#define G_IS_SOCKET_CLASS(k) (G_TYPE_CHECK_CLASS_TYPE ((k), G_TYPE_SOCKET))
#define G_SOCKET_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), G_TYPE_SOCKET, GSocket))
#define G_IS_SOCKET_CLASS(k) (G_TYPE_CHECK_CLASS_TYPE ((k), G_TYPE_SOCKET))
#define G_SOCKET_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), G_TYPE_SOCKET, GSocket))