feat: websocket新增heart beat方法

src/utils/websocket.js

@@ -117,7 +117,7 @@ class Socket extends EventEmitter {
   };
 
   checkWaitingData() {
-    console.log('ws: checkWaitingData', this.waiting);
+    console.log('ws: checkWaitingData', this.waitingSendData);
     if (this.waitingSendData.length) {
       this.sendMessage(this.waitingSendData.splice(0, 1));
       this.checkWaitingData();