Source Code Cross Referenced for IoHandler.java in  » Net » mina-2.0.0-M1 » org » apache » mina » common » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Net » mina 2.0.0 M1 » org.apache.mina.common 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


01:        /*
02:         *  Licensed to the Apache Software Foundation (ASF) under one
03:         *  or more contributor license agreements.  See the NOTICE file
04:         *  distributed with this work for additional information
05:         *  regarding copyright ownership.  The ASF licenses this file
06:         *  to you under the Apache License, Version 2.0 (the
07:         *  "License"); you may not use this file except in compliance
08:         *  with the License.  You may obtain a copy of the License at
09:         *
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.common;
21:
22:        import java.io.IOException;
23:
24:        /**
25:         * Handles all I/O events fired by MINA.
26:         *
27:         * @author The Apache MINA Project (dev@mina.apache.org)
28:         * @version $Rev: 576217 $, $Date: 2007-09-16 17:55:27 -0600 (Sun, 16 Sep 2007) $
29:         *
30:         * @see IoHandlerAdapter
31:         */
32:        public interface IoHandler {
33:            /**
34:             * Invoked from an I/O processor thread when a new connection has been created.
35:             * Because this method is supposed to be called from the same thread that
36:             * handles I/O of multiple sessions, please implement this method to perform
37:             * tasks that consumes minimal amount of time such as socket parameter
38:             * and user-defined session attribute initialization.
39:             */
40:            void sessionCreated(IoSession session) throws Exception;
41:
42:            /**
43:             * Invoked when a connection has been opened.  This method is invoked after
44:             * {@link #sessionCreated(IoSession)}.  The biggest difference from
45:             * {@link #sessionCreated(IoSession)} is that it's invoked from other thread
46:             * than an I/O processor thread once thread modesl is configured properly.
47:             */
48:            void sessionOpened(IoSession session) throws Exception;
49:
50:            /**
51:             * Invoked when a connection is closed.
52:             */
53:            void sessionClosed(IoSession session) throws Exception;
54:
55:            /**
56:             * Invoked with the related {@link IdleStatus} when a connection becomes idle.
57:             * This method is not invoked if the transport type is UDP; it's a known bug,
58:             * and will be fixed in 2.0.
59:             */
60:            void sessionIdle(IoSession session, IdleStatus status)
61:                    throws Exception;
62:
63:            /**
64:             * Invoked when any exception is thrown by user {@link IoHandler}
65:             * implementation or by MINA.  If <code>cause</code> is instanceof
66:             * {@link IOException}, MINA will close the connection automatically.
67:             */
68:            void exceptionCaught(IoSession session, Throwable cause)
69:                    throws Exception;
70:
71:            /**
72:             * Invoked when a message is received.
73:             */
74:            void messageReceived(IoSession session, Object message)
75:                    throws Exception;
76:
77:            /**
78:             * Invoked when a message written by {@link IoSession#write(Object)} is
79:             * sent out.
80:             */
81:            void messageSent(IoSession session, Object message)
82:                    throws Exception;
83:        }
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