http://www.la-pagina.com/verify_login_xbd.jspns?xbd_nocache=1197151155933

POST /verify_login_xbd.jspns?xbd_nocache=1197151155933 HTTP/1.1
Host: www.la-pagina.com
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; es-ES; rv:1.8.1.11) Gecko/20071127 Firefox/2.0.0.11
Accept: text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5
Accept-Language: es-es,es;q=0.8,en-us;q=0.5,en;q=0.3
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 300
Connection: keep-alive
Content-Type: application/x-www-form-urlencoded;
Cache-Control: no-store, no-cache, must-revalidate, no-cache
Referer: http://www.la-pagina.com/index_home.html
Content-Length: 39
Cookie: JSESSIONID=B92696775A5B68F2DC3CE1E60E0E6B63
Pragma: no-cache
A_Login=pepito&P_Password=pistola
HTTP/1.x 200 OK
Server: Apache-Coyote/1.1
Set-Cookie: JSESSIONID=112FCD15DFB7095386015F41DBF87F18; Path=/
Content-Type: text/html;charset=Latin1
Content-Length: 17
Date: Sat, 08 Dec 2007 22:07:22 GMT

string HttpPost(string uri, string parameters)
        {
            // parameters: name1=value1&name2=value2	
            WebRequest webRequest = WebRequest.Create(uri);

            webRequest.ContentType = "application/x-www-form-urlencoded";
            webRequest.Method = "POST";
            byte[] bytes = Encoding.ASCII.GetBytes(parameters);
            Stream os = null;
            try
            { // send the Post
                webRequest.ContentLength = bytes.Length;   //Count bytes to send
                os = webRequest.GetRequestStream();
                os.Write(bytes, 0, bytes.Length);         //Send it
            }
            catch (WebException ex)
            {
                string s = ex.Message;
                return s;
            }
            finally
            {
                if (os != null)
                {
                    os.Close();
                }
            }

            try
            { // get the response
                WebResponse webResponse = webRequest.GetResponse();
                if (webResponse == null)
                { return null; }
                StreamReader sr = new StreamReader(webResponse.GetResponseStream());
                return sr.ReadToEnd().Trim();
            }
            catch (WebException ex)
            {
                string r = ex.Message + "HttpPost: Response error";
                return r;
            }
            //return null;
        } // end HttpPost