Worked on improving the robustness of the OkHttp SSE client within the ktorio/ktor repository by addressing issues related to improper closure of SSE sources and the incoming channel during cancellation or error scenarios. Focused on backend development using Kotlin and Java, leveraging coroutines and network programming techniques to ensure clean shutdown of SSE sessions and reduce the risk of resource leaks or crashes. Enhanced the reliability of the SSE client by adding targeted tests for cancellation and timeout cases, which helps prevent regressions. The work emphasized thorough testing and careful resource management to deliver a more stable backend networking component.