Ping an address and get a promise result back

README.md

Ping (Node JS)

Ping a simple tcp socket and return a promise that let's you konw if the address is a alive or not.

ping.js

import net from 'net';

/**
 * @param {string} address
 * @param {number} port
 * @param {number} [timeoutMs=3000]
 * @returns {Promise<boolean>}
 */
function ping(address, port, timeoutMs = 3000) {
  return new Promise((resolve) => {
    const socket = new net.Socket();

    /**
     * @param {boolean} isAlive
     */
    function finish(isAlive) {
      resolve(isAlive);
      socket.destroy();
    }

    socket.connect(port, address, () => {
      finish(true);
    });

    socket.on('error', () => {
      finish(false);
    });

    socket.setTimeout(timeoutMs, () => {
      finish(false);
    });
  });
}