Changes with nginx 1.3.14 05 Mar 2013
*) Feature: $connections_active, $connections_reading, and $connections_writing variables in the ngx_http_stub_status_module.
*) Feature: support of WebSocket connections in the ngx_http_uwsgi_module and ngx_http_scgi_module.
*) Bugfix: in virtual servers handling with SNI.
*) Bugfix: new sessions were not always stored if the "ssl_session_cache shared" directive was used and there was no free space in shared memory. Thanks to Piotr Sikora.
*) Bugfix: multiple X-Forwarded-For headers were handled incorrectly. Thanks to Neal Poole for sponsoring this work.
*) Bugfix: in the ngx_http_mp4_module. Thanks to Gernot Vormayr.