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Java > Open Source Codes > org > apache > mina > example > proxy > AbstractProxyIoHandler


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 package org.apache.mina.example.proxy;
21
22 import java.nio.charset.Charset JavaDoc;
23
24 import org.apache.mina.common.ByteBuffer;
25 import org.apache.mina.common.IoHandlerAdapter;
26 import org.apache.mina.common.IoSession;
27 import org.apache.mina.common.TrafficMask;
28 import org.apache.mina.util.SessionLog;
29
30 /**
31  * Base class of {@link org.apache.mina.common.IoHandler} classes which handle
32  * proxied connections.
33  *
34  * @author The Apache Directory Project (mina-dev@directory.apache.org)
35  * @version $Rev$, $Date$
36  *
37  */
38 public abstract class AbstractProxyIoHandler extends IoHandlerAdapter {
39     private static Charset JavaDoc CHARSET = Charset.forName("iso8859-1");
40
41     public void sessionCreated(IoSession session) throws Exception JavaDoc {
42         session.setTrafficMask(TrafficMask.NONE);
43     }
44
45     public void sessionClosed(IoSession session) throws Exception JavaDoc {
46         if (session.getAttachment() != null) {
47             ((IoSession) session.getAttachment()).setAttachment(null);
48             ((IoSession) session.getAttachment()).close();
49             session.setAttachment(null);
50         }
51     }
52
53     public void messageReceived(IoSession session, Object JavaDoc message)
54             throws Exception JavaDoc {
55         ByteBuffer rb = (ByteBuffer) message;
56         ByteBuffer wb = ByteBuffer.allocate(rb.remaining());
57         rb.mark();
58         wb.put(rb);
59         wb.flip();
60         ((IoSession) session.getAttachment()).write(wb);
61         rb.reset();
62         SessionLog.info(session, rb.getString(CHARSET.newDecoder()));
63     }
64 }
65
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