WEBHttpRequest

public string Url { get; set; }  
        public string Refer { get; set; }
        public string Method { get; set; }
        public string PostData { get; set; }
        object obj = new object();

       public WEBHttpRequest() { }
       public WEBHttpRequest(string loginUrl, string refer, string method, string postData)
        {
            Url = loginUrl;
            Refer = refer;
            Method = method;
            PostData = postData;
        }


        public void SendAutoDataToServer(Action<string> callback, bool IsKeepAlive, bool IsAllowAutoRedirect)
        {
            lock (obj)
            {
                HttpWebRequest httpWebRequest;
                byte[] byteArray = Encoding.ASCII.GetBytes(PostData);

                //基于apache服务器,IIS发布的则不需要  
                ServicePointManager.Expect100Continue = false;

                //创建对url的请求  
                httpWebRequest = (HttpWebRequest)WebRequest.Create(Url);
                httpWebRequest.Referer = Refer;
                
                httpWebRequest.Accept = "*/*";
                httpWebRequest.Accept = "image/gif, image/jpeg, image/pjpeg, image/pjpeg, application/QVOD, application/QVOD, application/xaml+xml, application/x-ms-xbap, application/x-ms-application, application/vnd.ms-xpsdocument, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, */*";
                httpWebRequest.Headers["Accept-Language"] = "zh-cn";
                httpWebRequest.UserAgent = "Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; WOW64; Trident/6.0;)";
                httpWebRequest.ContentType = "application/x-www-form-urlencoded";
                httpWebRequest.KeepAlive = IsKeepAlive;
              
                httpWebRequest.Headers["Cache-Control"] = "no-cache";
                httpWebRequest.AllowAutoRedirect = IsAllowAutoRedirect;
                //协议方式  
                httpWebRequest.Method = Method;
                httpWebRequest.Timeout = 20000;
                //忽略证书
                System.Net.ServicePointManager.ServerCertificateValidationCallback += (se, cert, chain, sslerror) =>
                {
                    return true;
                };
                //post开始  
                //请求内容长度
                if (httpWebRequest.Method == "POST" || httpWebRequest.Method == "post")
                {
                    try
                    {
                        httpWebRequest.ContentLength = byteArray.Length;
                    
                        httpWebRequest.BeginGetRequestStream((a) =>
                        {
                            try
                            {
                                using (Stream datasStream = httpWebRequest.EndGetRequestStream(a))
                                {
                                    datasStream.Write(byteArray, 0, byteArray.Length);
                                    //异步返回html  
                                    httpWebRequest.BeginGetResponse((ar) =>
                                    {
                                        try
                                        {
                                            using (var webresponse = (HttpWebResponse)httpWebRequest.EndGetResponse(ar))
                                            {
                                                using (var stream = webresponse.GetResponseStream())
                                                {
                                                    using (var sr = new StreamReader(stream))
                                                    {
                                                        callback(sr.ReadToEnd());
                                                    }
                                                }
                                            }
                                        }
                                        catch (Exception e) { callback(e.ToString());  }
                                        finally { httpWebRequest.Abort(); }
                                    }, null);
                                }
                            }
                            catch (Exception e) { callback(e.ToString());  return; }
                        }, null);
                    }
                    catch (Exception e) { callback(string.Empty); return; }

                }
                else
                {
                    //异步返回html  
                    httpWebRequest.BeginGetResponse((ar) =>
                    {
                        try
                        {
                            using (var webresponse = (HttpWebResponse)httpWebRequest.EndGetResponse(ar))
                            {
                                using (var stream = webresponse.GetResponseStream())
                                {
                                    using (var sr = new StreamReader(stream))
                                    {
                                        callback(sr.ReadToEnd());
                                    }
                                }
                            }
                        }
                        catch (Exception e) { callback(string.Empty); }
                        finally { httpWebRequest.Abort(); }
                    }, null);
                }
            }
        }