如何从 Web 服务向客户端返回状态代码

我正在使用Web API 2编写C# Web 服务，如果客户端未获得正确凭据的授权，我希望能够向客户端发送StatusCode Unauthorized。

以下是ApiController筛选器代码：

public class ApiAuthorizeAttribute : AuthorizeAttribute
{
    protected override bool IsAuthorized(HttpActionContext actionContext)
    {
        if (HttpContext.Current.User.Identity.IsAuthenticated)
        {
            return true;
        }
        else
        {
            var httpResponseMessage = new HttpResponseMessage();
            httpResponseMessage.StatusCode = System.Net.HttpStatusCode.Unauthorized;
            actionContext.Response = httpResponseMessage;
            return false;
        }
    }
}

这是HttpClient代码：

private async Task<bool> RequestAuthorizeAsync(string serverAddress)
{
    using (HttpClient client = new HttpClient())
    {
        using (HttpRequestMessage request = new HttpRequestMessage(HttpMethod.Get, serverAddress))
        {
            request.Headers.Authorization = null;
            using (HttpResponseMessage response = await client.SendAsync(request))
            {
                if (response.StatusCode == HttpStatusCode.OK)
                {
                    return true;
                }
                else
                {
                    return false;
                }
            }
        }
    }
}

当 IsAuthorized 函数返回 false 时，设置了httpResponseMessage对象，HttpClient仍然返回 200 StatusCode，而不是 401 的StatusCode。

我可以帮忙将 401 StatusCode退回HttpClient吗？

if (response.StatusCode == HttpStatusCode.OK)
                {
                    response.StatusCode == HttpStatusCode.OK;
                    return response;
                }
                else
                {
                    throw new HttpResponseException(
     Request.CreateErrorResponse(HttpStatusCode.Unauthorized, myCustomMessage));
                }

            if (response.StatusCode == HttpStatusCode.OK)
            {
                return Ok();
            }
            else
            {
                return Unauthorized();
            }