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 package com.sun.grizzly.utils;

 import com.sun.grizzly.UDPConnectorHandler;

 import java.io.IOException;

 import java.net.InetSocketAddress;

 import java.net.SocketAddress;

 import java.nio.ByteBuffer;

 /**

  * UDP client that exercise the non blocking ConnectorHandler.

  *

  * @author Jeanfrancois Arcand

  */

 public class NonBlockingUDPIOClient implements NonBlockingIOClient {

     private String host;

     private int port;

     private UDPConnectorHandler udpConnectorHandler;

     public NonBlockingUDPIOClient(String host, int port) {

         this.host = host;

         this.port = port;

     }

     public void connect() throws IOException {

         udpConnectorHandler = new UDPConnectorHandler();

         udpConnectorHandler.connect(new InetSocketAddress(host,port));

     }

     public void send(byte[] msg) throws IOException {

         udpConnectorHandler.send(ByteBuffer.wrap(msg),

                 new InetSocketAddress(host,port));

     }

     public void send(byte[] msg, boolean needFlush) throws IOException {

         throw new UnsupportedOperationException("Not supported for UDP.");

     }

     public int receive(byte[] buf) throws IOException {

         return receive(buf, buf.length);

     }

     public int receive(byte[] buf, int length) throws IOException {

         ByteBuffer byteBuffer = ByteBuffer.wrap(buf,0,length);

         SocketAddress sa = udpConnectorHandler.receive(byteBuffer);

         System.out.println("sa: " + sa);

         System.out.println("nRead: " + byteBuffer.position());

         return byteBuffer.position();

     }

     public void close() throws IOException {

         if (udpConnectorHandler != null) {

             udpConnectorHandler.close();

         }

     }

 }