During September 2025, Glonee focused on enhancing HTTP/3 transport stability in the SagerNet/quic-go repository. Addressing a critical data race in Transport initialization, Glonee improved the reliability of concurrent RoundTrip calls, especially under high-load scenarios. By introducing safeguards to prevent operations on closed Transport instances, Glonee reduced the risk of panics and undefined behavior, ensuring safer network programming practices. The work involved expanding test coverage to validate closed-transport usage and updating core Go code in http3/transport.go. Leveraging expertise in Go, concurrent programming, and testing, Glonee delivered targeted improvements that deepened the robustness of HTTP/3 transport handling.