Worked on the v2fly/v2ray-core repository to update hysteria2 dependencies and refactor connection handling, focusing on improving both performance and maintainability. The engineering approach involved careful dependency management and enhancements to network programming logic, laying the foundation for smoother future upgrades of hysteria2. By restructuring the integration, the work reduced technical debt and increased the stability of the system under higher load. Utilizing Go as the primary language, the developer emphasized maintainable code and future-proofing, ensuring that the core could better support evolving requirements. This contribution addressed a key feature area and strengthened the overall reliability of the codebase.