$state = $session->getPropertySubscriptionState(
      $object, $property )

The getPropertySubscriptionState() function gets the current state of subscription to the specified event.

The possible reply values are listed in getPropertySubscriptionState return codes.

Table 1. getPropertySubscriptionState return codes

Return code

Subscription state

0

Unsubscribed

1

Pending

2

Subscribed

3

Suspended