for the code below, it catches an HttpRequestException/ System.Net.Http.WinHttpException when called
the exception states:
NativeErrorCode 12175 Message "A security error occurred" - e {System.Net.Http.HttpRequestException: An error occurred while sending the request. ---> System.Net.Http.WinHttpException: A security error occurred at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1.ConfiguredTaskAwaiter.GetResult() at System.Net.Http.WinHttpHandler.<StartRequest>d__105.MoveNext() --- End of inner exception stack trace --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1.ConfiguredTaskAwaiter.GetResult() at System.Net.Http.HttpClient.<FinishSendAsync>d__58.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult() at Controllers.Controller.<Get>d__0.MoveNext() but using Postman on the same endpoint, resource, headers and body, I get a 200 back.
POST /account/ HTTP/1.1 Host: test-org.com X-HTTP-Method-Override: GET Content-Type: application/xml Cache-Control: no-cache Postman-Token: ce565d1a-bfb7-0961-ffd7-d279b90e97c5 <?xml version="1.0" encoding="UTF-8"?> <accountMessage xmlns="http://sdfssd ........ </accountMessage> when I do a google search for NativeErrorCode 12175 .NET, i find this: https://msdn.microsoft.com/en-us/library/windows/desktop/aa383770(v=vs.85).aspx
ERROR_WINHTTP_SECURE_FAILURE 12175 One or more errors were found in the Secure Sockets Layer (SSL) certificate sent by the server. To determine what type of error was encountered, check for a WINHTTP_CALLBACK_STATUS_SECURE_FAILURE notification in a status callback function. For more information, see WINHTTP_STATUS_CALLBACK. Code that's broken:
// GET: api/Accounts [HttpGet] public async Task<IActionResult> Get() { try { using (var client = new HttpClient()) { try { client.BaseAddress = new Uri("https://test-org.com/"); HttpRequestMessage request = new HttpRequestMessage(HttpMethod.Post, "account"); request.Content = new StringContent("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\r\n<accountMessage xml...</accountMessage>",Encoding.UTF8,"application/xml"); request.Headers.Add("X-HTTP-Method-Override", "GET"); var response = await client.SendAsync(request); response.EnsureSuccessStatusCode(); var stringResponse = await response.Content.ReadAsStringAsync(); var posts = JsonConvert.DeserializeObject<IEnumerable<Post>>(stringResponse); if (posts == null) return NotFound($"Posts were not found"); return Ok(posts); } catch (HttpRequestException e) { Console.WriteLine($"Request exception: {e.Message}"); } } } catch (Exception) { } return BadRequest(); } 
