C#

gistfile1.cs

using System;
using System.Net;

namespace TeamEXtension
{
	public class UrlPing
	{
		public static void Main(string[] args)
		{
			string urlString = "http://pshmn.com/eaFnY";

			try {
				HttpWebRequest request = (HttpWebRequest) WebRequest.Create(urlString);
				HttpWebResponse response = (HttpWebResponse) request.GetResponse();
			}
			catch (Exception e) {
				// log error
			}
		}
	}
}

Simpler implementation:

public string Ping(string url)
{
    using (var webClient = new WebClient())
    {
        return webClient.DownloadString(url);
    }
}