GoFast

A HTTP downloader accelerator like axel, but faster.

What is this ?

gofast is a http-only downloader that uses multiple connections through concurrency relying in Range Request. It can burst your download speed just by spliting the whole GET request in N connections.

Features

• Normal HTTP download if the server does not accept ranges
• HTTP concurrency download
• Control of how many parallel connections per host

Usage

There is a couple of options that you can use:

$ gofast -h                                                                
A HTTP downloader accelerator using concurrency

Usage:
  gofast [flags]

Flags:
  -h, --help            help for gofast
  -n, --num-tasks int   Number of tasks to download (default 8)
  -o, --output string   File output name

Simple usage:

$ gofast https://releases.ubuntu.com/20.04.1/ubuntu-20.04.1-desktop-amd64.iso                                                         
Starting concurrent download of ubuntu-20.04.1-desktop-amd64.iso
Downloading 100% |...| (2.6/2.6 GB, 10.634 MB/s)          
Downloaded in 4m9.761532636s

Downloading the same file using axel:

$ axel -a https://releases.ubuntu.com/20.04.1/ubuntu-20.04.1-desktop-amd64.iso
Initializing download: https://releases.ubuntu.com/20.04.1/ubuntu-20.04.1-desktop-amd64.iso
File size: 2785017856 bytes
Opening output file ubuntu-20.04.1-desktop-amd64.iso.0
Starting download

Connection 3 unexpectedly closed
Connection 0 finished
Connection 1 finished
Connection 2 finished
Connection 1 finished
Connection 3 finished
Connection 0 finished

Downloaded 2.59375 Gigabyte(s) in 4:32 minute(s). (9969.09 KB/s)

Installing

You can go to releases and grab the latest one, or manually build (Tested on Linux and Windows).

$ git clone https://github.com/aandersonl/gofast && cd gofast && go build

Or

go get github.com/aandersonl/gofast

Make sure to have GOROOT variable configured to the installation above works.

Any bugs or enhancement feel free to open a issue or pull request!