use stduse bio pkg http =	type status = int 	type session = struct		f	: bio.file#		host	: byte[:]		port	: uint16		srvname	: byte[:]		ua	: byte[:]		err	: bool	;;  	type server = struct		ann	: std.announce#		refs	: uint32		quit	: bool	;; 	type url = struct		schema	: schema		port	: uint16		host	: byte[:]		path	: byte[:]		params	: (byte[:], byte[:])[:]	;; 	type err = union		`Ehttp int	/* http error */		`Eunsupp	/* unsupported feature */		`Econn		/* connection lost */		`Ehdr		/* invalid header */		`Eproto		/* protocol error */		`Eshort		/* truncated response */		`Egarbled	/* syntax error */		`Eenc		/* encoding error */		`Ewat		/* unknown error */	;; 	type schema = union		`Http		`Https	;; 	type method = union		`Get		`Head		`Put		`Post		`Delete		`Trace		`Options	;; 	type encoding = union		`Length		`Chunked		`Compress		`Deflate		`Gzip	;; 	type req = struct		url	: url#		hdrs	: (byte[:], byte[:])[:]		err	: std.option(err)		method	: method	;; 	type resp = struct		status	: int		hdrs	: (byte[:], byte[:])[:]		len	: std.size		err	: std.option(err)		reason	: byte[:]		body	: byte[:]		enc	: encoding	;; ;;