| // |
| // ======================================================================== |
| // Copyright (c) 1995-2015 Mort Bay Consulting Pty. Ltd. |
| // ------------------------------------------------------------------------ |
| // All rights reserved. This program and the accompanying materials |
| // are made available under the terms of the Eclipse Public License v1.0 |
| // and Apache License v2.0 which accompanies this distribution. |
| // |
| // The Eclipse Public License is available at |
| // http://www.eclipse.org/legal/epl-v10.html |
| // |
| // The Apache License v2.0 is available at |
| // http://www.opensource.org/licenses/apache2.0.php |
| // |
| // You may elect to redistribute this code under either of these licenses. |
| // ======================================================================== |
| // |
| |
| package org.eclipse.jetty.websocket.server.examples.echo; |
| |
| import java.nio.ByteBuffer; |
| import java.util.concurrent.CountDownLatch; |
| import java.util.concurrent.TimeUnit; |
| |
| import org.eclipse.jetty.websocket.api.Session; |
| import org.eclipse.jetty.websocket.api.annotations.WebSocket; |
| |
| @WebSocket |
| public class EchoBroadcastPingSocket extends EchoBroadcastSocket |
| { |
| private static class KeepAlive extends Thread |
| { |
| private CountDownLatch latch; |
| private Session session; |
| |
| public KeepAlive(Session session) |
| { |
| this.session = session; |
| } |
| |
| @Override |
| public void run() |
| { |
| try |
| { |
| while (!latch.await(10,TimeUnit.SECONDS)) |
| { |
| System.err.println("Ping"); |
| ByteBuffer data = ByteBuffer.allocate(3); |
| data.put(new byte[] |
| { (byte)1, (byte)2, (byte)3 }); |
| data.flip(); |
| session.getRemote().sendPing(data); |
| } |
| } |
| catch (Exception e) |
| { |
| e.printStackTrace(); |
| } |
| } |
| |
| public void shutdown() |
| { |
| if (latch != null) |
| { |
| latch.countDown(); |
| } |
| } |
| |
| @Override |
| public synchronized void start() |
| { |
| latch = new CountDownLatch(1); |
| super.start(); |
| } |
| } |
| |
| private KeepAlive keepAlive; // A dedicated thread is not a good way to do this |
| |
| public EchoBroadcastPingSocket() |
| { |
| } |
| |
| @Override |
| public void onClose(int statusCode, String reason) |
| { |
| keepAlive.shutdown(); |
| super.onClose(statusCode,reason); |
| } |
| |
| @Override |
| public void onOpen(Session session) |
| { |
| if (keepAlive == null) |
| { |
| keepAlive = new KeepAlive(session); |
| } |
| keepAlive.start(); |
| super.onOpen(session); |
| } |
| } |