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Fix will retain checking (#2820) 

Fix will retain checking and handle the retained flag correctly
This commit is contained in:
tigercl 2019-08-22 16:12:14 +08:00 committed by GitHub
parent 68f6a43492
commit b4bbfad415
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 15 additions and 12 deletions
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5
src/emqx_packet.erl
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@ -162,10 +162,11 @@ will_msg(#mqtt_packet_connect{client_id = ClientId,
will_qos = QoS,
will_topic = Topic,
will_props = Properties,
will_payload = Payload}) ->
will_payload = Payload,
proto_ver = ProtoVer}) ->
Msg = emqx_message:make(ClientId, QoS, Topic, Payload),
Msg#message{flags = #{dup => false, retain => Retain},
headers = merge_props(#{username => Username}, Properties)}.
headers = merge_props(#{username => Username, proto_ver => ProtoVer}, Properties)}.
merge_props(Headers, undefined) ->
Headers;

8
src/emqx_protocol.erl
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@ -562,10 +562,10 @@ connack({ReasonCode, PState = #pstate{proto_ver = ProtoVer, credentials = Creden
%%------------------------------------------------------------------------------
do_publish(Packet = ?PUBLISH_PACKET(QoS, PacketId),
PState = #pstate{session = SPid, credentials = Credentials}) ->
PState = #pstate{session = SPid, credentials = Credentials, proto_ver = ProtoVer}) ->
Msg = emqx_mountpoint:mount(mountpoint(Credentials),
emqx_packet:to_message(Credentials, Packet)),
puback(QoS, PacketId, emqx_session:publish(SPid, PacketId, emqx_message:set_flag(dup, false, Msg)), PState).
puback(QoS, PacketId, emqx_session:publish(SPid, PacketId, emqx_message:set_flag(dup, false, emqx_message:set_header(proto_ver, ProtoVer, Msg))), PState).
%%------------------------------------------------------------------------------
%% Puback -> Client
@ -834,8 +834,8 @@ check_will_retain(#mqtt_packet_connect{will_retain = false, proto_ver = ?MQTT_PR
ok;
check_will_retain(#mqtt_packet_connect{will_retain = true, proto_ver = ?MQTT_PROTO_V5}, #pstate{zone = Zone}) ->
case emqx_zone:get_env(Zone, mqtt_retain_available, true) of
true -> {error, ?RC_RETAIN_NOT_SUPPORTED};
false -> ok
true -> ok;
false -> {error, ?RC_RETAIN_NOT_SUPPORTED}
end;
check_will_retain(_Packet, _PState) ->
ok.

14
src/emqx_session.erl
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@ -877,12 +877,14 @@ process_subopts([{qos, SubQoS}|Opts], Msg = #message{qos = PubQoS}, State = #sta
true -> process_subopts(Opts, Msg#message{qos = max(SubQoS, PubQoS)}, State);
false -> process_subopts(Opts, Msg#message{qos = min(SubQoS, PubQoS)}, State)
end;
process_subopts([{rap, _Rap}|Opts], Msg = #message{flags = Flags, headers = #{retained := true}}, State = #state{}) ->
process_subopts(Opts, Msg#message{flags = maps:put(retain, true, Flags)}, State);
process_subopts([{rap, 0}|Opts], Msg = #message{flags = Flags}, State = #state{}) ->
process_subopts(Opts, Msg#message{flags = maps:put(retain, false, Flags)}, State);
process_subopts([{rap, _}|Opts], Msg, State) ->
process_subopts(Opts, Msg, State);
process_subopts([{rap, 0}|Opts], Msg = #message{flags = Flags, headers = #{proto_ver := ?MQTT_PROTO_V5}}, Session) ->
process_subopts(Opts, Msg#message{flags = maps:put(retain, false, Flags)}, Session);
process_subopts([{rap, _}|Opts], Msg = #message{headers = #{proto_ver := ?MQTT_PROTO_V5}}, Session) ->
process_subopts(Opts, Msg, Session);
process_subopts([{rap, _}|Opts], Msg = #message{headers = #{retained := true}}, Session = #session{}) ->
process_subopts(Opts, Msg, Session);
process_subopts([{rap, _}|Opts], Msg = #message{flags = Flags}, Session) ->
process_subopts(Opts, Msg#message{flags = maps:put(retain, false, Flags)}, Session);
process_subopts([{subid, SubId}|Opts], Msg, State) ->
process_subopts(Opts, emqx_message:set_header('Subscription-Identifier', SubId, Msg), State).