private static void getSslStream()
    {
        try
        {
            var clientCertificate = new X509Certificate2(ClientCertificateFile, ClientCertificatePassword);
            var clientCertificateCollection = new X509CertificateCollection(
                                                new X509Certificate[] {
                                                    clientCertificate
                                               });


            using (var client = new TcpClient(ServerHostName, ServerPort))
            using (var sslStream = new SslStream(client.GetStream(), false,
             new RemoteCertificateValidationCallback(App_CertificateValidation)))
            {
                Console.WriteLine("Client connected.");

                sslStream.AuthenticateAsClient(ServerCertificateName, clientCertificateCollection, SslProtocols.Tls12, false);

                Console.WriteLine("SSL authentication completed.");
                Console.WriteLine("SSL using local certificate {0}.", sslStream.LocalCertificate.Subject);
                Console.WriteLine("SSL using remote certificate {0}.", sslStream.RemoteCertificate.Subject);



                var request = new StringBuilder();


                request.AppendLine("GET <ipaddress with webservic method name> HTTP/1.1");
                request.AppendLine(string.Format("Host: {0}", hostname));
                request.AppendLine("Connection: close");

                request.AppendLine();

                var outputBuffer = Encoding.UTF8.GetBytes(request.ToString());
                sslStream.Write(outputBuffer);
                sslStream.Flush();
                Console.WriteLine("Sent: {0}", outputBuffer);



                var inputBuffer = new byte[4096];
                var inputBytes = 0;
                while (inputBytes == 0)
                {
                    inputBytes = sslStream.Read(inputBuffer, 0, inputBuffer.Length);
                }
                var inputMessage = Encoding.UTF8.GetString(inputBuffer, 0, inputBytes);
                Console.WriteLine("Received: {0}", inputMessage);

            }
        }
        catch (Exception ex)
        {
            Console.WriteLine("*** {0}n*** {1}!", ex.GetType().Name, ex.Message);
        }

        Console.WriteLine();
        Console.WriteLine("Press any key to continue...");
        Console.ReadKey();
    }

private static void postSslStream()
    {
        try
        {
            var clientCertificate = new X509Certificate2(ClientCertificateFile, ClientCertificatePassword);
            var clientCertificateCollection = new X509CertificateCollection(
                                                new X509Certificate[] {
                                                    clientCertificate
                                               });


            using (var client = new TcpClient(ServerHostName, ServerPort))
            using (var sslStream = new SslStream(client.GetStream(), false,
             new RemoteCertificateValidationCallback(App_CertificateValidation)))
            {
                Console.WriteLine("Client connected.");

                sslStream.AuthenticateAsClient(ServerCertificateName, clientCertificateCollection, SslProtocols.Tls12, false);

                Console.WriteLine("SSL authentication completed.");
                Console.WriteLine("SSL using local certificate {0}.", sslStream.LocalCertificate.Subject);
                Console.WriteLine("SSL using remote certificate {0}.", sslStream.RemoteCertificate.Subject);

                var request = new StringBuilder();
                var json = "{"info1": [{"info2":1,"info3":2}]}";

                request.AppendLine("POST <web service method> HTTP/1.1");
                request.AppendLine(string.Format("Host: {0}", hostname));
                request.AppendLine("Content-Type: application/json");
                request.AppendLine("Cache-Control: no-cache");
                request.AppendLine("username: username");
                request.AppendLine("password: password");
                request.AppendLine(string.Format("Body: {0}", json));
                request.AppendLine("Connection: close");
                request.AppendLine();

                var outputBuffer = Encoding.UTF8.GetBytes(request.ToString());
                sslStream.Write(outputBuffer);
                sslStream.Flush();
                Console.WriteLine("Sent: {0}", outputBuffer);


                var inputBuffer = new byte[4096];
                var inputBytes = 0;
                while (inputBytes == 0)
                {
                    inputBytes = sslStream.Read(inputBuffer, 0, inputBuffer.Length);
                }
                var inputMessage = Encoding.UTF8.GetString(inputBuffer, 0, inputBytes);
                Console.WriteLine("Received: {0}", inputMessage);

            }
        }
        catch (Exception ex)
        {
            Console.WriteLine("*** {0}n*** {1}!", ex.GetType().Name, ex.Message);
        }

        Console.WriteLine();
        Console.WriteLine("Press any key to continue...");
        Console.ReadKey();
    }