Nginx 刚刚发布了 1.1.8 开发版，下载地址：
*) Change: the ngx_http_limit_zone_module was renamed to the ngx_http_limit_conn_module.
*) Change: the "limit_zone" directive was superseded by the "limit_conn_zone" directive with a new syntax.
*) Feature: support for multiple "limit_conn" limits on the same level.
*) Feature: the "image_filter_sharpen" directive.
*) Bugfix: a segmentation fault might occur in a worker process if resolver got a big DNS response.
*) Bugfix: in cache key calculation if internal MD5 implementation was used; the bug had appeared in 1.0.4.
*) Bugfix: the "If-Modified-Since", "If-Range", etc. client request header lines might be passed to backend while caching; or not passed without caching if caching was enabled in another part of the configuration.
*) Bugfix: the module ngx_http_mp4_module sent incorrect "Content-Length" response header line if the "start" argument was