An example of monitoring the speed of internet connection using speedtest.net and a Linux-based PC.
What you'll need:
Adding and configuring the device:
Installing NodeJS:
Refer to the NodeJS documentation. Standard installation for Ubuntu or Debian:
# Using Ubuntu curl -fsSL https://deb.nodesource.com/setup_lts.x | sudo -E bash - sudo apt-get install -y nodejs # Using Debian, as root curl -fsSL https://deb.nodesource.com/setup_lts.x | bash - apt-get install -y nodejs
Installing SPEEDTEST:
Refer to the SPEEDTEST documentation. Standard installation for Ubuntu or Debian:
sudo apt-get install gnupg1 apt-transport-https dirmngr export INSTALL_KEY=379CE192D401AB61 sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys $INSTALL_KEY echo "deb https://ookla.bintray.com/debian generic main" | sudo tee /etc/apt/sources.list.d/speedtest.list sudo apt-get update # Other non-official binaries will conflict with Speedtest CLI # Example how to remove using apt-get # sudo apt-get remove speedtest-cli sudo apt-get install speedtest
The SPEEDTEST utility measures the parameters of your internet connection and displays Download speed, Upload speed, and Latency in the console. Let's test SPEEDTEST in the console. To do this, type the following command in the terminal:
speedtest
You'll receive a response similar to the following text:
Speedtest by Ookla Server: Kyivstar - Kiev (id = 23493) ISP: Private Joint-stock Company farlep-invest Latency: 22.72 ms (0.11 ms jitter) Download: 89.86 Mbps (data used: 63.2 MB) Upload: 93.63 Mbps (data used: 101.5 MB) Packet Loss: Not available. Result URL: https://www.speedtest.net/result/c/cc8fd3b0-9087-4961-aa78-1a3e91f24465
Creating a NodeJS Program. The program will execute the Speedtest command, extract the textual result, and retrieve the desired data: Download speed, Upload speed, and Latency.
Create a directory:
mkdir /var/viziot/ mkdir /var/viziot/speedtest
Navigate to the directory:
cd /var/viziot/speedtest
Create a NodeJS project:
npm init
Install the helper module viziot-mqtt-client-nodejs — it facilitates sending data to the VizIoT server using MQTT protocol:
npm install viziot-mqtt-client-nodejs -s
Create a script file:
nano ./index.js
Script content:
'use strict';
// Access key and password for VizIoT
let keyDevice = ___________________;
let passDevice = ____________________________;
let viziotMQTT = require('viziot-mqtt-client-nodejs');
let viziotMQTTClient = new viziotMQTT(keyDevice, passDevice);
viziotMQTTClient.connect(function () {});
function getPacketAndSendToServer() {
speedTest("*", function (result) {
console.log(result);
if(result.type == "ok"){
let packet = {
'date': parseInt(new Date().getTime()/1000),
"latency":result.latency,
"download":result.download,
"upload":result.upload
};
viziotMQTTClient.sendDataToVizIoT(packet, function (err) {
if (err) {
console.log("publish", err);
}
});
}
});
}
function speedTest(idServer, callBack){
const { exec } = require("child_process");
var command = "speedtest";
if(idServer != undefined && idServer != "*" && !isNaN(idServer) && idServer > 0){
command = "speedtest -s " + idServer;
}
console.log("Выполнение команды", command);
exec(command, (error, stdout, stderr) => {
if (error) {
console.log(`error: ${error.message}`);
callBack({type: "error message"});
return;
}
if (stderr) {
console.log(`stderr: ${stderr}`);
callBack({type: "error stderr"});
return;
}
console.log(`stdout: ${stdout}`);
var arrayString = stdout.replace(new RegExp("\r",'g'), "").split("\n");
var latency = getValue(arrayString, "Latency", "ms");
var download = getValue(arrayString, "Download", "Mbps");
var upload = getValue(arrayString, "Upload", "Mbps");
if(!isNaN(latency) && !isNaN(download) && !isNaN(upload)){
callBack({
"type": "ok",
"latency":latency,
"download":download,
"upload":upload
});
return;
}else{
callBack({"type": "error parse","latency":latency,
"download":download,
"upload":upload });
return;
}
});
}
function getValue(arrayString, nameParametr, typeMeasure) {
for (var ii = 0; ii < arrayString.length; ii++) {
if(arrayString[ii].indexOf(nameParametr + ":") !== -1) {
return parseFloat(arrayString[ii].replace(new RegExp("^.*" + nameParametr + ": *"), "").replace(new RegExp(" "+ typeMeasure + ".*$"), ""));
}
}
return NaN;
}
getPacketAndSendToServer();
let intervalTime = 1000 * 60 * 5;
setInterval(function () {
getPacketAndSendToServer();
}, intervalTime);
This script will be launched at system startup. To do this, we will add a record to the cron. Let's open the cron editor:
crontab -e
And at the very end, add a line that will run the script "/var/viziot/speedtest/index.js":
@reboot node /var/viziot/speedtest/index.js > /var/viziot/speedtest/output.txt &
Adding a widget: