net/url: support HTTP/1.1 connections
net/url: support HTTP/1.1 connections

original commit: 50ade25b28cdeef71efdb6aff87c2905f1e6f1d9

mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket