9e53abbb7a
git-svn-id: https://jmonkeyengine.googlecode.com/svn/trunk@6971 75d07b2b-3a1a-0410-a2c5-0572b91ccdca
125 lines
4.5 KiB
Java
125 lines
4.5 KiB
Java
/*
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* Copyright (c) 2009-2010 jMonkeyEngine
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* * Neither the name of 'jMonkeyEngine' nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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package jme3test.network;
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import com.jme3.network.connection.Client;
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import com.jme3.network.connection.Server;
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import com.jme3.network.events.MessageAdapter;
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import com.jme3.network.message.Message;
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import com.jme3.network.serializing.Serializable;
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import com.jme3.network.serializing.Serializer;
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import com.jme3.network.sync.MovingAverage;
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import java.io.IOException;
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public class TestLatency extends MessageAdapter {
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private static long startTime;
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private static Client client;
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private static MovingAverage average = new MovingAverage(100);
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static {
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startTime = System.currentTimeMillis();
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}
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private static long getTime(){
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return System.currentTimeMillis() - startTime;
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}
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@Serializable
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public static class TimestampMessage extends Message {
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long timeSent = 0;
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long timeReceived = 0;
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public TimestampMessage(){
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setReliable(false);
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}
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public TimestampMessage(long timeSent, long timeReceived){
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setReliable(false);
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this.timeSent = timeSent;
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this.timeReceived = timeReceived;
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}
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}
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@Override
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public void messageReceived(Message msg){
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TimestampMessage timeMsg = (TimestampMessage) msg;
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try {
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if (timeMsg.timeReceived == 0){
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TimestampMessage outMsg = new TimestampMessage(timeMsg.timeSent, getTime());
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msg.getClient().send(outMsg);
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}else{
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long curTime = getTime();
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//System.out.println("Time sent: " + timeMsg.timeSent);
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//System.out.println("Time received by server: " + timeMsg.timeReceived);
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//System.out.println("Time recieved by client: " + curTime);
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long latency = (curTime - timeMsg.timeSent);
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System.out.println("Latency: " + (latency) + " ms");
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//long timeOffset = ((timeMsg.timeSent + curTime) / 2) - timeMsg.timeReceived;
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//System.out.println("Approximate timeoffset: "+ (timeOffset) + " ms");
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average.add(latency);
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System.out.println("Average latency: " + average.getAverage());
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long latencyOffset = latency - average.getAverage();
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System.out.println("Latency offset: " + latencyOffset);
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client.send(new TimestampMessage(getTime(), 0));
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}
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} catch (IOException ex) {
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ex.printStackTrace();
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}
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}
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public static void main(String[] args) throws IOException, InterruptedException{
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Serializer.registerClass(TimestampMessage.class);
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Server server = new Server(5110, 5110);
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server.start();
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client = new Client("localhost", 5110, 5110);
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client.start();
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client.addMessageListener(new TestLatency(), TimestampMessage.class);
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server.addMessageListener(new TestLatency(), TimestampMessage.class);
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Thread.sleep(1);
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client.send(new TimestampMessage(getTime(), 0));
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}
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}
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