Using Durable Subscribers

You can use a session object to create a durable subscriber to a topic. The broker retains messages for these kinds of subscribers even when the subscriber becomes inactive.

Because the broker must maintain state for the subscriber and resume delivery of messages when the subscriber is reactivated, the broker must be able to identify a given subscriber throughout its comings and goings. The subscriber’s identity is constructed from the ClientID property of the connection that created it and the subscriber name specified when you create the subscriber.