Unauthorized (401) when calling one localhost website from another - asp.net

Question

I have two websites set up on my local system running IIS 5.1 (on localhost). I am calling one website from another. I am working with ASP.NET, C# 2.0.
public static String executeWebRequest(string url, Boolean esmRequest)
{
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
UTF8Encoding encoding = new UTF8Encoding();
Stream requestStream = null;
HttpWebResponse response = null;
StreamReader responseStream = null;
string responseString;
try
{
//post request
request.Method = "POST";
if (esmRequest)
{
//request.UseDefaultCredentials = true;
request.Credentials = new NetworkCredential(ConfigurationManager.AppSettings["ESMServerUserName"], ConfigurationManager.AppSettings["ESMServerPassword"]);
}
else
{
//request.UseDefaultCredentials = true;
request.Credentials = new NetworkCredential(ConfigurationManager.AppSettings["ESMServerUserName"], ConfigurationManager.AppSettings["ESMServerPassword"]);
}
requestStream = request.GetRequestStream();
requestStream.Write(new byte[0], 0, 0);
requestStream.Close();
//get response
response = (HttpWebResponse)request.GetResponse();
responseStream = new StreamReader(response.GetResponseStream(), encoding);
responseString = responseStream.ReadToEnd();
}
catch (Exception ex)
{
throw ex;
}
finally
{
if (requestStream != null)
{
requestStream.Close();
}
if (response != null)
{
response.Close();
}
if (responseStream != null)
{
responseStream.Close();
}
}
return responseString;
}
}
I run this code and get a 401 HTTP status code. 1 errorm whereas when I paste the same URL in the browser it executes perfectly.
I already have DisableLoopbackCheck enabled using http://support.microsoft.com/kb/89686/en-us
How can I resolve this?

Answer 1

I was able to fix it with this change
var cache = new CredentialCache();
NetworkCredential credential = new NetworkCredential(ConfigurationManager.AppSettings["ESMServerUserName"], ConfigurationManager.AppSettings["ESMServerPassword"]);
cache.Add(new Uri(url), "Basic", credential);
request.Credentials = cache;