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[solved][iOS][Qt 5.4] QNetworkConfiguration, get bearer type not working



  • Hey,

    I got a problem with getting bearer type from QNetworkConfiguration class on iOS, not sure if I'm missing some permissions for my app or it just simply is not working.

    I try to get information if the user is connected to the internet by WLAN or 3G but the only thing I get is active configurations, the type is always Unknown.

    the code below:
    @QNetworkConfigurationManager a;
    QList<QNetworkConfiguration> ttt = a.allConfigurations();
    for(int i = 0 ; i < ttt.count(); i++)
    {
    if(ttt.at(i).state() & (0x8))
    qDebug() << "ACTIVE:" << ttt.at(i).bearerTypeName() << ttt.at(i).bearerType();
    else
    qDebug() << "INACTIVE:" << ttt.at(i).bearerTypeName() --<< ttt.at(i).bearerType();
    }@

    On my iPad it discovers 2 active interfaces and 1 inactive but all of them are unknown.

    Any solutions? Do I need to use Objective-C to get this?


  • Lifetime Qt Champion

    Hi,

    I know it might be a silly question but, are you using a real device or the iOS simulator ?



  • Real device, as I said its ipad mini



  • Have you found a solution for your problem? I'm having the same and I don't want to use Objective-C if it works straight with Qt.



  • I couldn't figure it out, how to deal with the problem using Qt, so I was forced to use Objective-C. Its rather easy.



  • Could you post some example?
    Currently I'm trying to resolve my issue by using Reachability.h and Reachability.m which are metioned here, but I can't get it to work.



  • Sure, I got one class in objective-C and one parser between objective-c and cpp.

    First object-C code to get what you want(reachability.m):

    /*
         File: Reachability.m
     Abstract: Basic demonstration of how to use the SystemConfiguration Reachablity APIs.
      Version: 3.5
    
     Disclaimer: IMPORTANT:  This Apple software is supplied to you by Apple
     Inc. ("Apple") in consideration of your agreement to the following
     terms, and your use, installation, modification or redistribution of
     this Apple software constitutes acceptance of these terms.  If you do
     not agree with these terms, please do not use, install, modify or
     redistribute this Apple software.
    
     In consideration of your agreement to abide by the following terms, and
     subject to these terms, Apple grants you a personal, non-exclusive
     license, under Apple's copyrights in this original Apple software (the
     "Apple Software"), to use, reproduce, modify and redistribute the Apple
     Software, with or without modifications, in source and/or binary forms;
     provided that if you redistribute the Apple Software in its entirety and
     without modifications, you must retain this notice and the following
     text and disclaimers in all such redistributions of the Apple Software.
     Neither the name, trademarks, service marks or logos of Apple Inc. may
     be used to endorse or promote products derived from the Apple Software
     without specific prior written permission from Apple.  Except as
     expressly stated in this notice, no other rights or licenses, express or
     implied, are granted by Apple herein, including but not limited to any
     patent rights that may be infringed by your derivative works or by other
     works in which the Apple Software may be incorporated.
    
     The Apple Software is provided by Apple on an "AS IS" basis.  APPLE
     MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION
     THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS
     FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND
     OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS.
    
     IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL
     OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION,
     MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED
     AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE),
     STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE
     POSSIBILITY OF SUCH DAMAGE.
    
     Copyright (C) 2014 Apple Inc. All Rights Reserved.
    
     */
    
    #import <arpa/inet.h>
    #import <ifaddrs.h>
    #import <netdb.h>
    #import <sys/socket.h>
    
    #import <CoreFoundation/CoreFoundation.h>
    
    #import "reachability.h"
    
    
    NSString *kReachabilityChangedNotification = @"kNetworkReachabilityChangedNotification";
    
    
    #pragma mark - Supporting functions
    
    #define kShouldPrintReachabilityFlags 0
    
    static void PrintReachabilityFlags(SCNetworkReachabilityFlags flags, const char* comment)
    {
    #if kShouldPrintReachabilityFlags
    
        NSLog(@"Reachability Flag Status: %c%c %c%c%c%c%c%c%c %s\n",
              (flags & kSCNetworkReachabilityFlagsIsWWAN)               ? 'W' : '-',
              (flags & kSCNetworkReachabilityFlagsReachable)            ? 'R' : '-',
    
              (flags & kSCNetworkReachabilityFlagsTransientConnection)  ? 't' : '-',
              (flags & kSCNetworkReachabilityFlagsConnectionRequired)   ? 'c' : '-',
              (flags & kSCNetworkReachabilityFlagsConnectionOnTraffic)  ? 'C' : '-',
              (flags & kSCNetworkReachabilityFlagsInterventionRequired) ? 'i' : '-',
              (flags & kSCNetworkReachabilityFlagsConnectionOnDemand)   ? 'D' : '-',
              (flags & kSCNetworkReachabilityFlagsIsLocalAddress)       ? 'l' : '-',
              (flags & kSCNetworkReachabilityFlagsIsDirect)             ? 'd' : '-',
              comment
              );
    #endif
    }
    
    
    static void ReachabilityCallback(SCNetworkReachabilityRef target, SCNetworkReachabilityFlags flags, void* info)
    {
    #pragma unused (target, flags)
        NSCAssert(info != NULL, @"info was NULL in ReachabilityCallback");
        NSCAssert([(__bridge NSObject*) info isKindOfClass: [Reachability class]], @"info was wrong class in ReachabilityCallback");
    
        Reachability* noteObject = (__bridge Reachability *)info;
        // Post a notification to notify the client that the network reachability changed.
        [[NSNotificationCenter defaultCenter] postNotificationName: kReachabilityChangedNotification object: noteObject];
    }
    
    
    #pragma mark - Reachability implementation
    
    @implementation Reachability
    {
        BOOL _alwaysReturnLocalWiFiStatus; //default is NO
        SCNetworkReachabilityRef _reachabilityRef;
    }
    
    + (instancetype)reachabilityWithHostName:(NSString *)hostName
    {
        Reachability* returnValue = NULL;
        SCNetworkReachabilityRef reachability = SCNetworkReachabilityCreateWithName(NULL, [hostName UTF8String]);
        if (reachability != NULL)
        {
            returnValue= [[self alloc] init];
            if (returnValue != NULL)
            {
                returnValue->_reachabilityRef = reachability;
                returnValue->_alwaysReturnLocalWiFiStatus = NO;
            }
        }
        return returnValue;
    }
    
    
    + (instancetype)reachabilityWithAddress:(const struct sockaddr_in *)hostAddress
    {
        SCNetworkReachabilityRef reachability = SCNetworkReachabilityCreateWithAddress(kCFAllocatorDefault, (const struct sockaddr *)hostAddress);
    
        Reachability* returnValue = NULL;
    
        if (reachability != NULL)
        {
            returnValue = [[self alloc] init];
            if (returnValue != NULL)
            {
                returnValue->_reachabilityRef = reachability;
                returnValue->_alwaysReturnLocalWiFiStatus = NO;
            }
        }
        return returnValue;
    }
    
    
    
    + (instancetype)reachabilityForInternetConnection
    {
        struct sockaddr_in zeroAddress;
        bzero(&zeroAddress, sizeof(zeroAddress));
        zeroAddress.sin_len = sizeof(zeroAddress);
        zeroAddress.sin_family = AF_INET;
    
        return [self reachabilityWithAddress:&zeroAddress];
    }
    
    
    + (instancetype)reachabilityForLocalWiFi
    {
        struct sockaddr_in localWifiAddress;
        bzero(&localWifiAddress, sizeof(localWifiAddress));
        localWifiAddress.sin_len = sizeof(localWifiAddress);
        localWifiAddress.sin_family = AF_INET;
    
        // IN_LINKLOCALNETNUM is defined in <netinet/in.h> as 169.254.0.0.
        localWifiAddress.sin_addr.s_addr = htonl(IN_LINKLOCALNETNUM);
    
        Reachability* returnValue = [self reachabilityWithAddress: &localWifiAddress];
        if (returnValue != NULL)
        {
            returnValue->_alwaysReturnLocalWiFiStatus = YES;
        }
    
        return returnValue;
    }
    
    
    #pragma mark - Start and stop notifier
    
    - (BOOL)startNotifier
    {
        BOOL returnValue = NO;
        SCNetworkReachabilityContext context = {0, (__bridge void *)(self), NULL, NULL, NULL};
    
        if (SCNetworkReachabilitySetCallback(_reachabilityRef, ReachabilityCallback, &context))
        {
            if (SCNetworkReachabilityScheduleWithRunLoop(_reachabilityRef, CFRunLoopGetCurrent(), kCFRunLoopDefaultMode))
            {
                returnValue = YES;
            }
        }
    
        return returnValue;
    }
    
    
    - (void)stopNotifier
    {
        if (_reachabilityRef != NULL)
        {
            SCNetworkReachabilityUnscheduleFromRunLoop(_reachabilityRef, CFRunLoopGetCurrent(), kCFRunLoopDefaultMode);
        }
    }
    
    
    - (void)dealloc
    {
        [self stopNotifier];
        if (_reachabilityRef != NULL)
        {
            CFRelease(_reachabilityRef);
        }
    }
    
    
    #pragma mark - Network Flag Handling
    
    - (NetworkStatus)localWiFiStatusForFlags:(SCNetworkReachabilityFlags)flags
    {
        PrintReachabilityFlags(flags, "localWiFiStatusForFlags");
        NetworkStatus returnValue = NotReachable;
    
        if ((flags & kSCNetworkReachabilityFlagsReachable) && (flags & kSCNetworkReachabilityFlagsIsDirect))
        {
            returnValue = ReachableViaWiFi;
        }
    
        return returnValue;
    }
    
    
    - (NetworkStatus)networkStatusForFlags:(SCNetworkReachabilityFlags)flags
    {
        PrintReachabilityFlags(flags, "networkStatusForFlags");
        if ((flags & kSCNetworkReachabilityFlagsReachable) == 0)
        {
            // The target host is not reachable.
            return NotReachable;
        }
    
        NetworkStatus returnValue = NotReachable;
    
        if ((flags & kSCNetworkReachabilityFlagsConnectionRequired) == 0)
        {
            /*
             If the target host is reachable and no connection is required then we'll assume (for now) that you're on Wi-Fi...
             */
            returnValue = ReachableViaWiFi;
        }
    
        if ((((flags & kSCNetworkReachabilityFlagsConnectionOnDemand ) != 0) ||
            (flags & kSCNetworkReachabilityFlagsConnectionOnTraffic) != 0))
        {
            /*
             ... and the connection is on-demand (or on-traffic) if the calling application is using the CFSocketStream or higher APIs...
             */
    
            if ((flags & kSCNetworkReachabilityFlagsInterventionRequired) == 0)
            {
                /*
                 ... and no [user] intervention is needed...
                 */
                returnValue = ReachableViaWiFi;
            }
        }
    
        if ((flags & kSCNetworkReachabilityFlagsIsWWAN) == kSCNetworkReachabilityFlagsIsWWAN)
        {
            /*
             ... but WWAN connections are OK if the calling application is using the CFNetwork APIs.
             */
            returnValue = ReachableViaWWAN;
        }
    
        return returnValue;
    }
    
    
    - (BOOL)connectionRequired
    {
        NSAssert(_reachabilityRef != NULL, @"connectionRequired called with NULL reachabilityRef");
        SCNetworkReachabilityFlags flags;
    
        if (SCNetworkReachabilityGetFlags(_reachabilityRef, &flags))
        {
            return (flags & kSCNetworkReachabilityFlagsConnectionRequired);
        }
    
        return NO;
    }
    
    
    - (NetworkStatus)currentReachabilityStatus
    {
        NSAssert(_reachabilityRef != NULL, @"currentNetworkStatus called with NULL SCNetworkReachabilityRef");
        NetworkStatus returnValue = NotReachable;
        SCNetworkReachabilityFlags flags;
    
        if (SCNetworkReachabilityGetFlags(_reachabilityRef, &flags))
        {
            if (_alwaysReturnLocalWiFiStatus)
            {
                returnValue = [self localWiFiStatusForFlags:flags];
            }
            else
            {
                returnValue = [self networkStatusForFlags:flags];
            }
        }
    
        return returnValue;
    }
    
    
    @end
    

    Then myobject.mm:

    #import "MyObject.h"
    
    @implementation MyObject
    
    MyClassImpl::MyClassImpl( void )
        : self( NULL )
    {
        if ([[UIApplication sharedApplication] respondsToSelector:@selector(registerUserNotificationSettings:)])
        {
            [[UIApplication sharedApplication] registerUserNotificationSettings:[UIUserNotificationSettings settingsForTypes:(UIUserNotificationTypeSound | UIUserNotificationTypeAlert | UIUserNotificationTypeBadge) categories:nil]];
            
        }
        else
        {
            [[UIApplication sharedApplication] registerForRemoteNotificationTypes:
             (UIUserNotificationTypeBadge | UIUserNotificationTypeSound | UIUserNotificationTypeAlert)];
        }
    }
    
    MyClassImpl::~MyClassImpl( void )
    {
        [(id)self dealloc];
    }
    
    void MyClassImpl::init( void )
    {
        self = [[MyObject alloc] init];
    }
    
    
    
    int MyClassImpl::doSomethingWith( void *aParameter )
    {
        
        
        
        
        
        Reachability *reachability = [Reachability reachabilityForInternetConnection];
        [reachability startNotifier];
    
        NetworkStatus status = [reachability currentReachabilityStatus];
    
        if(status == NotReachable)
        {
            return -1;
            //No internet
        }
        else if (status == ReachableViaWiFi)
        {
            return 0;
            //WiFi
        }
        else if (status == ReachableViaWWAN)
        {
            return 1;
            //3G or 4G
        }
        return [(id)self doSomethingWith:aParameter];
    }
    
    void MyClassImpl::logMyMessage( char *aCStr )
    {
        [(id)self doLogMessage:aCStr];
    }
    
    - (int) doSomethingWith:(void *) aParameter
    {
        int result = 0;
    
        // ... some code to calculate the result
    
        return result;
    }
    
    - (void) logMyMessage:(char *) aCStr
    {
        //NSLog( aCStr );
    }
    
    @end
    

    MyObject.h:

    #import "MyObject-C-Interface.h"
    #import <Foundation/Foundation.h>
    #import <UIKit/UIKit.h>
    #import "reachability.h"
    
    @interface MyObject : NSObject
    {
        int someVar;
    }
    
    - (int)  doSomethingWith:(void *) aParameter;
    - (void) logMyMessage:(char *) aCStr;
    
    @end
    

    and myobject-c-interface.h

    #ifndef __MYOBJECT_C_INTERFACE_H__
    #define __MYOBJECT_C_INTERFACE_H__
    
    class MyClassImpl
    {
    public:
        MyClassImpl ( void );
        ~MyClassImpl( void );
    
        void init( void );
        int  doSomethingWith( void * aParameter );
        void logMyMessage( char * aCStr );
    
    private:
        void * self;
    };
    
    #endif
    

    Now you only need to include myobject-c-interface.h
    and use the function int doSomethingWith( void * aParameter );

    I know its not ideal but doest works and needs to refractor some names, but I used it only a few times.
    It only discovers if the phone is connected through 3g/4g(1) or wifi(0), or its disconnected(-1).



  • Worked like a charm, thank you very much. :)


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