iPhone Data Usage Tracking/Monitoring

Question

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 compa

Answer 1

Sorry for same answer again.

but I found that UInt32 is not enough, so it crashes when it became too big.

I just changed UInt32 to UInt64 and it works fine.

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? = 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) -> 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, name: String) -> DataUsageInfo {
        var networkData: UnsafeMutablePointer? = nil
        var dataUsageInfo = DataUsageInfo()

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

        return dataUsageInfo
    }
}