ios - NEVPNManager 在 Swift 中连接到 VPN

Question

我无法找到关于如何执行此操作的明确答案，所以这就是我创建此线程的原因。
我正在开发一个 Swift 应用程序 (Swift 2)，我想在其中使用一个函数连接 VPN 服务器。所以我想创建一个

func connect() {
    //Handle the connection to the VPN 
}

我收到了这个https://gist.github.com/matthijsotterloo/cedf256f7f1c2a9a8f624481b7083afd来自制作 VPN 的开发人员的文件(当然我替换了证书、 key 、url 和登录名。现在我的问题是如何在函数中连接到这个 VPN 服务器？我已经发现我必须使用 NEVPNManager 但我可以真正了解如何构建它。

希望有人能帮助我。

谢谢!

Answer 1

这有点令人困惑，但您使用所需参数设置配置，然后将该配置保存到 NEVPNManager。之后开始 VPN 隧道。

所以你会有这样的东西:

    NEVPNManager.sharedManager().loadFromPreferencesWithCompletionHandler { error in
        // setup the config:
        let password = vpnAccount!.vpnPassword          
        let vpnhost = vpnAccount!.vpnHost
        let p = NEVPNProtocolIKEv2()
        p.username = username
        p.localIdentifier = username
        p.serverAddress = vpnhost
        p.remoteIdentifier = vpnhost
        p.authenticationMethod = .None
        p.passwordReference = passwordRef
        p.useExtendedAuthentication = true
        p.serverCertificateIssuerCommonName = vpnhost
        p.disconnectOnSleep = false


        var rules = [NEOnDemandRule]()
        let rule = NEOnDemandRuleConnect()
        rule.interfaceTypeMatch = .Any
        rules.append(rule)

        NEVPNManager.sharedManager().localizedDescription = "My VPN"
        NEVPNManager.sharedManager().protocolConfiguration = p
        NEVPNManager.sharedManager().onDemandRules = rules
        NEVPNManager.sharedManager().onDemandEnabled = true
        NEVPNManager.sharedManager().enabled = true
        NEVPNManager.sharedManager().saveToPreferencesWithCompletionHandler { error in
            guard error == nil else {
                print("NEVPNManager.saveToPreferencesWithCompletionHandler failed: \(error!.localizedDescription)")
                return
            }
            VPNManager.sharedManager.startVPNTunnel()
        }
     }

正确嵌套完成处理程序虽然不明显但很重要:

    loadFromPreferencesWithCompletionHandler{ 
        ...
        saveToPreferencesWithCompletionHandler{ 
            startVPNTunnel 
        }
    }

passwordRef 是:

                let password = vpnAccount!.vpnPassword
                vpnAccount!.setPersistenRef(username, password: password!)
                let passwordRef = vpnAccount!.persistentRef

vpnAccount.persistentRef 是:

class func persistentRef(_ key: String) -> Data? {
    let query: [AnyHashable: Any] = [
        kSecClass as AnyHashable: kSecClassGenericPassword,
        kSecAttrGeneric as AnyHashable: key,
        kSecAttrAccount as AnyHashable: key,
        kSecAttrAccessible as AnyHashable: kSecAttrAccessibleAlways,
        kSecMatchLimit as AnyHashable: kSecMatchLimitOne,
        kSecAttrService as AnyHashable: Bundle.main.bundleIdentifier!,
        kSecReturnPersistentRef as AnyHashable: kCFBooleanTrue
    ]

    var secItem: AnyObject?
    let result = SecItemCopyMatching(query as CFDictionary, &secItem)
    if result != errSecSuccess {
        return nil
    }

    return secItem as? Data
}

我不记得细节但似乎记得上面关于创建 NEVPNManager 正在寻找的引用非常重要。