Seguimiento / Monitoreo del uso de datos de iPhone

He buscado sobre este tema, pero encontré muy pocos detalles que fueron útiles. Con estos detalles, he intentado cocinar un código de la siguiente manera.

Nota: compare los detalles compartidos en esta publicación con otras publicaciones antes de marcar esto como DUPLICADO, y no solo por el tema.

- (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];    
}

Este código recopila información sobre el uso de Internet de un dispositivo iPhone (y no solo mi aplicación).

Ahora, si uso internet a través de WiFi o 3G, obtengo los datos (bytes) solo en ifi_obytes(enviado) y ifi_ibytes(recibido) pero creo que debería obtener el uso de WiFi en ifi_opacketsy ifi_ipackets.

También quería agregar que si estoy conectado a una red WiFi, pero no estoy usando Internet, todavía obtengo valor agregado ifi_obytesy ifi_ibytes.

Puede ser que me equivoque en la implementación o comprensión. Necesito a alguien que me ayude.

Editar: en lugar de AF_LINKlo intenté AF_INET(en sockaddr_inlugar de sockaddr_dl). Esto bloquea la aplicación.

La cosa es que pdp_ip0es una de las interfaces, todas pdpXXXson WWANinterfaces dedicadas a diferentes funciones, correo de voz, interfaz de red general.

Leí en el foro de Apple que: El sistema operativo no mantiene las estadísticas de la red proceso por proceso. Como tal, no hay una solución exacta para este problema. Sin embargo, puede obtener estadísticas de red para cada interfaz de red.

En general en0es su Wi-Fiinterfaz y pdp_ip0es su WWANinterfaz.

No hay una buena manera de obtener información de la red wifi / celular ya que, en particular, la fecha y la hora.

La estadística de datos ( ifa_data->ifi_obytesy ifa_data->ifi_ibytes) se almacena desde el reinicio del dispositivo anterior.

No sé por qué, pero ifi_opacketsy ifi_ipacketsse muestran solo para lo0(creo que es su interfaz principal).

Si. Luego, el dispositivo se conecta a través de WiFiy todavía no utiliza if_iobytesvalores de Internet porque este método proporciona intercambios de bytes de red y no solo Internet.

#include <net/if.h>
#include <ifaddrs.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 = @(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 : @(WiFiSent),
             DataCounterKeyWiFiReceived : @(WiFiReceived),
             DataCounterKeyWWANSent : @(WWANSent),
             DataCounterKeyWWANReceived : @(WWANReceived)};
}

¡Soporte mejorado para copiar / pegar!

Es importante comprender que estos contadores se proporcionan desde el último inicio del dispositivo.

Por lo tanto, para hacer un uso efectivo de ellos, debe acompañar cada muestra con el tiempo de actividad del dispositivo (puede usarlo mach_absolute_time(); consulte esto para obtener más información)

Una vez que tenga muestras de contadores + tiempo de actividad, puede tener mejores heurísticas en cuanto al uso de datos ...

Para agregar a la respuesta aceptada, es importante darse cuenta de que la cantidad de datos que muestra la interfaz se desborda y se reinicia 0después de cada 4 GB, especialmente si está utilizando este código para calcular la diferencia entre dos lecturas. Esto es porque ifi_obytesy ifi_ibytesare uint_32y su valor máximo es 4294967295.

Además, recomiendo usar unsigned ints para las variables que contienen los datos enviados y recibidos. Los ints regulares tienen la mitad del valor máximo de un entero sin signo, por lo que al agregarlos ifi_obytes, puede causar un desbordamiento.

unsigned int sent = 0;
sent += networkStatisc->ifi_obytes;

Versión rápida de la respuesta aceptada. También divido el código en unidades más pequeñas.

struct DataUsageInfo {
    var wifiReceived: UInt32 = 0
    var wifiSent: UInt32 = 0
    var wirelessWanDataReceived: UInt32 = 0
    var wirelessWanDataSent: UInt32 = 0

    mutating func updateInfoByAdding(info: DataUsageInfo) {
        wifiSent += info.wifiSent
        wifiReceived += info.wifiReceived
        wirelessWanDataSent += info.wirelessWanDataSent
        wirelessWanDataReceived += info.wirelessWanDataReceived
    }
}

class DataUsage {

    private static let wwanInterfacePrefix = "pdp_ip"
    private static let wifiInterfacePrefix = "en"

    class func getDataUsage() -> DataUsageInfo {
        var interfaceAddresses: UnsafeMutablePointer<ifaddrs> = nil
        var dataUsageInfo = DataUsageInfo()

        guard getifaddrs(&interfaceAddresses) == 0 else { return dataUsageInfo }

        var pointer = interfaceAddresses
        while pointer != nil {
            guard let info = getDataUsageInfo(from: pointer) else {
                pointer = pointer.memory.ifa_next
                continue
            }
            dataUsageInfo.updateInfoByAdding(info)
            pointer = pointer.memory.ifa_next
        }

        freeifaddrs(interfaceAddresses)

        return dataUsageInfo
    }

    private class func getDataUsageInfo(from infoPointer: UnsafeMutablePointer<ifaddrs>) -> DataUsageInfo? {
        let pointer = infoPointer

        let name: String! = String.fromCString(infoPointer.memory.ifa_name)

        let addr = pointer.memory.ifa_addr.memory
        guard addr.sa_family == UInt8(AF_LINK) else { return nil }

        return dataUsageInfo(from: pointer, name: name)
    }

    private class func dataUsageInfo(from pointer: UnsafeMutablePointer<ifaddrs>, name: String) -> DataUsageInfo {
        var networkData: UnsafeMutablePointer<if_data> = nil
        var dataUsageInfo = DataUsageInfo()

        if name.hasPrefix(wifiInterfacePrefix) {
            networkData = unsafeBitCast(pointer.memory.ifa_data, UnsafeMutablePointer<if_data>.self)
            dataUsageInfo.wifiSent += networkData.memory.ifi_obytes
            dataUsageInfo.wifiReceived += networkData.memory.ifi_ibytes
        } else if name.hasPrefix(wwanInterfacePrefix) {
            networkData = unsafeBitCast(pointer.memory.ifa_data, UnsafeMutablePointer<if_data>.self)
            dataUsageInfo.wirelessWanDataSent += networkData.memory.ifi_obytes
            dataUsageInfo.wirelessWanDataReceived += networkData.memory.ifi_ibytes
        }

        return dataUsageInfo
    }
}

Arreglé el código fuente anterior a la versión Swift3

struct DataUsageInfo {
    var wifiReceived: UInt32 = 0
    var wifiSent: UInt32 = 0
    var wirelessWanDataReceived: UInt32 = 0
    var wirelessWanDataSent: UInt32 = 0

    mutating func updateInfoByAdding(_ info: DataUsageInfo) {
        wifiSent += info.wifiSent
        wifiReceived += info.wifiReceived
        wirelessWanDataSent += info.wirelessWanDataSent
        wirelessWanDataReceived += info.wirelessWanDataReceived
    }
}


class DataUsage {

    private static let wwanInterfacePrefix = "pdp_ip"
    private static let wifiInterfacePrefix = "en"

    class func getDataUsage() -> DataUsageInfo {
        var ifaddr: UnsafeMutablePointer<ifaddrs>?
        var dataUsageInfo = DataUsageInfo()

        guard getifaddrs(&ifaddr) == 0 else { return dataUsageInfo }
        while let addr = ifaddr {
            guard let info = getDataUsageInfo(from: addr) else {
                ifaddr = addr.pointee.ifa_next
                continue
            }
            dataUsageInfo.updateInfoByAdding(info)
            ifaddr = addr.pointee.ifa_next
        }

        freeifaddrs(ifaddr)

        return dataUsageInfo
    }

    private class func getDataUsageInfo(from infoPointer: UnsafeMutablePointer<ifaddrs>) -> DataUsageInfo? {
        let pointer = infoPointer
        let name: String! = String(cString: pointer.pointee.ifa_name)
        let addr = pointer.pointee.ifa_addr.pointee
        guard addr.sa_family == UInt8(AF_LINK) else { return nil }

        return dataUsageInfo(from: pointer, name: name)
    }

    private class func dataUsageInfo(from pointer: UnsafeMutablePointer<ifaddrs>, name: String) -> DataUsageInfo {
        var networkData: UnsafeMutablePointer<if_data>?
        var dataUsageInfo = DataUsageInfo()

        if name.hasPrefix(wifiInterfacePrefix) {
            networkData = unsafeBitCast(pointer.pointee.ifa_data, to: UnsafeMutablePointer<if_data>.self)
            if let data = networkData {
                dataUsageInfo.wifiSent += data.pointee.ifi_obytes
                dataUsageInfo.wifiReceived += data.pointee.ifi_ibytes
            }

        } else if name.hasPrefix(wwanInterfacePrefix) {
            networkData = unsafeBitCast(pointer.pointee.ifa_data, to: UnsafeMutablePointer<if_data>.self)
            if let data = networkData {
                dataUsageInfo.wirelessWanDataSent += data.pointee.ifi_obytes
                dataUsageInfo.wirelessWanDataReceived += data.pointee.ifi_ibytes
            }
        }

        return dataUsageInfo
    }
}

Una nueva versión basada en versiones anteriores, pero adaptada para Swift4 y Xcode 9

struct DataUsageInfo {
    var wifiReceived: UInt32 = 0
    var wifiSent: UInt32 = 0
    var wirelessWanDataReceived: UInt32 = 0
    var wirelessWanDataSent: UInt32 = 0

    mutating func updateInfoByAdding(info: DataUsageInfo) {
        wifiSent += info.wifiSent
        wifiReceived += info.wifiReceived
        wirelessWanDataSent += info.wirelessWanDataSent
        wirelessWanDataReceived += info.wirelessWanDataReceived
    }
}

class DataUsage {

    private static let wwanInterfacePrefix = "pdp_ip"
    private static let wifiInterfacePrefix = "en"

    class func getDataUsage() -> DataUsageInfo {
        var interfaceAddresses: UnsafeMutablePointer<ifaddrs>? = nil

        var dataUsageInfo = DataUsageInfo()

        guard getifaddrs(&interfaceAddresses) == 0 else { return dataUsageInfo }

        var pointer = interfaceAddresses
        while pointer != nil {
            guard let info = getDataUsageInfo(from: pointer!) else {
                pointer = pointer!.pointee.ifa_next
                continue
            }
            dataUsageInfo.updateInfoByAdding(info: info)
            pointer = pointer!.pointee.ifa_next
        }

        freeifaddrs(interfaceAddresses)

        return dataUsageInfo
    }

    private class func getDataUsageInfo(from infoPointer: UnsafeMutablePointer<ifaddrs>) -> DataUsageInfo? {
        let pointer = infoPointer

        let name: String! = String(cString: infoPointer.pointee.ifa_name)
        let addr = pointer.pointee.ifa_addr.pointee
        guard addr.sa_family == UInt8(AF_LINK) else { return nil }

        return dataUsageInfo(from: pointer, name: name)
    }

    private class func dataUsageInfo(from pointer: UnsafeMutablePointer<ifaddrs>, name: String) -> DataUsageInfo {
        var networkData: UnsafeMutablePointer<if_data>? = nil
        var dataUsageInfo = DataUsageInfo()

        if name.hasPrefix(wifiInterfacePrefix) {
            networkData = unsafeBitCast(pointer.pointee.ifa_data, to: UnsafeMutablePointer<if_data>.self)
            dataUsageInfo.wifiSent += networkData?.pointee.ifi_obytes ?? 0
            dataUsageInfo.wifiReceived += networkData?.pointee.ifi_ibytes ?? 0
        } else if name.hasPrefix(wwanInterfacePrefix) {
            networkData = unsafeBitCast(pointer.pointee.ifa_data, to: UnsafeMutablePointer<if_data>.self)
            dataUsageInfo.wirelessWanDataSent += networkData?.pointee.ifi_obytes ?? 0
            dataUsageInfo.wirelessWanDataReceived += networkData?.pointee.ifi_ibytes ?? 0
        }

        return dataUsageInfo
    }
}

Perdón por la misma respuesta de nuevo.

pero descubrí que UInt32 no es suficiente, por lo que se bloquea cuando se vuelve demasiado grande.

Acabo de cambiar UInt32 a UInt64 y funciona bien.

struct DataUsageInfo {
    var wifiReceived: UInt64 = 0
    var wifiSent: UInt64 = 0
    var wirelessWanDataReceived: UInt64 = 0
    var wirelessWanDataSent: UInt64 = 0

    mutating func updateInfoByAdding(info: DataUsageInfo) {
        wifiSent += info.wifiSent
        wifiReceived += info.wifiReceived
        wirelessWanDataSent += info.wirelessWanDataSent
        wirelessWanDataReceived += info.wirelessWanDataReceived
    }
}

class DataUsage {

    private static let wwanInterfacePrefix = "pdp_ip"
    private static let wifiInterfacePrefix = "en"

    class func getDataUsage() -> DataUsageInfo {
        var interfaceAddresses: UnsafeMutablePointer<ifaddrs>? = nil

        var dataUsageInfo = DataUsageInfo()

        guard getifaddrs(&interfaceAddresses) == 0 else { return dataUsageInfo }

        var pointer = interfaceAddresses
        while pointer != nil {
            guard let info = getDataUsageInfo(from: pointer!) else {
                pointer = pointer!.pointee.ifa_next
                continue
            }
            dataUsageInfo.updateInfoByAdding(info: info)
            pointer = pointer!.pointee.ifa_next
        }

        freeifaddrs(interfaceAddresses)

        return dataUsageInfo
    }

    private class func getDataUsageInfo(from infoPointer: UnsafeMutablePointer<ifaddrs>) -> DataUsageInfo? {
        let pointer = infoPointer

        let name: String! = String(cString: infoPointer.pointee.ifa_name)
        let addr = pointer.pointee.ifa_addr.pointee
        guard addr.sa_family == UInt8(AF_LINK) else { return nil }

        return dataUsageInfo(from: pointer, name: name)
    }

    private class func dataUsageInfo(from pointer: UnsafeMutablePointer<ifaddrs>, name: String) -> DataUsageInfo {
        var networkData: UnsafeMutablePointer<if_data>? = nil
        var dataUsageInfo = DataUsageInfo()

        if name.hasPrefix(wifiInterfacePrefix) {
            networkData = unsafeBitCast(pointer.pointee.ifa_data, to: UnsafeMutablePointer<if_data>.self)
            dataUsageInfo.wifiSent += UInt64(networkData?.pointee.ifi_obytes ?? 0)
            dataUsageInfo.wifiReceived += UInt64(networkData?.pointee.ifi_ibytes ?? 0)
        } else if name.hasPrefix(wwanInterfacePrefix) {
            networkData = unsafeBitCast(pointer.pointee.ifa_data, to: UnsafeMutablePointer<if_data>.self)
            dataUsageInfo.wirelessWanDataSent += UInt64(networkData?.pointee.ifi_obytes ?? 0)
            dataUsageInfo.wirelessWanDataReceived += UInt64(networkData?.pointee.ifi_ibytes ?? 0)
        }

        return dataUsageInfo
    }
}