awDoesSubscriptionExist

BrokerError awDoesSubscriptionExist(
BrokerClient client,
char *event_type_name,
char *filter,
BrokerBoolean *exists);

client	The Broker client.
event_type_name	The event type name for the subscription.
filter	The event filter string.
exists	On return this is set to 1 (true) if the subscription exists on the Broker, otherwise it is set to 0 (false). This parameter is used for output.

Determines if a subscription with the specified event_type_name and filter exists on the Broker for the client.

Possible BrokerError major codes	Meaning
AW_ERROR_INVALID_CLIENT	The client has been destroyed or disconnected.
AW_ERROR_NULL_PARAM	The parameter event_type_name or exists is NULL.