Question

我在Xamarin.Form项目中使用Azure身份验证，收到的令牌用于进行API调用以进行身份验证。

在将应用程序保留在后台之后的一段时间之后，我再次尝试使API调用返回“未授权”。令牌到期时间设置为30分钟。但是，一旦将应用程序保留在后台并且某些时候它正常工作，未经授权的错误就不会发生。

有没有人遇到同样的问题。

public async Task<Response> AuthenticatedGet(string uri, string accessToken, string content = null)
    {

        Uri restUri = new Uri(uri, UriKind.RelativeOrAbsolute);
        HttpClient client = new HttpClient();
        client.Timeout = TimeSpan.FromSeconds(60);


        HttpRequestMessage request = new HttpRequestMessage(HttpMethod.Get, restUri.ToString());
        request.Headers.Add("Accept", "application/json");
        request.Headers.Add("Authorization",
                string.Format("Bearer {0}", accessToken));

        var result = await client.SendAsync(request);

        //HttpClient client = new HttpClient();
        //client.Timeout = TimeSpan.FromSeconds(60);
        //var result = await client.SendAsync(request);

        Response sr = new Response();
        if (result.IsSuccessStatusCode)
         {
            string responseString = await result.Content.ReadAsStringAsync();
            if (!string.IsNullOrEmpty(responseString))
            {
                sr.ResponseData = responseString;
                sr.IsSuccess = true;
                sr.StatusCode = (int)result.StatusCode;
            }
        }
        else if (result.StatusCode == HttpStatusCode.NotFound)
        {
            sr.ResponseData = $"Service not found at the specifed uri {uri}";
            sr.IsSuccess = false;
            sr.StatusCode = (int)result.StatusCode;
        }
        else
        {
            //var responseString = await result.Content.ReadAsStringAsync();
            //JObject jObject = JObject.Parse(responseString);
            //var messageProperty = jObject.Property("Message");
            //if (messageProperty != null && result.StatusCode == HttpStatusCode.Unauthorized)
            //{
            //    var message = messageProperty.Value?.ToString();
            //    sr.Message = !string.IsNullOrEmpty(message) ? message : result.ReasonPhrase;

            //    LogoutUnauthorisedUser?.Invoke(message);

            //    throw new UnauthorizedAccessException(message);
            //}
            //sr.Message = result.ReasonPhrase;
            //sr.IsSuccess = false;
            //sr.StatusCode = (int)result.StatusCode;

            //TODO: Handle Unauthorized user   
        }
        return sr;
    }


public async Task<ObservableCollection<NIODetails>> GetABCServiceAsync()
    {
        var uri = string.Format(_hostConfiguration.ABCHostName + _hostConfiguration.ABC, Configuration.ABC);

        var resonse = await _httpService.AuthenticatedGet(uri, Constant.ADToken, null);

        if (resonse.IsSuccess)
        {
            var list = JsonConvert.DeserializeObject<ObservableCollection<ABCDetails>>(resonse.ResponseData);
            return list;
        }
        else
        {
            return null;
        }

    }

未经授权的Http响应

0 个答案: