Patent ID: 10812600

Abstract:
Methods, systems and computer products for ensuring session correctness for subscribing clients connected to a publish-subscribe broker via a gateway having intermittent connectivity with the broker. The gateway is configured to: (1) subscribe to one or more topics of a publish-subscribe service controlled by the broker in response to one or more subscription sessions initiated by one or more subscribing clients connected to the gateway for subscribing to the topic(s), (2) identify session parameters indicative of activity state of each subscription session, (3) reconnecting to the broker following a disconnection period, (4) receiving from the broker one or more messages published on the topic(s) during the disconnection period, the broker correlates each message with message properties, and (5) publish each message to one or more of the subscribing clients based on compliance of the message properties of the respective message with the session parameters of the respective subscription session.