {
            if ( crInterface.humanReadableName().compare(SckServer::msstrInterface) != 0 ) {
                continue;
            }
            for( const QHostAddress& address : crInterface.allAddresses() ) {
                if ( address.protocol() == QAbstractSocket::IPv4Protocol &&
                     address.isLoopback() != true ) {
                    if ( pstrInterface != nullptr ) {
                        *pstrInterface = SckServer::msstrInterface;
                    }
                    return address;
                }
            }
        }
    }
    for( const QHostAddress& address : QNetworkInterface::allAddresses() ) {
        if ( address.protocol() == QAbstractSocket::IPv4Protocol &&
             address.isLoopback() != true ) {
            return address;
        }
    }
    return QHostAddress::LocalHost;
}

When /useNI: is used the static member msstrInterface is set to the human readable name of the chosen adapter. I can see from the debug statement that the correct interface is being used but the IP always comes back as the same.

The code that produces the output:

    QString strInterface;
    const QHostAddress local(localAddress(&strInterface));
    //The server is also going to listen for UDP data
    qinf() << QString("%1IP: %2, Port: %3")
                .arg((strInterface.isEmpty() != true) ?
                        QString("Network adapter: %1, ")
                            .arg(SckServer::msstrInterface) : "")
                .arg(local.toString())
                .arg(SckServer::msuint16PortUDP);

[SPlatten]

@SPlatten, fixed by changing inner loop to:

            for( const QNetworkAddressEntry& crAddrEntry : crInterface.addressEntries() )
            {
                const QHostAddress& crAddr(crAddrEntry.ip());
                if ( crAddr.protocol() == QAbstractSocket::IPv4Protocol
                  && crAddr.isLoopback() != true )
                {
                    if ( pstrInterface != nullptr )
                    {
                        *pstrInterface = SckServer::msstrInterface;
                    }
                    return crAddr;
                }
            }

[Kent-Dorfman]

mark as solved?

[SPlatten]

@Kent-Dorfman It is solved.