What Is UDP?

import dgram from 'node:dgram';

// 1. Create UDP Server
const server = dgram.createSocket('udp4');
server.on('message', (msg, rinfo) => {
  console.log(`Received ${msg.length} bytes from ${rinfo.address}:${rinfo.port}`);
});
server.bind(41234);

// 2. Create UDP Client (Zero handshake!)
const client = dgram.createSocket('udp4');
const message = Buffer.from('Real-time telemetry payload');

// Dispatches immediately in a single system call
client.send(message, 41234, '127.0.0.1', (err) => {
  client.close();
});