fileprivate func updateCurrentVPN(withServer server: Server, completion: ((Bool) -> Void)?) {

    let passwordRef = KeychainWrapper.standard.dataRef(forKey: self.account.username)
    let secretRef = KeychainWrapper.standard.dataRef(forKey: API.ipsecSecretKey())

    // checking if the strings are correct in a debugger
    let password = KeychainWrapper.standard.string(forKey: self.account.username)
    let secret = KeychainWrapper.standard.string(forKey: API.ipsecSecretKey())

    // VPN
    let manager = NEVPNManager.shared()
    manager.loadFromPreferences { (error) in
        if (error != nil)
        {
            print("Error: ", error.debugDescription)
            completion?(false)
        }
        else
        {
            let prtcl = NEVPNProtocolIPSec()
            prtcl.username = self.account.username
            prtcl.passwordReference = passwordRef
            prtcl.serverAddress = server.host
            prtcl.authenticationMethod = NEVPNIKEAuthenticationMethod.sharedSecret
            prtcl.sharedSecretReference = secretRef
            prtcl.localIdentifier = "Test iOS device"
            prtcl.remoteIdentifier = server.name
            prtcl.useExtendedAuthentication = true
            prtcl.disconnectOnSleep = false

            manager.isEnabled = true
            manager.protocolConfiguration = prtcl
            manager.isOnDemandEnabled = false
            manager.localizedDescription = "MyVPN Configuration"
            manager.saveToPreferences(completionHandler: { (error) in
                if (error != nil)
                {
                    print("Error: ", error.debugDescription)
                    completion?(false)
                }
                else
                {
                    self.serverButton.setTitle(server.name, for: UIControlState.normal)
                    print("VPN prefs saved")
                    completion?(true)
                }
            })
        }
    }

let manager = NEVPNManager.shared()
 do {
    try manager.connection.startVPNTunnel()
 } catch {
    print(error.localizedDescription)
    connectButton.setTitle("da failure :(", for: UIControlState.normal)
 }