FarmMapsApiClient_WURtest/FarmmapsApi/Extensions.cs

using System;
using System.Threading;
using System.Threading.Tasks;

namespace FarmmapsApi
{
    public static class Extensions
    {
        public static async Task PollTask(TimeSpan retryTime, Func<CancellationTokenSource, Task> callback)
        {
            var tokenSource = new CancellationTokenSource();
            var token = tokenSource.Token;
            do
            {
                try
                {
                    await callback(tokenSource);
                    await Task.Delay(retryTime, token);
                }
                catch
                {
                    tokenSource.Cancel();
                }
            } while (!token.IsCancellationRequested);
        }
    }
}