speedtest-go

speedtest-go

Command Line Interface and pure Go API to Test Internet Speed using speedtest.net.

You can speedtest 2x faster than speedtest.net with almost the same result. See the experimental results.. Inspired by sivel/speedtest-cli

Go API Installation below.

CLI

Installation

macOS (homebrew)

$ brew tap showwin/speedtest
$ brew install speedtest

### How to Update ###
$ brew update
$ brew upgrade speedtest

Other Platform (Linux, Windows, etc.)

Please download compatible package from Releases. If there are no compatible package you want, please let me know on issue.

Usage

$ speedtest --help
usage: speedtest-go [<flags>]

Flags:
      --help                   Show context-sensitive help (also try --help-long and --help-man).
  -l, --list                   Show available speedtest.net servers.
  -s, --server=SERVER ...      Select server id to run speedtest.
      --custom-url=CUSTOM-URL  Specify the url of the server instead of getting a list from Speedtest.net
      --saving-mode            Using less memory (≒10MB), though low accuracy (especially > 30Mbps).
      --json                   Output results in json format
      --location=LOCATION      Change the location with a precise coordinate. Format: lat,lon
      --city=CITY              Change the location with a predefined city label.
      --city-list              List all predefined city labels.
      --version                Show application version.

Test Internet Speed

Simply use speedtest command. The closest server is selected by default.

$ speedtest
Testing From IP: 124.27.199.165 (Fujitsu) [34.9769, 138.3831]

Target Server: [6691]     9.03km Shizuoka (Japan) by sudosan
latency: 39.436061ms
Download Test: ................
Upload Test: ................

Download: 73.30 Mbit/s
Upload: 35.26 Mbit/s

Test to Other Servers

If you want to select other server to test, you can see available server list.

$ speedtest --list
Testing From IP: 124.27.199.165 (Fujitsu) [34.9769, 138.3831]
[6691]     9.03km Shizuoka (Japan) by sudosan
[6087]   120.55km Fussa-shi (Japan) by Allied Telesis Capital Corporation
[6508]   125.44km Yokohama (Japan) by at2wn
[6424]   148.23km Tokyo (Japan) by Cordeos Corp.
...

and select them by id.

$ speedtest --server 6691 --server 6087
Testing From IP: 124.27.199.165 (Fujitsu) [34.9769, 138.3831]

Target Server: [6691]     9.03km Shizuoka (Japan) by sudosan
Latency: 23.612861ms
Download Test: ................
Upload Test: ........

Target Server: [6087]   120.55km Fussa-shi (Japan) by Allied Telesis Capital Corporation
Latency: 38.694699ms
Download Test: ................
Upload Test: ................

[6691] Download: 65.82 Mbit/s, Upload: 27.00 Mbit/s
[6087] Download: 72.24 Mbit/s, Upload: 29.56 Mbit/s
Download Avg: 69.03 Mbit/s
Upload Avg: 28.28 Mbit/s

Test with virtual location

With --ciry or --location option, the closest server of the location will be picked. You can measure the speed between your location and the target location.

$ speedtest --city-list
Available city labels (case insensitive):
 CC             CityLabel       Location
(za)                capetown    [-33.9391993, 18.4316716]
(pl)                  warsaw    [52.2396659, 21.0129345]
(sg)                  yishun    [1.4230218, 103.8404728]
...

$ speedtest --city=capetown
$ speedtest --location=60,-110

Memory Saving Mode

With --saving-mode option, it can be executed even in insufficient memory environment like IoT device. The memory usage can be reduced to 1/10, about 10MB of memory is used.

However, please be careful that the accuracy is particularly low especially in an environment of 30 Mbps or higher. To get more accurate results, run multiple times and average.

For more details, please see saving mode experimental result.

Go API

go get github.com/showwin/speedtest-go

API Usage

The code below finds closest available speedtest server and tests the latency, download, and upload speeds.

package main

import (
	"fmt"
	"github.com/showwin/speedtest-go/speedtest"
)

func main() {
	user, _ := speedtest.FetchUserInfo()
	// Get a list of servers near a specified location
	// user.SetLocationByCity("Tokyo")
	// user.SetLocation("Osaka", 34.6952, 135.5006)

	serverList, _ := speedtest.FetchServers(user)
	targets, _ := serverList.FindServer([]int{})

	for _, s := range targets {
		s.PingTest()
		s.DownloadTest(false)
		s.UploadTest(false)

		fmt.Printf("Latency: %s, Download: %f, Upload: %f\n", s.Latency, s.DLSpeed, s.ULSpeed)
	}
}

Summary of Experimental Results

Speedtest-go is a great tool because of following 2 reasons:

• Testing time is the SHORTEST compare to speedtest.net and sivel/speedtest-cli, especially about 2x faster then speedtest.net.
• Result is MORE CLOSE to speedtest.net than speedtest-cli.

Following data is summarized. If you got interested in, please see more details.

Download (Mbps)

distance = distance to testing server

• 0 - 1000(km) ≒ domestic
• 1000 - 8000(km) ≒ same region
• 8000 - 20000(km) ≒ really far!
• 20000km is the half of the circumference of our planet.

Upload (Mbps)

Testing Time (sec)

Contributors

https://github.com/showwin/speedtest-go/graphs/contributors

LICENSE

MIT