new
http.response_message.type.new
(req option http.request_message, version_major i32, version_minor i32, status_code i32, reason_phrase String, header Sequence (tuple String String), body io.Read_Handler)
=>
http.response_message¶0.099dev (GIT hash a1331a3dc7ff37424401d3c7d0dba5be1302516f)