anchor.diff:  	{RespType, Req2} = response(Status, Headers, RespHeaders, [
   		{<<"date">>, cowboy_clock:rfc1123()},
   		{<<"server">>, <<"Cowboy">>}
  -	|HTTP11Headers], <<>>, Req),
  +	|StdHeaders], <<>>, Req),
   	{RespType, Req2#http_req{connection=RespConn, resp_state=RespState2,
   			resp_headers=[], resp_body= <<>>}}.
   
  
positive.code: 		method=Method, resp_compress=Compress,
  		resp_state=RespState, resp_headers=RespHeaders})
  		when RespState =:= waiting; RespState =:= waiting_stream ->
  	HTTP11Headers = if
  		Transport =/= cowboy_spdy, Version =:= 'HTTP/1.1' ->
  			[{<<"connection">>, atom_to_connection(Connection)}];
  		true ->
  			[]
  
negative.code: 		_ when Compress ->
  			RespConn = response_connection(Headers, Connection),
  			Req2 = reply_may_compress(Status, Headers, Body, Req,
  				RespHeaders, StdHeaders, Method),
  			Req2#http_req{connection=RespConn};
  		_ ->
  			RespConn = response_connection(Headers, Connection),
  			Req2 = reply_no_compress(Status, Headers, Body, Req,
  				RespHeaders, StdHeaders, Method, iolist_size(Body)),
  			Req2#http_req{connection=RespConn}
  	end,
  	Req3#http_req{resp_state=done, resp_headers=[], resp_body= <<>>}.
  
  reply_may_compress(Status, Headers, Body, Req,
  		RespHeaders, StdHeaders, Method) ->
  	BodySize = iolist_size(Body),
  	try parse_header(<<"accept-encoding">>, Req) of
  		Encodings ->
  