nodejs udp 服务端示例代码

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const dgrm = require("dgram");

// 创建socket对象
const server = dgrm.createSocket("udp4");

server.on('error', (err) => {
  // 打印错误信息
  console.log("服务器异常", err);
  // 关闭服务
  server.close();
});

server.on("close", () => {
  console.log("关闭服务");
});


server.on("message", (msg, rinfo) => {
  console.log(`接搜到了来自: ${rinfo.address} 的信息 ${msg.toString()}`);
  server.send(Buffer.from("土豆土豆, 我是地瓜"), rinfo.port, rinfo.address);
});


server.on("listening", () => {
  const address = server.address();
  console.log(`服务器监听 ${address.address}:${address.port}`);

});

server.bind(3000);