server connections handling

packages/web/src/utility/OpnedConnectionsPinger.js

@@ -0,0 +1,14 @@
+import React from 'react';
+import { useOpenedConnections } from './globalState';
+import axios from './axios';
+
+export default function OpenedConnectionsPinger({ children }) {
+  const openedConnections = useOpenedConnections();
+  React.useEffect(() => {
+    const handle = window.setInterval(() => {
+      axios.post('server-connections/ping', { connections: openedConnections });
+    }, 30 * 1000);
+    return () => window.clearInterval(handle);
+  }, [openedConnections]);
+  return children;
+}