当我在控制台日志中打印客户端 console.log( client ${client}); 时，它显示未定义。 我认为我应该在客户端代码中做一些事情，但不知道做什么。

服务器代码-

const WebSocket = require('ws');
const wss = new WebSocket.Server({ port: 8080 });

wss.on('connection', function connection(ws, request, client) {
  console.log(`client ${client}`);
  ws.on('message', function message(msg) {
    console.log(`Received message ${msg}`);
  });
});

客户端代码-

const Websocket = require('ws');
const ws = new Websocket('ws://localhost:8081');

function noop() {}

ws.on("message", function(event){
  console.log(event);
});


const ping = function() {
  ws.ping(noop);
}

setInterval(ping, 30000);