Pengpeng contributed to the apache/thrift repository by enhancing SSL error handling within the C GLib layer. Focusing on the thrift_ssl_socket_get_ssl_error() function, Pengpeng replaced fixed-size buffers with a GString-based approach, leveraging C programming skills and expertise in buffer management and error handling. This change eliminated the risk of buffer overflows and improved the clarity and maintainability of error messages in SSL paths. The update, aligned with THRIFT-5931, resulted in more robust and reliable error reporting for GLib bindings. Pengpeng’s work addressed a critical bug, demonstrating careful attention to security and maintainability in C-based networked systems.