perf: conf: websocket 重连的时间间隔

src/channel/realTimeAPI.js

@@ -58,7 +58,7 @@ export class RealTimeAPI {
         // delay: 3000,
         delay: (errors, index) => {
           this.onRetry(index);
-          return timer(10000);
+          return timer(1000 * 2 * index); // linearly, but exponentially better : 2 ** index
         },
         resetOnSuccess: true,
       }),