peter.hilton (233) [Avatar] Offline
In 1.5.5 Request headers (v11 MEAP), the table includes ‘Referrer’ but the correct HTTP header name is ‘Referer’. ‘Referer’ is a misspelling that was unfortunately introduced into the HTTP specification - see

You might want to add a note in the text about the misspelling, to prevent copy-editors from ‘correcting’ this in the manuscript.