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86 lines
2.6 KiB
86 lines
2.6 KiB
6 years ago
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// Copyright © 2015 Abhishek Banthia
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import Cocoa
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import SystemConfiguration
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let reachabilityStatusChangedNotification = "ReachabilityStatusChangedNotification"
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enum ReachabilityType: CustomStringConvertible {
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case wwan
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case wiFi
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var description: String {
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switch self {
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case .wwan: return "WWAN"
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case .wiFi: return "WiFi"
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}
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}
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}
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enum ReachabilityStatus: CustomStringConvertible {
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case offline
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case online(ReachabilityType)
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case unknown
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var description: String {
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switch self {
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case .offline: return "Offline"
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case let .online(type): return "Online (\(type))"
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case .unknown: return "Unknown"
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}
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}
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}
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open class Reach {
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func connectionStatus() -> ReachabilityStatus {
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var zeroAddress = sockaddr_in()
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zeroAddress.sin_len = UInt8(MemoryLayout.size(ofValue: zeroAddress))
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zeroAddress.sin_family = sa_family_t(AF_INET)
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guard let defaultRouteReachability = withUnsafePointer(to: &zeroAddress, {
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$0.withMemoryRebound(to: sockaddr.self, capacity: 1) {
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SCNetworkReachabilityCreateWithAddress(kCFAllocatorDefault, $0)
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}
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}) else {
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return .unknown
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}
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var flags: SCNetworkReachabilityFlags = []
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if !SCNetworkReachabilityGetFlags(defaultRouteReachability, &flags) {
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return .unknown
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}
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return ReachabilityStatus(reachabilityFlags: flags)
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}
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func monitorReachabilityChanges() {
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let host = "google.com"
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var context = SCNetworkReachabilityContext(version: 0, info: nil, retain: nil, release: nil, copyDescription: nil)
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let reachability = SCNetworkReachabilityCreateWithName(nil, host)!
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SCNetworkReachabilitySetCallback(reachability, { _, flags, _ in
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let status = ReachabilityStatus(reachabilityFlags: flags)
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NotificationCenter.default.post(name: Notification.Name(rawValue: reachabilityStatusChangedNotification),
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object: nil,
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userInfo: ["Status": status.description])
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}, &context)
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SCNetworkReachabilityScheduleWithRunLoop(reachability, CFRunLoopGetMain(), CFRunLoopMode.commonModes.rawValue)
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}
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}
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extension ReachabilityStatus {
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fileprivate init(reachabilityFlags flags: SCNetworkReachabilityFlags) {
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let connectionRequired = flags.contains(.connectionRequired)
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let isReachable = flags.contains(.reachable)
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if !connectionRequired && isReachable {
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self = .online(.wiFi)
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} else {
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self = .offline
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}
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}
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}
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