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Merge pull request #1420 from HJianBo/issue_1216 

Fix issue #1216
This commit is contained in:
Feng Lee 2018-01-07 14:02:54 +08:00 committed by GitHub
parent fde905d754 5fbbff46b1
commit bfa9fc675c
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 13 additions and 4 deletions
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17
src/emqttd_session.erl
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@ -453,6 +453,8 @@ handle_cast({pubrel, PacketId}, State = #state{awaiting_rel = AwaitingRel}) ->
{noreply,
case maps:take(PacketId, AwaitingRel) of
{Msg, AwaitingRel1} ->
%% Implement Qos2 by method A [MQTT 4.33]
%% Dispatch to subscriber when received PUBREL
spawn(emqttd_server, publish, [Msg]), %%:)
gc(State#state{awaiting_rel = AwaitingRel1});
error ->
@ -628,8 +630,10 @@ retry_delivery(Force, [{Type, Msg, Ts} | Msgs], Now,
redeliver(Msg, State),
Inflight1 = Inflight:update(PacketId, {publish, Msg, Now}),
retry_delivery(Force, Msgs, Now, State#state{inflight = Inflight1});
{pubrel, PacketId} -> %% remove 'pubrel' directly?
retry_delivery(Force, Msgs, Now, State#state{inflight = Inflight:delete(PacketId)})
{pubrel, PacketId} ->
redeliver({pubrel, PacketId}, State),
Inflight1 = Inflight:update(PacketId, {pubrel, PacketId, Now}),
retry_delivery(Force, Msgs, Now, State#state{inflight = Inflight1})
end;
true ->
State#state{retry_timer = start_timer(Interval - Diff, retry_delivery)}
@ -649,11 +653,13 @@ expire_awaiting_rel(State = #state{awaiting_rel = AwaitingRel}) ->
expire_awaiting_rel([], _Now, State) ->
State#state{await_rel_timer = undefined};
expire_awaiting_rel([{PacketId, #mqtt_message{timestamp = TS}} | Msgs],
expire_awaiting_rel([{PacketId, Msg = #mqtt_message{timestamp = TS}} | Msgs],
Now, State = #state{awaiting_rel = AwaitingRel,
await_rel_timeout = Timeout}) ->
case (timer:now_diff(Now, TS) div 1000) of
Diff when Diff >= Timeout ->
?LOG(warning, "Dropped Qos2 Message for await_rel_timeout: ~p", [Msg], State),
emqttd_metrics:inc('messages/qos2/dropped'),
expire_awaiting_rel(Msgs, Now, State#state{awaiting_rel = maps:remove(PacketId, AwaitingRel)});
Diff ->
State#state{await_rel_timer = start_timer(Timeout - Diff, check_awaiting_rel)}
@ -714,7 +720,10 @@ enqueue_msg(Msg, State = #state{mqueue = Q}) ->
%%--------------------------------------------------------------------
redeliver(Msg = #mqtt_message{qos = QoS}, State) ->
deliver(Msg#mqtt_message{dup = if QoS =:= ?QOS2 -> false; true -> true end}, State).
deliver(Msg#mqtt_message{dup = if QoS =:= ?QOS2 -> false; true -> true end}, State);
redeliver({pubrel, PacketId}, #state{client_pid = Pid}) ->
Pid ! {redeliver, {?PUBREL, PacketId}}.
deliver(Msg, #state{client_pid = Pid}) ->
inc_stats(deliver_msg),