client | The Broker client whose event subscription is to be cancelled. |
event_type_name | The event type name of the subscription the Broker client wishes to cancel. |
filter | The filter string that was used in the subscription. Set this to NULL if no filter was specified in the original subscription. |
Possible BrokerError major codes | Meaning |
AW_ERROR_INVALID_CLIENT | The client has been destroyed or disconnected. |
AW_ERROR_INVALID_SUBSCRIPTION | No matching subscription was found. |
AW_ERROR_NULL_PARAM | The event_type_name is NULL. |