/usr/include/gstreamer-1.0/gst/rtsp-server/ is in libgstrtspserver-1.0-dev 1.6.2-1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/gstreamer-1.0/gst/rtsp-server/rtsp-address-pool.h
/usr/include/gstreamer-1.0/gst/rtsp-server/rtsp-auth.h
/usr/include/gstreamer-1.0/gst/rtsp-server/rtsp-client.h
/usr/include/gstreamer-1.0/gst/rtsp-server/rtsp-context.h
/usr/include/gstreamer-1.0/gst/rtsp-server/rtsp-media-factory-uri.h
/usr/include/gstreamer-1.0/gst/rtsp-server/rtsp-media-factory.h
/usr/include/gstreamer-1.0/gst/rtsp-server/rtsp-media.h
/usr/include/gstreamer-1.0/gst/rtsp-server/rtsp-mount-points.h
/usr/include/gstreamer-1.0/gst/rtsp-server/rtsp-params.h
/usr/include/gstreamer-1.0/gst/rtsp-server/rtsp-permissions.h
/usr/include/gstreamer-1.0/gst/rtsp-server/rtsp-sdp.h
/usr/include/gstreamer-1.0/gst/rtsp-server/rtsp-server.h
/usr/include/gstreamer-1.0/gst/rtsp-server/rtsp-session-media.h
/usr/include/gstreamer-1.0/gst/rtsp-server/rtsp-session-pool.h
/usr/include/gstreamer-1.0/gst/rtsp-server/rtsp-session.h
/usr/include/gstreamer-1.0/gst/rtsp-server/rtsp-stream-transport.h
/usr/include/gstreamer-1.0/gst/rtsp-server/rtsp-stream.h
/usr/include/gstreamer-1.0/gst/rtsp-server/rtsp-thread-pool.h
/usr/include/gstreamer-1.0/gst/rtsp-server/rtsp-token.h