C#调取接口时报错：服务器提交了协议冲突. Section=ResponseStatusLine

  private Dictionary<string, Object> GetLocation(string imei)
        {
            #region===代码===
            string serviceAddress = string.Format("http://localhost/api/car/getlastinfo?imei={0}&key=xxxxx",imei);
            HttpWebRequest req = (HttpWebRequest)WebRequest.Create(serviceAddress);
            req.Method = "get";
            req.KeepAlive = false;  8             var resp = new StreamReader(((HttpWebResponse)req.GetResponse()).GetResponseStream(), Encoding.GetEncoding("utf-8"));
            string res = resp.ReadToEnd();
            resp.Close();
            Dictionary<string, Object> dic = null;
            if (res != "")
            {
                dic = JsonConvert.DeserializeObject<Dictionary<string, Object>>(res);
            }
            return dic;
            #endregion===代码===
        }

解决：设置  req.KeepAlive = false;