In May 2025, Adrian Drum worked on the mrousavy/expo repository, focusing on improving the reliability of network operations in iOS applications. He addressed a crash that occurred during network requests when invalid TLS certificates were encountered, updating the ExpoRequestInterceptorProtocol to prevent recursive delegate calls and ensure correct task delegate handling. This bug fix, implemented in Swift and documented in Markdown, enhanced the stability of the Expo network stack by reducing the risk of crashes and supporting more dependable app behavior. Adrian’s work demonstrated depth in network programming and careful attention to protocol design, contributing to a smoother developer experience.