/*
* 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.imagine.step1.client;
import org.apache.mina.core.RuntimeIoException;
import org.apache.mina.core.future.ConnectFuture;
import org.apache.mina.core.service.IoHandlerAdapter;
import org.apache.mina.core.session.IoSession;
import org.apache.mina.example.imagine.step1.ImageRequest;
import org.apache.mina.example.imagine.step1.ImageResponse;
import org.apache.mina.example.imagine.step1.server.ImageServer;
import org.apache.mina.example.imagine.step1.codec.ImageCodecFactory;
import org.apache.mina.filter.codec.ProtocolCodecFilter;
import org.apache.mina.transport.socket.SocketConnector;
import org.apache.mina.transport.socket.nio.NioSocketConnector;
import java.net.InetSocketAddress;
/**
* client for the {@link ImageServer}
*
* @author The Apache MINA Project (dev@mina.apache.org)
* @version $Rev: 597940 $, $Date: 2007-11-25 02:00:09 +0100 (Sun, 25 Nov 2007) $
*/
public class ImageClient extends IoHandlerAdapter {
public static final int CONNECT_TIMEOUT = 3000;
private String host;
private int port;
private SocketConnector connector;
private IoSession session;
private ImageListener imageListener;
public ImageClient(String host, int port, ImageListener imageListener) {
this.host = host;
this.port = port;
this.imageListener = imageListener;
connector = new NioSocketConnector();
connector.getFilterChain().addLast("codec", new ProtocolCodecFilter(new ImageCodecFactory(true)));
connector.setHandler(this);
}
public boolean isConnected() {
return (session != null && session.isConnected());
}
public void connect() {
ConnectFuture connectFuture = connector.connect(new InetSocketAddress(host, port));
connectFuture.awaitUninterruptibly(CONNECT_TIMEOUT);
try {
session = connectFuture.getSession();
}
catch (RuntimeIoException e) {
imageListener.onException(e);
}
}
public void disconnect() {
if (session != null) {
session.close(true).awaitUninterruptibly(CONNECT_TIMEOUT);
session = null;
}
}
public void sessionOpened(IoSession session) throws Exception {
imageListener.sessionOpened();
}
public void sessionClosed(IoSession session) throws Exception {
imageListener.sessionClosed();
}
public void sendRequest(ImageRequest imageRequest) {
if (session == null) {
//noinspection ThrowableInstanceNeverThrown
imageListener.onException(new Throwable("not connected"));
} else {
session.write(imageRequest);
}
}
public void messageReceived(IoSession session, Object message) throws Exception {
ImageResponse response = (ImageResponse) message;
imageListener.onImages(response.getImage1(), response.getImage2());
}
public void exceptionCaught(IoSession session, Throwable cause) throws Exception {
imageListener.onException(cause);
}
}