public HttpWebResponse SendRequest(string method, string url, string referer, byte[] buffer, string contenttype, string cookies, string host)
            {
                //参考上面......
                HttpWebRequest request = WebRequest.Create(new Uri(url)) as HttpWebRequest;
                ServicePointManager.ServerCertificateValidationCallback = new System.Net.Security.RemoteCertificateValidationCallback(CheckValidationResult);
                request.Method = method;
                request.Timeout = 100000;
                //System.Net.WebProxy proxy = new WebProxy("208.77.186.166", 80);
                //request.Proxy = proxy;
                if (cookies != null && cookies.Length > 0)
                {
                    string[] cooks = cookies.Split(';');
                    foreach (string item in cooks)
                    {
                        if (item.Contains("="))
                        {
                            string[] cookie = item.Split('=');
                            string name = cookie[0].Trim();
                            string value = cookie[1].Trim();
                            this._container.Add(new Uri(host), new Cookie(name, value, "/"));
                        }
                    }
                }
                request.CookieContainer = this._container;
                if (contenttype != null && contenttype.Length > 0)
                {
                    request.ContentType = contenttype;
                }
                else
                {
                    request.ContentType = "application/x-www-form-urlencoded";
                }
                request.UserAgent = @"Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322; CIBA; .NET CLR 2.0.50727)";
                if (referer != null && referer.Length > 0)
                    request.Referer = referer;
                if (method.ToUpper() == "POST")
                {
                    if (buffer != null && buffer.Length > 0)
                    {
                        Stream stream = request.GetRequestStream();
                        stream.Write(buffer, 0, buffer.Length);
                        stream.Close();
                    }
                }
                HttpWebResponse response = request.GetResponse() as HttpWebResponse;
                //设置当前请求返回时的cookie的值
                response.Cookies = request.CookieContainer.GetCookies(request.RequestUri);
                return response;
            }