IsConnected.swift

   // Simple check if connected to internet
    func isConnected() -> Bool {
        // we need SCNetworkReachability object
        guard let reachability = SCNetworkReachabilityCreateWithName(nil, "https://inloop-contacts.appspot.com/_ah/api/contactendpoint/v1/contact") else { return false }

        // and flags
        var flags = SCNetworkReachabilityFlags()
        
        // read the "flags" into flags (via SCNetworkReachabilityGetFlags)
        SCNetworkReachabilityGetFlags(reachability, &flags)
        
        if !isNetworkReachable(with: flags) {
            // Device doesn't have internet connection
            return false
        }
        
        if flags.contains(.isWWAN) {
            // On mobile data plan
            return true
        }
        
        // on Wifi
        return true
    }
    
    private func isNetworkReachable(with flags: SCNetworkReachabilityFlags) -> Bool {
        let isReachable = flags.contains(.reachable)
        let needsConnection = flags.contains(.connectionRequired)
        let canConnectAutomatically = flags.contains(.connectionOnDemand) || flags.contains(.connectionOnTraffic)
        let canConnectWithoutUserInteraction = canConnectAutomatically && !flags.contains(.interventionRequired)
        
        return isReachable && (!needsConnection || canConnectWithoutUserInteraction)
    }