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Re: [mosquitto-dev] qos 1 callbacks and memory management

Hi Anto,

Sounds interesting.
Could you show me some use cases of your extension?


2018-03-04 5:14 GMT+09:00 Anto Nello <hbrain@xxxxxxxxx>:
> Hello guys,
> I'm trying to create an extension of the libmosquitto in order to manage a
> custom application ack.
> All other applications are going to communicate with the MQTT broker through
> my extension.
> I have some questions:
> 1) I have seen that on_publish, on_subscribe and on_connect handlers are
> called both with qos=0 and qos=1.
> I thought that these callbacks were only called in corrispondence of PUBACK,
> What am I missing?
> 2) How the memory is managed inside libmosquitto ?
> Fastly looking at the code it seems there are internal queues.
> 3) What happens if the MQTT broker publishes messages on 2 or more different
> topics at the same time ?
> Is this already managed by the lib ? It should be connected to point 2.
> 4) Are there blocking publish and subscribe functions inside the library ?
> Thanks in advance
> Regards
> MP
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