code: private void getConnInput() throws IOException
    {
      if (_didGet)
        return;
  
      try {
        getConnInputImpl();
      } catch (IOException e) {
        _isKeepalive = false;
        throw e;
      } catch (RuntimeException e) {
        _isKeepalive = false;
        throw e;
      }
    }
docs: Sends the request and initializes the response.