Examples of org.apache.mina.api.IoHandler

org.apache.mina.api.IoHandler
Handle all the I/O events generated by a {@link IoService}.
You should handle your business logic in an IoHandler implementation.
The {@link IoFilter} is dedicated to message transformation, but the IoHandler is mean to be the core of yourbusiness logic.
If you need to implement blocking code in your {@link IoHandler}, then you need to add a {@link IoHandlerExecutor} inthe enclosing {@link IoService}.


            for (int i = size - 1; i >= 0; i--) {
                chain[i].messageSent(this, highLevelMessage);
            }


            IoHandler handler = getService().getIoHandler();


            if (handler != null) {
                IoHandlerExecutor executor = getService().getIoHandlerExecutor();


                if (executor != null) {
                    // asynchronous event
                    executor.execute(new SentEvent(this, highLevelMessage));
                } else {
                    // synchronous call (in the I/O loop)
                    handler.messageSent(this, highLevelMessage);
                }
            }
        } catch (RuntimeException e) {
            processException(e);
        }

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     */
    public void start(int port) throws IOException {
        tcpServer = new NioTcpServer();
        tcpServer.getSessionConfig().setReadBufferSize(128 * 1024);
        tcpServer.getSessionConfig().setTcpNoDelay(true);
        tcpServer.setIoHandler(new IoHandler() {
            public void sessionOpened(IoSession session) {
                session.setAttribute(STATE_ATTRIBUTE, State.WAIT_FOR_FIRST_BYTE_LENGTH);
            }


            public void messageReceived(IoSession session, Object message) {

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    public void callReadNextFilter(Object message) {
        readChainPosition++;


        if (readChainPosition >= chain.length) {
            // end of chain processing
            IoHandler handler = getService().getIoHandler();


            if (handler != null) {
                IoHandlerExecutor executor = getService().getIoHandlerExecutor();


                if (executor != null) {
                    // asynchronous event
                    if (message == tl.get()) {
                        // copy the bytebuffer
                        if (IS_DEBUG) {
                            LOG.debug("copying bytebuffer before pushing to the executor");
                        }


                        ByteBuffer original = (ByteBuffer) message;
                        ByteBuffer clone = ByteBuffer.allocate(original.capacity());
                        // copy from the beginning
                        original.rewind();
                        clone.put(original);
                        original.rewind();
                        clone.flip();
                        executor.execute(new ReceiveEvent(this, clone));
                    } else {
                        executor.execute(new ReceiveEvent(this, message));
                    }
                } else {
                    // synchronous call (in the I/O loop)
                    handler.messageReceived(this, message);
                }
            }
        } else {
            chain[readChainPosition].messageReceived(this, message, this);
        }

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    @Override
    public void start(int port) throws IOException {
        UdpSessionConfig config = new DefaultUdpSessionConfig();
        config.setReadBufferSize(65536);
        udpServer = new BioUdpServer(config, null);
        udpServer.setIoHandler(new IoHandler() {
            @Override
            public void sessionOpened(IoSession session) {
                session.setAttribute(STATE_ATTRIBUTE, State.WAIT_FOR_FIRST_BYTE_LENGTH);
            }

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    @Override
    public void start(int port) throws IOException {
        UdpSessionConfig config = new DefaultUdpSessionConfig();
        config.setReadBufferSize(65536);
        udpServer = new NioUdpServer(config);
        udpServer.setIoHandler(new IoHandler() {
            @Override
            public void sessionOpened(IoSession session) {
                session.setAttribute(STATE_ATTRIBUTE, State.WAIT_FOR_FIRST_BYTE_LENGTH);
            }

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    protected void processException(Exception t) {
        if (IS_DEBUG) {
            LOG.debug("caught session exception ", t);
        }


        IoHandler handler = getService().getIoHandler();


        if (handler != null) {
            handler.exceptionCaught(this, t);
        }
    }

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            for (IoFilter filter : chain) {
                filter.sessionOpened(this);
            }


            IoHandler handler = getService().getIoHandler();


            if (handler != null) {
                IoHandlerExecutor executor = getService().getIoHandlerExecutor();


                if (executor != null) {
                    // asynchronous event
                    executor.execute(new OpenEvent(this));
                } else {
                    // synchronous call (in the I/O loop)
                    handler.sessionOpened(this);
                }
            }
        } catch (RuntimeException e) {
            processException(e);
        }

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        try {
            for (IoFilter filter : chain) {
                filter.sessionClosed(this);
            }


            IoHandler handler = getService().getIoHandler();


            if (handler != null) {
                IoHandlerExecutor executor = getService().getIoHandlerExecutor();
                if (executor != null) {
                    // asynchronous event
                    executor.execute(new CloseEvent(this));
                } else {
                    // synchronous call (in the I/O loop)
                    handler.sessionClosed(this);
                }
            }
        } catch (RuntimeException e) {
            LOG.error("Exception while closing the session : ", e);
        }

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        try {
            for (IoFilter filter : chain) {
                filter.sessionIdle(this, status);
            }


            IoHandler handler = getService().getIoHandler();


            if (handler != null) {
                IoHandlerExecutor executor = getService().getIoHandlerExecutor();


                if (executor != null) {
                    // asynchronous event
                    executor.execute(new IdleEvent(this, status));
                } else {
                    // synchronous call (in the I/O loop)
                    handler.sessionIdle(this, status);
                }
            }
        } catch (RuntimeException e) {
            processException(e);
        }

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            if (chain.length < 1) {
                if (IS_DEBUG) {
                    LOG.debug("Nothing to do, the chain is empty");
                }


                IoHandler handler = getService().getIoHandler();


                if (handler != null) {
                    IoHandlerExecutor executor = getService().getIoHandlerExecutor();


                    if (executor != null) {
                        // asynchronous event
                        // copy the bytebuffer
                        if (IS_DEBUG) {
                            LOG.debug("copying bytebuffer before pushing to the executor");
                        }


                        ByteBuffer original = message;
                        ByteBuffer clone = ByteBuffer.allocate(original.capacity());
                        // copy from the beginning
                        original.rewind();
                        clone.put(original);
                        original.rewind();
                        clone.flip();
                        executor.execute(new ReceiveEvent(this, clone));
                    } else {
                        // synchronous call (in the I/O loop)
                        handler.messageReceived(this, message);
                    }
                }


            } else {
                readChainPosition = 0;

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Related Classes of org.apache.mina.api.IoHandler

org.apache.mina.core.bio.udp.BioUdpBenchmarkServer

org.apache.mina.core.nio.tcp.Mina3TcpBenchmarkClient

org.apache.mina.core.nio.tcp.Mina3TcpBenchmarkServer

org.apache.mina.core.nio.udp.Mina3UdpBenchmarkClient

org.apache.mina.core.nio.udp.Mina3UdpBenchmarkServer

org.apache.mina.session.AbstractIoSession

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