C# Net core 2.2:HttpClient超时时OperationCanceledException代替TaskCanceledException
在我们的项目中，我们有一个C# Net core 2.2:HttpClient超时时OperationCanceledException代替TaskCanceledException,c#,asp.net-core,dotnet-httpclient,asp.net-core-2.2,C#,Asp.net Core,Dotnet Httpclient,Asp.net Core 2.2,在我们的项目中，我们有一个HttpClient，用于严格超时的传出连接，之前，我像所有教程建议的那样处理超时情况：通过捕获TaskCanceledException。它成功了。但是从最近开始（不能说确切的时间，但大约一个月），超时开始导致操作取消异常 System.OperationCanceledException: The operation was canceled. at System.Net.Http.HttpClient.HandleFinishSendAsyncError(E
HttpClientTaskCanceledException操作取消异常System.OperationCanceledException: The operation was canceled.
at System.Net.Http.HttpClient.HandleFinishSendAsyncError(Exception e, CancellationTokenSource cts)
at System.Net.Http.HttpClient.FinishSendAsyncBuffered(Task`1 sendTask, HttpRequestMessage request, CancellationTokenSource cts, Boolean disposeCts)
<buisness-logic traceback>
at Microsoft.AspNetCore.Mvc.Internal.ActionMethodExecutor.TaskOfIActionResultExecutor.Execute(IActionResultTypeMapper mapper, ObjectMethodExecutor executor, Object controller, Object[] arguments)
at System.Threading.Tasks.ValueTask`1.get_Result()
at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.InvokeActionMethodAsync()
at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.InvokeNextActionFilterAsync()
at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.Rethrow(ActionExecutedContext context)
at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted)
at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.InvokeInnerFilterAsync()
at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeNextResourceFilter()
at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.Rethrow(ResourceExecutedContext context)
at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted)
at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeFilterPipelineAsync()
at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeAsync()
at Microsoft.AspNetCore.Routing.EndpointMiddleware.Invoke(HttpContext httpContext)
at Microsoft.AspNetCore.Routing.EndpointRoutingMiddleware.Invoke(HttpContext httpContext)
at Microsoft.AspNetCore.Builder.RouterMiddleware.Invoke(HttpContext httpContext)
--- End of stack trace from previous location where exception was thrown ---
at Microsoft.AspNetCore.Authentication.AuthenticationMiddleware.Invoke(HttpContext context)
at Microsoft.AspNetCore.StaticFiles.StaticFileMiddleware.Invoke(HttpContext context)
at NSwag.AspNetCore.Middlewares.SwaggerUiIndexMiddleware`1.Invoke(HttpContext context)
at NSwag.AspNetCore.Middlewares.RedirectToIndexMiddleware.Invoke(HttpContext context)
at NSwag.AspNetCore.Middlewares.SwaggerDocumentMiddleware.Invoke(HttpContext context)
at Microsoft.AspNetCore.Server.IIS.Core.IISHttpContextOfT`1.ProcessRequestAsync()
System.OperationCanceledException:操作已取消。
位于System.Net.Http.HttpClient.HandleFinishSendAsyncError（异常e，CancellationTokenSource cts）
位于System.Net.Http.HttpClient.FinishSendAsyncBuffered（任务'1 sendTask，HttpRequestMessage请求，取消令牌源cts，布尔处理）
位于Microsoft.AspNetCore.Mvc.Internal.ActionMethodExecutor.TaskOfActionResultExecutor.Execute（IActionResultTypeMapper映射器、ObjectMethodExecutor执行器、对象控制器、对象[]参数）
在System.Threading.Tasks.ValueTask`1.get_Result（）处
在Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.InvokeActionMethodAsync（）中
在Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.InvokeNextActionFilterAsync（）上
位于Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.Rethrow（ActionExecutedContext上下文）
位于Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.Next（状态和下一步、范围和范围、对象和状态、布尔值和isCompleted）
在Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.InvokeInnerFilterAsync（）中
在Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeNextResourceFilter（）上
位于Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.Rethrow（ResourceExecutedContext）
在Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.Next（State&Next、Scope&Scope、Object&State、Boolean&isCompleted）
在Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeFilterPipelineAsync（）中
在Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeAsync（）上
位于Microsoft.AspNetCore.Routing.EndpointMiddleware.Invoke（HttpContext HttpContext）
位于Microsoft.AspNetCore.Routing.EndpointRoutingMiddleware.Invoke（HttpContext HttpContext）
在Microsoft.AspNetCore.Builder.RouterMiddleware.Invoke（HttpContext HttpContext）中
---来自引发异常的上一个位置的堆栈结束跟踪---
在Microsoft.AspNetCore.Authentication.AuthenticationMiddleware.Invoke（HttpContext上下文）中
位于Microsoft.AspNetCore.StaticFiles.StaticFileMiddleware.Invoke（HttpContext上下文）
位于NSwag.AspNetCore.middleware.SwaggerUiIndexMiddleware`1.Invoke（HttpContext上下文）
位于NSwag.AspNetCore.middleware.RedirectToIndexMiddleware.Invoke（HttpContext上下文）
位于NSwag.AspNetCore.middleware.SwaggerDocumentMiddleware.Invoke（HttpContext上下文）
位于Microsoft.AspNetCore.Server.IIS.Core.iishttpcontextroft`1.ProcessRequestAsync（）
OperationCanceledExceptionHttpClientOperationCanceledExceptionTaskCanceledException