<protocol name="xserver"> <interface name="xserver" version="1"> <request name="set_window_id"> <arg name="surface" type="object" interface="wl_surface"/> <arg name="id" type="uint"/> </request> <event name="client"> <arg name="fd" type="fd"/> </event> <event name="listen_socket"> <arg name="fd" type="fd"/> </event> </interface> </protocol>