// associating the request with the originating HttpServletRequest.
LogoutRequest request = new LogoutRequest(logoutRequest, getThreadLocalRequest());
LogoutResponse response = null;
if (request.isTrackingEnabled())
logger.trace("Received by DMP servlet:\n" + request.toOIF());
try {
// Ensure that the session is valid - if it isn't, an error reponse
// will be returned.
response = (LogoutResponse) securityManager.validateSession(request);