- * Simple HttpServlet which outputs XML containing a list of all authorized
- * configurations for the current user.
+ * Simple ServletContextListener which loads a WebSocket tunnel implementation
+ * if available, using the Servlet 3.0 API to dynamically load and install
+ * the tunnel servlet.
+ *
+ * Note that because Guacamole depends on the Servlet 2.5 API, and 3.0 may
+ * not be available or needed if WebSocket is not desired, the 3.0 API is
+ * detected and invoked dynamically via reflection.