[1] draft-girod-w3-id-res-ext-00 - WIRE - W3 Identifier Resolution Extensions (10/18/2014, 6:53:54 AM 版) <http://tools.ietf.org/html/draft-girod-w3-id-res-ext-00#section-2.3>
[2] RFC 4229 - HTTP Header Field Registrations (11/2/2014, 9:53:20 AM 版) <http://tools.ietf.org/html/rfc4229#section-2.2.8>
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