Nginx 1.11.4 发布了，更新如下：
- Feature: the $upstream_bytes_received variable.
- Feature: the $bytes_received, $session_time, $protocol, $status,
$upstream_addr, $upstream_bytes_sent, $upstream_bytes_received,
$upstream_connect_time, $upstream_first_byte_time, and
$upstream_session_time variables in the stream module.
- Feature: the ngx_stream_log_module.
- Feature: the “proxy_protocol” parameter of the “listen” directive, the $proxy_protocol_addr and $proxy_protocol_port variables in the stream module.
- Feature: the ngx_stream_realip_module.
- Bugfix: nginx could not be built with the stream module and the ngx_http_ssl_module, but without ngx_stream_ssl_module; the bug had appeared in 1.11.3.
- Feature: the IP_BIND_ADDRESS_NO_PORT socket option was not used; the bug had appeared in 1.11.2.
- Bugfix: in the “ranges” parameter of the “geo” directive.
- Bugfix: an incorrect response might be returned when using the “aio threads” and “sendfile” directives; the bug had appeared in 1.9.13.