[1] mod_remoteip - Apache HTTP Server ( (2012-01-10 03:11:16 +09:00 版)) <http://httpd.apache.org/docs/2.3/mod/mod_remoteip.html>
[2] draft-stecher-icap-subid-00 - ICAP Extensions ( (2014-08-31 17:09:58 +09:00 版)) <http://tools.ietf.org/html/draft-stecher-icap-subid-00#section-3>