poc

This page drives the browser DevTools WebSocket directly from HTML. It opens a short-lived target, issues IndexedDB.requestData, and then navigates the target away to trigger the browser-side teardown race.

Start the browser with --remote-debugging-port=9239 --remote-allow-origins=*. If auto-discovery fails, open http://127.0.0.1:9239/json/version, copy webSocketDebuggerUrl, and paste it below.

Browser WS URL

CDP HTTP port Rounds Rows Value size Navigate delay (ms)