10.5.66. Configuration Directives for SSL
/etc/httpd/conf.d/ssl.conffile can be configured to enable secure Web communications using SSL and TLS.
SetEnvIfsets environment variables based on the headers of incoming connections. It is not solely an SSL directive, though it is present in the supplied
/etc/httpd/conf.d/ssl.conffile. It's purpose in this context is to disable HTTP keepalive and to allow SSL to close the connection without a closing notification from the client browser. This setting is necessary for certain browsers that do not reliably shut down the SSL connection.