Worked on enhancing network reliability in the alibaba/PhotonLibOS repository by addressing error handling in C++ network programming. Focused on improving the accuracy of curl-based network operation diagnostics, the developer fixed a bug that previously treated network timeouts as successful completions. By propagating the actual curl timeout error code, the update enabled clearer differentiation between timeouts and normal results, reducing false-positive success signals. This change improved error visibility and observability across the network path, allowing for faster triage and reduced mean time to resolution. The work demonstrated attention to robust error handling and contributed to more reliable network operations in C++.