withUnsafePointer in Swift 2

Question

I\'m trying to check if the user has internet connection, and part of the process involves invoking withUnsafePointer. In Swift 1.x, I was able to use:

Answer 1

Swift3 use this

         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
        }