initheader are the default headers to use. Net::HTTP adds Accept-Encoding to enable
compression of the response body unless Accept-Encoding or Range are supplied in initheader.
# File lib/net/http/request.rb, line 14
def initialize(path, initheader = nil)
super self.class::METHOD,
self.class::REQUEST_HAS_BODY,
self.class::RESPONSE_HAS_BODY,
path, initheader
end