http 스펙

https://datatracker.ietf.org/doc/html/rfc2616

그외 restful api

HTTP Request

https://urclass.codestates.com/4acb1a42-8c7e-493c-bb05-2595d4f052a2?playlist=253

HTTP Response

https://www.youtube.com/watch?v=c9sMNc2PrMU&t=1s