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;
             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;