英文:
unauthorized 401 error while using httpClient in C#
问题
Here is the translated code:
我正在使用httpClient调用受Azure AAD保护的WebApi。我调用MSAL库来获取令牌并设置如下标头。private async void SetHeaders(HttpClient HttpClientObj){IConfidentialClientApplication app;app = ConfidentialClientApplicationBuilder.Create(_configurationSettings.TestAppClientId).WithClientSecret(_configurationSettings.TestAppClientSecret).WithAuthority(new Uri(_configurationSettings.TestAppInstance + _configurationSettings.TestAppTenantId)).Build();AuthenticationResult result = null;IEnumerable<string> scopes = new List<string>() { _configurationSettings.TestAppAuthScope };try{result = await app.AcquireTokenForClient(scopes).ExecuteAsync();}catch (MsalServiceException ex){_logger.LogError("Exception Message: {ex}");}var defaultRequestHeaders = HttpClientObj.DefaultRequestHeaders;defaultRequestHeaders.Clear();if (defaultRequestHeaders.Accept == null || !defaultRequestHeaders.Accept.Any(m => m.MediaType == "application/json")){HttpClientObj.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));}try{defaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", result.AccessToken);}catch (Exception ex){_logger.LogError("Exception Message: {ex}");}}private async Task<HttpResponseMessage> CallTestAppAPIToGetDataAsync(string testAppUri){HttpResponseMessage response = null;HttpClient testHttpClientObj = new HttpClient();SetHeaders(testHttpClientObj);response = await testHttpClientObj.GetAsync(requestUri: gridstateUri);return response;}
Please note that code translation might be context-dependent, and it's important to ensure that the variables and configuration settings match your specific implementation.
英文:
I am using httpClient to call a WebApi protected with Azure AAD.
I call the MSAL library to fetch the token and set up the headers like below.
private async void SetHeaders(HttpClient HttpClientObj){IConfidentialClientApplication app;app = ConfidentialClientApplicationBuilder.Create(_configurationSettings.TestAppClientId).WithClientSecret(_configurationSettings.TestAppClientSecret).WithAuthority(new Uri(_configurationSettings.TestAppInstance + _configurationSettings.TestAppTenantId)).Build();AuthenticationResult result = null;IEnumerable<string> scopes = new List<string>() { _configurationSettings.TestAppAuthScope };try{result = await app.AcquireTokenForClient(scopes).ExecuteAsync();}catch (MsalServiceException ex){_logger.LogError("Exception Message: {ex}");}var defaultRequestHeaders = HttpClientObj.DefaultRequestHeaders;defaultRequestHeaders.Clear();if (defaultRequestHeaders.Accept == null || !defaultRequestHeaders.Accept.Any(m => m.MediaType == "application/json")){HttpClientObj.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));}try{defaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", result.AccessToken);}catch (Exception ex){_logger.LogError("Exception Message: {ex}");}}
private async Task<HttpResponseMessage> CallTestAppAPIToGetDataAsync(string testAppUri){HttpResponseMessage response = null;HttpClient testHttpClientObj = new HttpClient();SetHeaders(testHttpClientObj);response = await testHttpClientObj.GetAsync(requestUri: gridstateUri);return response;}
I added one breakpoint in line where the httpClientObj calls the API and I can see the Authorization token with the correct value.
When I try to hit the same uri with in postman with the same token it works fine, but here it gives 401 Unauthorized.
response = await testHttpClientObj.GetAsync(requestUri: gridstateUri);
答案1
得分: 3
你已经将SetHeaders方法声明为async，并在内部使用await，所以尝试通过将声明更改为async Task来修复你的代码。
private async Task SetHeaders(HttpClient HttpClientObj){...}
然后通过await SetHeaders(testHttpClientObj)等待此方法的结果，否则程序将在等待任务完成之前继续执行。
英文:
You have declared SetHeaders method as async and using await inside, so try fixing your code by changing declaration to async Task
private async Task SetHeaders(HttpClient HttpClientObj){...}
and then awaiting the result of this method by await SetHeaders(testHttpClientObj) otherwise the program continues without waiting for the task to complete
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