Reverse-Engineering Chrome DevTools Protocol (CDP) for Headless Remote Input Dispatching
Key Takeaways & Executive Summary
While standard web scripts can only simulate synthetic JavaScript clicks, the Chrome DevTools Protocol (CDP) allows sending native operating system-level mouse and keyboard events directly into the browser renderer engine.
1. Attaching to Inspected Windows via chrome.debugger
Using chrome.debugger.attach({ tabId }, "1.3"), the ReMOAT extension gains direct access to the browser V8 engine and rendering pipeline, intercepting network requests before JavaScript service workers can block them.
2. Hardware-Level Input Dispatching
By sending Input.dispatchMouseEvent({ type: "mousePressed", x, y, button: "left" }), ReMOAT triggers authentic user interactions that work even on cross-origin iframes and canvas elements.
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