Question

我正在使用下面的代码（兼容Swift 3和Swift 4）检查iOS设备上的VPN连接，该设备在iOS 12及更高版本中不起作用。如何检查iOS 12中的VPN连接

func isVPNConnected() -> Bool {
    let cfDict = CFNetworkCopySystemProxySettings()
    let nsDict = cfDict!.takeRetainedValue() as NSDictionary
    let keys = nsDict["__SCOPED__"] as! NSDictionary

    for key: String in keys.allKeys as! [String] {
        if (key == "tap" || key == "tun" || key == "ppp" || key == "ipsec" || key == "ipsec0") {
            return true
        }
    }
    return false
}

谢谢您的帮助。

Answer 1

自iOS 12和iOS 13起，键列表已更改

已添加2个键

utun1和utun2

所以函数应该是：

static func isConnectedToVPN() -> Bool {

    let cfDict = CFNetworkCopySystemProxySettings()
    let nsDict = cfDict!.takeRetainedValue() as NSDictionary
    let keys = nsDict["__SCOPED__"] as! NSDictionary
    for key: String in keys.allKeys as! [String] {
           if (key == "tap" || key == "tun" || key == "ppp" || key == "ipsec" || key == "ipsec0" || key == "utun1" || key == "utun2") {
               return true
           }
       }
       return false
}

Answer 2

尝试将密钥“ utun1”添加到您的支票中（或以“ utun”为前缀，后跟数字）。

for key: String in keys.allKeys as! [String] {
    if (key == "tap" || key == "tun" || key == "ppp" || key == "ipsec" || key == "ipsec0" || key == "utun1") {
        return true
    }
}
return false

Answer 3

就我而言，我收到了ipsec4，但该应用程序无法识别VPN。因此，我想出了一些不同的方法：

struct VpnChecker {

    private static let vpnProtocolsKeysIdentifiers = [
        "tap", "tun", "ppp", "ipsec", "utun"
    ]

    static func isVpnActive() -> Bool {
        guard let cfDict = CFNetworkCopySystemProxySettings() else { return false }
        let nsDict = cfDict.takeRetainedValue() as NSDictionary
        guard let keys = nsDict["__SCOPED__"] as? NSDictionary,
            let allKeys = keys.allKeys as? [String] else { return false }

        // Checking for tunneling protocols in the keys
        for key in allKeys {
            for protocolId in vpnProtocolsKeysIdentifiers
                where key.starts(with: protocolId) {
                // I use start(with:), so I can cover also `ipsec4`, `ppp0`, `utun0` etc...
                return true
            }
        }
        return false
    }
}

用法：VpnChecker.isVpnActive()

我还写了一篇有关here

的博客文章

检查设备是否已连接到iOS 12中的VPN

3 个答案: