GCMComminication错误底层连接已关闭在发送时发生意外错误

Question

我遇到错误：在tRequest.GetResponse（）引发异常时出现错误：“底层连接已关闭，使用下面的代码时发生了意外错误” ;

  WebRequest tRequest = WebRequest.Create("https://android.googleapis.com/gcm/send"); 
      tRequest.Method = "post"; 
      tRequest.ContentType = " application/x-www-form-urlencoded;charset=UTF-8"; 
      tRequest.Headers.Add(string.Format("Authorization: key={0}", applicationID)); 

      int iRetryTime = 1; 
      if (NotificationRetryTime > 10) 
       iRetryTime = NotificationRetryTime - 10; 


      string postData = 
       "collapse_key=score_update&time_to_live=" + iRetryTime.ToString() + "&delay_while_idle=0&data.message=" 
        + value + "&data.time=" + System.DateTime.Now.ToString() + "&registration_id=" + 
        regId + ""; 




      Byte[] byteArray = Encoding.UTF8.GetBytes(postData); 
      tRequest.ContentLength = byteArray.Length; 
      Stream dataStream = tRequest.GetRequestStream(); 
      dataStream.Write(byteArray, 0, byteArray.Length); 
      dataStream.Close(); 

      WebResponse tResponse = tRequest.GetResponse(); 

      dataStream = tResponse.GetResponseStream(); 
      StreamReader tReader = new StreamReader(dataStream); 
      String sResponseFromServer = tReader.ReadToEnd(); //Get response from GCM server. 

      tReader.Close(); 
      dataStream.Close(); 
      tResponse.Close(); 

Answer 1

事实证明，我们的网络团队在网络层面阻止gcm。网络配置更改后，我已成功进行gcm呼叫。