c# - 尝试以访问权限禁止的方式访问套接字-部署到 azure 后

Question

在端口“81”处，我在控制室的任何地方都有自动化，并希望进行 api 调用以获取身份验证令牌。我在本地尝试了下面的代码，它工作正常，但是当我在 azure 应用程序服务中部署时出现错误

              using (HttpClient httpClient = new HttpClient())
                   {                     
                       var authenticateClient = new RestClient("ipaddress:81/v1/authentication");
                       var authenticateRequest = new RestRequest(Method.POST);
                       authenticateRequest.AddHeader("Content-Type", AAConstant.fileFormat);

                       authenticateRequest.Parameters.Clear();

                       authenticateRequest.AddJsonBody(new
                       {
                           username = "******",
                           password = "*******"
                       });
                       IRestResponse authenticateResponse = authenticateClient.Execute(authenticateRequest);

堆栈跟踪 ：

   System.Net.WebException: An attempt was made to access a socket in a way forbidden by its access permissions An attempt was made to access a socket in a way forbidden by its access permissions ---> System.Net.Http.HttpRequestException: An attempt was made to access a socket in a way forbidden by its access permissions ---> System.Net.Sockets.SocketException: An attempt was made to access a socket in a way forbidden by its access permissions
   at System.Net.Http.ConnectHelper.ConnectAsync(String host, Int32 port, CancellationToken cancellationToken)
   --- End of inner exception stack trace ---
   at System.Net.Http.ConnectHelper.ConnectAsync(String host, Int32 port, CancellationToken cancellationToken)
   at System.Threading.Tasks.ValueTask`1.get_Result()
   at System.Net.Http.HttpConnectionPool.CreateConnectionAsync(HttpRequestMessage request, CancellationToken cancellationToken)
   at System.Threading.Tasks.ValueTask`1.get_Result()
   at System.Net.Http.HttpConnectionPool.WaitForCreatedConnectionAsync(ValueTask`1 creationTask)
   at System.Threading.Tasks.ValueTask`1.get_Result()
   at System.Net.Http.HttpConnectionPool.SendWithRetryAsync(HttpRequestMessage request, Boolean doRequestAuth, CancellationToken cancellationToken)
   at System.Net.Http.RedirectHandler.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
   at System.Net.Http.DecompressionHandler.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
   at System.Net.Http.HttpClient.FinishSendAsyncUnbuffered(Task`1 sendTask, HttpRequestMessage request, CancellationTokenSource cts, Boolean disposeCts)
   at System.Net.HttpWebRequest.SendRequest()
   at System.Net.HttpWebRequest.GetResponse()
   --- End of inner exception stack trace ---
   at System.Net.HttpWebRequest.GetResponse()
   at RestSharp.Http.GetRawResponse(HttpWebRequest request)
   at RestSharp.Http.GetResponse(HttpWebRequest request)

更改了 azure app 服务计划，还禁用了防病毒、防火墙，但没有工作。

任何帮助！