Worked on the cloudflare/quiche repository to deliver granular HTTP/3 stream shutdown control, introducing the H3Controller::shutdown_stream() API in Rust. This feature enables explicit termination of HTTP/3 streams in specific directions by sending RESET_STREAM and STOP_SENDING frames, addressing the challenge of dangling streams and improving resource management under high-load conditions. The implementation included comprehensive tests covering multiple shutdown scenarios to ensure correctness and robustness. By focusing on maintainable API design and clear, focused code changes, the work enhanced the reliability of HTTP/3 connections and demonstrated strong skills in network programming, HTTP/3 protocol handling, and Rust development practices.