/*
更新了EMQ连接方式

using System.Collections.Generic;
using System;
using MQTTnet.Client;
using System.Threading.Tasks;
using Shared;
using Shared.SimpleControl;
using MQTTnet;
using System.Text;
using System.Security.Cryptography;
using System.IO;

namespace SmartHome
{
    public static class MqttCommon
    {
        static string mqttEncryptKey = "";
        static string checkGatewayTopicBase64 = "";
        static RemoteMACInfo CurRemoteMACInfo = null;

        /// <summary>
        /// 手机标识
        /// </summary>
        static Guid currentGuid = Guid.NewGuid ();

        /// <summary>
        /// 外网的MQTT是否正在连接
        /// </summary>
        static object isConnecting = false.ToString ();
        /// <summary>
        /// 远程MqttClient
        /// </summary>
        public static IMqttClient RemoteMqttClient;

        static bool thisShowTip = true;

        public static async System.Threading.Tasks.Task Close (bool RemoveRemoteMqttClient = false)
        {
            try {
                if (RemoteMqttClient != null) {
                    //thisShowTip = true;
                    await RemoteMqttClient.DisconnectAsync ();
                }
                if (RemoveRemoteMqttClient) {
                    RemoteMqttClient = null;
                }
                CommonPage.IsRemote = false;
            } catch { }
        }

        static DateTime dateTime = DateTime.MinValue;

        /// <summary>
        /// 启动远程Mqtt
        /// </summary>
        public static async System.Threading.Tasks.Task StartCloudMqtt ()
        {
            try {
                MainPage.tipTime += " Start remote step.1 : " + DateTime.Now.ToString ("yyyy-MM-dd hh:mm:ss:ffff") + ";\n";

                Application.RunOnMainThread (() => {
                    if (5 < (DateTime.Now - dateTime).TotalSeconds) {
                        return;
                    }
                    //MainPage.Loading.Start (Language.StringByID (Shared.SimpleControl.R.MyInternationalizationString.Connecting));
                    dateTime = DateTime.Now;
                });
                if (!MainPage.LoginUser.IsLogin) {
                    isConnecting = false.ToString ();
                    return;
                }
                while (isConnecting.ToString () == true.ToString ()) {
                    if (5 < (DateTime.Now - dateTime).TotalSeconds) {
                        break;
                    }
                    await System.Threading.Tasks.Task.Delay (500);
                }
                lock (isConnecting) {
                    Console.WriteLine ("mqtt link thread");
                    if (isConnecting.ToString () == true.ToString ()) {
                        return;
                    }
                    isConnecting = true.ToString ();
                    if (RemoteMqttClient != null && RemoteMqttClient.IsConnected) {
                        return;
                    }

                    new System.Threading.Thread (async () => {
                        try {
                            MainPage.tipTime += " Start remote step.2 : " + DateTime.Now.ToString ("yyyy-MM-dd hh:mm:ss:ffff") + ";\n";
                            //断开后重新链接需要重新登录获取连接的密码
                            var requestObj = new LoginObj () { Account = MainPage.LoginUser.AccountString.ToLower (), Password = MainPage.LoginUser.Password, Company = MainPage.SoftSmsType };
                            var requestJson = Newtonsoft.Json.JsonConvert.SerializeObject (requestObj);
                            var tempResult = MainPage.RequestHttps ("Login", requestJson, false);
                            if (tempResult == null) {
                                Application.RunOnMainThread (() => {
                                    MainPage.Loading.Hide ();
                                    Shared.SimpleControl.Phone.UserMiddle.LinkStatusTip.BackgroundColor = SkinStyle.Current.DelColor;
                                });
                                return;
                            }
                            var responsePack = tempResult.ResponseData;
                            var dictrionaryResult = Newtonsoft.Json.JsonConvert.DeserializeObject<Dictionary<string, object>> (tempResult.ResponseData.ToString ());
                            var mqttRequestPar = Newtonsoft.Json.JsonConvert.DeserializeObject<UserLoginRes> (tempResult.ResponseData.ToString ());
                            //还有种情况是同一个ID 有多个设备用这个id连接（会导致中断）
                            //mqttEncryptKey = dictrionaryResult ["HdlOnMqttKey"]?.ToString ();
                            var url = dictrionaryResult ["ConnectMqttBrokerLoadSubDomain"]?.ToString ();
                            var clientId = dictrionaryResult ["ConnectMqttClientId"]?.ToString ();
                            var username = dictrionaryResult ["ConnectMqttBrokerUserName"]?.ToString ();
                            var passwordRemote = dictrionaryResult ["ConnectMqttBrokerPwd"]?.ToString ();

                            if (RemoteMqttClient == null) {
                                var requestObj3 = new GatewayByRegionListObj () { RegionID = UserConfig.Instance.CurrentRegion.RegionID };
                                Console.WriteLine ("Remote mqtt get Region ID : " + UserConfig.Instance.CurrentRegion.RegionID);
                                var requestJson3 = Newtonsoft.Json.JsonConvert.SerializeObject (requestObj3);
                                var revertObj3 = MainPage.RequestHttps ("GatewayByRegionList", requestJson3, true, false);
                                if (revertObj3.StateCode == "SUCCESS") {
                                    var responseDataObj = Newtonsoft.Json.JsonConvert.DeserializeObject<List<GatewayRes>> (revertObj3.ResponseData.ToString ());
                                    var gatewayList = responseDataObj;
                                    if (gatewayList != null && gatewayList.Count > 0) {
                                        UserConfig.Instance.CurrentRegion.MAC = gatewayList [0].MAC;
                                        UserConfig.Instance.SaveUserConfig ();
                                        Console.WriteLine ("Remote mqtt get Region MAC : " + gatewayList [0].MAC);
                                    }
                                } else {
                                    Console.WriteLine ("Remote mqtt get Region MAC Erorr !!");
                                }

                                //(2)创建Mqtt客户端
                                RemoteMqttClient = new MqttFactory ().CreateMqttClient ();
                                //(3)当[连接云端的Mqtt成功后]或者[以及后面App通过云端Mqtt转发数据给网关成功后],处理接收到云端数据包响应时在mqttServerClient_ApplicationMessageReceived这个方法处理
                                RemoteMqttClient.UseApplicationMessageReceivedHandler (async e => {
                                    if (isConnecting.ToString () == true.ToString ())
                                        isConnecting = false.ToString ();
                                    var aesDecryptTopic = e.ApplicationMessage.Topic;
                                    var aesDecryptPayload = e.ApplicationMessage.Payload;
                                    Console.WriteLine ("Topic={0}", aesDecryptTopic);

                                    if (aesDecryptTopic == $"NotifyBusGateWayInfoChagne/{CurRemoteMACInfo.md5_mac_string}") {//网关上线，需要更新aeskey
                                                                                                                             //----第二步：读取账号下面的网关列表
                                        var gatewayListUrl = @"https://developer.hdlcontrol.com/Center/Center/GetGatewayPagger"; //App、Buspro软件登录后获取网关列表 http 请求
                                        var gatewayListRequestPar = new RemoteRequestParameters () { Mac = CurRemoteMACInfo.mac, LoginAccessToken = mqttRequestPar.Token, RequestVersion = "RequestVersion1", RequestProtocolType = 0, RequestSource = 1 };
                                        var gatewayListRequestResult = MainPage.RequestHttps ("", Newtonsoft.Json.JsonConvert.SerializeObject (gatewayListRequestPar), false, false, gatewayListUrl);
                                        var gatewayListRequestResult_Obj = Newtonsoft.Json.JsonConvert.DeserializeObject<MqttRemoteInfo> (gatewayListRequestResult.ResponseData.ToString ());
                                        if (gatewayListRequestResult_Obj != null && gatewayListRequestResult_Obj.pageData.Count > 0) {
                                            CurRemoteMACInfo.aesKey = gatewayListRequestResult_Obj.pageData [0].aesKey;
                                            mqttEncryptKey = CurRemoteMACInfo.aesKey;
                                        }

                                    }

                                    if (aesDecryptTopic == "YouIpAndPortNoRecord" || aesDecryptTopic == "DecryptFail") {// -->   你当前的IP及端口在云端不存在,请重新登录连接下!
                                        await Close (true);
                                    } else if (aesDecryptTopic == @"/BeingSqueezedOffline") {
                                        try {
                                            Application.RunOnMainThread (() => {
                                                MainPage.Loading.Start ("");
                                                MainPage.LoginUser.LastTime = DateTime.MinValue;
                                                MainPage.LoginUser.SaveUserInfo ();
                                                Room.Lists.Clear ();
                                                new Shared.SimpleControl.Phone.AccountLogin (MainPage.LoginUser.AccountString.ToLower (), "").Show ();
                                                MainPage.LoginUser.LastTime = System.DateTime.MinValue;
                                                Shared.SimpleControl.Phone.UserMiddle.LinkStatusTip.BackgroundColor = SkinStyle.Current.LinkStatusTipColor;
                                                if (CommonPage.IsRemote) {
                                                     Close (true);
                                                }
                                                var webPush = new service.hdlcontrol.com_push.WebServicePush ();
                                                webPush.DeleteToken_Push (UserConfig.Instance.tokenID);
                                            });
                                        } catch (Exception ex) {
                                            Console.WriteLine (ex.Message);
                                        } finally {
                                            Application.RunOnMainThread (() => {
                                                Shared.SimpleControl.Phone.UserMiddle.LinkStatusTip.BackgroundColor = SkinStyle.Current.LinkStatusTipColor;
                                                MainPage.Loading.Hide ();
                                                new Alert (Language.StringByID (Shared.SimpleControl.R.MyInternationalizationString.Tip), Language.StringByID (Shared.SimpleControl.R.MyInternationalizationString.LoggedOnOtherDevices),
                                                    Language.StringByID (Shared.SimpleControl.R.MyInternationalizationString.Close)).Show ();
                                            });
                                        }
                                        if (!String.IsNullOrEmpty (MainPage.LoginUser.AllVisionRegisterDevUserNameGuid)) {
#if wallon
#else
                                            com.freeview.global.Video.Logout ();
#endif
                                        }
                                    }
                                    else if (aesDecryptTopic == $"/BusGateWayToClient/{CurRemoteMACInfo.macMark}/Common/CheckGateway") {
                                        // = $"/ClientToBusGateWay/{CurRemoteMACInfo.macMark}/Common/OldON";
                                        var ss = CommonPage.MyEncodingUTF8.GetString (aesDecryptPayload);
                                        var obj = Newtonsoft.Json.JsonConvert.DeserializeObject<ResponsePack> (ss);
                                        if (obj == null) {
                                            return;
                                        }
                                        switch (obj.StateCode) {
                                        case "HDLUdpDataForwardServerMqttClientNoOnLine":
                                        case "NoOnline":
                                        case "NetworkAnomaly"://不在线
                                            MainPage.AddTip (Language.StringByID (Shared.SimpleControl.R.MyInternationalizationString.RemoteFailedGatewayOffline));
                                            Application.RunOnMainThread (() => {
                                                MainPage.Loading.Hide ();
                                                Shared.SimpleControl.Phone.UserMiddle.LinkStatusTip.BackgroundColor = SkinStyle.Current.DelColor;
                                            });
                                            break;
                                        case "NoRecord"://MAC不正确
                                            MainPage.AddTip (Language.StringByID (Shared.SimpleControl.R.MyInternationalizationString.MACError));
                                            Application.RunOnMainThread (() => {
                                                MainPage.Loading.Hide ();
                                                Shared.SimpleControl.Phone.UserMiddle.LinkStatusTip.BackgroundColor = SkinStyle.Current.DelColor;
                                            });
                                            break;
                                        case "Success":
                                            CommonPage.IsRemote = true;
                                            Application.RunOnMainThread (() => {
                                                MainPage.Loading.Hide ();
                                                Shared.SimpleControl.Phone.UserMiddle.LinkStatusTip.BackgroundColor = 0xAA69E64A;
                                                Shared.SimpleControl.Phone.UserMiddle.ReadAllDeviceStatus ();
                                            });
                                            MainPage.AddTip (UserConfig.Instance.CurrentRegion.RegionName + ":" + Language.StringByID (Shared.SimpleControl.R.MyInternationalizationString.LinkSuccess));
                                            break;
                                        default:
                                            MainPage.AddTip (Language.StringByID (Shared.SimpleControl.R.MyInternationalizationString.LinkLoser));
                                            Application.RunOnMainThread (() => {
                                                MainPage.Loading.Hide ();
                                                Shared.SimpleControl.Phone.UserMiddle.LinkStatusTip.BackgroundColor = SkinStyle.Current.DelColor;
                                            });
                                            break;
                                        }
                                    } 
                                    else {
                                        if (!string.IsNullOrEmpty (mqttEncryptKey)) {
                                            aesDecryptTopic = Shared.Securitys.EncryptionService.AesDecryptTopic (e.ApplicationMessage.Topic, mqttEncryptKey);
                                            aesDecryptPayload = Shared.Securitys.EncryptionService.AesDecryptPayload (e.ApplicationMessage.Payload, mqttEncryptKey);
                                        } else {
                                            aesDecryptTopic = e.ApplicationMessage.Topic;
                                            aesDecryptPayload = e.ApplicationMessage.Payload;
                                        }
                                    }
                                    var packet = new Packet ();
                                    packet.Bytes = aesDecryptPayload;
                                    packet.Manager ();
                                });

                                RemoteMqttClient.UseDisconnectedHandler (e => {
                                    if (thisShowTip) {
                                        if (CommonPage.IsRemote) {
                                            Application.RunOnMainThread (() => {
                                                MainPage.Loading.Hide ();
                                                Shared.SimpleControl.Phone.UserMiddle.LinkStatusTip.BackgroundColor = SkinStyle.Current.DelColor;
                                            });
                                        }
                                    } else {
                                        thisShowTip = true;
                                    }
                                });
                                RemoteMqttClient.UseConnectedHandler (async e => {
                                    Console.WriteLine ($"RemoteMqttClient success!!");
                                    if (CurRemoteMACInfo != null) {
                                        if (CurRemoteMACInfo.isValid == "InValid") {
                                            MainPage.AddTip (Language.StringByID (Shared.SimpleControl.R.MyInternationalizationString.RemoteFailedGatewayOffline));
                                            Application.RunOnMainThread (() => {
                                                MainPage.Loading.Hide ();
                                                Shared.SimpleControl.Phone.UserMiddle.LinkStatusTip.BackgroundColor = SkinStyle.Current.DelColor;
                                            });
                                        } else {
                                            CommonPage.IsRemote = true;
                                            MqttRemoteSend (new byte [] {0 },3);
                                            //Application.RunOnMainThread (() => {
                                            //    MainPage.Loading.Hide ();
                                            //    Shared.SimpleControl.Phone.UserMiddle.LinkStatusTip.BackgroundColor = 0xAA69E64A;
                                            //    Shared.SimpleControl.Phone.UserMiddle.ReadAllDeviceStatus ();
                                            //});
                                            //MainPage.AddTip (UserConfig.Instance.CurrentRegion.RegionName + ":" + Language.StringByID (Shared.SimpleControl.R.MyInternationalizationString.LinkSuccess));
                                        }
                                    }
                                });
                            }

                            if (clientId == null || username == null || passwordRemote == null) {
                                return;
                            }

                            if (tempResult == null) {
                                Application.RunOnMainThread (() => {
                                    MainPage.Loading.Hide ();
                                    Shared.SimpleControl.Phone.UserMiddle.LinkStatusTip.BackgroundColor = SkinStyle.Current.DelColor;
                                });
                                return;
                            }
                            //--第一步：获取mqtt链接参数
                            var mqttInfoUrl = @"https://developer.hdlcontrol.com/Center/Center/GetConnMqttInfo";//获取连接远程云端Emq Mqtt 服务器连接信息
                            var mqttInfoRequestPar = new RemoteRequestParameters () { LoginAccessToken = mqttRequestPar.Token, RequestVersion = "RequestVersion1", RequestProtocolType = 0, RequestSource = 1 };
                            var mqttInfoRequestResult = MainPage.RequestHttps ("", Newtonsoft.Json.JsonConvert.SerializeObject (mqttInfoRequestPar), false, false, mqttInfoUrl);

                            if (mqttInfoRequestResult != null && mqttInfoRequestResult.ResponseData != null) {
                                try {
                                    var mqttInfoRequestResult_Obj = Newtonsoft.Json.JsonConvert.DeserializeObject<MqttInfo> (mqttInfoRequestResult.ResponseData.ToString ());
                                    if (mqttInfoRequestResult_Obj != null) {
                                        url = mqttInfoRequestResult_Obj.connEmqDomainPort;
                                        clientId = mqttInfoRequestResult_Obj.connEmqClientId;
                                        username = mqttInfoRequestResult_Obj.connEmqUserName;
                                        passwordRemote = mqttInfoRequestResult_Obj.connEmqPwd;
                                        //----第二步：读取账号下面的网关列表
                                        var gatewayListUrl = @"https://developer.hdlcontrol.com/Center/Center/GetGatewayPagger"; //App、Buspro软件登录后获取网关列表 http 请求
                                        var gatewayListRequestPar = new RemoteRequestParameters () { LoginAccessToken = mqttRequestPar.Token, RequestVersion = "RequestVersion1", RequestProtocolType = 0, RequestSource = 1 };
                                        var gatewayListRequestResult = MainPage.RequestHttps ("", Newtonsoft.Json.JsonConvert.SerializeObject (gatewayListRequestPar), false, false, gatewayListUrl);
                                        var gatewayListRequestResult_Obj = Newtonsoft.Json.JsonConvert.DeserializeObject<MqttRemoteInfo> (gatewayListRequestResult.ResponseData.ToString ());
                                        //--找出是否存在匹配当前住宅的mac，存在再进行远程。
                                        CurRemoteMACInfo = gatewayListRequestResult_Obj.pageData.Find ((obj) => obj.mac == UserConfig.Instance.CurrentRegion.MAC);
                                        if (CurRemoteMACInfo != null) {
                                            CurRemoteMACInfo.LoginAccessToken = mqttRequestPar.Token;
                                            mqttEncryptKey = CurRemoteMACInfo.aesKey;
                                            var options1 = new MQTTnet.Client.Options.MqttClientOptionsBuilder ()
                                                                .WithClientId (clientId)
                                                                .WithTcpServer (url.Split (':') [1].Substring ("//".Length), int.Parse (url.Split (':') [2]))
                                                                .WithCredentials (username, passwordRemote)
                                                                .WithCleanSession ()
                                                                .WithCommunicationTimeout (new TimeSpan (0, 0, 20))
                                                                .Build ();
                                            await Close ();
                                            await RemoteMqttClient.ConnectAsync (options1);
                                            await MqttRemoteSend (new byte [] { 0 }, 1);
                                            await MqttRemoteSend (new byte [] { 0 }, 2);
                                        }
                                    }
                                } catch { }
                            }
                        } catch (Exception ex) {
                            System.Console.WriteLine ("============>" + ex.Message);
                            Application.RunOnMainThread (() => {
                                //MainPage.Loading.Hide ();
                                //isConnecting = false.ToString ();

                                Shared.SimpleControl.Phone.UserMiddle.LinkStatusTip.BackgroundColor = SkinStyle.Current.DelColor;
#if DEBUG
                                Alert a = new Alert (isConnecting.ToString (), ex.Message, "Close");
                                a.Show ();
#endif
                                if (MqttCommon.RemoteMqttClient != null) {
                                    MqttCommon.RemoteMqttClient.Dispose ();
                                }
                                if (MqttCommon.RemoteMqttClient != null) {
                                    MqttCommon.RemoteMqttClient = null;
                                }
                            });
                        } finally {
                            isConnecting = false.ToString ();
                            Application.RunOnMainThread (() => {
                                MainPage.Loading.Hide ();
                                MainPage.tipTime += " Start remote step.7 : " + DateTime.Now.ToString ("yyyy-MM-dd hh:mm:ss:ffff") + ";\n";
                            });
                        }
                    }) { IsBackground = true }.Start ();
                }
            } catch (Exception ex) {
                System.Console.WriteLine ("============>" + ex.Message);
            } finally {
                isConnecting = false.ToString ();
            }
        }

        /// <summary>
        /// 
        /// </summary>
        /// <param name="message">附加数据包</param>
        /// <param name="optionType">操作类型：0=网关控制；1=订阅网关数据;2=订阅网关上线数据</param>
        /// <returns></returns>
        public static async Task MqttRemoteSend (byte [] message, int optionType = 0)
        {
            try {
                if (RemoteMqttClient == null || !RemoteMqttClient.IsConnected) {
                    await StartCloudMqtt ();
                }
                if (!RemoteMqttClient.IsConnected) {
                    return;
                }
                var topicName = @"/" + MainPage.LoginUser.AccountString.ToLower () + @"/" + UserConfig.Instance.GatewayMAC.Replace (".", "") + @"/" + currentGuid;
                switch (optionType) {
                case 0:
                    if (!string.IsNullOrEmpty (mqttEncryptKey)) {
                        topicName = $"/ClientToBusGateWay/{CurRemoteMACInfo.macMark}/Common/OldON";
                    } else {
                        topicName = $"/ClientToBusGateWay/{CurRemoteMACInfo.macMark}/Common/NewON";
                    }
                    //base64加密
                    var messageSend = Shared.Securitys.EncryptionService.AesEncryptPayload (message, mqttEncryptKey);
                    var m = new MqttApplicationMessage { Topic = topicName, Payload = messageSend, Retain = false, QualityOfServiceLevel = MQTTnet.Protocol.MqttQualityOfServiceLevel.ExactlyOnce };
                    await RemoteMqttClient?.PublishAsync (m);
                    break;
                case 1:
                    topicName = $"/BusGateWayToClient/{CurRemoteMACInfo.macMark}/Common/#";
                    await RemoteMqttClient?.SubscribeAsync (topicName);
                    break;
                case 2:
                    var macStr = CurRemoteMACInfo.mac.ToUpper ();
                    char [] cArrs = macStr.ToCharArray ();
                    Array.Reverse (cArrs);
                    var sss = string.Join (string.Empty, cArrs);

                    using (var provider = new MD5CryptoServiceProvider ()) {
                        byte [] buffer = provider.ComputeHash (Encoding.Default.GetBytes (sss));
                        StringBuilder builder = new StringBuilder ();
                        for (int i = 0; i < buffer.Length; i++) {
                            builder.Append (buffer [i].ToString ("x2"));
                        }
                        CurRemoteMACInfo.md5_mac_string = builder.ToString ().ToUpper ();
                    }

                    topicName = $"/NotifyBusGateWayInfoChagne/{CurRemoteMACInfo.md5_mac_string}";
                    await RemoteMqttClient?.SubscribeAsync (topicName);
                    break;

                case 3:
                    topicName = $"/ClientToBusGateWay/{CurRemoteMACInfo.macMark}/Common/CheckGateway";
                    //var topicNameBase64 = Shared.Securitys.EncryptionService.AesEncryptTopic (topicName, mqttEncryptKey);
                    ////BaseSexFourStrToMqttTopic
                    //var topicNameSend = BaseSexFourStrToMqttTopic (topicNameBase64);
                    ////base64加密主题
                    //var messageSend = Shared.Securitys.EncryptionService.AesEncryptPayload (new byte [] { 2, 1 }, mqttEncryptKey);
                    //var m = new MqttApplicationMessage { Topic = topicNameSend, Payload = messageSend, Retain = false, QualityOfServiceLevel = MQTTnet.Protocol.MqttQualityOfServiceLevel.ExactlyOnce };
                    //await RemoteMqttClient?.PublishAsync (m);

                    var messageSend1 = Shared.Securitys.EncryptionService.AesEncryptPayload (message, mqttEncryptKey);
                    var m1 = new MqttApplicationMessage { Topic = topicName, Payload = messageSend1, Retain = false, QualityOfServiceLevel = MQTTnet.Protocol.MqttQualityOfServiceLevel.ExactlyOnce };
                    await RemoteMqttClient?.PublishAsync (m1);

                    Console.WriteLine ("CheckGateway");
                    await RemoteMqttClient?.SubscribeAsync (topicName);
                    break;
                }
            } catch (Exception e) {
                isConnecting = false.ToString ();
            }
        }
    }
}

public class RemoteRequestParameters
{
    public string RequestVersion;
    public int RequestSource;
    public string LoginAccessToken;
    public int RequestProtocolType;

    public string Mac = "";
    public string GroupName = "";
}

public class MqttRemoteInfo
{
    public List<RemoteMACInfo> pageData;

    public int pageIndex = 0;
    public int pageSize = 10;
    public int totalCount = 3;
    public int totalPages = 1;
    public bool hasPreviousPage = false;
    public bool hasNextPage = false;
}

public class MqttInfo
{
    public string connEmqDomainPort;
    public string connEmqClientId;
    public string connEmqUserName;
    public string connEmqPwd;
}

public class RemoteMACInfo
{
    public string mac;
    public string macMark;
    public string isValid;
    public string aesKey;
    public bool isNewBusproGateway;
    public string groupName;
    public string projectName;
    public string userName;

    //app自定义数据
    public string md5_mac_string;
    public string LoginAccessToken;
}

namespace Shared.Securitys
{
    public partial class EncryptionService
    {

        #region 加密
        /// <summary>
        /// 加密主题为Base64
        /// </summary>
        /// <param name="pToEncrypt"></param>
        /// <param name="key"></param>
        /// <returns></returns>
        public static string AesEncryptTopic (string pToEncrypt, string key)
        {
            if (string.IsNullOrEmpty (pToEncrypt)) return null;
            if (string.IsNullOrEmpty (key)) return pToEncrypt;
            //需要加密内容的明文流
            Byte [] toEncryptArray = Encoding.UTF8.GetBytes (pToEncrypt);

            //配置AES加密Key(密钥、向量、模式、填充)
            RijndaelManaged rm = new RijndaelManaged {
                Key = Encoding.UTF8.GetBytes (key),
                IV = Encoding.UTF8.GetBytes (key),
                Mode = CipherMode.CBC,
                Padding = PaddingMode.PKCS7
            };

            //创建AES加密器对象
            ICryptoTransform cTransform = rm.CreateEncryptor ();

            //使用AES将明文流转成密文字节数组
            Byte [] resultArray = cTransform.TransformFinalBlock (toEncryptArray, 0, toEncryptArray.Length);

            //将AES生成的密文字节数组转成Base64字符串
            return Convert.ToBase64String (resultArray, 0, resultArray.Length);
        }


        /// <summary>
        /// 加密负载为二进制流
        /// </summary>
        /// <param name="toEncryptArray"></param>
        /// <param name="key"></param>
        /// <returns></returns>
        public static byte [] AesEncryptPayload (byte [] toEncryptArray, string key)
        {
            if (string.IsNullOrEmpty (key)) return toEncryptArray;
            //配置AES加密Key(密钥、向量、模式、填充)
            var rm = new RijndaelManaged {
                Key = Encoding.UTF8.GetBytes (key),
                IV = Encoding.UTF8.GetBytes (key),
                Mode = CipherMode.CBC,
                Padding = PaddingMode.PKCS7
            };

            //创建AES加密器对象
            var cTransform = rm.CreateEncryptor ();
            //使用AES将明文流转成密文字节数组
            return cTransform.TransformFinalBlock (toEncryptArray, 0, toEncryptArray.Length);
        }
        #endregion


        #region 解密
        /// <summary>
        /// 解密主题数据
        /// </summary>
        /// <param name="pToDecrypt"></param>
        /// <param name="key"></param>
        /// <returns></returns>
        public static string AesDecryptTopic (string pToDecrypt, string key)
        {
            //AES密文Base64转成字符串
            Byte [] toEncryptArray = Convert.FromBase64String (pToDecrypt);

            //配置AES加密Key(密钥、向量、模式、填充)
            RijndaelManaged rm = new RijndaelManaged {
                Key = Encoding.UTF8.GetBytes (key),
                IV = Encoding.UTF8.GetBytes (key),
                Mode = CipherMode.CBC,
                Padding = PaddingMode.PKCS7
            };

            //创建AES解密器对象
            ICryptoTransform cTransform = rm.CreateDecryptor ();

            //使用AES将密文流转成明文的字节数组
            Byte [] resultArray = cTransform.TransformFinalBlock (toEncryptArray, 0, toEncryptArray.Length);

            //转成字符串
            return Encoding.UTF8.GetString (resultArray);
        }

        /// <summary>
        /// 采用Aes解密负载数据
        /// </summary>
        /// <param name="toEncryptArray"></param>
        /// <param name="key"></param>
        /// <returns></returns>
        public static byte [] AesDecryptPayload (byte [] toEncryptArray, string key)
        {
            //配置AES加密Key(密钥、向量、模式、填充)
            var rm = new RijndaelManaged {
                Key = Encoding.UTF8.GetBytes (key),
                IV = Encoding.UTF8.GetBytes (key),
                Mode = CipherMode.CBC,
                Padding = PaddingMode.PKCS7
            };

            //创建AES解密器对象
            var cTransform = rm.CreateDecryptor ();

            //使用AES将密文流转成明文的字节数组
            return cTransform.TransformFinalBlock (toEncryptArray, 0, toEncryptArray.Length);
        }
        #endregion


    }
}

*/
using System.Collections.Generic;
using System;
using MQTTnet.Client;
using System.Threading.Tasks;
using Shared;
using Shared.SimpleControl;
using MQTTnet;
using System.Text;
using System.Security.Cryptography;

namespace SmartHome
{
    public static class MqttCommon
    {
        static string mqttEncryptKey = "";
        static string checkGatewayTopicBase64 = "";

        /// <summary>
        /// 手机标识
        /// </summary>
        static Guid currentGuid = Guid.NewGuid ();

        /// <summary>
        /// 外网的MQTT是否正在连接
        /// </summary>
        static object isConnecting = false.ToString ();
        /// <summary>
        /// 远程MqttClient
        /// </summary>
        public static IMqttClient RemoteMqttClient;

        static bool thisShowTip = true;

        public static async Task Close (bool RemoveRemoteMqttClient = false)
        {
            try {
                if (RemoteMqttClient != null) {
                    //thisShowTip = true;
                    await RemoteMqttClient.DisconnectAsync ();
                }
                if (RemoveRemoteMqttClient) {
                    RemoteMqttClient = null;
                }
                CommonPage.IsRemote = false;
                Console.WriteLine ("Close Mqtt!!!");
            } catch { }
        }

        static DateTime dateTime = DateTime.MinValue;
        static int startCount = 0;

        //public static async Task ReSatart ()
        //{
        //    await Close ();
        //    await RemoteMqttClient.ConnectAsync (options);
        //}

        /// <summary>
        /// 启动远程Mqtt
        /// </summary>
        public static async System.Threading.Tasks.Task StartCloudMqtt ()
        {
            MainPage.tipTime += " Start remote step.1 : " + DateTime.Now.ToString ("yyyy-MM-dd hh:mm:ss:ffff") + ";\n";


            Application.RunOnMainThread (() => {
                if (5 < (DateTime.Now - dateTime).TotalSeconds) {
                    return;
                }
                dateTime = DateTime.Now;
            });
            if (!MainPage.LoginUser.IsLogin) {
                isConnecting = false.ToString ();
                return;
            }
            while (isConnecting.ToString () == true.ToString ()) {
                if (5 < (DateTime.Now - dateTime).TotalSeconds) {
                    break;
                }
                await System.Threading.Tasks.Task.Delay (500);
            }
            lock (isConnecting) {
                if (isConnecting.ToString () == true.ToString ()) {
                    return;
                }
                isConnecting = true.ToString ();
                if (RemoteMqttClient != null && RemoteMqttClient.IsConnected) {
                    MqttCheckGateway ();
                    return;
                }
            }
            new System.Threading.Thread (async () => {
                try {
                    MainPage.tipTime += " Start remote step.2 : " + DateTime.Now.ToString ("yyyy-MM-dd hh:mm:ss:ffff") + ";\n";
                    if (RemoteMqttClient == null) {
                        var requestObj3 = new GatewayByRegionListObj () { RegionID = UserConfig.Instance.CurrentRegion.RegionID };
                        var requestJson3 = Newtonsoft.Json.JsonConvert.SerializeObject (requestObj3);
                        var revertObj3 = MainPage.RequestHttps ("GatewayByRegionList", requestJson3, true, false);
                        if (revertObj3.StateCode == "SUCCESS") {
                            var responseDataObj = Newtonsoft.Json.JsonConvert.DeserializeObject<List<GatewayRes>> (revertObj3.ResponseData.ToString ());
                            var gatewayList = responseDataObj;
                            if (gatewayList != null && gatewayList.Count > 0) {
                                UserConfig.Instance.CurrentRegion.MAC = gatewayList [0].MAC;
                                UserConfig.Instance.SaveUserConfig ();
                            }
                        } else {
                        }

                        //(2)创建Mqtt客户端
                        RemoteMqttClient = new MqttFactory ().CreateMqttClient ();
                        //(3)当[连接云端的Mqtt成功后]或者[以及后面App通过云端Mqtt转发数据给网关成功后],处理接收到云端数据包响应时在mqttServerClient_ApplicationMessageReceived这个方法处理
                        RemoteMqttClient.UseApplicationMessageReceivedHandler (async e => {
                            if (isConnecting.ToString () == true.ToString ())
                                isConnecting = false.ToString ();
                            var aesDecryptTopic = e.ApplicationMessage.Topic;
                            var aesDecryptPayload = e.ApplicationMessage.Payload;
                            if (aesDecryptTopic == "YouIpAndPortNoRecord" || aesDecryptTopic == "DecryptFail") {// -->   你当前的IP及端口在云端不存在,请重新登录连接下!
                                await Close (true);
                                await MqttCheckGateway ();
                            } else if (aesDecryptTopic == @"/BeingSqueezedOffline") {
                                try {
                                    Application.RunOnMainThread (() => {
                                        MainPage.Loading.Start ("");
                                        MainPage.LoginUser.LastTime = DateTime.MinValue;
                                        MainPage.LoginUser.SaveUserInfo ();
                                        Room.Lists.Clear ();
                                        new Shared.SimpleControl.Phone.AccountLogin (MainPage.LoginUser.AccountString.ToLower (), "").Show ();
                                        MainPage.LoginUser.LastTime = System.DateTime.MinValue;
                                        Shared.SimpleControl.Phone.UserMiddle.LinkStatusTip.BackgroundColor = SkinStyle.Current.LinkStatusTipColor;
                                        if (CommonPage.IsRemote) {
                                            SmartHome.MqttCommon.Close (true);
                                        }
                                        var webPush = new service.hdlcontrol.com_push.WebServicePush ();
                                        webPush.DeleteToken_Push (UserConfig.Instance.tokenID);
                                    });
                                } catch (Exception ex) {
                                    Console.WriteLine (ex.Message);
                                } finally {
                                    Application.RunOnMainThread (() => {
                                        Shared.SimpleControl.Phone.UserMiddle.LinkStatusTip.BackgroundColor = SkinStyle.Current.LinkStatusTipColor;
                                        MainPage.Loading.Hide ();
                                        new Alert (Language.StringByID (Shared.SimpleControl.R.MyInternationalizationString.Tip), Language.StringByID (Shared.SimpleControl.R.MyInternationalizationString.LoggedOnOtherDevices),
                                            Language.StringByID (Shared.SimpleControl.R.MyInternationalizationString.Close)).Show ();
                                    });
                                }
#if HDL
                                if (!String.IsNullOrEmpty (MainPage.LoginUser.AllVisionRegisterDevUserNameGuid)) {
                                    com.freeview.global.Video.Logout ();
                                }
#endif
                            } else {
                                aesDecryptTopic = Shared.Securitys.EncryptionService.AesDecryptTopic (e.ApplicationMessage.Topic, mqttEncryptKey);
                                aesDecryptPayload = Shared.Securitys.EncryptionService.AesDecryptPayload (e.ApplicationMessage.Payload, mqttEncryptKey);
                            }
                            if (aesDecryptTopic == @"/" + MainPage.LoginUser.AccountString.ToLower () + @"/CheckGateway/" + UserConfig.Instance.GatewayMAC.Replace (".", "")) {
                                MainPage.tipTime += " Start remote end : " + DateTime.Now.ToString ("yyyy-MM-dd hh:mm:ss:ffff") + ";\n";
                                var ss = CommonPage.MyEncodingUTF8.GetString (aesDecryptPayload);
                                var obj = Newtonsoft.Json.JsonConvert.DeserializeObject<ResponsePack> (ss);
                                if (obj == null) {
                                    return;
                                }
                                switch (obj.StateCode) {
                                case "HDLUdpDataForwardServerMqttClientNoOnLine":
                                case "NoOnline":
                                case "NetworkAnomaly"://不在线
                                    MainPage.AddTip (Language.StringByID (Shared.SimpleControl.R.MyInternationalizationString.RemoteFailedGatewayOffline));
                                    Application.RunOnMainThread (() => {
                                        MainPage.Loading.Hide ();
                                        Shared.SimpleControl.Phone.UserMiddle.LinkStatusTip.BackgroundColor = SkinStyle.Current.DelColor;
                                    });
                                    break;
                                case "NoRecord"://MAC不正确
                                    MainPage.AddTip (Language.StringByID (Shared.SimpleControl.R.MyInternationalizationString.MACError));
                                    Application.RunOnMainThread (() => {
                                        MainPage.Loading.Hide ();
                                        Shared.SimpleControl.Phone.UserMiddle.LinkStatusTip.BackgroundColor = SkinStyle.Current.DelColor;
                                    });
                                    break;
                                case "Success":
                                    CommonPage.IsRemote = true;
                                    Application.RunOnMainThread (() => {
                                        MainPage.Loading.Hide ();
                                        Shared.SimpleControl.Phone.UserMiddle.LinkStatusTip.BackgroundColor = 0xAA69E64A;
                                        Shared.SimpleControl.Phone.UserMiddle.ReadAllDeviceStatus ();
                                    });
                                    MainPage.AddTip (UserConfig.Instance.CurrentRegion.RegionName + ":" + Language.StringByID (Shared.SimpleControl.R.MyInternationalizationString.LinkSuccess));
                                    break;
                                default:
                                    MainPage.AddTip (Language.StringByID (Shared.SimpleControl.R.MyInternationalizationString.LinkLoser));
                                    Application.RunOnMainThread (() => {
                                        MainPage.Loading.Hide ();
                                        Shared.SimpleControl.Phone.UserMiddle.LinkStatusTip.BackgroundColor = SkinStyle.Current.DelColor;
                                    });
                                    break;
                                }
                            } else {
                                var packet = new Packet ();
                                packet.Bytes = aesDecryptPayload;
                                packet.Manager ();
                            }
                        });

                        RemoteMqttClient.UseDisconnectedHandler (e => {
                            //Console.WriteLine ("RemoteMqttClient UseDisconnectedHandler");
                            if (thisShowTip) {
                                if (CommonPage.IsRemote) {
                                    //MainPage.AddTip (Language.StringByID (Shared.SimpleControl.R.MyInternationalizationString.RemoteConnectionDisconnected));
                                    Application.RunOnMainThread (() => {
                                        MainPage.Loading.Hide ();
                                        Shared.SimpleControl.Phone.UserMiddle.LinkStatusTip.BackgroundColor = SkinStyle.Current.DelColor;
                                    });
                                }
                            } else {
                                thisShowTip = true;
                            }
                        });
                        RemoteMqttClient.UseConnectedHandler (async e => {
                            //Console.WriteLine ("RemoteMqttClient IsRemote");
                            await MqttCheckGateway ();
                        });
                    }

                    MainPage.tipTime += " Start remote step.3 : " + DateTime.Now.ToString ("yyyy-MM-dd hh:mm:ss:ffff") + ";\n";
                    var requestObj = new LoginObj () { Account = MainPage.LoginUser.AccountString.ToLower (), Password = MainPage.LoginUser.Password, Company = MainPage.SoftSmsType };
                    var requestJson = Newtonsoft.Json.JsonConvert.SerializeObject (requestObj);
                    var tempResult = MainPage.RequestHttps ("Login", requestJson, false);
                    if (tempResult == null) {
                        Application.RunOnMainThread (() => {
                            MainPage.Loading.Hide ();
                            Shared.SimpleControl.Phone.UserMiddle.LinkStatusTip.BackgroundColor = SkinStyle.Current.DelColor;
                        });
                        System.Console.WriteLine ($"重新连接远程通讯失败，因为获取新的KEY失败");
                        return;
                    }
                    //var messgae = System.Text.Encoding.UTF8.GetString (tempResult);
                    MainPage.tipTime += " Start remote step.4 : " + DateTime.Now.ToString ("yyyy-MM-dd hh:mm:ss:ffff") + ";\n";

                    var responsePack = tempResult.ResponseData;// Newtonsoft.Json.JsonConvert.DeserializeObject<Dictionary<string, object>> (messgae);
                    //if (responsePack == null || responsePack ["ResponseData"] == null) {
                    //    Console.WriteLine ("断开后重新链接需要重新登录获取连接的密码失败");
                    //    return;
                    //}
                    var dictrionaryResult = Newtonsoft.Json.JsonConvert.DeserializeObject<Dictionary<string, object>> (tempResult.ResponseData.ToString ());
                    //var dictrionaryResult = Newtonsoft.Json.JsonConvert.DeserializeObject<Dictionary<string, object>> (responsePack ["ResponseData"].ToString ());
                    //////还有种情况是同一个ID 有多个设备用这个id连接（会导致中断）
                    mqttEncryptKey = dictrionaryResult ["HdlOnMqttKey"]?.ToString ();
                    var url = dictrionaryResult ["ConnectMqttBrokerLoadSubDomain"]?.ToString ();
                    var clientId = dictrionaryResult ["ConnectMqttClientId"]?.ToString ();
                    var username = dictrionaryResult ["ConnectMqttBrokerUserName"]?.ToString ();
                    var passwordRemote = dictrionaryResult ["ConnectMqttBrokerPwd"]?.ToString ();

                    if (clientId == null || username == null || passwordRemote == null) {
                        return;
                    }

                    ////(1)连接到云端的Mqtt客户端连接参数
                    var options = new MQTTnet.Client.Options.MqttClientOptionsBuilder ()
                                 .WithClientId (clientId)
                                 .WithTcpServer (url.Split (':') [1].Substring ("//".Length), int.Parse (url.Split (':') [2]))//
                                 .WithCredentials (username, passwordRemote)
                                 .WithCleanSession ()
                                 .WithCommunicationTimeout (new TimeSpan (0, 0, 10))
                                 .Build ();

                    MainPage.tipTime += " Start remote step.5 : " + DateTime.Now.ToString ("yyyy-MM-dd hh:mm:ss:ffff") + ";\n";
                    await Close ();
                    await RemoteMqttClient.ConnectAsync (options);
                    MainPage.tipTime += " Start remote step.6 : " + DateTime.Now.ToString ("yyyy-MM-dd hh:mm:ss:ffff") + ";\n";
                } catch (Exception ex) {
                    System.Console.WriteLine ("============>" + ex.Message);
                    Application.RunOnMainThread (() => {
                        MainPage.Loading.Hide ();
                        isConnecting = false.ToString ();

                        Shared.SimpleControl.Phone.UserMiddle.LinkStatusTip.BackgroundColor = SkinStyle.Current.DelColor;
#if DEBUG
                        Alert a = new Alert (isConnecting.ToString (), ex.Message, "Close");
                        a.Show ();
#endif
                        if (MqttCommon.RemoteMqttClient != null) {
                            MqttCommon.RemoteMqttClient.Dispose ();
                        }
                        if (MqttCommon.RemoteMqttClient != null) {
                            MqttCommon.RemoteMqttClient = null;
                        }
                    });
                } finally {
                    isConnecting = false.ToString ();
                    Application.RunOnMainThread (() => {
                        MainPage.Loading.Hide ();
                        MainPage.tipTime += " Start remote step.7 : " + DateTime.Now.ToString ("yyyy-MM-dd hh:mm:ss:ffff") + ";\n";
                    });
                }
            }) { IsBackground = true }.Start ();
        }

        /// <summary>
        /// Logins the by PWDA sync.
        /// </summary>
        public static async System.Threading.Tasks.Task<byte []> LoginByPWDAsync (string account, string password, string source = "", int company = 0)
        {
            try {
                var result = await MainPage.RequestHttpsResultAsync ("Login",
                System.Text.Encoding.UTF8.GetBytes (Newtonsoft.Json.JsonConvert.SerializeObject (new Dictionary<string, object> {
                    ["Account"] = account,
                    ["Password"] = password,
                    ["Source"] = source,
                    ["Company"] = company
                })));
                return result;
            } catch {
                return null;
            }
        }

        /// <summary>
        /// 将Base64字符串，转换成合法的Mqtt主题
        /// </summary>
        /// <param name="baseSexFourEncStr"></param>
        /// <returns></returns>
        public static string BaseSexFourStrToMqttTopic (string baseSexFourEncStr)
        {
            baseSexFourEncStr = baseSexFourEncStr.Replace ("+", "[[$-MQTT_PLUS_SYMBOL_REPLACE-$]]");
            baseSexFourEncStr = baseSexFourEncStr.Replace ("/", "[[$-MQTT_TILT_SYMBOL_REPLACE-$]]");
            return baseSexFourEncStr;
        }

        public static async System.Threading.Tasks.Task MqttRemoteSend (byte [] message)
        {
            try {
                if (RemoteMqttClient == null || !RemoteMqttClient.IsConnected) {
                    await StartCloudMqtt ();
                }
                if (!RemoteMqttClient.IsConnected) {
                    return;
                }
                var topicName = @"/" + MainPage.LoginUser.AccountString.ToLower () + @"/" + UserConfig.Instance.GatewayMAC.Replace (".", "") + @"/" + currentGuid;

                //base64加密主题
                checkGatewayTopicBase64 = Shared.Securitys.EncryptionService.AesEncryptTopic (topicName, mqttEncryptKey);

                //BaseSexFourStrToMqttTopic
                var topicNameSend = BaseSexFourStrToMqttTopic (checkGatewayTopicBase64);

                //base64加密主体
                var messageSend = Shared.Securitys.EncryptionService.AesEncryptPayload (message, mqttEncryptKey);

                var m = new MqttApplicationMessage { Topic = topicNameSend, Payload = messageSend, Retain = false, QualityOfServiceLevel = MQTTnet.Protocol.MqttQualityOfServiceLevel.ExactlyOnce };
                await RemoteMqttClient?.PublishAsync (m);
            } catch (Exception e) {
                isConnecting = false.ToString ();
            }
        }

        public static async Task MqttCheckGateway ()
        {
            try {
                if (RemoteMqttClient == null || !RemoteMqttClient.IsConnected) {
                    await StartCloudMqtt ();
                }
                if (!RemoteMqttClient.IsConnected) {
                    return;
                }
                var topicName = @"/" + MainPage.LoginUser.AccountString.ToLower () + @"/CheckGateway/" + UserConfig.Instance.GatewayMAC.Replace (".", "");
                Console.WriteLine ("MqttCheckGateway : " + topicName);
                //base64加密主题
                var topicNameBase64 = Shared.Securitys.EncryptionService.AesEncryptTopic (topicName, mqttEncryptKey);

                //BaseSexFourStrToMqttTopic
                var topicNameSend = BaseSexFourStrToMqttTopic (topicNameBase64);

                //base64加密主题
                var messageSend = Shared.Securitys.EncryptionService.AesEncryptPayload (new byte [] { 2, 1 }, mqttEncryptKey);

                var m = new MqttApplicationMessage { Topic = topicNameSend, Payload = messageSend, Retain = false, QualityOfServiceLevel = MQTTnet.Protocol.MqttQualityOfServiceLevel.ExactlyOnce };
                await RemoteMqttClient?.PublishAsync (m);
            } catch (Exception e) {
                isConnecting = false.ToString ();
            }
        }
    }
}



namespace Shared.Securitys
{
    public partial class EncryptionService
    {

        #region 加密
        /// <summary>
        /// 加密主题为Base64
        /// </summary>
        /// <param name="pToEncrypt"></param>
        /// <param name="key"></param>
        /// <returns></returns>
        public static string AesEncryptTopic (string pToEncrypt, string key)
        {
            if (string.IsNullOrEmpty (pToEncrypt)) return null;
            //需要加密内容的明文流
            Byte [] toEncryptArray = Encoding.UTF8.GetBytes (pToEncrypt);

            //配置AES加密Key(密钥、向量、模式、填充)
            RijndaelManaged rm = new RijndaelManaged {
                Key = Encoding.UTF8.GetBytes (key),
                IV = Encoding.UTF8.GetBytes (key),
                Mode = CipherMode.CBC,
                Padding = PaddingMode.PKCS7
            };

            //创建AES加密器对象
            ICryptoTransform cTransform = rm.CreateEncryptor ();

            //使用AES将明文流转成密文字节数组
            Byte [] resultArray = cTransform.TransformFinalBlock (toEncryptArray, 0, toEncryptArray.Length);

            //将AES生成的密文字节数组转成Base64字符串
            return Convert.ToBase64String (resultArray, 0, resultArray.Length);
        }


        /// <summary>
        /// 加密负载为二进制流
        /// </summary>
        /// <param name="toEncryptArray"></param>
        /// <param name="key"></param>
        /// <returns></returns>
        public static byte [] AesEncryptPayload (byte [] toEncryptArray, string key)
        {
            //配置AES加密Key(密钥、向量、模式、填充)
            var rm = new RijndaelManaged {
                Key = Encoding.UTF8.GetBytes (key),
                IV = Encoding.UTF8.GetBytes (key),
                Mode = CipherMode.CBC,
                Padding = PaddingMode.PKCS7
            };

            //创建AES加密器对象
            var cTransform = rm.CreateEncryptor ();
            //使用AES将明文流转成密文字节数组
            return cTransform.TransformFinalBlock (toEncryptArray, 0, toEncryptArray.Length);
        }
        #endregion


        #region 解密
        /// <summary>
        /// 解密主题数据
        /// </summary>
        /// <param name="pToDecrypt"></param>
        /// <param name="key"></param>
        /// <returns></returns>
        public static string AesDecryptTopic (string pToDecrypt, string key)
        {
            //AES密文Base64转成字符串
            Byte [] toEncryptArray = Convert.FromBase64String (pToDecrypt);

            //配置AES加密Key(密钥、向量、模式、填充)
            RijndaelManaged rm = new RijndaelManaged {
                Key = Encoding.UTF8.GetBytes (key),
                IV = Encoding.UTF8.GetBytes (key),
                Mode = CipherMode.CBC,
                Padding = PaddingMode.PKCS7
            };

            //创建AES解密器对象
            ICryptoTransform cTransform = rm.CreateDecryptor ();

            //使用AES将密文流转成明文的字节数组
            Byte [] resultArray = cTransform.TransformFinalBlock (toEncryptArray, 0, toEncryptArray.Length);

            //转成字符串
            return Encoding.UTF8.GetString (resultArray);
        }

        /// <summary>
        /// 采用Aes解密负载数据
        /// </summary>
        /// <param name="toEncryptArray"></param>
        /// <param name="key"></param>
        /// <returns></returns>
        public static byte [] AesDecryptPayload (byte [] toEncryptArray, string key)
        {
            //配置AES加密Key(密钥、向量、模式、填充)
            var rm = new RijndaelManaged {
                Key = Encoding.UTF8.GetBytes (key),
                IV = Encoding.UTF8.GetBytes (key),
                Mode = CipherMode.CBC,
                Padding = PaddingMode.PKCS7
            };

            //创建AES解密器对象
            var cTransform = rm.CreateDecryptor ();

            //使用AES将密文流转成明文的字节数组
            return cTransform.TransformFinalBlock (toEncryptArray, 0, toEncryptArray.Length);
        }
        #endregion


    }
}