diff --git a/src/quic/sdlan_quic_transport.erl b/src/quic/sdlan_quic_transport.erl
index 7dc86e4..37fa267 100644
--- a/src/quic/sdlan_quic_transport.erl
+++ b/src/quic/sdlan_quic_transport.erl
@@ -36,9 +36,6 @@
 
     session :: sdlan_session:session(),
 
-    frames_recv = 0,
-    bytes_recv = 0,
-
     close_reason = undefined
 }).
 
@@ -159,14 +156,14 @@ handle_event(info, {quic, shutdown, Conn, ErrorCode}, _StateName, State = #state
 
 %% 处理quicer相关的信息, 需要转换成内部能够识别的frame消息
 handle_event(info, {quic, Data, Stream, _Props}, _StateName,
-    State = #state{stream = Stream, buf = Buf, max_packet_size = MaxPacketSize, bytes_recv = BytesRecv, frames_recv = FramesRecv})
+    State = #state{stream = Stream, buf = Buf, max_packet_size = MaxPacketSize})
     when is_binary(Data) ->
     case decode_frames(<<Buf/binary, Data/binary>>, MaxPacketSize) of
         {error, Reason} ->
             {stop, Reason, State};
         {ok, NBuf, Frames} ->
             Actions = [{next_event, internal, {frame, Frame}} || Frame <- Frames],
-            {keep_state, State#state{buf = NBuf, bytes_recv = BytesRecv + byte_size(Data), frames_recv = FramesRecv + length(Frames)}, Actions}
+            {keep_state, State#state{buf = NBuf}, Actions}
     end;
 
 %% 处理内部的包消息
@@ -272,21 +269,13 @@ expected_stop(Reason, State) ->
     logger:notice("[sdlan_quic_transport] expected close: ~p", [Reason]),
     {stop, normal, State#state{close_reason = Reason}}.
 
-debug_info(StateName, #state{
-    session = Session,
-    frames_recv = FramesRecv,
-    bytes_recv = BytesRecv,
-    stream_active_n = StreamActiveN,
-    heartbeat_sec = HeartbeatSec
-}) ->
+debug_info(StateName, #state{session = Session, stream_active_n = StreamActiveN, heartbeat_sec = HeartbeatSec}) ->
     ProcInfo = maps:from_list(process_info(self(), [message_queue_len, memory, reductions])),
     SessionInfo = sdlan_session:debug_info(Session),
     maps:merge(SessionInfo, ProcInfo#{
         state => StateName,
         session => SessionInfo,
-        frames_recv => FramesRecv,
         frames_sent => get_counter(quic_frames_sent),
-        bytes_recv => BytesRecv,
         bytes_sent => get_counter(quic_bytes_sent),
         stream_active_n => StreamActiveN,
         heartbeat_sec => HeartbeatSec
diff --git a/src/ssl/sdlan_ssl_transport.erl b/src/ssl/sdlan_ssl_transport.erl
index 7da46f1..582d949 100644
--- a/src/ssl/sdlan_ssl_transport.erl
+++ b/src/ssl/sdlan_ssl_transport.erl
@@ -75,10 +75,10 @@ handle_event(info, {ssl, Socket, Frame}, _StateName,
     State = #state{socket = Socket, transport = Transport, session = Session}) when is_binary(Frame) ->
     case sdlan_session:handle_frame(Frame, Session) of
         {ok, NStateName, NSession, Packets} ->
-            send_packets(Transport, Socket, Packets),
+            ssl_send(Transport, Socket, Packets),
             {next_state, NStateName, State#state{session = NSession}};
         {stop, Reason, _NStateName, NSession, Packets} ->
-            send_packets(Transport, Socket, Packets),
+            ssl_send(Transport, Socket, Packets),
             {stop, Reason, State#state{session = NSession}}
     end;
 
@@ -100,7 +100,7 @@ handle_event(info, {timeout, TimerRef, ping_ticker}, _StateName, State = #state{
 handle_event(cast, {send_event, Event}, _StateName, State = #state{socket = Socket, transport = Transport, session = Session}) ->
     case sdlan_session:send_event(Event, Session) of
         {ok, NStateName, NSession, Packets} ->
-            send_packets(Transport, Socket, Packets),
+            ssl_send(Transport, Socket, Packets),
             {next_state, NStateName, State#state{session = NSession}};
         {error, not_registered} ->
             keep_state_and_data
@@ -110,7 +110,7 @@ handle_event(cast, {send_event, Event}, _StateName, State = #state{socket = Sock
 handle_event(cast, {command, Ref, ReceiverPid, SubCommand}, _StateName, State = #state{socket = Socket, transport = Transport, session = Session}) ->
     case sdlan_session:command(Ref, ReceiverPid, SubCommand, Session) of
         {ok, NStateName, NSession, Packets} ->
-            send_packets(Transport, Socket, Packets),
+            ssl_send(Transport, Socket, Packets),
             {next_state, NStateName, State#state{session = NSession}};
         {error, not_registered} ->
             keep_state_and_data
@@ -136,10 +136,12 @@ code_change(_OldVsn, StateName, State = #state{}, _Extra) ->
 %%% Internal functions
 %%%===================================================================
 
-ssl_send(Transport, Socket, Packet) when is_binary(Packet) ->
-    Len = byte_size(Packet),
+ssl_send(_Transport, _Socket, []) ->
+    ok;
+ssl_send(Transport, Socket, Data) ->
+    Len = iolist_size(Data),
     true = Len =< 65535,
-    case Transport:send(Socket, Packet) of
+    case Transport:send(Socket, Data) of
         ok ->
             incr_counter(ssl_frames_sent, 1),
             incr_counter(ssl_bytes_sent, Len + 2),
@@ -148,9 +150,6 @@ ssl_send(Transport, Socket, Packet) when is_binary(Packet) ->
             exit({ssl_send_failed, Reason})
     end.
 
-send_packets(Transport, Socket, Packets) ->
-    lists:foreach(fun(Packet) -> ssl_send(Transport, Socket, Packet) end, Packets).
-
 expected_stop(Reason, State) ->
     logger:notice("[sdlan_ssl_transport] expected close: ~p", [Reason]),
     {stop, normal, State#state{close_reason = Reason}}.