[1] draft-nottingham-http-new-status-00 - Additional HTTP Status Codes ( (2012-02-05 01:07:40 +09:00 版)) http://tools.ietf.org/html/draft-nottingham-http-new-status-00#section-5

[2] draft-nottingham-http-pipeline-01 - Making HTTP Pipelining Usable on the Open Web ( (2011-11-20 01:13:15 +09:00 版)) http://tools.ietf.org/html/draft-nottingham-http-pipeline-01#section-8