在 iOS 12 中检查设备是否连接到 VPN

Question

我正在使用下面的代码（Swift 3 和 Swift 4 兼容）检查 iOS 设备上的 VPN 连接，但在 iOS 12 中无法正常工作以上。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
}

感谢您的帮助。

Answer 1

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 2

键列表自 iOS 12 和 iOS 13

以来已更改

已添加 2 个密钥

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 3

就我而言，我收到了 ipsec4 并且该应用无法识别 VPN。因此我想出了一些不同的东西：

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()

我也写了一篇关于它的小博客posthere

在 iOS 12 中检查设备是否连接到 VPN

Check whether device is connected to a VPN in iOS 12

ios

swift

vpn