CODEWITHSUNDEEP
swiftnetwork-programmingwifi
HenryRootTwo
HenryRootTwo

Reputation: 2612

Swift: Check if iOS is connected to wifi without internet

I need to check if an iPhone is connected to a wifi network that won't provide an internet connection. As far as I can see, Reachability et al check for an internet connection, which is not what I need.

The device I am connecting to is a proprietary device that has no internet functionality. I need to know whether I am connected to it or not via wifi.

Upvotes: 0

Views: 1026

Answers (1)

Bola Ibrahim
Bola Ibrahim

Reputation: 780

// MARK: - Network Checker
func isConnectedToNetwork() -> Bool {
    var zeroAddress = sockaddr_in()
    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()
    if !SCNetworkReachabilityGetFlags(defaultRouteReachability!, &flags) {
        return false
    }
    let isReachable = (flags.rawValue & UInt32(kSCNetworkFlagsReachable)) != 0
    let needsConnection = (flags.rawValue & UInt32(kSCNetworkFlagsConnectionRequired)) != 0
    return (isReachable && !needsConnection)
}

Upvotes: 1

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