> Apache > https://tn123.org/mod_xsendfile/ > > nginx > http://wiki.nginx.org/XSendfile > > lighttpd > http://redmine.lighttpd.net/projects/1/wiki/X-LIGHTTPD-send-file > That is something I didn't know about Apache, thanks for the information. I should have predicted that there is well-known API for communication. Regards, Sergey