anchor.diff:  handle_call({set_protocol_conf, Handler, Opts, GracefulTimeout}, _From,
               #state{conn_managers=Managers,
                      nb_acceptors=Nb,
  -                   acceptors=Acceptors}=State) ->
  +                   acceptors=Acceptors,
  +                   sleepers=Sleepers}=State) ->
   
       [{Pid, _} | _] = Managers,
       State1 = State#state{protocol={Handler, Opts,
  
positive.code:     %% kill old acceptors,
      [catch exit(AcceptorPid, normal) || AcceptorPid <- Acceptors],
  
  
      {ok, NewConnMgr} = barrel_connections:start(),
  
  
negative.code: handle_call(get_protocol_conf, _From,
              #state{protocol={Handler,Opts, _}}=State) ->
      {reply, {Handler, Opts}, State};
  
  handle_call(_Msg, _From, State) ->
      {reply, ok, State}.
  