1 /**************************************************************** 2 * Licensed to the Apache Software Foundation (ASF) under one * 3 * or more contributor license agreements. See the NOTICE file * 4 * distributed with this work for additional information * 5 * regarding copyright ownership. The ASF licenses this file * 6 * to you under the Apache License, Version 2.0 (the * 7 * "License"); you may not use this file except in compliance * 8 * with the License. You may obtain a copy of the License at * 9 * * 10 * http://www.apache.org/licenses/LICENSE-2.0 * 11 * * 12 * Unless required by applicable law or agreed to in writing, * 13 * software distributed under the License is distributed on an * 14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * 15 * KIND, either express or implied. See the License for the * 16 * specific language governing permissions and limitations * 17 * under the License. * 18 ****************************************************************/ 19 20 21 22 package org.apache.james.pop3server; 23 24 /** 25 * Handles NOOP command 26 */ 27 public class NoopCmdHandler implements CommandHandler { 28 29 /** 30 * @see org.apache.james.pop3server.CommandHandler#onCommand(POP3Session) 31 */ 32 public void onCommand(POP3Session session) { 33 doNOOP(session,session.getCommandArgument()); 34 } 35 36 /** 37 * Handler method called upon receipt of a NOOP command. 38 * Like all good NOOPs, does nothing much. 39 * 40 * @param argument the first argument parsed by the parseCommand method 41 */ 42 private void doNOOP(POP3Session session,String argument) { 43 String responseString = null; 44 if (session.getHandlerState() == POP3Handler.TRANSACTION) { 45 responseString = POP3Handler.OK_RESPONSE; 46 session.writeResponse(responseString); 47 } else { 48 responseString = POP3Handler.ERR_RESPONSE; 49 session.writeResponse(responseString); 50 } 51 } 52 53 54 }