Worked on improving the WebSocket protocol parser in the aio-libs/aiohttp repository by addressing a bug related to continuation frame handling. Enhanced the parser’s correctness by ensuring that continuation frames are only processed after a valid initial frame, thereby reducing the risk of protocol desynchronization. Applied test-driven development practices to update and expand the test suite, verifying that invalid frame sequences now raise appropriate exceptions. Utilized Python, asyncio, and in-depth knowledge of aiohttp internals to implement robust error handling. Collaborated with peers through code review and co-authorship, focusing on reliability and maintainability in production WebSocket communication scenarios.