[1] RFC 7259 - The Jabber-ID Header Field ( (2014-05-15 21:01:03 +09:00 版)) <http://tools.ietf.org/html/rfc7259>

[2] RFC 7622 - Extensible Messaging and Presence Protocol (XMPP): Address Format (2015-12-08 07:08:54 +09:00 版) <https://tools.ietf.org/html/rfc7622>