I believe this documentation [1] will answer your question.
Justin [1] https://activemq.apache.org/components/artemis/documentation/latest/mqtt.html#automatic-subscription-clean-up On Thu, Mar 6, 2025 at 3:08 PM Ben Short <b...@benshort.co.uk> wrote: > Can the default expiry interval be changed? > > On 06/03/2025 14:12, Domenico Francesco Bruscino wrote: > > The default expiry interval of Apache ActiveMQ Artemis for MQTT5 sessions > > is 0. It means that the session is cleared soon after the client > > disconnection if the client doesn't specify an expiry interval. > > What is the session expiry interval that client1 is specifying? > > > > Domenico > > > > On Thu, 6 Mar 2025 at 12:51, Ben Short <b...@benshort.co.uk> wrote: > > > >> Hi, > >> > >> I'm struggling to configure my Artemis instance to support MQTT > >> persistent Subscriptions. > >> > >> I have two NodeJS MQTT5 clients. > >> > >> Client 1 connects and then subscribes to a topic. > >> Client 2 connects and then publishes messages to the topic every 1000ms. > >> > >> Both set the clear option to false and set the QoS to 1 when subscribing > >> and publishing. > >> > >> When using these clients against HiveMQ's public MQTT MQ I see the > >> following behavior. > >> > >> Start Client 2 which connects and starts publishing messages. > >> Start Client 1 which connects and starts receiving messages. > >> Disconnect Client 1. > >> Wait 5 seconds. > >> Start Client 1 which connects and receives the messages publish while it > >> was not connected. > >> > >> > >> When I try the same thing with my Artemis instance the messages > >> published while Client 1 is not connected are lost. > >> > >> > >> The following shows the Artemis logging during the test steps: > >> > >> [MQTTSession] MQTT session created: cdb31991-d5aa-447e-8d09-d640e2bca4c0 > >> [MQTTStateManager] Adding MQTT session state for: client2 > >> [MQTTStateManager] Adding durable MQTT state record for: client2 > >> [MQTTStateManager] Serializing 0 subscriptions > >> [MQTTSession] MQTT session created: a6b9e876-ae42-4cbf-b098-40c00f164245 > >> [MQTTStateManager] Adding MQTT session state for: client1 > >> [MQTTStateManager] Adding durable MQTT state record for: client1 > >> [MQTTStateManager] Serializing 0 subscriptions > >> [MQTTStateManager] Adding durable MQTT state record for: client1 > >> [MQTTStateManager] Serializing 1 subscriptions > >> [MQTTSessionState] Matching hul/101/in with hul/101/in$: true > >> [MQTTSessionState] Matching hul/101/in with hul/101/in$: true > >> [MQTTStateManager] Adding durable MQTT state record for: client1 > >> [MQTTStateManager] Serializing 0 subscriptions > >> [MQTTStateManager] Removing MQTT session state for: client1 > >> [MQTTStateManager] Removed 1 durable MQTT state records for: client1 > >> [MQTTSession] MQTT session created: 68f3bb3c-b243-4d63-bdaa-81af0d3872db > >> [MQTTStateManager] Adding MQTT session state for: client1 > >> [MQTTStateManager] Adding durable MQTT state record for: client1 > >> [MQTTStateManager] Serializing 0 subscriptions > >> [MQTTStateManager] Adding durable MQTT state record for: client1 > >> [MQTTStateManager] Serializing 1 subscriptions > >> [MQTTSessionState] Matching hul/101/in with hul/101/in$: true > >> [MQTTSessionState] Matching hul/101/in with hul/101/in$: true > >> [MQTTStateManager] Adding durable MQTT state record for: client1 > >> [MQTTStateManager] Serializing 0 subscriptions > >> [MQTTStateManager] Removing MQTT session state for: client1 > >> [MQTTStateManager] Removed 1 durable MQTT state records for: client1 > >> > >> I have tried with persistence enabled and disabled in the broker.xml > >> > >> Any ideas where I'm going wrong? > >> > >> Regards > >> > >> --------------------------------------------------------------------- > >> To unsubscribe, e-mail: users-unsubscr...@activemq.apache.org > >> For additional commands, e-mail: users-h...@activemq.apache.org > >> For further information, visit: https://activemq.apache.org/contact > >> > >> > >> > > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@activemq.apache.org > For additional commands, e-mail: users-h...@activemq.apache.org > For further information, visit: https://activemq.apache.org/contact > > >
