更新corpcore中的https请求

WeChat.CorpLib/Core/HTTPHelper.cs

@@ -3,6 +3,8 @@ using System.Collections.Generic;
 using System.IO;
 using System.Linq;
 using System.Net;
+using System.Net.Security;
+using System.Security.Cryptography.X509Certificates;
 using System.Web;
 
 namespace WeChat.CorpLib.Core
@@ -20,6 +22,8 @@ namespace WeChat.CorpLib.Core
         public static string PostRequest(string url, DataTypeEnum ContentType, string strData)
         {
             string result = string.Empty;
+            ServicePointManager.ServerCertificateValidationCallback = new System.Net.Security.RemoteCertificateValidationCallback(CheckValidationResult);
+            ServicePointManager.SecurityProtocol = SecurityProtocolType.Ssl3 | SecurityProtocolType.Tls | (SecurityProtocolType)768 | (SecurityProtocolType)3072;
             WebRequest webRequest = WebRequest.Create(url);
             webRequest.Method = MethodTypeEnum.Post.ToString();
             webRequest.ContentType = "application/" + ContentType.ToString();
@@ -45,6 +49,8 @@ namespace WeChat.CorpLib.Core
         public static string GetRequest(string url)
         {
             string result = string.Empty;
+            ServicePointManager.ServerCertificateValidationCallback = new System.Net.Security.RemoteCertificateValidationCallback(CheckValidationResult);
+            ServicePointManager.SecurityProtocol = SecurityProtocolType.Ssl3 | SecurityProtocolType.Tls | (SecurityProtocolType)768 | (SecurityProtocolType)3072;
             WebRequest webRequest = WebRequest.Create(url);
             webRequest.Method =MethodTypeEnum.Get.ToString(); 
             using (StreamReader reader = new StreamReader(webRequest.GetResponse().GetResponseStream()))
@@ -53,8 +59,16 @@ namespace WeChat.CorpLib.Core
             }
             return result;
         }
+
+
+        private static bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors)
+        {   // 总是接受 认证平台 服务器的证书
+            return true;
+        }
     }
 
+
+
     /// <summary>
     /// 带参数据类型
     /// </summary>