有懂淘宝平台主动业务推送的吗？求指教

[cobra009]

我现在在做主动消息通知这一块

TopDictionary txtParams = new TopDictionary();
        txtParams.Add("app_key", appkey);
        txtParams.Add("timestamp", System.DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss"));

        HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create("http://stream.api.taobao.com/stream");
        string sign = TopUtils.SignTopRequest(txtParams, appsecret, true);
        req.ContentType = "application/x-www-form-urlencoded; charset=utf-8";
        req.Method = "POST";
        string param = "app_key=" + appkey + "&sign=" + sign.ToUpper() + "×tamp=" + System.DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss");
        byte[] bs = Encoding.UTF8.GetBytes(param);
        req.ContentLength = bs.Length;
        Stream reqStream = req.GetRequestStream();
        reqStream.Write(bs, 0, bs.Length);
        HttpWebResponse wr;
        try
        {
            wr = (HttpWebResponse)req.GetResponse();
            Console.WriteLine(wr.StatusCode.ToString());
            StreamReader str = new StreamReader(wr.GetResponseStream(), Encoding.UTF8);

            //IncrementCustomerPermitRequest inc = new IncrementCustomerPermitRequest();
            //IncrementCustomerPermitResponse increq = client.Execute(inc, Session["sessionKey"].ToString());

        }
        catch (Exception ex)
        {
            Response.Write(ex.Message);
        }

总是被CATCH到远程服务器返回错误: (400) 错误的请求。
具体是在wr = (HttpWebResponse)req.GetResponse();被CATCH的
代码在淘宝平台被确认是正确的，别人能够连接，可能是我的操作步骤有问题，谁有具体的步骤啊？

[cobra009]

在线等，急用啊！~~

[nbgcqlk]

步骤没错。淘宝那边有没有错误的详细解释？？例如sign验证没通过？或者一次最多传输数据量的限制。。。。。帮顶了。。。

[flashrhx2010]

你缺少一个ID参数，多看看淘宝帮助吧

[flashrhx2010]

你缺少一个ID参数，多看看淘宝帮助吧