Java tutorial
/* * Copyright 2012 Jotel Ltd. * * Licensed 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 net.jotel.ws.client; import java.io.IOException; import java.nio.charset.Charset; import java.util.Date; import org.apache.commons.lang.CharEncoding; public class WebSocketKeepAliveThread extends Thread { private WebSocketClient wsClient; public WebSocketKeepAliveThread(WebSocketClient wsClient) { super("WebSocket Keep Alive Thread"); setDaemon(true); this.wsClient = wsClient; } @Override public void run() { try { while (true) { Thread.sleep(wsClient.getPingInterval()); // Ping wsClient.trySend(WebSocketClient.PING_OPCODE, new Date().toString().getBytes(Charset.forName(CharEncoding.UTF_8))); } } catch (InterruptedException e) { // ignore; } catch (IOException e) { if (wsClient.isReconnectEnabled()) { new WebSocketReconnectionThread(wsClient).start(); } } } }