During February 2025, 4thel00z focused on stabilizing Signal Server communications in the netbirdio/netbird repository. They addressed a critical bug in context propagation, ensuring that message sending and stream handling used the correct context throughout the signaling path. Their work involved backend development in Go, leveraging network programming and gRPC to improve system reliability. In addition to the bug fix, 4thel00z refactored variable names for greater code clarity and enhanced error handling during peer registration and message forwarding. These targeted improvements contributed to the robustness and maintainability of the Signal Server, reducing failure modes and supporting more stable peer communications.