During November 2025, Lukasz Walkiewicz addressed a nuanced networking issue in the trinodb/trino repository by implementing a workaround for TLS Server Name Indication (SNI) with single-label domains. He developed a custom SSLSocketFactory in Java to ensure SNI host names are correctly set for sockets connecting to such domains, resolving certificate resolution problems that can arise in the JDK’s TLS implementation. Lukasz complemented this fix with comprehensive tests to validate SSL behavior and prevent regressions. His work improved the reliability of TLS handshakes and enhanced client compatibility for deployments using single-label domain configurations, demonstrating depth in Java and SSL/TLS.