/****************************************************************
 * 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.james.imapserver.netty;

import java.net.InetSocketAddress;
import java.util.concurrent.TimeUnit;

import org.apache.james.imap.api.process.ImapSession;
import org.apache.james.protocols.impl.ChannelAttributeSupport;
import org.jboss.netty.channel.ChannelHandlerContext;
import org.jboss.netty.handler.timeout.IdleState;
import org.jboss.netty.handler.timeout.IdleStateHandler;
import org.jboss.netty.util.Timer;

/**
 * {@link IdleStateHandler} which will call {@link ImapSession#logout()} if the connected client did not receive or send any traffic in a given timeframe
 * 
 *
 */
public class ImapIdleStateHandler extends IdleStateHandler implements ChannelAttributeSupport{

	public ImapIdleStateHandler(Timer timer, long allIdleTime, TimeUnit unit) {
		super(timer, 0, 0, allIdleTime, unit);
	}

	@Override
	protected void channelIdle(ChannelHandlerContext ctx, IdleState state,
			long lastActivityTimeMillis) throws Exception {
		
		// check if the client did nothing for too long
		if (state.equals(IdleState.ALL_IDLE)) {
	        ImapSession session = (ImapSession) attributes.get(ctx.getChannel());
	        InetSocketAddress address = (InetSocketAddress) ctx.getChannel().getRemoteAddress();
	        
	       
	        session.getLog().info("Logout client "+ address.getHostName() + " (" + address.getAddress().getHostAddress()+ ") because it idled for too long...");
	        
	        // logout the client
	        session.logout();

		}
	}

}

@@ -1698,16 +1698,19 @@
 %7D if the
+%0A *
  connect
@@ -1782,16 +1782,17 @@
 e%0A * %0A *
+ 
 %0A */%0Apub
@@ -1885,12 +1885,16 @@
 port
+ 
 %7B%0A%0A
-%09
+    
 publ
@@ -1965,18 +1965,24 @@
 unit) %7B%0A
-%09%09
+        
 super(ti
@@ -2016,13 +2016,19 @@
 t);%0A
-%09%7D%0A%0A%09
+    %7D%0A%0A    
 @Ove
@@ -2033,17 +2033,20 @@
 verride%0A
-%09
+    
 protecte
@@ -2111,12 +2111,9 @@
 ate,
-%0A%09%09%09
+ 
 long
@@ -2160,13 +2160,17 @@
 n %7B%0A
-%09%09%0A%09%09
+%0A        
 // c
@@ -2213,18 +2213,24 @@
 oo long%0A
-%09%09
+        
 if (stat
@@ -2261,17 +2261,20 @@
 DLE)) %7B%0A
-%09
+    
         
@@ -2343,17 +2343,20 @@
 nel());%0A
-%09
+    
         
@@ -2444,28 +2444,13 @@
 ();%0A
-%09        %0A%09       %0A%09
+%0A    
     
@@ -2491,16 +2491,17 @@
 client %22
+ 
 + addres
@@ -2562,16 +2562,17 @@
 ddress()
+ 
 + %22) bec
@@ -2608,27 +2608,21 @@
 %22);%0A
-%09  
+%0A
       
-%0A%09 
       
- 
 // l
@@ -2638,17 +2638,20 @@
  client%0A
-%09
+    
         
@@ -2673,13 +2673,22 @@
 );%0A%0A
-%09%09%7D%0A%09
+        %7D%0A    
 %7D%0A%0A%7D

Replace tabs with spaces