In particular, you'll be interested in the usage of HttpServletHttpServletRequestFilter.
https://github.com/uklance/tapestry-atmosphere/blob/master/tapestry-atmosphere/src/main/java/org/lazan/t5/atmosphere/services/internal/HttpServletHttpServletRequestFilter.java https://github.com/uklance/tapestry-atmosphere/blob/master/tapestry-atmosphere/src/main/java/org/lazan/t5/atmosphere/services/internal/AtmosphereHttpServletRequestFilter.java https://github.com/uklance/tapestry-atmosphere/blob/master/tapestry-atmosphere/src/main/java/org/lazan/t5/atmosphere/services/AtmosphereModule.java#L82