Access rss feed for sharepoint list programmatically

After googling, I got the code to access rss feed for sharepoint list as follows:

protected static void GetRSS(string ListRssUrl, SPWeb oWeb)
        {
            string rss_text = string.Empty;
            string title = string.Empty;
            string link = string.Empty;
            string description = string.Empty;
            string athr = string.Empty;
            string pub = string.Empty;
           
            XPathDocument doc = new XPathDocument(ListRssUrl);
            XPathNavigator nav = doc.CreateNavigator();
            XPathNodeIterator items = nav.Select("//item");
            while (items.MoveNext())
            {
                XPathNavigator navCurrent = items.Current;
                title = navCurrent.SelectSingleNode("title").InnerXml;
                link = navCurrent.SelectSingleNode("link").InnerXml;
                description = navCurrent.SelectSingleNode("description").InnerXml;
                athr = navCurrent.SelectSingleNode("author").InnerXml;
                pub = navCurrent.SelectSingleNode("pubDate").InnerXml;
            }
        }

//To get rss feed url use the below code.

using (SPSite oSite = new SPSite("<Site URL>"))
                {
                    using (SPWeb oWeb = oSite.OpenWeb())
                    {
                        SPList list = oWeb.Lists["Contributor"];
                        string ListRssUrl = oWeb.Url + "/_layouts/listfeed.aspx?list=" + list.ID;
                        GetRSS(ListRssUrl, oWeb);
                    }
                }

For List rss feed, roy need to enable Anonymous access. There is a good Link for this
Click here to view How to enable Anonymous access.
I have get very good reference here for rss feed.