Function gstreamer_rtsp_server_sys::gst_rtsp_stream_get_rtcp_multicast_socket

pub unsafe extern "C" fn gst_rtsp_stream_get_rtcp_multicast_socket(
    stream: *mut GstRTSPStream, 
    family: GSocketFamily
) -> *mut GSocket

This is supported on crate feature v1_14 only.