(PECL gupnp >= 0.1.0)
gupnp_service_info_get_introspection — Get resource introspection of service
Get resource introspection of service or register callback if corresponding parameter was passed.
A service proxy identifier.
The callback function to be called when introspection object is ready.
Typically, callback function takes on three parameters. The
parameter's identifier being the first,
error parameter's message
being the second, and the
arg is third.
User data for
Return true if callback function was defined. Return introspection identifier if callback function was omited.
Issues E_WARNING with not valid callback function.