Question

我想以编程方式在iOS中更改/添加我的iPhone设备连接WiFi的DNS服务器吗？

Google公共DNS IP地址（IPv4）如下： 8.8.8.8 8.8.4.4

我想以编程方式更改/添加它，就像在附加的屏幕截图中一样。

请帮忙。我可以在Objective-c或Swift中管理它。在Objective-c中对我更有帮助。提前谢谢。

连接Wi-Fi的虚拟/旧DNS服务器： -

连接的Wi-Fi所需的DNS服务器： -

Answer 1

查看Network Extensions类。使用NETunnelProviderManager课程，您可以使用onDemandRules设置NEEvaluateConnectionRule。 NEEvaluateConnectionRule constructor可以将带有顶级域名（即["*.com", "*.net", "*.org", "*.io"]）的通配符列表作为域名，并使用NEEvaluateConnectionRuleAction.connectIfNeeded作为操作。将您创建的onDemandRules的NEEvaluateConnectionRule设置为所有tlds作为域。然后创建NEOnDemandRuleEvaluateConnection并将其connectionRules设置为使用所有顶级域创建的NEEvaluateConnectionRule，并将其interfaceTypeMatch设置为NEOnDemandRuleInterfaceType.any。将NETunnelProviderManager.onDemandRules设置为以此方式创建的NEOnDemandRuleEvaluateConnection。如果您如上所述创建了NETunnelProviderManager和load it以及save it，则可以使用NETunnelProviderManager.isEnabled和NETunnelProviderManager.isOnDemandEnabled属性打开和关闭它。< / p>

这是一个完全相同的示例类。

import Foundation
import NetworkExtension

public class VPNConnect {
    private static let vpnDescription = "DNS OnDemand to GoogleDNS"
    private static let vpnServerDescription = "OnDemand DNS to GoogleDNS"

    public var manager:NETunnelProviderManager = NETunnelProviderManager()
    public var dnsEndpoint1:String = "8.8.8.8"
    public var dnsEndpoint2:String = "8.8.4.4"

    public var connected:Bool {
        get {
            return self.manager.isOnDemandEnabled
        }
        set {
            if newValue != self.connected {
                update(
                    body: {
                        self.manager.isEnabled = newValue
                        self.manager.isOnDemandEnabled = newValue

                    },
                    complete: {
                        if newValue {
                            do {
                                try (self.manager.connection as? NETunnelProviderSession)?.startVPNTunnel(options: nil)
                            } catch let err as NSError {
                                NSLog("\(err.localizedDescription)")
                            }
                        } else {
                            (self.manager.connection as? NETunnelProviderSession)?.stopVPNTunnel()
                        }
                    }
                )
            }
        }
    }

    public init() {
        refreshManager()
    }

    public func refreshManager() -> Void {
        NETunnelProviderManager.loadAllFromPreferences(completionHandler: { (managers, error) in
            if nil == error {
                if let managers = managers {
                    for manager in managers {
                        if manager.localizedDescription == VPNConnect.vpnDescription {
                            self.manager = manager
                            return
                        }
                    }
                }
            }
            self.setPreferences()
        })
    }

    private func update(body: @escaping ()->Void, complete: @escaping ()->Void) {
        manager.loadFromPreferences { error in
            if (error != nil) {
                NSLog("Load error: \(String(describing: error?.localizedDescription))")
                return
            }            
            body()
            self.manager.saveToPreferences { (error) in
                if nil != error {
                    NSLog("vpn_connect: save error \(error!)")
                } else {
                    complete()
                }
            }
        }
    }

    private func setPreferences() {
        self.manager.localizedDescription = VPNConnect.vpnDescription        
        let proto = NETunnelProviderProtocol()
        proto.providerBundleIdentifier = "com.popmedic.vpntunnel.provider"
        proto.serverAddress = VPNConnect.vpnServerDescription
        self.manager.protocolConfiguration = proto
        // TLDList is a struct I created in its own swift file that has an array of all top level domains
        let evaluationRule = NEEvaluateConnectionRule(matchDomains: TLDList.tlds, 
                                                         andAction: NEEvaluateConnectionRuleAction.connectIfNeeded)
        evaluationRule.useDNSServers = [self.dnsEndpoint1, self.dnsEndpoint2]
        let onDemandRule = NEOnDemandRuleEvaluateConnection()
        onDemandRule.connectionRules = [evaluationRule]
        onDemandRule.interfaceTypeMatch = NEOnDemandRuleInterfaceType.any
        self.manager.onDemandRules = [onDemandRule]
    }
}

请注意，您必须打开网络扩展功能，然后会出现一个对话框，告诉用户您正在打开VPN连接，但当状态栏中没有[VPN]图标时连接已打开，因为我们没有设置vpn，只使用按需规则。

Here is the TLDList class I used.

尽可能多地讨厌谷歌，也许将此用于您设置的DNS ... Quad9

如何以编程方式在iOS中更改/添加连接WiFi的DNS服务器？

1 个答案: