• 加载安全证书访问Https接口，代码如下

 static HttpWebRequest getRequest()
        {
            HttpWebRequest request = null;
            if (request == null)
            {
                if (url.StartsWith("https", StringComparison.OrdinalIgnoreCase))
                {
                    request = WebRequest.Create(url) as HttpWebRequest;

                    //添加证书
                    X509Certificate2 x509Certificate2 = new X509Certificate2(Directory.GetCurrentDirectory() + @"\StaticFile\my.p12", "IoM@1234", X509KeyStorageFlags.PersistKeySet | X509KeyStorageFlags.MachineKeySet);
                    request.ClientCertificates.Add(x509Certificate2);

                    ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult);
                    request.ProtocolVersion = HttpVersion.Version11;
                    // 这里设置了协议类型。
                    ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls | SecurityProtocolType.Tls11 | SecurityProtocolType.Tls12;// (SecurityProtocolType)3072;// SecurityProtocolType.Tls1.2; 

                    ServicePointManager.CheckCertificateRevocationList = true;
                    ServicePointManager.DefaultConnectionLimit = 1000;
                    ServicePointManager.Expect100Continue = false;
                }
                else
                {
                    request = (HttpWebRequest)WebRequest.Create(url);
                }

                request.Method = "POST";    //使用get方式发送数据
                request.KeepAlive = true;
                request.Proxy = null;
                request.ContentType = "application/x-www-form-urlencoded;charset=UTF-8";
                request.Referer = null;
                request.AllowAutoRedirect = true;
                //request.ServicePoint.Expect100Continue = false;
                //request.ServicePoint.UseNagleAlgorithm = false;
                request.AllowWriteStreamBuffering = false;
                request.Timeout = 1000 * 10;
                request.ReadWriteTimeout = 1000 * 10;
                //request.UserAgent = "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.2; .NET CLR 1.1.4322; .NET CLR 2.0.50727)";
                request.Accept = "*/*";
            }
            return request;

        }

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• .net core 配置Https并引入安全文件，代码如下：

public class Program
    {
        public static void Main(string[] args)
        {
            CreateWebHostBuilder(args).Build().Run();
        }

        public static IWebHostBuilder CreateWebHostBuilder(string[] args) =>
            WebHost.CreateDefaultBuilder(args)
            .UseStartup<Startup>()
            .UseKestrel(options =>
            {
                options.Listen(IPAddress.Loopback, 5001, listenOptions =>
                {
                    listenOptions.UseHttps(AppContext.BaseDirectory+@"\my.p12", "IoM@1234");
                });
            })
            .UseIIS();
    }

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