Node.js v18.12.1 documentation

UDP/datagram sockets#

Source Code: lib/dgram.js

The node:dgram module provides an implementation of UDP datagram sockets.node:dgram模块提供了UDP数据报套接字的实现。

import dgram from 'node:dgram';

const server = dgram.createSocket('udp4');

server.on('error', (err) => {
console.log(`server error:\n${err.stack}`);
server.close();
});

server.on('message', (msg, rinfo) => {
console.log(`server got: ${msg} from ${rinfo.address}:${rinfo.port}`);
});

server.on('listening', () => {
const address = server.address();
console.log(`server listening ${address.address}:${address.port}`);
});

server.bind(41234);
// Prints: server listening 0.0.0.0:41234const dgram = require('node:dgram');
const server = dgram.createSocket('udp4');

server.on('error', (err) => {
console.log(`server error:\n${err.stack}`);
server.close();
});

server.on('message', (msg, rinfo) => {
console.log(`server got: ${msg} from ${rinfo.address}:${rinfo.port}`);
});

server.on('listening', () => {
const address = server.address();
console.log(`server listening ${address.address}:${address.port}`);
});

server.bind(41234);
// Prints: server listening 0.0.0.0:41234