more tracking; hide arb from welcome splash

src/socket.js

@@ -6,7 +6,12 @@ import { DataFeed } from "./charts/datafeed";
 import {notifyFillEvent} from "@/notify.js";
 import {refreshOHLCSubs} from "@/blockchain/ohlcs.js";
 
-export const socket = io(import.meta.env.VITE_WS_URL || undefined, {transports: ["websocket"]})
+const socketOptions = {
+    transports: ["websocket"],
+    pingInterval: 25000, // PING every 25 seconds
+    pingTimeout: 60000 // Timeout if no PONG in 60 seconds
+}
+export const socket = io(import.meta.env.VITE_WS_URL || undefined, socketOptions)
 
 socket.on('connect', () => {
     console.log(new Date(), 'ws connected')