@Override public void messageReceived(NextFilter nextFilter, IoSession session, Object message) throws Exception { if (message instanceof RtspRequest) { for (ControlProvider provider : providers) provider.receivedRequest(session, (RtspRequest) message); } else if (message instanceof RtspResponse) { for (ControlProvider provider : providers) provider.receivedResponse(session, (RtspResponse) message); } else { log.error("Expecting a RtspRequest. Received a {}", message.getClass().getName()); } // Forward message nextFilter.messageReceived(session, message); }