HTTP/1.1HTTP/1.1 is a network protocol used by browsers and servers. It has been superseded by HTTP/2 and HTTP/3.httpHTTPwidely2015-07-292018-01-29https://httpwg.org/specs/rfc9112.htmlhttps://developer.mozilla.org/docs/Web/HTTP/Reference/Headers/TEhttp.headers.Accepthttp.headers.Accept-Encodinghttp.headers.Accept-Languagehttp.headers.Accept-Rangeshttp.headers.Agehttp.headers.Cache-Controlhttp.headers.Connectionhttp.headers.Content-Dispositionhttp.headers.Content-Encodinghttp.headers.Content-Languagehttp.headers.Content-Lengthhttp.headers.Content-Locationhttp.headers.Content-Rangehttp.headers.Content-Typehttp.headers.Datehttp.headers.ETaghttp.headers.Expireshttp.headers.Fromhttp.headers.Hosthttp.headers.If-Matchhttp.headers.If-Modified-Sincehttp.headers.If-None-Matchhttp.headers.If-Rangehttp.headers.If-Unmodified-Sincehttp.headers.Keep-Alivehttp.headers.Last-Modifiedhttp.headers.Locationhttp.headers.Originhttp.headers.Proxy-Authenticatehttp.headers.Rangehttp.headers.Refererhttp.headers.Serverhttp.headers.TEhttp.headers.Trailerhttp.headers.Transfer-Encodinghttp.headers.User-Agenthttp.headers.Varyhttp.headers.Viahttp.methods.CONNECThttp.methods.DELETEhttp.methods.GEThttp.methods.HEADhttp.methods.OPTIONShttp.methods.POSThttp.methods.PUThttps://nowyoucanuse.com/features--http11.html