Worked on the firebase/firebase-android-sdk repository to address a critical issue with WebSocket handshake headers required for App Check enforcement in the Gemini Live API. Using Kotlin and Ktor for backend development, implemented logic to pre-fetch headers in a suspend context and apply them synchronously within the WebSocket session configuration, ensuring the X-Firebase-AppCheck header is included during handshake. Added comprehensive unit tests to verify correct header inclusion and maintained code quality by ensuring compatibility with the existing test suite. Validated the solution through end-to-end testing, confirming that liveModel().connect() functions correctly when App Check is enforced on AI Logic.