Changshan Su developed HTTP Range support for the jellyfin/jellyfin repository, enabling partial content delivery for streaming files and improving client compatibility. Working primarily in C# and leveraging expertise in API development and HTTP protocols, Su refined the handling of User-Agent and Content-Type headers to ensure smoother interactions with a variety of clients. The work focused on backend development, addressing the need for efficient streaming and broader device support. While no explicit bug fixes were reported during this period, the feature delivered foundational improvements to the codebase, demonstrating depth in protocol-level engineering and thoughtful integration with the existing streaming infrastructure.