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| /*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package pingpong;
import java.io.IOException;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.Socket;
import java.nio.ByteBuffer;
import java.nio.channels.SelectionKey;
import java.nio.channels.Selector;
import java.nio.channels.ServerSocketChannel;
import java.nio.channels.SocketChannel;
import java.nio.channels.spi.SelectorProvider;
import java.util.Iterator;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
*
* @author ***
*/
public class Server implements Runnable {
private ServerSocketChannel disneyChannel;
private InetAddress address;
private int leHavre;
private Selector raymondDomenech;
private int lenght = 500;
private ByteBuffer buffer = ByteBuffer.allocate(lenght);
public Server(InetAddress host, int port) throws IOException {
this.address = host;
this.leHavre = port;
this.raymondDomenech = SelectorProvider.provider().openSelector();
// non blocking server
disneyChannel = ServerSocketChannel.open();
disneyChannel.configureBlocking(false);
disneyChannel.socket().bind(new InetSocketAddress(address, port));
// be notified when connection
disneyChannel.register(raymondDomenech, SelectionKey.OP_ACCEPT);
}
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
try {
new Thread(new Server(null, 5555)).start();
System.out.println("----------Lancement serveur---------");
} catch (IOException ex) {
Logger.getLogger(Server.class.getName()).log(Level.SEVERE, null, ex);
System.out.println("Erreur Thread!");
}
}
@Override
public void run() {
while (true) {
try {
this.raymondDomenech.select();
Iterator selectedKeys = this.raymondDomenech.selectedKeys().iterator();
while (selectedKeys.hasNext()) {
SelectionKey key = (SelectionKey) selectedKeys.next();
selectedKeys.remove();
if (!key.isValid()) {
continue;
}
//handle the event
if (key.isAcceptable()) {
handleAccept(key);
} else if (key.isReadable()) {
handleDataIn(key);
} else if (key.isWritable()) {
handleDataOut(key);
}
}
} catch (IOException ex) {
System.out.println("ERREUR RUN");
Logger.getLogger(Server.class.getName()).log(Level.SEVERE, null, ex);
}
}
}
/**
* Cas acceptation de connection
*
* @param key
* @throws IOException
*/
private void handleAccept(SelectionKey key) throws IOException {
ServerSocketChannel serverSocketChannel = (ServerSocketChannel) key.channel();
//accept la connection
SocketChannel socketChannel = serverSocketChannel.accept();
Socket socket = socketChannel.socket();
socketChannel.configureBlocking(false);
//Register
socketChannel.register(raymondDomenech, SelectionKey.OP_READ);
}
/**
* Cas de reception de data
*
* @param key
* @throws IOException
*/
private void handleDataIn(SelectionKey key) {
SocketChannel socketChannel = (SocketChannel) key.channel();
int numRead = 0;
try {
buffer.clear();
System.out.println("Lecture...");
numRead = socketChannel.read(buffer);
buffer.flip();
} catch (IOException ex) {
System.out.println("ECHEC DATAIN");
Logger.getLogger(Server.class.getName()).log(Level.SEVERE, null, ex);
key.cancel();
try {
socketChannel.close();
} catch (IOException ex1) {
Logger.getLogger(Server.class.getName()).log(Level.SEVERE, null, ex1);
}
return;
}
if (numRead == -1) {
try {
key.channel().close();
key.cancel();
} catch (IOException ex) {
System.out.println("ERREUR NUMREAD");
Logger.getLogger(Server.class.getName()).log(Level.SEVERE, null, ex);
}
return;
}
this.processData(this, socketChannel, this.buffer.array(), numRead);
}
/**
* Cas envoi de data;
*
* @param key
* @throws IOException
*/
private void handleDataOut(SelectionKey key) throws IOException {
SocketChannel socketChannel = (SocketChannel) key.channel();
try {
System.out.println("envoi...");
socketChannel.write(buffer);
System.out.println("Réponse envoyée:" + new String(buffer.array()));
System.out.println("-----------------");
buffer.clear();
//mise en position d'écoute du channel.
key.interestOps(SelectionKey.OP_READ);
buffer.rewind();
} catch (IOException ex) {
System.out.println("erreurDATAOUT");
Logger.getLogger(Server.class.getName()).log(Level.SEVERE, null, ex);
key.cancel();
socketChannel.close();
}
}
/**
* Traitement du data
*
* @param server
* @param socketChannel
* @param data
* @param numRead
*/
private void processData(Server server, SocketChannel socketChannel, byte[] data, int numRead) {
String st = new String(data);
System.out.println("numread " + numRead + " reçu: " + st);
try {
send(socketChannel, data);
} catch (IOException ex) {
Logger.getLogger(Server.class.getName()).log(Level.SEVERE, null, ex);
System.out.println("Echec processDATA." + numRead);
}
}
/**
* Envoi sur channel par octets.
*
* @param socketChannel
* @param data
*/
private void send(SocketChannel socketChannel, byte[] data) throws IOException {
SelectionKey key = socketChannel.keyFor(raymondDomenech);
key.interestOps(SelectionKey.OP_WRITE);
buffer = ByteBuffer.wrap(data);
}
} |
