[1] draft-fielding-http-key-02 - The Key HTTP Response Header Field ( (9/29/2013, 8:30:37 AM 版)) <http://tools.ietf.org/html/draft-fielding-http-key-02>
[2] The Key HTTP Response Header Field (4/5/2016, 5:26:28 PM 版) <http://httpwg.org/http-extensions/key.html>
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