/*
    *  Licensed to the Apache Software Foundation (ASF) under one
    *  or more contributor license agreements.  See the NOTICE file
    *  distributed with this work for additional information
    *  regarding copyright ownership.  The ASF licenses this file
    *  to you under the Apache License, Version 2.0 (the
    *  "License"); you may not use this file except in compliance
    *  with the License.  You may obtain a copy of the License at
    *
   *    http://www.apache.org/licenses/LICENSE-2.0
   *
   *  Unless required by applicable law or agreed to in writing,
   *  software distributed under the License is distributed on an
   *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   *  KIND, either express or implied.  See the License for the
   *  specific language governing permissions and limitations
   *  under the License.
   *
   */
  package org.apache.mina.example.echoserver;
  
  import org.apache.mina.core.buffer.IoBuffer;
  import org.apache.mina.core.service.IoHandler;
  import org.apache.mina.core.service.IoHandlerAdapter;
  import org.apache.mina.core.session.IdleStatus;
  import org.apache.mina.core.session.IoSession;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  /**
   * {@link IoHandler} implementation for echo server.
   *
   * @author <a href="http://mina.apache.org">Apache MINA Project</a>
   */
  public class EchoProtocolHandler extends IoHandlerAdapter {
      private final static Logger LOGGER = LoggerFactory.getLogger(EchoProtocolHandler.class);
      
      @Override
      public void sessionCreated(IoSession session) {
          session.getConfig().setIdleTime(IdleStatus.BOTH_IDLE, 10);
      }
  
      @Override
      public void sessionClosed(IoSession session) throws Exception {
          LOGGER.info("CLOSED");
      }
  
      @Override
      public void sessionOpened(IoSession session) throws Exception {
          LOGGER.info("OPENED");
      }
  
      @Override
      public void sessionIdle(IoSession session, IdleStatus status) {
          LOGGER.info("*** IDLE #" + session.getIdleCount(IdleStatus.BOTH_IDLE) + " ***");
      }
  
      @Override
      public void exceptionCaught(IoSession session, Throwable cause) {
          session.closeNow();
      }
  
      @Override
      public void messageReceived(IoSession session, Object message)
              throws Exception {
          LOGGER.info( "Received : " + message );
          // Write the received data back to remote peer
          session.write(((IoBuffer) message).duplicate());
      }
  }