single-use-socket is a lightweight Node.js library that creates a one‑time, session‑specific virtual WebSocket tied to a single HTTP request/response cycle. It lets a server attach a dedicated socket handler that automatically opens when the browser connects, facilitates bidirectional messaging for that connection only, and cleans up when the socket closes—useful for developers building per‑user, request‑scoped realtime interactions (e.g., single‑page apps or temporary data exchanges).