Swift에서 인터넷 연결 가능 여부 확인

Swift에서 인터넷 연결 가능 여부 확인

스위프트를 이용하여 인터넷 연결이 가능한지 확인할 수 있는 방법이 있습니까?

이것을 할 수 있는 많은 타사 라이브러리가 있다는 것을 알고 있지만 모두 Objective-C로 작성되어 있습니다.스위프트 대안을 찾고 있습니다.

댓글에 언급된 것처럼 스위프트에서 Objective-C 라이브러리를 사용하는 것이 가능하지만, 저는 좀 더 순수한 스위프트 솔루션을 원했습니다.기존의 Apple Reachability 클래스와 다른 타사 라이브러리는 제가 Swift로 번역하기에는 너무 복잡해 보였습니다.구글에서 좀 더 검색해보니 네트워크 가용성을 확인할 수 있는 간단한 방법을 보여주는 기사를 보게 되었습니다.스위프트로 번역을 시작했습니다.많은 난관에 부딪혔지만 StackOverflow의 Martin R 덕분에 해결할 수 있었고 마침내 Swift에서 실행 가능한 솔루션을 얻었습니다.코드는 여기 있습니다.

import Foundation
import SystemConfiguration

public class Reachability {

    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(sizeofValue(zeroAddress))
        zeroAddress.sin_family = sa_family_t(AF_INET)

        let defaultRouteReachability = withUnsafePointer(&zeroAddress) {
            SCNetworkReachabilityCreateWithAddress(nil, UnsafePointer($0)).takeRetainedValue()
        }

        var flags: SCNetworkReachabilityFlags = 0
        if SCNetworkReachabilityGetFlags(defaultRouteReachability, &flags) == 0 {
            return false
        }

        let isReachable = (flags & UInt32(kSCNetworkFlagsReachable)) != 0
        let needsConnection = (flags & UInt32(kSCNetworkFlagsConnectionRequired)) != 0

        return isReachable && !needsConnection
    }

}

Swift > 3.0의 경우

public class Reachability {
    public func isConnectedToNetwork() -> Bool {
        var zeroAddress = sockaddr_in()
        zeroAddress.sin_len = UInt8(MemoryLayout<sockaddr_in>.size)
        zeroAddress.sin_family = sa_family_t(AF_INET)

        guard let defaultRouteReachability = withUnsafePointer(to: &zeroAddress, {
            $0.withMemoryRebound(to: sockaddr.self, capacity: 1) {
                SCNetworkReachabilityCreateWithAddress(nil, $0)
            }
        }) else {
            return false
        }

        var flags: SCNetworkReachabilityFlags = []
        if !SCNetworkReachabilityGetFlags(defaultRouteReachability, &flags) {
            return false
        }
        if flags.isEmpty {
            return false
        }

        let isReachable = flags.contains(.reachable)
        let needsConnection = flags.contains(.connectionRequired)

        return (isReachable && !needsConnection)
    }
}

이것은 3G와 WiFi 연결에 모두 적합합니다.나는 그것을 나의 GitHub에도 작업 예시와 함께 업로드 했습니다.

Swift 3.1용 (iOS 10.1)

네트워크 유형(즉, WiFi 또는 WWAN)을 구별하고자 하는 경우:

다음을 사용할 수 있습니다.

func checkWiFi() -> Bool {

    let networkStatus = Reachability().connectionStatus()
    switch networkStatus {
    case .Unknown, .Offline:
        return false
    case .Online(.WWAN):
        print("Connected via WWAN")
        return true
    case .Online(.WiFi):
        print("Connected via WiFi")
        return true
    }
}

다음은 네트워크 유형을 구분한 전체 도달 가능성 클래스입니다.

import Foundation
import SystemConfiguration

import UIKit
import SystemConfiguration.CaptiveNetwork

public let ReachabilityStatusChangedNotification = "ReachabilityStatusChangedNotification"

public enum ReachabilityType: CustomStringConvertible {
    case WWAN
    case WiFi

    public var description: String {
        switch self {
        case .WWAN: return "WWAN"
        case .WiFi: return "WiFi"
        }
    }
}

public enum ReachabilityStatus: CustomStringConvertible  {
    case Offline
    case Online(ReachabilityType)
    case Unknown

    public var description: String {
        switch self {
        case .Offline: return "Offline"
        case .Online(let type): return "Online (\(type))"
        case .Unknown: return "Unknown"
        }
    }
}

public class Reachability {

    func connectionStatus() -> ReachabilityStatus {
        var zeroAddress = sockaddr_in()
        zeroAddress.sin_len = UInt8(MemoryLayout.size(ofValue: zeroAddress))
        zeroAddress.sin_family = sa_family_t(AF_INET)

        guard let defaultRouteReachability = (withUnsafePointer(to: &zeroAddress) {
            $0.withMemoryRebound(to: sockaddr.self, capacity: 1) { zeroSockAddress in
                SCNetworkReachabilityCreateWithAddress(nil, zeroSockAddress)
            }
        }) else {
           return .Unknown
        }

        var flags : SCNetworkReachabilityFlags = []
        if !SCNetworkReachabilityGetFlags(defaultRouteReachability, &flags) {
            return .Unknown
        }

        return ReachabilityStatus(reachabilityFlags: flags)
    }

    func monitorReachabilityChanges() {
        let host = "google.com"
        var context = SCNetworkReachabilityContext(version: 0, info: nil, retain: nil, release: nil, copyDescription: nil)
        let reachability = SCNetworkReachabilityCreateWithName(nil, host)!

        SCNetworkReachabilitySetCallback(reachability, { (_, flags, _) in
            let status = ReachabilityStatus(reachabilityFlags: flags)

            NotificationCenter.default.post(name: NSNotification.Name(rawValue: ReachabilityStatusChangedNotification), object: nil, userInfo: ["Status": status.description])}, &context)

        SCNetworkReachabilityScheduleWithRunLoop(reachability, CFRunLoopGetMain(), CFRunLoopMode.commonModes.rawValue)
    }
}

extension ReachabilityStatus {

    public init(reachabilityFlags flags: SCNetworkReachabilityFlags) {
        let connectionRequired = flags.contains(.connectionRequired)
        let isReachable = flags.contains(.reachable)
        let isWWAN = flags.contains(.isWWAN)

        if !connectionRequired && isReachable {
            if isWWAN {
                self = .Online(.WWAN)
            } else {
                self = .Online(.WiFi)
            }
        } else {
            self =  .Offline
        }
    }
}

내가 더 좋은 방법을...

이 코드로 클래스를 만들어야 합니다.

 import Foundation
 public class Reachability {

class func isConnectedToNetwork()->Bool{

    var Status:Bool = false
    let url = NSURL(string: "http://google.com/")
    let request = NSMutableURLRequest(URL: url!)
    request.HTTPMethod = "HEAD"
    request.cachePolicy = NSURLRequestCachePolicy.ReloadIgnoringLocalAndRemoteCacheData
    request.timeoutInterval = 10.0

    var response: NSURLResponse?

    var data = NSURLConnection.sendSynchronousRequest(request, returningResponse: &response, error: nil) as NSData?

    if let httpResponse = response as? NSHTTPURLResponse {
        if httpResponse.statusCode == 200 {
            Status = true
        }
    }

    return Status
  }
}

그런 다음 이 코드를 사용하여 프로젝트의 어느 곳에서나 인터넷 연결을 확인할 수 있습니다.

if Reachability.isConnectedToNetwork() == true {
     println("Internet connection OK")
} else {
     println("Internet connection FAILED")
}

아주 쉽습니다!

*이 방법은 Vikram Pote의 답변을 기반으로 합니다!

SWIFT 3: 와이파이 및 인터넷 연결 확인:

import Foundation
import SystemConfiguration

public class Reachability {
    public func isConnectedToNetwork() -> Bool {
        var zeroAddress = sockaddr_in()
        zeroAddress.sin_len = UInt8(MemoryLayout<sockaddr_in>.size)
        zeroAddress.sin_family = sa_family_t(AF_INET)

        guard let defaultRouteReachability = withUnsafePointer(to: &zeroAddress, {
            $0.withMemoryRebound(to: sockaddr.self, capacity: 1) {
                SCNetworkReachabilityCreateWithAddress(nil, $0)
            }
        }) else {
            return false
        }

        var flags: SCNetworkReachabilityFlags = []
        if !SCNetworkReachabilityGetFlags(defaultRouteReachability, &flags) {
            return false
        }

        let isReachable = flags.contains(.reachable)
        let needsConnection = flags.contains(.connectionRequired)

        return (isReachable && !needsConnection)
    }
}

사용방법:

if Reachability.isConnectedToNetwork() == true {
    print("Connected to the internet")
    //  Do something
} else {
    print("No internet connection")
    //  Do something
}

sendSynchronousRequest가 더 이상 사용되지 않기 때문에 시도했지만 응답이 끝나기 전에 'return Status'가 호출되었습니다.

이 답변은 잘 먹히나요, 스위프트와 인터넷 연결이 되는지 확인해보세요.

어쨌든 내가 시도한 것은 다음과 같습니다.

import Foundation

public class Reachability {

    class func isConnectedToNetwork()->Bool{

        var Status:Bool = false
        let url = NSURL(string: "http://google.com/")
        let request = NSMutableURLRequest(URL: url!)
        request.HTTPMethod = "HEAD"
        request.cachePolicy = NSURLRequestCachePolicy.ReloadIgnoringLocalAndRemoteCacheData
        request.timeoutInterval = 10.0
        let session = NSURLSession.sharedSession()

        session.dataTaskWithRequest(request, completionHandler: {(data, response, error) in
            print("data \(data)")
            print("response \(response)")
            print("error \(error)")

            if let httpResponse = response as? NSHTTPURLResponse {
                print("httpResponse.statusCode \(httpResponse.statusCode)")
                if httpResponse.statusCode == 200 {
                    Status = true
                }
            }

        }).resume()


        return Status
    }
}

아래 답변을 사용할 수도 있습니다.

    func checkInternet(flag:Bool, completionHandler:(internet:Bool) -> Void)
    {
      UIApplication.sharedApplication().networkActivityIndicatorVisible = true

      let url = NSURL(string: "http://www.google.com/")
      let request = NSMutableURLRequest(URL: url!)

      request.HTTPMethod = "HEAD"
      request.cachePolicy = NSURLRequestCachePolicy.ReloadIgnoringLocalAndRemoteCacheData
      request.timeoutInterval = 10.0

      NSURLConnection.sendAsynchronousRequest(request, queue:NSOperationQueue.mainQueue(), completionHandler:
      {(response: NSURLResponse!, data: NSData!, error: NSError!) -> Void in

        UIApplication.sharedApplication().networkActivityIndicatorVisible = false

        let rsp = response as NSHTTPURLResponse?

        completionHandler(internet:rsp?.statusCode == 200)
    })
    }

     func yourMethod()
    {
    self.checkInternet(false, completionHandler:
    {(internet:Bool) -> Void in

        if (internet)
        {
            // "Internet" mean Google
        }
        else
        {
            // No "Internet" no Google
        }
    })
   }

Swift 5의 경우:

import Network
let monitor = NWPathMonitor()

func checkInterwebs() -> Bool {
    var status = false
    monitor.pathUpdateHandler = { path in
        if path.status == .satisfied {
            status = true  // online
        }
    }
    return status
}

스위프트 4

if isInternetAvailable() {
    print("if called Internet Connectivity success \(isInternetAvailable())");
} else {
    print("else called Internet Connectivity success \(isInternetAvailable())");
}

func isInternetAvailable() -> 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.contains(.reachable)
   let needsConnection = flags.contains(.connectionRequired)
   //   print(isReachable && !needsConnection)
   return (isReachable && !needsConnection)
}

프로젝트에서 Alamofire를 사용하는 경우 다음 샘플 기능을 사용할 수 있습니다.

import Alamofire

class Network {

    func isConnected(_ complition: @escaping(Bool) -> Void) {
        let retVal = NetworkReachabilityManager()!.isReachable
        complition(retVal)
    }

}

연결되어 있는지 여부만 알고 Swift를 사용하는 경우UI:

서비스:

import Foundation
import Network

class ConnectionService: ObservableObject {
    @Published var connected: Bool = false
    
    private var monitor: NWPathMonitor
    
    init() {
        monitor = NWPathMonitor()

        monitor.pathUpdateHandler = { [weak self] path in
            switch path.status {
            case .satisfied:
                self?.connected = true
            case .unsatisfied, .requiresConnection:
                self?.connected = false
            @unknown default:
                self?.connected = false
            }
        }

        monitor.start(queue: DispatchQueue.main)
    }
}

용도:

// step 1: add in your App struct
@StateObject var internet = ConnectionService() 

// step 2: add this modifier to your top level view
.environmentObject(internet) 

// step 3: add this in any child view
@EnvironmentObject var internet: ConnectionService 

// step 4: example usage in that child view
Text("internet: \(internet.connected ? "true" : "false")") 

SWIFT 3 : 3G & Wi-Fi 연결 확인

DispatchQueue.main.async {
        let url = URL(string: "https://www.google.com")!
        let request = URLRequest(url: url)

        let task = URLSession.shared.dataTask(with: request) {data, response, error in

            if error != nil {
                // do something here...
                print("Internet Connection not Available!")
            }
            else if let httpResponse = response as? HTTPURLResponse {
                if httpResponse.statusCode == 200 {
                    // do something here...
                    print("Internet Connection OK")
                }
                print("statusCode: \(httpResponse.statusCode)")
            }

        }
        task.resume()
}

언급URL : https://stackoverflow.com/questions/25398664/check-for-internet-connection-availability-in-swift