using System;

using System.Net.Http;

using System.Threading;

using System.Threading.Tasks;

using Polly;

using Polly.Timeout;

public class Program

{

    static HttpClient client = new HttpClient();

    static async Task Main(string[] args)

    {

        const int timeoutMs = 3000;

        const int retryBackOffMs = 1000;

​

        // Timeout policy

        var timeoutPolicy = Policy.TimeoutAsync(TimeSpan.FromMilliseconds(timeoutMs), TimeoutStrategy.Optimistic,

                                                (context, timeSpan, task, ex) =>

                                                {

                                                    Console.WriteLine($"Timeout {timeSpan.TotalSeconds} seconds");

​

                                                    return Task.CompletedTask;

                                                });

​

        // Wrap timeout policy with retry

        var retryPolicy = Policy

            .Handle<Exception>(ex =>

                               {

                                   Console.WriteLine($"Exception tralal: {ex.Message}");

                                   return true;

                                   //return !cancellationToken.IsCancellationRequested;

                               })

            .WaitAndRetryAsync(3, _ => TimeSpan.FromMilliseconds(retryBackOffMs),

                               (Exception ex, TimeSpan calculatedWaitDuration, int retryCount, Context _) =>

                               {

                                   Console.WriteLine(

                                       $"Retrying in {calculatedWaitDuration.TotalSeconds} seconds (Reason: {ex.Message}) (Retry count: {retryCount})");

                               })

            .WrapAsync(timeoutPolicy);

​

        await retryPolicy.ExecuteAsync(async (ct) =>

                                       {

                                           Console.WriteLine("The request is sent out");

                                           await client.GetAsync("https://httpstat.us/200?sleep=5000", ct);

                                       }, CancellationToken.None);

    }

}