go/ranger (HowettNET GitLab) DHowett/ranger

ranger - io.ReaderAt with range requests!

coverage report

Package ranger provides an implementation of io.ReaderAt and io.ReadSeeker which makes partial document requests. Ranger ships with a range fetcher that operates on an HTTP resource using the Range: header.


$ go get howett.net/ranger


package main

import (

func main() {
	url, _ := url.Parse("http://example.com/example.zip")

	reader, _ := ranger.NewReader(&ranger.HTTPRanger{URL: url})
	length, _ := reader.Length()
	zipreader, _ := zip.NewReader(reader, length)

	data := make([]byte, zipreader.File[0].UncompressedSize64)
	rc, _ := zipreader.File[0].Open()
	io.ReadFull(rc, data)