System.Net.Security.Tests.HttpsTestServer.RunTest C# (CSharp) Method

        public async Task RunTest()
        {
            bool done = false;

            while (!done)
            {
                try
                {
                    using (TcpClient requestClient = await _listener.AcceptTcpClientAsync())
                    {
                        _log.WriteLine("[Server] Client connected.");

                        using (var tls = new SslStream(requestClient.GetStream()))
                        {
                            await tls.AuthenticateAsServerAsync(
                                _serverCertificate,
                                false,
                                _protocols,
                                false);

                            _log.WriteLine("[Server] Client authenticated.");

                            done = await HttpConversation(tls);
                        }
                    }
                }
                catch (IOException)
                {
                    // Ignore I/O issues as browsers attempt to connect only to detect crypto information.
                }
            }

            _listener.Stop();
        }

        public async Task HttpClient_ClientUsesAuxRecord_Ok()
        {
            X509Certificate2 serverCert = Configuration.Certificates.GetServerCertificate();

            var server = new HttpsTestServer(serverCert);
            server.StartServer();
            int port = server.Port;

            string requestString = "https://localhost:" + port.ToString();
            
            using (var handler = new HttpClientHandler() { ServerCertificateCustomValidationCallback = LoopbackServer.AllowAllCertificates })
            using (var client = new HttpClient(handler))
            {
                var tasks = new Task[2];
                tasks[0] = server.RunTest();
                tasks[1] = client.GetStringAsync(requestString);
            
                await Task.WhenAll(tasks).TimeoutAfter(15 * 1000);
            
                if (server.AuxRecordDetected)
                {
                    _output.WriteLine("Test inconclusive: The Operating system preferred a non-CBC or Null cipher.");
                }
                else
                {
                    Assert.True(server.AuxRecordDetected, "Server reports: Client auxiliary record not detected.");
                }
            }
        }