System.Net.Security.Tests.SslStreamNetworkStreamTest.SslStream_SendReceiveOverNetworkStream_Ok C# (CSharp) Method

        public async void SslStream_SendReceiveOverNetworkStream_Ok()
        {
            TcpListener listener = new TcpListener(IPAddress.Any, 0);

            using (X509Certificate2 serverCertificate = Configuration.Certificates.GetServerCertificate())
            using (TcpClient client = new TcpClient())
            {
                listener.Start();

                Task clientConnectTask = client.ConnectAsync(IPAddress.Loopback, ((IPEndPoint)listener.LocalEndpoint).Port);
                Task<TcpClient> listenerAcceptTask = listener.AcceptTcpClientAsync();

                await Task.WhenAll(clientConnectTask, listenerAcceptTask);

                TcpClient server = listenerAcceptTask.Result;
                using (SslStream clientStream = new SslStream(
                    client.GetStream(),
                    false,
                    new RemoteCertificateValidationCallback(ValidateServerCertificate),
                    null,
                    EncryptionPolicy.RequireEncryption))
                using (SslStream serverStream = new SslStream(
                    server.GetStream(),
                    false,
                    null,
                    null,
                    EncryptionPolicy.RequireEncryption))
                {

                    Task clientAuthenticationTask = clientStream.AuthenticateAsClientAsync(
                        serverCertificate.GetNameInfo(X509NameType.SimpleName, false),
                        null,
                        SslProtocols.Tls12,
                        false);

                    Task serverAuthenticationTask = serverStream.AuthenticateAsServerAsync(
                        serverCertificate,
                        false,
                        SslProtocols.Tls12,
                        false);

                    await Task.WhenAll(clientAuthenticationTask, serverAuthenticationTask);

                    byte[] readBuffer = new byte[256];
                    Task<int> readTask = clientStream.ReadAsync(readBuffer, 0, readBuffer.Length);

                    byte[] writeBuffer = new byte[256];
                    Task writeTask = clientStream.WriteAsync(writeBuffer, 0, writeBuffer.Length);

                    bool result = Task.WaitAll(
                        new Task[1] { writeTask }, 
                        TestConfiguration.PassingTestTimeoutMilliseconds);

                    Assert.True(result, "WriteAsync timed-out.");
                }
            }
        }