// TUTORIAL HOW TO KAPA package hu.ppke.itk.itkStock.nio.protocol; public class ClientsideAuthenticationProtocolCommandWorker extends AbstractProtocolCommandWorker { @Override public synchronized ProtocolMessage response(ProtocolMessage msg) { System.out.println("Client got: " + msg.toString()); ProtocolMessage rsp = new ProtocolMessage(ProtocolTools.serverToClientError, "thanks".getBytes()); System.out.println("Client sent: " + rsp.toString()); return rsp; } }