Changes with nginx 1.7.3 08 Jul 2014 *) Feature: weak entity tags are now preserved on response modifications, and strong ones are changed to weak. *) Feature: cache revalidation now uses If-None-Match header if possible. *) Feature: the "ssl_password_file" directive. *) Bugfix: the If-None-Match request header line was ignored if there was no Last-Modified header in a response returned from cache. *) Bugfix: "peer closed connection in SSL handshake" messages were logged at "info" level instead of "error" while connecting to backends. *) Bugfix: in the ngx_http_dav_module module in nginx/Windows. *) Bugfix: SPDY connections might be closed prematurely if caching was used. -- Maxim Dounin http://nginx.org/en/donation.html