C# Application CookieContainer

[DonBytes]

Wondering if anyone had problems with the CookieContainers, I was making a program that logs onto sites, check for news and then reports back.

All cookies domain in response.cookies is marked as site.com except for one that is marked as .site.com for some reason this doesn't make it back to http://site.com when I try to check the messages page after doing the login.

If I override the WebResponse in WebClient and add a copy of that cookie without the initial dot all is well and I get my result. However this is not nice as I get extra cookies so I was wondering if anyone knew why?

[DonBytes]

To explain further:

public class WebClientEx : WebClient
    {
        private CookieContainer cookies = new CookieContainer();
 
        protected override WebRequest GetWebRequest(Uri address)
        {
            WebRequest retVal = base.GetWebRequest(address);
 
            if (retVal.GetType() == typeof(HttpWebRequest))
            {
                ((HttpWebRequest)retVal).CookieContainer = cookies;
            }
 
            return retVal;
        }
 
        protected override WebResponse GetWebResponse(WebRequest request)
        {
            WebResponse retVal = base.GetWebResponse(request);
 
            if (retVal.GetType() == typeof(HttpWebResponse))
            {
                foreach (Cookie c in ((HttpWebResponse)retVal).Cookies)
                {
                    if (c.Domain.StartsWith("."))
                    {
                        c.Domain = c.Domain.Substring(1);
                        cookies.Add(c);
                    }
                }
            }
 
            return retVal;
        }
    }

Not sure why the stuff in GetWebResponse has to be done but without it it doesn't work to login on some sites. So I am curious if someone knows what is different in WebClient from a Browser regarding cookie handling.