getsmarx.cs

using System;
using System.Diagnostics;
using System.Linq;
using System.Net;
using System.Xml.Linq;

namespace getsmarx
{
    public static class StringExtensions
    {
        public static string Right(this string source, int count)
        {
            return source.Substring(source.Length - count);
        }

        public static string Left(this string source, int count)
        {
            return source.Substring(0, count);
        }
    }

    class Program
    {
        static Random _random = new Random();
        static readonly int GUID_LENGTH = 36;
        static void Main(string[] args)
        {
            WebClient c = new WebClient();
            string data = c.DownloadString("http://annoysmarx.cloudapp.net/");
            

            XDocument x = XDocument.Parse(data);
            
            XNamespace ns = "http://www.w3.org/1999/xhtml";
            var anchors = x.Descendants(ns + "a")
                .Select(a => a.Attributes("href")
                    .FirstOrDefault().Value)
                    .ToList();
            
            var anchor = anchors[_random.Next(0, anchors.Count() - 1)];
            var id = anchor.Right(GUID_LENGTH);
            

            var response = c.DownloadString(anchor);

            Debug.Assert(response.Contains(id));
            

        }
    }
}