 
   def handle_pdu(session, {:pdu, pdu}) do
     :ok = ESME.handle_pdu(session.esme, pdu)
-    :ok
   end
 
   def handle_socket_closed(session) do

      {:stop, reason} ->
        Logger.info("esme #{self}, being stopped by timers(#{reason})")
        Session.stop(st.session)
      {:enquire_link, new_timers} ->
        new_st = %ESME{ timers: new_timers, time: time }
        do_send_enquire_link(new_st)

      false ->
        Logger.info("esme #{self}, bind failed with status #{Pdu.command_status(pdu)}, stopping")
        Session.stop(st.session)
        {:reply, :ok, st}
    end
  end

