MARKUS

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

namespace Markus.Service.Extensions

{

   public static  class SytemNet

    {

        public static bool Ping(string uri)

        {

            bool result = false;

            try

            {

                using (System.Net.Http.HttpClient Client = new System.Net.Http.HttpClient())

                {

                    var task = Client.GetAsync(uri);

                    if (!task.IsFaulted)

                    {

                        System.Net.Http.HttpResponseMessage responseMessage = task.Result;

                        System.Net.HttpStatusCode StatusCode = responseMessage.StatusCode;

                        switch (StatusCode)

                        {

                            case System.Net.HttpStatusCode.Accepted:

                            case System.Net.HttpStatusCode.OK:

                                result = true;

                                break;

                        }

                    }

                }

            }

            catch (AggregateException ae)

            {

                foreach (var e in ae.InnerExceptions)

                {

                    // Handle the custom exception.

                    if (e is CustomException)

                    {

                        Console.WriteLine(e.Message);

                    }

                    // Rethrow any other exception.

                    else

                    {

                        Console.WriteLine(uri + " Connection Error");

                    }

                }

            }

            catch (Exception)

            {

            }

            return result;

        }

    }

    public class CustomException : Exception

    {

        public CustomException(String message) : base(message)

        { }

    }

}