Eclipse Community Forums: Paho » How to NOT acknowledge a message

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How to NOT acknowledge a message [message #1743457]

Thu, 15 September 2016 14:49

Alberto Anguita

Messages: 4
Registered: September 2016

Junior Member

I have a project in which incomming QoS=2 messages from the broker are handed to an API. However, this process might fail, or take to long, in which case I would like to indicate Paho that I don't want the message to be acknowledged (so that the broker will eventually send it again).

I saw in the documentation that the ACK is sent once the messageArrived() terminates cleanly. Is it possible to tell Paho not to send the ACK?

Regards.

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Re: How to NOT acknowledge a message [message #1744283 is a reply to message #1743457]

Fri, 23 September 2016 21:14

Ian Craggs

Messages: 83
Registered: March 2013

Member

You can do this in the Java client by calling the setManualAcks method. Another method is available to indicate when you want the ack to be sent.

Ian

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