diff --git a/src/emqx_message.erl b/src/emqx_message.erl
index d4f490ed7..23ddd69d4 100644
--- a/src/emqx_message.erl
+++ b/src/emqx_message.erl
@@ -16,12 +16,24 @@
 
 -include("emqx.hrl").
 -include("emqx_mqtt.hrl").
+-include("types.hrl").
 
+%% Create
 -export([ make/2
         , make/3
         , make/4
         ]).
 
+%% Fields
+-export([ id/1
+        , qos/1
+        , from/1
+        , topic/1
+        , payload/1
+        , timestamp/1
+        ]).
+
+%% Flags
 -export([ get_flag/2
         , get_flag/3
         , set_flag/2
@@ -30,6 +42,7 @@
         , unset_flag/2
         ]).
 
+%% Headers
 -export([ get_headers/1
         , get_header/2
         , get_header/3
@@ -44,8 +57,6 @@
 
 -export([ to_map/1
         , to_list/1
-        , to_bin_key_map/1
-        , to_bin_key_list/1
         ]).
 
 -export([format/1]).
@@ -56,14 +67,17 @@
 make(Topic, Payload) ->
     make(undefined, Topic, Payload).
 
--spec(make(atom() | emqx_types:client_id(), emqx_topic:topic(), emqx_types:payload())
-      -> emqx_types:message()).
+-spec(make(atom() | emqx_types:client_id(),
+           emqx_topic:topic(),
+           emqx_types:payload()) -> emqx_types:message()).
 make(From, Topic, Payload) ->
     make(From, ?QOS_0, Topic, Payload).
 
--spec(make(atom() | emqx_types:client_id(), emqx_mqtt_types:qos(),
-           emqx_topic:topic(), emqx_types:payload()) -> emqx_types:message()).
-make(From, QoS, Topic, Payload) ->
+-spec(make(atom() | emqx_types:client_id(),
+           emqx_mqtt_types:qos(),
+           emqx_topic:topic(),
+           emqx_types:payload()) -> emqx_types:message()).
+make(From, QoS, Topic, Payload) when ?QOS_0 =< QoS, QoS =< ?QOS_2 ->
     #message{id = emqx_guid:gen(),
              qos = QoS,
              from = From,
@@ -72,6 +86,24 @@ make(From, QoS, Topic, Payload) ->
              payload = Payload,
              timestamp = os:timestamp()}.
 
+-spec(id(emqx_types:message()) -> maybe(binary())).
+id(#message{id = Id}) -> Id.
+
+-spec(qos(emqx_types:message()) -> emqx_mqtt_types:qos()).
+qos(#message{qos = QoS}) -> QoS.
+
+-spec(from(emqx_types:message()) -> atom() | binary()).
+from(#message{from = From}) -> From.
+
+-spec(topic(emqx_types:message()) -> emqx_types:topic()).
+topic(#message{topic = Topic}) -> Topic.
+
+-spec(payload(emqx_types:message()) -> emqx_types:payload()).
+payload(#message{payload = Payload}) -> Payload.
+
+-spec(timestamp(emqx_types:message()) -> erlang:timestamp()).
+timestamp(#message{timestamp = TS}) -> TS.
+
 -spec(set_flags(map(), emqx_types:message()) -> emqx_types:message()).
 set_flags(Flags, Msg = #message{flags = undefined}) when is_map(Flags) ->
     Msg#message{flags = Flags};
@@ -159,24 +191,11 @@ update_expiry(Msg) -> Msg.
 to_map(Msg) ->
     maps:from_list(to_list(Msg)).
 
-%% @doc Message to map
--spec(to_bin_key_map(emqx_types:message()) -> #{binary() => any()}).
-to_bin_key_map(Msg) ->
-    maps:from_list(to_bin_key_list(Msg)).
-
 %% @doc Message to tuple list
 -spec(to_list(emqx_types:message()) -> map()).
 to_list(Msg) ->
     lists:zip(record_info(fields, message), tl(tuple_to_list(Msg))).
 
-%% @doc Message to tuple list
--spec(to_bin_key_list(emqx_types:message()) -> map()).
-to_bin_key_list(Msg) ->
-    lists:zipwith(
-        fun(Key, Val) ->
-            {bin(Key), bin_key_map(Val)}
-        end, record_info(fields, message), tl(tuple_to_list(Msg))).
-
 %% MilliSeconds
 elapsed(Since) ->
     max(0, timer:now_diff(os:timestamp(), Since) div 1000).
@@ -191,14 +210,3 @@ format(flags, Flags) ->
     io_lib:format("~p", [[Flag || {Flag, true} <- maps:to_list(Flags)]]);
 format(headers, Headers) ->
     io_lib:format("~p", [Headers]).
-
-bin_key_map(Map) when is_map(Map) ->
-    maps:fold(fun(Key, Val, Acc) ->
-                      Acc#{bin(Key) => bin_key_map(Val)}
-              end, #{}, Map);
-bin_key_map(Data) ->
-    Data.
-
-bin(Bin) when is_binary(Bin) -> Bin;
-bin(Atom) when is_atom(Atom) -> list_to_binary(atom_to_list(Atom));
-bin(Str) when is_list(Str) -> list_to_binary(Str).
diff --git a/src/emqx_mqueue.erl b/src/emqx_mqueue.erl
index 594599daf..f13ccdd34 100644
--- a/src/emqx_mqueue.erl
+++ b/src/emqx_mqueue.erl
@@ -124,8 +124,8 @@ stats(#mqueue{max_len = MaxLen, dropped = Dropped} = MQ) ->
 
 %% @doc Enqueue a message.
 -spec(in(message(), mqueue()) -> {maybe(message()), mqueue()}).
-in(#message{qos = ?QOS_0}, MQ = #mqueue{store_qos0 = false}) ->
-    {_Dropped = undefined, MQ};
+in(Msg = #message{qos = ?QOS_0}, MQ = #mqueue{store_qos0 = false}) ->
+    {_Dropped = Msg, MQ};
 in(Msg = #message{topic = Topic}, MQ = #mqueue{default_p = Dp,
                                                p_table = PTab,
                                                q = Q,
diff --git a/src/emqx_packet.erl b/src/emqx_packet.erl
index 3e5b0ec0c..ba28bddac 100644
--- a/src/emqx_packet.erl
+++ b/src/emqx_packet.erl
@@ -140,7 +140,7 @@ publish_props(Headers) ->
 %% @doc Message from Packet
 -spec(to_message(emqx_types:credentials(), emqx_mqtt_types:packet())
       -> emqx_types:message()).
-to_message(#{client_id := ClientId, username := Username},
+to_message(#{client_id := ClientId, username := Username, peername := Peername},
            #mqtt_packet{header   = #mqtt_packet_header{type   = ?PUBLISH,
                                                        retain = Retain,
                                                        qos    = QoS,
@@ -150,7 +150,8 @@ to_message(#{client_id := ClientId, username := Username},
                         payload  = Payload}) ->
     Msg = emqx_message:make(ClientId, QoS, Topic, Payload),
     Msg#message{flags = #{dup => Dup, retain => Retain},
-                headers = merge_props(#{username => Username}, Props)}.
+                headers = merge_props(#{username => Username,
+                                        peername => Peername}, Props)}.
 
 -spec(will_msg(#mqtt_packet_connect{}) -> emqx_types:message()).
 will_msg(#mqtt_packet_connect{will_flag = false}) ->
diff --git a/src/emqx_plugins.erl b/src/emqx_plugins.erl
index ee12ed96a..af7a32f9a 100644
--- a/src/emqx_plugins.erl
+++ b/src/emqx_plugins.erl
@@ -276,7 +276,11 @@ plugin_unloaded(_Name, false) ->
     ok;
 plugin_unloaded(Name, true) ->
     case read_loaded() of
-        {ok, Names} ->
+        {ok, Names0} ->
+            Names = lists:filtermap(fun(Name1) when is_atom(Name1) -> {true, Name1};
+                                       ({Name1, true}) -> {true, Name1};
+                                       ({_Name1, false}) -> false
+                                    end, Names0),
             case lists:member(Name, Names) of
                 true ->
                     write_loaded(lists:delete(Name, Names));
@@ -306,4 +310,3 @@ write_loaded(AppNames) ->
             ?LOG(error, "[Plugins] Open File ~p Error: ~p", [File, Error]),
             {error, Error}
     end.
-
diff --git a/src/emqx_session.erl b/src/emqx_session.erl
index 3ef9107a7..2ef64c9aa 100644
--- a/src/emqx_session.erl
+++ b/src/emqx_session.erl
@@ -812,7 +812,11 @@ is_awaiting_full(#state{awaiting_rel = AwaitingRel,
 %% Dispatch messages
 %%------------------------------------------------------------------------------
 
-handle_dispatch(Msgs, State = #state{inflight = Inflight, subscriptions = SubMap}) ->
+handle_dispatch(Msgs, State = #state{inflight = Inflight,
+                                     client_id = ClientId,
+                                     username = Username,
+                                     subscriptions = SubMap}) ->
+    SessProps = #{client_id => ClientId, username => Username},
     %% Drain the mailbox and batch deliver
     Msgs1 = drain_m(batch_n(Inflight), Msgs),
     %% Ack the messages for shared subscription
@@ -823,7 +827,9 @@ handle_dispatch(Msgs, State = #state{inflight = Inflight, subscriptions = SubMap
                       SubOpts = find_subopts(Topic, SubMap),
                       case process_subopts(SubOpts, Msg, State) of
                           {ok, Msg1} -> [Msg1|Acc];
-                          ignore -> Acc
+                          ignore ->
+                              emqx_hooks:run('message.dropped', [SessProps, Msg]),
+                              Acc
                       end
               end, [], Msgs2),
     NState = batch_process(Msgs3, State),
@@ -957,7 +963,7 @@ enqueue_msg(Msg, State = #state{mqueue = Q, client_id = ClientId, username = Use
     if
         Dropped =/= undefined ->
             SessProps = #{client_id => ClientId, username => Username},
-            ok = emqx_hooks:run('message.dropped', [SessProps, Msg]);
+            ok = emqx_hooks:run('message.dropped', [SessProps, Dropped]);
         true -> ok
     end,
     State#state{mqueue = NewQ}.
diff --git a/src/emqx_stats.erl b/src/emqx_stats.erl
index 926db5b04..bec56f142 100644
--- a/src/emqx_stats.erl
+++ b/src/emqx_stats.erl
@@ -228,7 +228,7 @@ handle_info({timeout, TRef, tick}, State = #state{timer = TRef, updates = Update
     {noreply, start_timer(State#state{updates = Updates1}), hibernate};
 
 handle_info(Info, State) ->
-    ?LOG("error, [Stats] Unexpected info: ~p", [Info]),
+    ?LOG(error, "[Stats] Unexpected info: ~p", [Info]),
     {noreply, State}.
 
 terminate(_Reason, #state{timer = TRef}) ->
diff --git a/src/emqx_sys.erl b/src/emqx_sys.erl
index e5b718b05..21dfd58df 100644
--- a/src/emqx_sys.erl
+++ b/src/emqx_sys.erl
@@ -172,7 +172,7 @@ uptime(days, D) ->
 publish(uptime, Uptime) ->
     safe_publish(systop(uptime), Uptime);
 publish(datetime, Datetime) ->
-    safe_publish(systop(datatype), Datetime);
+    safe_publish(systop(datetime), Datetime);
 publish(version, Version) ->
     safe_publish(systop(version), #{retain => true}, Version);
 publish(sysdescr, Descr) ->
diff --git a/src/emqx_ws_connection.erl b/src/emqx_ws_connection.erl
index e3094e11c..92ae6a7dd 100644
--- a/src/emqx_ws_connection.erl
+++ b/src/emqx_ws_connection.erl
@@ -113,7 +113,7 @@ call(WSPid, Req) when is_pid(WSPid) ->
 %%------------------------------------------------------------------------------
 
 init(Req, Opts) ->
-    IdleTimeout = proplists:get_value(idle_timeout, Opts, 60000),
+    IdleTimeout = proplists:get_value(idle_timeout, Opts, 7200000),
     DeflateOptions = maps:from_list(proplists:get_value(deflate_options, Opts, [])),
     MaxFrameSize = case proplists:get_value(max_frame_size, Opts, 0) of
                        0 -> infinity;
diff --git a/test/emqx_bridge_SUITE.erl b/test/emqx_bridge_SUITE.erl
index 238871d05..b33a64210 100644
--- a/test/emqx_bridge_SUITE.erl
+++ b/test/emqx_bridge_SUITE.erl
@@ -87,6 +87,7 @@ t_rpc(Config) when is_list(Config) ->
         %% message from a different client, to avoid getting terminated by no-local
         Msg1 = emqx_message:make(<<"ClientId-2">>, ?QOS_2, <<"t_rpc/one">>, <<"hello">>),
         ok = emqx_session:subscribe(SPid, [{<<"forwarded/t_rpc/one">>, #{qos => ?QOS_1}}]),
+        ct:sleep(100),
         PacketId = 1,
         emqx_session:publish(SPid, PacketId, Msg1),
         ?wait(case emqx_mock_client:get_last_message(ConnPid) of
diff --git a/test/emqx_message_SUITE.erl b/test/emqx_message_SUITE.erl
index 74f6702ce..79e34bfb5 100644
--- a/test/emqx_message_SUITE.erl
+++ b/test/emqx_message_SUITE.erl
@@ -14,34 +14,38 @@
 
 -module(emqx_message_SUITE).
 
--compile(export_all).
--compile(nowarn_export_all).
-
 -include("emqx.hrl").
-
 -include("emqx_mqtt.hrl").
-
 -include_lib("eunit/include/eunit.hrl").
 
-all() ->
-    [ message_make
-    , message_flag
-    , message_header
-    , message_format
-    , message_expired
-    , message_to_map
-    ].
+-export([ t_make/1
+        , t_flag/1
+        , t_header/1
+        , t_format/1
+        , t_expired/1
+        , t_to_map/1
+        ]).
 
-message_make(_) ->
-    Msg = emqx_message:make(<<"clientid">>, <<"payload">>),
-    ?assertEqual(0, Msg#message.qos),
+-export([ all/0
+        , suite/0
+        ]).
+
+t_make(_) ->
+    Msg = emqx_message:make(<<"topic">>, <<"payload">>),
+    ?assertEqual(0, emqx_message:qos(Msg)),
+    ?assertEqual(undefined, emqx_message:from(Msg)),
+    ?assertEqual(<<"payload">>, emqx_message:payload(Msg)),
     Msg1 = emqx_message:make(<<"clientid">>, <<"topic">>, <<"payload">>),
-    ?assertEqual(0, Msg1#message.qos),
+    ?assertEqual(0, emqx_message:qos(Msg1)),
+    ?assertEqual(<<"topic">>, emqx_message:topic(Msg1)),
     Msg2 = emqx_message:make(<<"clientid">>, ?QOS_2, <<"topic">>, <<"payload">>),
-    ?assert(is_binary(Msg2#message.id)),
-    ?assertEqual(2, Msg2#message.qos).
+    ?assert(is_binary(emqx_message:id(Msg2))),
+    ?assertEqual(2, emqx_message:qos(Msg2)),
+    ?assertEqual(<<"clientid">>, emqx_message:from(Msg2)),
+    ?assertEqual(<<"topic">>, emqx_message:topic(Msg2)),
+    ?assertEqual(<<"payload">>, emqx_message:payload(Msg2)).
 
-message_flag(_) ->
+t_flag(_) ->
     Msg = emqx_message:make(<<"clientid">>, <<"topic">>, <<"payload">>),
     Msg2 = emqx_message:set_flag(retain, false, Msg),
     Msg3 = emqx_message:set_flag(dup, Msg2),
@@ -55,7 +59,7 @@ message_flag(_) ->
     ?assert(emqx_message:get_flag(dup, Msg6)),
     ?assert(emqx_message:get_flag(retain, Msg6)).
 
-message_header(_) ->
+t_header(_) ->
     Msg = emqx_message:make(<<"clientid">>, <<"topic">>, <<"payload">>),
     Msg1 = emqx_message:set_headers(#{a => 1, b => 2}, Msg),
     Msg2 = emqx_message:set_header(c, 3, Msg1),
@@ -64,10 +68,10 @@ message_header(_) ->
     Msg3 = emqx_message:remove_header(a, Msg2),
     ?assertEqual(#{b => 2, c => 3}, emqx_message:get_headers(Msg3)).
 
-message_format(_) ->
+t_format(_) ->
     io:format("~s", [emqx_message:format(emqx_message:make(<<"clientid">>, <<"topic">>, <<"payload">>))]).
 
-message_expired(_) ->
+t_expired(_) ->
     Msg = emqx_message:make(<<"clientid">>, <<"topic">>, <<"payload">>),
     Msg1 = emqx_message:set_headers(#{'Message-Expiry-Interval' => 1}, Msg),
     timer:sleep(500),
@@ -78,7 +82,7 @@ message_expired(_) ->
     Msg2 = emqx_message:update_expiry(Msg1),
     ?assertEqual(1, emqx_message:get_header('Message-Expiry-Interval', Msg2)).
 
-message_to_map(_) ->
+t_to_map(_) ->
     Msg = emqx_message:make(<<"clientid">>, ?QOS_1, <<"topic">>, <<"payload">>),
     List = [{id, Msg#message.id},
             {qos, ?QOS_1},
@@ -91,3 +95,10 @@ message_to_map(_) ->
     ?assertEqual(List, emqx_message:to_list(Msg)),
     ?assertEqual(maps:from_list(List), emqx_message:to_map(Msg)).
 
+all() ->
+    IsTestCase = fun("t_" ++ _) -> true; (_) -> false end,
+    [F || {F, _A} <- module_info(exports), IsTestCase(atom_to_list(F))].
+
+suite() ->
+    [{ct_hooks, [cth_surefire]}, {timetrap, {seconds, 30}}].
+
diff --git a/test/emqx_packet_SUITE.erl b/test/emqx_packet_SUITE.erl
index 4cb87bd18..07fb6c58d 100644
--- a/test/emqx_packet_SUITE.erl
+++ b/test/emqx_packet_SUITE.erl
@@ -100,8 +100,13 @@ packet_message(_) ->
     Msg = emqx_message:make(<<"clientid">>, ?QOS_0, <<"topic">>, <<"payload">>),
     Msg2 = emqx_message:set_flag(retain, false, Msg),
     Pkt = emqx_packet:from_message(10, Msg2),
-    Msg3 = emqx_message:set_header(username, "test", Msg2),
-    Msg4 = emqx_packet:to_message(#{client_id => <<"clientid">>, username => "test"}, Pkt),
+    Msg3 = emqx_message:set_header(
+             peername, {{127,0,0,1}, 9527},
+             emqx_message:set_header(username, "test", Msg2)
+            ),
+    Msg4 = emqx_packet:to_message(#{client_id => <<"clientid">>,
+                                    username => "test",
+                                    peername => {{127,0,0,1}, 9527}}, Pkt),
     Msg5 = Msg4#message{timestamp = Msg3#message.timestamp, id = Msg3#message.id},
     Msg5 = Msg3.