diff --git a/src/ssl/sdlan_ssl_transport.erl b/src/ssl/sdlan_ssl_transport.erl
index 58cbb6a..ac09747 100644
--- a/src/ssl/sdlan_ssl_transport.erl
+++ b/src/ssl/sdlan_ssl_transport.erl
@@ -29,9 +29,6 @@
 
     session :: sdlan_session:session(),
 
-    frames_recv = 0,
-    bytes_recv = 0,
-
     close_reason = undefined
 }).
 
@@ -63,8 +60,7 @@ callback_mode() ->
     handle_event_function.
 
 handle_event(info, {handshake, Ref, Transport, Socket, Timeout}, handshaking,
-    State = #state{ref = Ref, transport = Transport, max_packet_size = MaxPacketSize,
-        heartbeat_sec = HeartbeatSec}) ->
+    State = #state{ref = Ref, transport = Transport, max_packet_size = MaxPacketSize, heartbeat_sec = HeartbeatSec}) ->
     case Transport:handshake(Socket, [], Timeout) of
         {ok, SslSocket} ->
             ok = Transport:setopts(SslSocket, [{mode, binary}, {packet, 2}, {active, true}]),
@@ -75,19 +71,8 @@ handle_event(info, {handshake, Ref, Transport, Socket, Timeout}, handshaking,
             {stop, {ssl_handshake_failed, Reason}, State}
     end;
 
-handle_event(info, {ssl, Socket, Data}, _StateName,
-    State = #state{socket = Socket, bytes_recv = BytesRecv, frames_recv = FramesRecv}) when is_binary(Data) ->
-    {keep_state, State#state{bytes_recv = BytesRecv + byte_size(Data), frames_recv = FramesRecv + 1},
-        [{next_event, internal, {frame, Data}}]};
-
-handle_event(info, {ssl_closed, Socket}, _StateName, State = #state{socket = Socket}) ->
-    expected_stop(socket_closed, State);
-
-handle_event(info, {ssl_error, Socket, Reason}, _StateName, State = #state{socket = Socket}) ->
-    expected_stop({socket_error, Reason}, State);
-
-%% 处理内部的包消息
-handle_event(internal, {frame, Frame}, StateName, State = #state{socket = Socket, transport = Transport, session = Session}) ->
+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, NSession, Packets} ->
             send_packets(Transport, Socket, Packets),
@@ -97,6 +82,12 @@ handle_event(internal, {frame, Frame}, StateName, State = #state{socket = Socket
             {stop, Reason, State#state{session = NSession}}
     end;
 
+handle_event(info, {ssl_closed, Socket}, _StateName, State = #state{socket = Socket}) ->
+    expected_stop(socket_closed, State);
+
+handle_event(info, {ssl_error, Socket, Reason}, _StateName, State = #state{socket = Socket}) ->
+    expected_stop({socket_error, Reason}, State);
+
 handle_event(info, {timeout, TimerRef, ping_ticker}, _StateName, State = #state{session = Session}) ->
     case sdlan_session:handle_timeout(TimerRef, Session) of
         {ok, NSession} ->
@@ -167,20 +158,13 @@ expected_stop(Reason, State) ->
 next_state_name(_StateName, Session) ->
     sdlan_session:state_name(Session).
 
-debug_info(StateName, #state{
-    session = Session,
-    frames_recv = FramesRecv,
-    bytes_recv = BytesRecv,
-    heartbeat_sec = HeartbeatSec
-}) ->
+debug_info(StateName, #state{session = Session, 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(ssl_frames_sent),
-        bytes_recv => BytesRecv,
         bytes_sent => get_counter(ssl_bytes_sent),
         heartbeat_sec => HeartbeatSec
     }).