During November 2025, You Chen addressed a complex routing conflict in the istio/istio repository by fixing a bug that prevented HTTP and HTTPS servers from coexisting on the same port with different bind addresses. He refactored the conflict detection logic, redesigning the plainTextServers data structure to use the full ServerPort struct as a map key, which improved isolation and accuracy. Working in Go, he also enhanced unit test coverage by introducing targeted tests for HTTPS-first scenarios. This backend development effort improved gateway reliability and stability for mixed HTTP/HTTPS deployments, demonstrating strong skills in API design, networking, and data structure management.