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.smtpserver.core; 23 24 import java.util.ArrayList; 25 import java.util.Collection; 26 27 import org.apache.james.dsn.DSNStatus; 28 import org.apache.james.smtpserver.CommandHandler; 29 import org.apache.james.smtpserver.SMTPSession; 30 31 /** 32 * Handles NOOP command 33 */ 34 public class NoopCmdHandler implements CommandHandler { 35 36 /** 37 * The name of the command handled by the command handler 38 */ 39 private final static String COMMAND_NAME = "NOOP"; 40 41 /** 42 * Handler method called upon receipt of a NOOP command. 43 * Just sends back an OK and logs the command. 44 * 45 * @see org.apache.james.smtpserver.CommandHandler#onCommand(SMTPSession) 46 */ 47 public void onCommand(SMTPSession session) { 48 String responseString = "250 "+DSNStatus.getStatus(DSNStatus.SUCCESS,DSNStatus.UNDEFINED_STATUS)+" OK"; 49 session.writeResponse(responseString); 50 } 51 52 /** 53 * @see org.apache.james.smtpserver.CommandHandler#getImplCommands() 54 */ 55 public Collection getImplCommands() { 56 Collection implCommands = new ArrayList(); 57 implCommands.add("NOOP"); 58 59 return implCommands; 60 } 61 }