Julien, Benjamin,
the javadoc for messageArrived is not quite right. It is true you
can publish messages within the messageArrived callback when used
with the MqttAsyncClient, but you can't if you use MqttClient.
The MqttClient class was intended to simplify MQTT application
programming. As a consequence it's less flexible than the
MqttAsyncClient class. We need to update the Javadoc.
Ian
On 03/13/2014 04:01 PM, Dave Locke
wrote:
in messageArrived the
application must
return control as quickly as possible. If it blocks any new
inbound
messages will not be processed. Publishing using the non
blocking
i.e. async client within the messageArrived is fine. But do
not
wait for completion of the publish within messageArrived using
blocking
methods like waitforcompletion.
All the best
Dave
From:
Benjamin Cabé
<benjamin@xxxxxxxxxxx>
To:
General development
discussions for paho project <paho-dev@xxxxxxxxxxx>
Date:
13/03/2014 11:37
Subject:
Re: [paho-dev]
java: publishing from the callback
Sent by:
paho-dev-bounces@xxxxxxxxxxx
Hi,
Any hints on this? Julien and I are finalizing the MQTT
Tutorial for
EclipseCon and it¹s too bad that messages can¹t be published
from the
MqttCallback (despite what the Javadoc says, which makes this
even more
confusing).
Thanks!
Benjamin
Le 11/03/2014 13:28, « Julien Vermillard »
<jvermillar@xxxxxxxxxxxxxxxxxx>
a écrit :
>Hi!
>With the java paho client, publishing a message inside the
>"messageArrived" callback is
>blocking the whole MQTT client.
>
>It's supposed to be like that? It's not that complex to
delegate the
>publishing to another thread but I'm wondering if I missed
something
>here.
>
>Thanks,
>Julien
>_______________________________________________
>paho-dev mailing list
>paho-dev@xxxxxxxxxxx
>https://dev.eclipse.org/mailman/listinfo/paho-dev
>
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Ian Craggs
icraggs@xxxxxxxxxx IBM United Kingdom
Comitter on Paho, Mosquitto
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