aspnetcore: Framework does not handle Request cancellation properly

Is there an existing issue for this?

• I have searched the existing issues

Describe the bug

When a browser closes the connection during the active request, asp.net core raises the cancellation.

[HttpGet(Name = "GetWeatherForecast")]
    public async Task<IEnumerable<WeatherForecast>> Get(CancellationToken cancellationToken)
    {
        await Task.Delay(TimeSpan.FromSeconds(30), cancellationToken);
        /// return logic here
    }

As a result the log file is full of errors like this:

fail: Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware[1]
      An unhandled exception has occurred while executing the request.
      System.Threading.Tasks.TaskCanceledException: A task was canceled.
         at WebApplication1.Controllers.WeatherForecastController.Get(CancellationToken cancellationToken) in /Users/maximcherednik/Projects/WebApplication1/WebApplication1/Controllers/WeatherForecastController.cs:line 32
         at lambda_method5(Closure , Object )
         at Microsoft.AspNetCore.Mvc.Infrastructure.ActionMethodExecutor.AwaitableObjectResultExecutor.Execute(IActionResultTypeMapper mapper, ObjectMethodExecutor executor, Object controller, Object[] arguments)
         at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.<InvokeActionMethodAsync>g__Awaited|12_0(ControllerActionInvoker invoker, ValueTask`1 actionResultValueTask)
         at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.<InvokeNextActionFilterAsync>g__Awaited|10_0(ControllerActionInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)
         at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.Rethrow(ActionExecutedContextSealed context)
         at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted)
         at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.<InvokeInnerFilterAsync>g__Awaited|13_0(ControllerActionInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)
         at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeFilterPipelineAsync>g__Awaited|20_0(ResourceInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)
         at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeAsync>g__Awaited|17_0(ResourceInvoker invoker, Task task, IDisposable scope)
         at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeAsync>g__Awaited|17_0(ResourceInvoker invoker, Task task, IDisposable scope)
         at Microsoft.AspNetCore.Routing.EndpointMiddleware.<Invoke>g__AwaitRequestTask|6_0(Endpoint endpoint, Task requestTask, ILogger logger)
         at Microsoft.AspNetCore.Authorization.AuthorizationMiddleware.Invoke(HttpContext context)
         at Swashbuckle.AspNetCore.SwaggerUI.SwaggerUIMiddleware.Invoke(HttpContext httpContext)
         at Swashbuckle.AspNetCore.Swagger.SwaggerMiddleware.Invoke(HttpContext httpContext, ISwaggerProvider swaggerProvider)
         at Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware.Invoke(HttpContext context)

Similar question: https://stackoverflow.com/questions/69607456/unhandled-taskcancelledexception-when-request-is-aborted-by-client-in-asp-net-co

Expected Behavior

1. Framework supposed to handle the ‘OperationCancelledException’ which was raised on a CancellationTokenSource as a reaction to the cancelled request.
2. No error logging - there are no issues here, it is completely normal flow.
3. Maybe you would like to log it as debug, but please no stack traces.

Steps To Reproduce

Run the code similar to this:

[HttpGet(Name = "GetWeatherForecast")]
    public async Task<IEnumerable<WeatherForecast>> Get(CancellationToken cancellationToken)
    {
        await Task.Delay(TimeSpan.FromSeconds(30), cancellationToken);
        /// return logic here
    }

Refresh the page several times while waiting.

Exceptions (if any)

No response

.NET Version

6.0.301

Anything else?

No response