Changes with nginx 0.3.15 07 Dec 2005 *) Feature: the new 444 code of the "return" directive to close connection. *) Feature: the "so_keepalive" directive in IMAP/POP3 proxy. *) Bugfix: if there are unclosed connection nginx now calls abort() only on gracefull quit and active "debug_points" directive. Igor Sysoev http://sysoev.ru/en/