During June 2025, Marco Sitar developed a configurable FrameFactory for the HTTP/2 H2 stream multiplexer in the apache/httpcomponents-core repository. He introduced a constructor parameter to enable injection of custom frame factories, updating bootstrap wiring to propagate this configurability across both client and server components. This approach, implemented in Java and leveraging network programming expertise, established a foundation for runtime tuning of HTTP/2 frame handling. By documenting the changes with clear commit messages and integrating the solution across modules, Marco’s work enhanced the flexibility and testability of the codebase, addressing the need for targeted performance optimization and easier testing scenarios.