Function2.cs

using System;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Azure.WebJobs;
using Microsoft.Azure.WebJobs.Extensions.Http;
using Microsoft.AspNetCore.Http;
using Microsoft.Extensions.Logging;

namespace FunctionApp15
{
    public static class Function2
    {
        [FunctionName("Function2")]
        public static async Task<IActionResult> Run(
            [HttpTrigger(AuthorizationLevel.Function, "get", "post", Route = null)] HttpRequest req,
            CancellationToken cancellationToken,
            ILogger log)
        {
            log.LogInformation("C# HTTP trigger function processing a request.");

            log.LogInformation($"CancellationToken is {cancellationToken.CanBeCanceled}");
            
            try
            {
                await Task.Delay(TimeSpan.FromSeconds(60), cancellationToken);
            }
            catch (OperationCanceledException)
            {
                log.LogError("Cancelled");
            }

            log.LogInformation("C# HTTP trigger function processed a request.");

            return new OkResult();
        }
    }
}