express-socket.io-session

Share a cookie-based express-session middleware with socket.io. Works with Express >=4.0.0 and socket.io >=1.0.0. The current stable version is 1.3.5, released 2018-07-07, with no further updates expected (last release over 6 years ago). It provides access to the Express session object via socket.handshake.session. Key differentiator: simple drop-in middleware that reuses the same express-session instance, avoiding the need for a separate session store. Alternative approaches include using JWT or custom middleware with socket.io's own session management.