using System;

using System.Collections.Generic;

using System.Linq;

using Polly.Contrib.WaitAndRetry;

​

class Program

{

    static void Main(string[] args)

    {

        // Test parameters

        int retryAttempt = 3;

        TimeSpan maxDelay = TimeSpan.FromSeconds(30);

        // Test the DefaultRetryDuration method

        TimeSpan result = DefaultRetryDuration(retryAttempt, maxDelay);

        // Output the result

        Console.WriteLine($"Retry Attempt: {retryAttempt}");

        Console.WriteLine($"Max Delay: {maxDelay}");

        Console.WriteLine($"Retry Duration: {result}");

    }

​

    private static TimeSpan DefaultRetryDuration(int retryAttempt, TimeSpan maxDelay)

    {

        var medianFirstRetryDelay = TimeSpan.FromSeconds(Math.Pow(2, retryAttempt));

        var backoffDurations = Backoff.DecorrelatedJitterBackoffV2(medianFirstRetryDelay: medianFirstRetryDelay, retryCount: retryAttempt);

        var limitedDurations = backoffDurations.Select(s => TimeSpan.FromTicks(Math.Min(s.Ticks, maxDelay.Ticks))).OrderBy(s => s.Ticks).Take(retryAttempt + 1).ToList();

        if (limitedDurations.Count() <= 0)

            return medianFirstRetryDelay;

        return limitedDurations.Last();

    }

​

    private static TimeSpan OldDefaultRetryDuration(int retryAttempt, TimeSpan maxDelay)

    {

        var medianFirstRetryDelay = TimeSpan.FromSeconds(Math.Pow(2, retryAttempt));

        return Backoff.DecorrelatedJitterBackoffV2(medianFirstRetryDelay: medianFirstRetryDelay, retryCount: retryAttempt).Select(s => TimeSpan.FromTicks(Math.Min(s.Ticks, maxDelay.Ticks))).OrderBy(s => s.Ticks).ElementAt(retryAttempt);

    }

}