A callback for asynchronous meta/policy event messages. Well known
* event names are PA_STREAM_EVENT_REQUEST_CORK and
* PA_STREAM_EVENT_REQUEST_UNCORK. The set of defined events can be
* extended at any time. Also, server modules may introduce additional
* message types so make sure that your callback function ignores messages
* it doesn't know. \since 0.9.15
A callback for asynchronous meta/policy event messages. Well known * event names are PA_STREAM_EVENT_REQUEST_CORK and * PA_STREAM_EVENT_REQUEST_UNCORK. The set of defined events can be * extended at any time. Also, server modules may introduce additional * message types so make sure that your callback function ignores messages * it doesn't know. \since 0.9.15