Обход 503 ошибки сервера

static void Main(string[] args)
 
 { 
 
          var httpWebRequest = (HttpWebRequest)WebRequest.Create("http://www.google.ru/sorry/Captcha?continue=http%3A%2F%2Fwww.google.ru%2Fsearch%3Fq%3D%25D1%2581%25D0%25B5%25D0%25BE%25D0%25BF%25D1%2583%25D0%25BB%25D1%258C%25D1%2582%25D1%2583%25D1%2581%26channel%3Dlinkdoctor&id=10783499217868175628&captcha=2119579&submit=%D0%9E%D1%82%D0%BF%D1%80%D0%B0%D0%B2%D0%B8%D1%82%D1%8C");           
 
httpWebRequest.AllowAutoRedirect = true;   
 
httpWebRequest.CookieContainer = new CookieContainer();   
 
 if (Cooks != null)
 
{              
 
httpWebRequest.CookieContainer.Add(Cooks); 
 
}           
 
HttpWebResponse httpWebResponse = (HttpWebResponse)httpWebRequest.GetResponse();         httpWebResponse.Cookies = httpWebRequest.CookieContainer.GetCookies(httpWebRequest.RequestUri);   
 
{            
 
  Cooks.Add(httpWebResponse.Cookies);
 
} 
 
Stream stream = httpWebResponse.GetResponseStream(); 
 
if (stream != null) 
 
 { 
 
 var reader = new StreamReader(stream); 
 
 Console.Write(reader.ReadToEnd());  
 
  } 
 
}

System.Net.WebRequest reqGET = System.Net.WebRequest.Create(@"http://site.ru/");
System.Net.WebResponse resp = reqGET.GetResponse();
System.IO.Stream stream = resp.GetResponseStream();
System.IO.StreamReader sr = new System.IO.StreamReader(stream);
string s = sr.ReadToEnd();
Console.WriteLine(s);

try
{
    HttpWebResponse httpWebResponse = (HttpWebResponse)httpWebRequest.GetResponse(); httpWebResponse.Cookies = httpWebRequest.CookieContainer.GetCookies(httpWebRequest.RequestUri);
}
catch (WebException err)
{
    HttpWebResponse errorWebResponse = (HttpWebResponse)err.Response;
    Stream stream = errorWebResponse.GetResponseStream(); 
    // и т.д.
}