Bom dias Colegas

[Marcio Luis de Paula]

Estou fazendo um codigo e o link do MQTT Paho cai.

como manter a conexao mandando pum ping para manter viva a conexao?

tem algum exemplo python?

[Andy Stanford-Clark]

Sorry for my very poor Portugese… (thank you google translate!)

O cliente python Paho tem um exemplo que permanece ativo.

Às vezes, um firewall pode atingir o tempo limite de uma conexão - qual é o Keepalive definido? Tente 45 seg…

The Paho python client has an example which stays alive.

Sometimes a firewall can time out a connection - what is the keepalive set to? Try 45 sec…

Andy

[Marcio Luis de Paula]

Hi Andy!

thanks for this.

sorry my English language is not very good.

in my script code python is a problem:

if the keepallive time expires, the link is lost.
My commands are by buttons on and off.
if the keepallive time passes, the connection is lost.
Do you know any flag mode to watch the connection?

thanks

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[Andy Stanford-Clark]

Does your program use 

loop()

Or 

loop_start()

?

This will keep an eye on the time and send a “ping” within the keep alive time to avoid the broker dropping the connection.

See Network loop section of the documentation: 

https://www.eclipse.org/paho/index.php?page=clients/python/docs/index.php

Andy

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[Marcio Luis de Paula]

Nice ! Thanks for this.

I'll try to solve it Tuesday.my application uses fair GUI in QT5. hence there are 6 command buttons. I'll have to call a routine and get out of it. cannot get stuck in the loop. I'm going to ride a motorcycle and refresh my mind.thanks for the help I will read about network loop, that solves it.

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