Sahil Sahil - 12 days ago 15
iOS Question

iPhone Data Usage Tracking/Monitoring

I've searched over this topic but found very few details which were helpful. With these details I've tried to cook some code as follows.

Note: Please compare the details shared in this post with other posts before marking this as DUPLICATE, and not just by the subject.

- (NSArray *)getDataCountersForType:(int)type {
BOOL success;
struct ifaddrs *addrs = nil;
const struct ifaddrs *cursor = nil;
const struct sockaddr_dl *dlAddr = nil;
const struct if_data *networkStatisc = nil;

int dataSent = 0;
int dataReceived = 0;

success = getifaddrs(&addrs) == 0;
if (success) {
cursor = addrs;
while (cursor != NULL) {
if (cursor->ifa_addr->sa_family == AF_LINK) {
dlAddr = (const struct sockaddr_dl *) cursor->ifa_addr;
networkStatisc = (const struct if_data *) cursor->ifa_data;

if (type == WiFi) {
dataSent += networkStatisc->ifi_opackets;
dataReceived += networkStatisc->ifi_ipackets;
}
else if (type == WWAN) {
dataSent += networkStatisc->ifi_obytes;
dataReceived += networkStatisc->ifi_ibytes;
}
}
cursor = cursor->ifa_next;
}
freeifaddrs(addrs);
}
return [NSArray arrayWithObjects:[NSNumber numberWithInt:dataSent], [NSNumber numberWithInt:dataReceived], nil];
}


This code collects information of internet usage of an iPhone device (and not my application alone).

Now, if I use internet through WiFi or through 3G, I get the the data (bytes) only in
ifi_obytes
(sent) and
ifi_ibytes
(received) but I think I should get WiFi usage in
ifi_opackets
and
ifi_ipackets
.

Also wanted to add that if I'm connected to a WiFi network, but am not using internet, I still get value added to
ifi_obytes
and
ifi_ibytes
.

May be I'm wrong in the implementation or understanding. Need someone to help me out.




Edit: Instead of
AF_LINK
I tried
AF_INET
(
sockaddr_in
instead of
sockaddr_dl
). This crashes the application.

Answer

The thing is that pdp_ip0 is one of interfaces, all pdpXXX are WWAN interfaces dedicated to different functions, voicemail, general networking interface.

i read in apple forum that : The OS does not keep network statistics on a process-by-process basis. As such, there's no exact solution to this problem. You can, however, get network statistics for each network interface.

In general en0 is your Wi-Fi interface and pdp_ip0 is your WWAN interface.

There is no good way to get information wifi/cellular network data since, particular date-time!

data statistic (ifa_data->ifi_obytes and ifa_data->ifi_ibytes) are stored from previous device reboot.

i don't know why, but ifi_opackets and ifi_ipackets are shown just for lo0 (i think its main interface ).

yes. Then device is connected via WiFi and doesn't use internet if_iobytes values still come because this method provides network bytes exchanges and not just internet .

#include <arpa/inet.h>
#include <net/if.h>
#include <ifaddrs.h>
#include <net/if_dl.h>

static NSString *const DataCounterKeyWWANSent = @"WWANSent";
static NSString *const DataCounterKeyWWANReceived = @"WWANReceived";
static NSString *const DataCounterKeyWiFiSent = @"WiFiSent";
static NSString *const DataCounterKeyWiFiReceived = @"WiFiReceived";

NSDictionary *DataCounters()
{

    struct ifaddrs *addrs;
    const struct ifaddrs *cursor;

    u_int32_t WiFiSent = 0;
    u_int32_t WiFiReceived = 0;
    u_int32_t WWANSent = 0;
    u_int32_t WWANReceived = 0;

    if (getifaddrs(&addrs) == 0)
    {
        cursor = addrs;
        while (cursor != NULL)
        {
            if (cursor->ifa_addr->sa_family == AF_LINK)
            {
#ifdef DEBUG
                const struct if_data *ifa_data = (struct if_data *)cursor->ifa_data;
                if(ifa_data != NULL)
                {
                    NSLog(@"Interface name %s: sent %tu received %tu",cursor->ifa_name,ifa_data->ifi_obytes,ifa_data->ifi_ibytes);
                }
#endif

                // name of interfaces:
                // en0 is WiFi
                // pdp_ip0 is WWAN
                NSString *name = [NSString stringWithFormat:@"%s",cursor->ifa_name];
                if ([name hasPrefix:@"en"])
                {
                    const struct if_data *ifa_data = (struct if_data *)cursor->ifa_data;
                    if(ifa_data != NULL)
                    {
                        WiFiSent += ifa_data->ifi_obytes;
                        WiFiReceived += ifa_data->ifi_ibytes;
                    }
                }

                if ([name hasPrefix:@"pdp_ip"])
                {
                    const struct if_data *ifa_data = (struct if_data *)cursor->ifa_data;
                    if(ifa_data != NULL)
                    {
                        WWANSent += ifa_data->ifi_obytes;
                        WWANReceived += ifa_data->ifi_ibytes;
                    }
                }
            }

            cursor = cursor->ifa_next;
        }

        freeifaddrs(addrs);
    }

    return @{DataCounterKeyWiFiSent:[NSNumber numberWithUnsignedInt:WiFiSent],
             DataCounterKeyWiFiReceived:[NSNumber numberWithUnsignedInt:WiFiReceived],
             DataCounterKeyWWANSent:[NSNumber numberWithUnsignedInt:WWANSent],
             DataCounterKeyWWANReceived:[NSNumber numberWithUnsignedInt:WWANReceived]};
}

Improved copy/paste support !

Comments