浏览器中打开F12，控制台中输入以下内容 > 回车 > 等待结果
连接关闭 表示断网

let reconnectDelay = 1000; // 初始重连间隔
let pingInterval = null;
let socketManuallyClosed = false; // 标志是否手动关闭function createWebSocket() {if (socketManuallyClosed) return;const socket = new WebSocket("wss://echo.websocket.org");socket.onopen = function () {console.log(new Date().toLocaleString(), "WebSocket 连接成功");socket.send("Hello WebSocket!");// 发送心跳包（每 30 秒）pingInterval = setInterval(() => {if (socket.readyState === WebSocket.OPEN) {socket.send("ping");// console.log(new Date().toLocaleString(), "发送 ping");}}, 30000);// 重置重连时间reconnectDelay = 1000;};socket.onmessage = function (event) {if(event.data === 'ping') returnconsole.log(new Date().toLocaleString(), "收到消息:", event.data);};socket.onerror = function (error) {console.error(new Date().toLocaleString(), "WebSocket 错误:", error);socket.close(); // 触发 onclose 进行重连};socket.onclose = function () {console.log(new Date().toLocaleString(), "WebSocket 连接关闭");clearInterval(pingInterval);if (!socketManuallyClosed) {setTimeout(() => {console.log("尝试重新连接 WebSocket...");createWebSocket();}, reconnectDelay);// 指数退避：每次失败后重连间隔增加，最大 60 秒reconnectDelay = Math.min(reconnectDelay * 2, 60000);}};
}// 启动 WebSocket 连接
createWebSocket();