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package org.glassfish.grizzly.samples.echo;

import java.io.IOException;
import java.nio.charset.Charset;
import java.util.logging.Logger;

import org.glassfish.grizzly.filterchain.FilterChainBuilder;
import org.glassfish.grizzly.filterchain.TransportFilter;
import org.glassfish.grizzly.nio.transport.TCPNIOTransport;
import org.glassfish.grizzly.nio.transport.TCPNIOTransportBuilder;
import org.glassfish.grizzly.utils.StringFilter;

/**
 * Class initializes and starts the echo server, based on Grizzly 2.0
 *
 * @author Alexey Stashok
 */
public class EchoServer extends Thread{
    private static final Logger logger = Logger.getLogger(EchoServer.class.getName());

    public static final String HOST = "localhost";
    public static final int PORT = 7777;

    final TCPNIOTransport transport;
    
    public EchoServer() throws IOException, InterruptedException {
        // Create a FilterChain using FilterChainBuilder
        FilterChainBuilder filterChainBuilder = FilterChainBuilder.stateless();

        // Add TransportFilter, which is responsible
        // for reading and writing data to the connection
        filterChainBuilder.add(new TransportFilter());

        // StringFilter is responsible for Buffer <-> String conversion
        filterChainBuilder.add(new StringFilter(Charset.forName("UTF-8"),"\r\n"));

        // EchoFilter is responsible for echoing received messages
        filterChainBuilder.add(new EchoFilter());
        
        // Create TCP transport
        transport =
                TCPNIOTransportBuilder.newInstance().build();
        
        transport.setProcessor(filterChainBuilder.build());
//        this.start();
    }
    
    
    @Override
	public void run() {
    	try {
            // binding transport to start listen on certain host and port
            transport.bind(HOST, PORT);

            // start the transport
            transport.start();

            logger.info("Press any key to stop the server...");

        synchronized (this) {
			wait();
		}
        } catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (InterruptedException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} finally {
            logger.info("Stopping transport...");
            // stop the transport
            try {
				transport.shutdownNow();
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}

            logger.info("Stopped transport...");
        }
	}


	public void stopServer()
    {
    	synchronized (this) {
        	notify();	
		}
    }
}
