extern int utcp_close(struct utcp_connection *connection);
extern int utcp_abort(struct utcp_connection *connection);
extern int utcp_shutdown(struct utcp_connection *connection, int how);
extern int utcp_close(struct utcp_connection *connection);
extern int utcp_abort(struct utcp_connection *connection);
extern int utcp_shutdown(struct utcp_connection *connection, int how);