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ntp-time

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ntp-time

A ntp library for nodejs

  • 2.0.6
  • latest
  • Source
  • npm
  • Socket score

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increased by30.99%
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ntp-time

NPM

Installation

With npm:

npm install ntp-time

With yarn:

yarn add ntp-time

Methods and usage

Client

To instantiate an NTP Client you just have to require the client class from the module and then instantiate it inside your code. To get the time you must use the syncTime method.

client.js

const NTP = require('ntp-time').Client;
const client = new NTP('a.st1.ntp.br', 123, { timeout: 5000 });

async function sync() {
	try {
		await client.syncTime();
	} catch (err) {
		console.log(err);
	}
}

sync();

// Or using .then

client
	.syncTime()
	.then(time => console.log(time)) // time is the whole NTP packet
	.catch(console.log);

Server

To put a server up, you must require the server class from the ntp-time module, pass a request callback to it and use the listen method, with a port and an callback as an argument. Inside the request callback you can manipulate the message the way you want.

server.js

const NTPServer = require('ntp-time').Server;
const server = new NTPServer();

// Define your custom handler for requests
server.handle((message, response) => {
	console.log('Server message:', message);

	message.transmitTimestamp = Math.floor(Date.now() / 1000);

	response(message);
});

// Check if node has the necessary permissions
// to listen on ports less than 1024
// https://stackoverflow.com/questions/413807/is-there-a-way-for-non-root-processes-to-bind-to-privileged-ports-on-linux
server.listen(123, err => {
	if (err) throw err;

	console.log('Server listening');
});

For more didatic code, go to the examples page.

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Package last updated on 22 Aug 2024

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