数据报处理(UDP/Datagram)

稳定度：2 - 稳定

dgram 模块提供了对 UDP 数据报套接字的实现。

const dgram = require('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', () => {
    var address = server.address();
    console.log(`server listening ${address.address}:${address.port}`);
});
server.bind(41234);
// server listening 0.0.0.0:41234