Worked on the flutter/packages repository to enhance the MDnsClient component by introducing robust error handling for network disruptions. Developed and integrated an optional onError callback into the MDnsClient::start method, enabling the system to gracefully manage stream errors when network connectivity is lost. This approach reduces uncaught exceptions and improves the reliability of multicast DNS discovery in Flutter applications. The implementation included a targeted automated test to verify the new error handling behavior, ensuring alignment with existing onError support in MDnsClient::listen. Utilized Dart as the primary language, focusing on error handling and networking to deliver a more resilient client experience.