Re: [paho-dev] Is Publish() a blocking call?

[Roger Light <roger@xxxxxxxxxx>]

Hi Jeff,

Publish is non blocking. You need to use loop_start() or loop_forever() to process the network queue. You can use the return from publish() to check whether the message has been delivered to the broker or not.

Cheers,

Roger

On 1 Mar 2017 6:23 p.m., "Jeffrey Herr" <jeff@xxxxxxxxxxxx> wrote:

All testing indicates Paho Python MQTT client does not block on the Publish() call. 

A loop pushing 500 messages then disconnecting will consistently Publish fewer than 500 messages into the queue. 

Is this expected?  And if so, how do we work around it besides a blind "Sleep" call?

-Jeff

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