Mina 应用之——代理服务器

/*
 *  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 a.proxy.test;

import java.net.InetSocketAddress;
import java.net.SocketAddress;

import org.apache.mina.core.RuntimeIoException;
import org.apache.mina.core.future.ConnectFuture;
import org.apache.mina.core.future.IoFutureListener;
import org.apache.mina.core.service.IoConnector;
import org.apache.mina.core.session.IoSession;


public class ClientToProxyIoHandler extends AbstractProxyIoHandler {
    private final ServerToProxyIoHandler connectorHandler = new ServerToProxyIoHandler();

    private final IoConnector connector;

    private final SocketAddress[] remoteAddress;

    public ClientToProxyIoHandler(IoConnector connector,
            SocketAddress[] remoteAddress) {
        this.connector = connector;
        this.remoteAddress = remoteAddress;
        connector.setHandler(connectorHandler);
    }
    InetSocketAddress isas[]=new InetSocketAddress[]{
    		new InetSocketAddress("113.31.18.232", 22),
    		new InetSocketAddress("113.31.18.233", 22),
    		new InetSocketAddress("113.31.18.234", 22),
    		new InetSocketAddress("113.31.18.235", 22),
    		new InetSocketAddress("113.31.18.236", 22),
    	
    		
    };
    int k=0;
    @Override
    public void sessionOpened(final IoSession session) throws Exception {
       
    
        //isa[(k++)%isa.length]
        SocketAddress isa= remoteAddress[(k++)%remoteAddress.length];
        System.out.println("#$#$"+isa);
      
        connector.connect(isa).addListener(new IoFutureListener<ConnectFuture>() {
            public void operationComplete(ConnectFuture future) {
              
                try {
                    future.getSession().setAttribute(OTHER_IO_SESSION, session);
                    session.setAttribute(OTHER_IO_SESSION, future.getSession());
                    IoSession session2 = future.getSession();
                    session2.resumeRead();
                    session2.resumeWrite();
                } catch (RuntimeIoException e) {
                    // Connect failed
                    session.close(true);
                } finally {
                    session.resumeRead();
                    session.resumeWrite();
                 
                }
            }
        });
    }
}

/*
 *  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 a.proxy.test;

import java.nio.charset.Charset;

import org.apache.mina.core.buffer.IoBuffer;
import org.apache.mina.core.service.IoHandlerAdapter;
import org.apache.mina.core.session.IoSession;


public abstract class AbstractProxyIoHandler extends IoHandlerAdapter {
    private static final Charset CHARSET = Charset.forName("iso8859-1");
    public static final String OTHER_IO_SESSION = AbstractProxyIoHandler.class.getName()+".OtherIoSession";

  
    @Override
    public void sessionCreated(IoSession session) throws Exception {
        session.suspendRead();
        session.suspendWrite();
    }

    @Override
    public void sessionClosed(IoSession session) throws Exception {
        if (session.getAttribute( OTHER_IO_SESSION ) != null) {
            IoSession sess = (IoSession) session.getAttribute(OTHER_IO_SESSION);
            sess.setAttribute(OTHER_IO_SESSION, null);
            sess.close(false);
            session.setAttribute(OTHER_IO_SESSION, null);
        }
    }

    @Override
    public void messageReceived(IoSession session, Object message)
            throws Exception {
        IoBuffer rb = (IoBuffer) message;
        IoBuffer wb = IoBuffer.allocate(rb.remaining());
        rb.mark();
        wb.put(rb);
        wb.flip();
        ((IoSession) session.getAttribute(OTHER_IO_SESSION)).write(wb);
        rb.reset();
    
    }
}

/*
 *  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 a.proxy.test;

import java.net.InetSocketAddress;

import org.apache.mina.core.service.IoConnector;
import org.apache.mina.transport.socket.nio.NioSocketAcceptor;
import org.apache.mina.transport.socket.nio.NioSocketConnector;
public class Main {
    public static void main(String[] args2) throws Exception {
        // Create TCP/IP acceptor.
        NioSocketAcceptor acceptor = new NioSocketAcceptor();
        IoConnector connector = new NioSocketConnector();
        connector.setConnectTimeoutMillis(30*1000L);
        ClientToProxyIoHandler handler = new ClientToProxyIoHandler(connector,	new InetSocketAddress[]{ new InetSocketAddress("127.0.0.1", 80)});
        acceptor.setHandler(handler);
        acceptor.bind(new InetSocketAddress(777));
        System.out.println("Listening on port " + 777);
    }


}