Asked Mark Nottingham on Twitter, 430 is used in this other draft RFC: http://tools.ietf.org/html/draft-nottingham-http-pipeline-01 http://tools.ietf.org/html/

Asked Mark Nottingham on Twitter, 430 is used in this other draft RFC: http://tools.ietf.org/html/draft-nottingham-http-pipeline-01 http://tools.ietf.org/html/draft-nottingham-http-pipeline-01 (It's 430 Would Block.)