利用NetworkExtension庫配置VPN

VPN簡單說就是連接區域網的一個通道。Ios8之後蘋果增加了一個VPN的介面NEVPNManager，它可以方便的添加VPN連接。

首先在你的Xcode內，TARGETS->Capabilities->打開persion VPN

在項目中添加NetWorkExtension庫

引入頭文件<NetworkExtension/NEVPNManager.h>以後

//創建管理對象

NEVPNManager *vpnManager = [NEVPNManager sharedManager];

從設置裡面載入VPN

  //給VPN配置信息

        [manager loadFromPreferencesWithCompletionHandler:^(NSError * _Nullable error) {

            NEVPNProtocolIPSec *set =(NEVPNProtocolIPSec*) self.manager.protocolConfiguration;

            if(!set)

            {

                set = [[NEVPNProtocolIPSec alloc]init];

            }

            set.username = @"username";//VPN用戶名

            set.passwordReference = [@"password" dataUsingEncoding:NSUTF8StringEncoding];//VPN密碼

            set.serverAddress = @"ip";//ip地址

            set.sharedSecretReference = [@"SecretReference"  dataUsingEncoding:NSUTF8StringEncoding];

//            NEVPNIKEAuthenticationMethodCertificate:使用證書和私鑰作為身份驗證憑據。   

//            NEVPNIKEAuthenticationMethodSharedSecret:使用共用密鑰的身份驗證憑據

            set.authenticationMethod = NEVPNIKEAuthenticationMethodSharedSecret;

            set.useExtendedAuthentication = YES;//這是一個標誌指示如果擴展驗證將協商

            set.disconnectOnSleep = NO;//這個布爾表示是否VPN連接時,必須斷開設備睡覺

            self.manager.protocolConfiguration = set;

            self.manager.localizedDescription = @"hrjd";//VPN的描述

            [self.manager setOnDemandEnabled:YES];

            [self.manager saveToPreferencesWithCompletionHandler:^(NSError * _Nullable error) {

                NSError * error1 ;

//連接VPN

                [manager.connection startVPNTunnelAndReturnError:&error1];

                if (error) {

                    NSLog(@"VPN連接失敗");

                }else{

                    NSLog(@"VPN連接成功");

                }

            }];

        }];

[vpnManager.connection stopVPNTunnel];

//斷開VPN