http‑attach is a tiny Node.js library that lets you plug middleware‑style functionality directly onto an existing `http.Server` or `https.Server` without pulling in a full web framework. It works by replacing the server’s `request` handler with a chainable function (providing a `next()` callback) so modules can register themselves (e.g., `myMiddleware.attach(server)`) much like `socket.io.attach(httpServer)`. The package is aimed at developers building reusable HTTP services or plugins that need to integrate with any server instance, regardless of whether they use Express, Connect, Hapi, or no framework at all.