anchor.diff:  
   start_chunked_response(#httpd{mochi_req=MochiReq}=Req, Code, Headers0) ->
       couch_stats:increment_counter([couchdb, httpd_status_codes, Code]),
  -    Headers1 = Headers0 ++ server_header() ++
  -        couch_httpd_auth:cookie_auth_header(Req, Headers0),
  -    Headers2 = chttpd_cors:headers(Req, Headers1),
  -    Resp = MochiReq:respond({Code, Headers2, chunked}),
  +    Headers1 = basic_headers(Req, Headers0),
  +    Resp = MochiReq:respond({Code, Headers1, chunked}),
       case MochiReq:get(method) of
       'HEAD' -> throw({http_head_abort, Resp});
       _ -> ok
  
positive.code: %% dedicated chunk.
  chunked_response_buffer_size() ->
      config:get_integer("httpd", "chunked_response_buffer", 1490).
  
negative.code: 
  start_response_length(#httpd{mochi_req=MochiReq}=Req, Code, Headers0, Length) ->
      couch_stats:increment_counter([couchdb, httpd_status_codes, Code]),
      Headers1 = basic_headers(Req, Headers0),
      Resp = MochiReq:start_response_length({Code, Headers1, Length}),
      case MochiReq:get(method) of
      'HEAD' -> throw({http_head_abort, Resp});
      _ -> ok
  