}
if (request == null) {
// A response message without request. Swallow the event because
// the response might have arrived too late.
IoSessionLogger logger = IoSessionLogger.getLogger(session, getClass());
if (logger.isWarnEnabled()) {
logger.warn("Unknown request ID '" + requestId
+ "' for the response message. Timed out already?: "
+ message);
}
} else {
// Found a matching request.