websocket实现心跳链接

在使用websocket的时候，遇到了一个websocket在链接一段时间就异常断开链接了。第一想法就是从新去链接websocket（websock.onopen），后来发现这种方式是错误的，查阅文档发现，要想从新创建链接，就须要一种心跳思想去处理（实时监听链接状况，断了就去重连）
下面以Vue代码为准：web

let lockReconnect = false;//避免重复链接
 let wsUrl = '‘ // url;
 let ws;
 let tt;


createWebSocket() {
        let that = this;
        try {
          ws = new WebSocket(wsUrl);
          this.init();
        } catch(e) {
          console.log('catch');
          that.reconnect(wsUrl);
        }
      },
      init() {
        let that = this;

        //心跳检测
        let heartCheck = {
          timeout: 3000,
          timeoutObj: null,
          serverTimeoutObj: null,
          start: function(){
            console.log('start');
            let self = this;
            this.timeoutObj && clearTimeout(this.timeoutObj);
            this.serverTimeoutObj && clearTimeout(this.serverTimeoutObj);
            this.timeoutObj = setTimeout(function(){
              //这里发送一个心跳，后端收到后，返回一个心跳消息，
              console.log('55555');
              ws.send("888");
              self.serverTimeoutObj = setTimeout(function() {
                console.log(111);
                console.log(ws);
                ws.close();
                // createWebSocket();
              }, self.timeout);

            }, this.timeout)
          }
        };
        ws.onclose = function () {
          console.log('连接关闭');
          that.reconnect(wsUrl);
          location.reload()
        };
        ws.onerror = function() {
          console.log('发生异常了');
          that.reconnect(wsUrl);
          location.reload();
        };
        ws.onopen = function () {
          //心跳检测重置
          heartCheck.start();
        };
        ws.onmessage = function (e) {
          //拿到任何消息都说明当前链接是正常的
          console.log('接收到消息');
          console.log(e);
          
          heartCheck.start();
        }
      },
      reconnect(url) {
        if(lockReconnect) {
          return;
        }
        lockReconnect = true;
        //没链接上会一直重连，设置延迟避免请求过多
        tt && clearTimeout(tt);
        tt = setTimeout( () => {
          this.createWebSocket(url);
          lockReconnect = false;
        }, 4000);
      },



this.createWebSocket(wsUrl);