Program.cs

static void Main()
{
    var statuses = GetCodeStatuses();
    foreach (var status in statuses)
    {
        Console.WriteLine(status);
        Task.Delay(1000).Wait();
    }
}

static IEnumerable<int> GetCodeStatuses()
{
    while (true)
    {
        using (var http = new HttpClient())
        {
            var response = http.GetAsync("http://google.com").Result;
            yield return (int) response.StatusCode;
        }
    }
}