[Route("api/[controller]/[action]")]
[ApiController]
public class OrdersController : Controller
{
        readonly IMediator _mediator;
        readonly ILogger<OrdersController> _logger;

        public OrdersController(IMediator mediator, ILogger<OrdersController> logger)
        {
            _mediator = mediator;
            _logger = logger;
        }

        [HttpPost]
        [ProducesResponseType(typeof(ResponseGetTracking), 200)]
        public async Task<PipeResponse> GetTracking(int number)
        {

            PipeRequest request = new PipeRequest();

            request.Data = JToken.FromObject(new RequestGetTracking()
            {
                Number = number,
            });

            var resp = await _mediator.Send(request);


            return resp;
        }
}

        [Fact]
        public async Task Test_GetTrackingEw()
        {

            PipeRequest request = new PipeRequest();

            request.MetaData = JToken.FromObject(new RequestGetTracking()
            {
                Number = 12345
            });

            using (var client = new HttpClient(new HttpClientHandler { UseProxy = false, ClientCertificateOptions = ClientCertificateOption.Automatic }))
            {
                client.BaseAddress = new Uri("http://localhost:64555/");

                HttpResponseMessage response;

                try
                {
                    response = await client.PostAsJsonAsync("api/Orders/GetTracking", request).ConfigureAwait(false);
                  // ОШИБКА: Подключение не установлено, т.к. конечный компьютер отверг запрос на подключение
                }
                catch (Exception ex)
                {

                    throw new Exception(ex.Message);
                }

                if (response.IsSuccessStatusCode)
                {
                    //Error.show("SUCCES");
                }
                else
                {
                    //Error.show("FAIL");
                }
            }
        }