HttpClient: обычно разрешено только одно использование каждого адреса сокета (протокол/сетевой адрес/порт). ⇐ C#

[Anonymous]

I have an application (ASP NET .NET Framework) that is sending HTTP requests(calls) to my API (.net framework web API), Some times I have got errors like this - Only one usage of each socket address(protocol/network address/port) is normally permitted. I have checked netstat and found that HttpClient is opening a connection very much and not closing a connection so each time it opens the connection and when the limit of connection has expired it gives that error.

I saw the error in the dev/test and prod environment. But don't find an error in the local run.

Code example: This is a call to API where mainClient() is a function that is creating httpClient

internal static void DeleteWorkflowDocument(int workflowId, int tableid) { HttpResponseMessage responseMessage = mainClient().PostAsync("/api/Workflow/DeleteWorkflowDocument?workflowId=" + workflowId + "&tableid=" + tableid, null).Result; } And here is HttpClient function

public static HttpClient mainClient() { try { HttpClient newMainClient = new HttpClient(); newMainClient.BaseAddress = new Uri(System.Configuration.ConfigurationManager.AppSettings["APIURI"]); newMainClient.DefaultRequestHeaders.Accept.Clear(); newMainClient.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json")); newMainClient.Timeout = TimeSpan.FromMinutes(10); if (HttpContext.Current.Request.Cookies["token__"] != null) { newMainClient.DefaultRequestHeaders.Add("Authorization", "Bearer " + HttpContext.Current.Request.Cookies["token__"].Value.ToString()); } return newMainClient; } catch (Exception ex) { return null; } } here as you see only one refresh is adding a huge count of connections and not closing connections


Источник: https://stackoverflow.com/questions/641 ... dress-port