diff --git a/apps/iot/src/iot_app.erl b/apps/iot/src/iot_app.erl
index 80059e8..ffe015d 100644
--- a/apps/iot/src/iot_app.erl
+++ b/apps/iot/src/iot_app.erl
@@ -58,7 +58,6 @@ start_http_server() ->
         num_acceptors => Acceptors,
         shutdown => brutal_kill,
         socket_opts => [
-            {reuseaddr, true},
             {backlog, Backlog},
             {port, Port}
         ]
@@ -80,10 +79,6 @@ start_tcp_server() ->
         num_acceptors => Acceptors,
         shutdown => brutal_kill,
         socket_opts => [
-            binary,
-            {packet, 4},
-            {reuseaddr, true},
-            {active, false},
             {nodelay, false},
             {backlog, Backlog},
             {port, Port}
diff --git a/apps/iot/src/tcp/tcp_channel.erl b/apps/iot/src/tcp/tcp_channel.erl
index 2dab008..11f4eb5 100644
--- a/apps/iot/src/tcp/tcp_channel.erl
+++ b/apps/iot/src/tcp/tcp_channel.erl
@@ -66,7 +66,7 @@ start_link(Ref, Transport, Opts) ->
 init(Ref, Transport, _Opts = []) ->
     {ok, Socket} = ranch:handshake(Ref),
     lager:debug("[sdlan_channel] get a new connection: ~p", [Socket]),
-    Transport:setopts(Socket, [{active, true}]),
+    Transport:setopts(Socket, [binary, {active, true}, {packet, 4}]),
     % erlang:start_timer(?PING_TICKER, self(), ping_ticker),
     gen_server:enter_loop(?MODULE, [], #state{transport = Transport, socket = Socket}).
 
@@ -181,7 +181,7 @@ handle_info({'DOWN', _, process, HostPid, Reason}, State = #state{uuid = UUID, h
     {stop, State};
 
 handle_info(Info, State) ->
-    lager:warning("[sdlan_channel] get a unknown message: ~p, channel will closed", [Info]),
+    lager:warning("[sdlan_channel] get a unknown message: ~p, channel will closed, state: ~p", [Info, State]),
     {noreply, State}.
 
 terminate(Reason, #state{}) ->