Check if operation handle has active event subscriptions.
Active subscription can be established either by nua_subscribe() or nua_refer() calls.
|nh||Pointer to operation handle|
- Return values:
|0||no event subscriptions in operation or operation handle is invalid |
|!=0||operation has event subscriptions|
- Related tags:
Definition at line 414 of file nua.c.
return nh ? nh->nh_ds->ds_has_events : 0;