History of HTTP headers Revision history for: English (US) Oct 12, 2016, 6:22:21 AM fscholz Previous Oct 12, 2016, 3:12:53 AM fscholz Previous Oct 12, 2016, 3:07:56 AM fscholz Previous Oct 11, 2016, 2:20:52 PM fscholz Previous Oct 10, 2016, 8:11:36 AM fscholz Previous Oct 10, 2016, 4:21:20 AM fscholz Previous Oct 10, 2016, 3:01:51 AM fscholz Previous Sep 29, 2016, 3:05:13 PM MaureenKole The description for the Upgrade header field was blank. A synopsis of the concept and links to the relevant RFCs are now present. Previous Sep 29, 2016, 3:02:59 PM MaureenKole The paragraph for the Upgrade header field was blank. Links to the relevant RFCs and a synopsis of the concept are now present. Previous Sep 29, 2016, 2:59:57 PM MaureenKole