qnetwork.mm

       QApplication qapp(argc, argv);
        
        {
            QNetworkConfigurationManager manager;
            QList<QNetworkConfiguration> configs(manager.allConfigurations());
            QNetworkConfiguration config;
            foreach (config, configs)
            {
                NSString* type;
                switch (config.type())
                {
                    case QNetworkConfiguration::InternetAccessPoint:
                        type = @"InternetAccessPoint";
                        break;
                    case QNetworkConfiguration::ServiceNetwork:
                        type = @"ServiceNetwork";
                        break;
                    case QNetworkConfiguration::UserChoice:
                        type = @"UserChoice";
                        break;
                    case QNetworkConfiguration::Invalid:
                        type = @"Invalid";
                        break;
                }
                
                NSString* state;
                switch (config.state())
                {
                    case QNetworkConfiguration::Undefined:
                        state = @"Undefined";
                        break;
                    case QNetworkConfiguration::Defined:
                        state = @"Defined";
                        break;
                    case QNetworkConfiguration::Discovered:
                        state = @"Discovered";
                        break;
                    case QNetworkConfiguration::Active:
                        state = @"Active";
                        break;
                }
                
                NSString* purpose;
                switch (config.purpose())
                {
                    case QNetworkConfiguration::UnknownPurpose:
                        purpose = @"UnknownPurpose";
                        break;
                    case QNetworkConfiguration::PublicPurpose:
                        purpose = @"PublicPurpose";
                        break;
                    case QNetworkConfiguration::PrivatePurpose:
                        purpose = @"PrivatePurpose";
                        break;
                    case QNetworkConfiguration::ServiceSpecificPurpose:
                        purpose = @"ServiceSpecificPurpose";
                        break;
                }
                NSLog(@"%@ (%@): bearer: %@, type: %@, state: %@, purpose: %@)",
                      config.name().toNSString(),
                      config.identifier().toNSString(),
                      config.bearerTypeName().toNSString(),
                      type,
                      state,
                      purpose);
            }
        }
    
        NSLog(@"********************************************************");
        
        {
            QList<QHostAddress> addresses(QNetworkInterface::allAddresses());
            foreach(QHostAddress host, addresses)
            {
                NSLog(@"%@", host.toString().toNSString());
            }
        }
        
        NSLog(@"********************************************************");
        
        {
            QList<QNetworkInterface> interfaces(QNetworkInterface::allInterfaces());
            foreach(QNetworkInterface interface, interfaces)
            {
                QNetworkInterface::InterfaceFlags flags = interface.flags();
                NSMutableArray* options = [NSMutableArray array];
                if (flags & QNetworkInterface::IsUp) [options addObject:@"up"];
                if (flags & QNetworkInterface::IsRunning) [options addObject:@"running"];
                if (flags & QNetworkInterface::CanBroadcast) [options addObject:@"broadcast"];
                if (flags & QNetworkInterface::IsLoopBack) [options addObject:@"loopback"];
                if (flags & QNetworkInterface::IsPointToPoint) [options addObject:@"point-to-point"];
                if (flags & QNetworkInterface::CanMulticast) [options addObject:@"multicast"];
                NSLog(@"%@: name: %@, valid: %@, flags: %@",
                      interface.humanReadableName().toNSString(),
                      interface.name().toNSString(),
                      interface.isValid() ? @"YES" : @"NO",
                      [options componentsJoinedByString:@" | "]);
            }
        }
        
        NSLog(@"********************************************************");
        
        {
            for (NSString* addr in @[@"127.0.0.1", @"127.0.0.100", @"8.8.8.8", @"1.2.3.4", @"173.194.45.69", @"0.0.0.0", @"255.255.255.255"])
            {
                QHostAddress host(QString::fromNSString(addr));
                
                QUdpSocket udpSocket;
                qint64 res = udpSocket.writeDatagram("", 0, host, 5000);
                NSLog(@"%@: %@", addr, @(res));
            }
        }