Michael Bayne
09f0bee0f3
git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@4602 542714f4-19e9-0310-aa3c-eee0fc999fb1
101 lines
3.0 KiB
Java
101 lines
3.0 KiB
Java
//
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// $Id$
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//
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// Narya library - tools for developing networked games
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// Copyright (C) 2002-2007 Three Rings Design, Inc., All Rights Reserved
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// http://www.threerings.net/code/narya/
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//
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// This library is free software; you can redistribute it and/or modify it
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// under the terms of the GNU Lesser General Public License as published
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// by the Free Software Foundation; either version 2.1 of the License, or
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// (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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package com.threerings.presents.net;
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import java.io.IOException;
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import com.threerings.io.ObjectInputStream;
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import com.threerings.io.ObjectOutputStream;
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public class PingRequest extends UpstreamMessage
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{
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/** The number of milliseconds of idle upstream that are allowed to
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* elapse before the client sends a ping message to the server to let
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* it know that we're still alive. */
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public static final long PING_INTERVAL = 60 * 1000L;
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/**
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* Zero argument constructor used when unserializing an instance.
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*/
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public PingRequest ()
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{
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super();
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}
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/**
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* Returns a timestamp that was obtained when this packet was encoded
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* by the low-level networking code.
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*/
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public long getPackStamp ()
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{
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return _packStamp;
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}
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/**
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* Returns a timestamp that was obtained when this packet was decoded
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* by the low-level networking code.
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*/
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public long getUnpackStamp ()
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{
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return _unpackStamp;
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}
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/**
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* Writes our custom streamable fields.
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*/
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public void writeObject (ObjectOutputStream out)
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throws IOException
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{
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// grab a timestamp noting when we were encoded into a raw buffer
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// for delivery over the network
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_packStamp = System.currentTimeMillis();
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out.defaultWriteObject();
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}
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/**
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* Reads our custom streamable fields.
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*/
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public void readObject (ObjectInputStream in)
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throws IOException, ClassNotFoundException
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{
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// grab a timestamp noting when we were decoded from a raw buffer
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// after being received over the network
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_unpackStamp = System.currentTimeMillis();
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in.defaultReadObject();
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}
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public String toString ()
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{
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return "[type=PING, msgid=" + messageId + "]";
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}
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/** A time stamp obtained when we serialize this object. */
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protected transient long _packStamp;
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/** A time stamp obtained when we unserialize this object (the intent
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* is to get a timestamp as close as possible to when the packet was
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* received on the network). */
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protected transient long _unpackStamp;
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}
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