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 class func isConnectedToNetwork() -> Bool {
 

 var zeroAddress = sockaddr_in(sin_len: 0, sin_family: 0, sin_port: 0, 
sin_addr: in_addr(s_addr: 0), sin_zero: (0, 0, 0, 0, 0, 0, 0, 0))
 zeroAddress.sin_len = UInt8(MemoryLayout.size(ofValue: zeroAddress))
 zeroAddress.sin_family = sa_family_t(AF_INET)
 
 let defaultRouteReachability = withUnsafePointer(to: &zeroAddress) {
 $0.withMemoryRebound(to: sockaddr.self, capacity: 1) {zeroSockAddress in
 SCNetworkReachabilityCreateWithAddress(nil, zeroSockAddress)
 }
 }
 
 var flags: SCNetworkReachabilityFlags = SCNetworkReachabilityFlags(rawValue: 0)
 if SCNetworkReachabilityGetFlags(defaultRouteReachability!, &flags) == false {
 return false
 }
 
 /* Only Working for WIFI
 let isReachable = flags == .reachable
 let needsConnection = flags == .connectionRequired
 
 return isReachable && !needsConnection
 */
 
 // Working for Cellular and WIFI
 let isReachable = (flags.rawValue & UInt32(kSCNetworkFlagsReachable)) != 0
 let needsConnection = (flags.rawValue & UInt32(kSCNetworkFlagsConnectionRequired)) != 0
 let ret = (isReachable && !needsConnection)
 
 return ret
 
 }