Socket.io JWT Auth

Socket.io authentication middleware using JSON Web Tokens (JWT). Current stable version is 0.2.0. This package provides a simple way to authenticate Socket.io connections by verifying a JWT token passed as a query parameter (or auth object for Socket.io v3+). It supports custom secret, algorithm selection, and optional succeedWithoutToken mode for guest connections. The package is designed for Socket.io >= 1.0 and is commonly used to protect WebSocket endpoints. Unlike more modern alternatives like socketio-jwt (which is more actively maintained), socketio-jwt-auth has a simple API but has not seen updates since 2018.