Skip to content

HTTPS clone URL

Subversion checkout URL

You can clone with HTTPS or Subversion.

Download ZIP
Fetching contributors…

Cannot retrieve contributors at this time

74 lines (64 sloc) 2.467 kb
//
// $Id$
//
// Narya library - tools for developing networked games
// Copyright (C) 2002-2012 Three Rings Design, Inc., All Rights Reserved
// http://code.google.com/p/narya/
//
// This library is free software; you can redistribute it and/or modify it
// under the terms of the GNU Lesser General Public License as published
// by the Free Software Foundation; either version 2.1 of the License, or
// (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
package com.threerings.presents.net {
import com.threerings.io.ObjectInputStream;
import com.threerings.io.ObjectOutputStream;
import com.threerings.io.Streamable;
import com.threerings.util.Short;
public /* abstract */ class UpstreamMessage
implements Streamable
{
/** This is a unique (within the context of a reasonable period
* of time) identifier assigned to each upstream message. The message ids
* are used to correlate a downstream response message to the
* appropriate upstream request message. */
public var messageId :int;
/**
* Construct an upstream message.
*/
public function UpstreamMessage ()
{
// automatically generate a valid message id
this.messageId = nextMessageId();
}
// documentation inherited from interface Streamable
public function writeObject (out :ObjectOutputStream) :void
{
out.writeShort(messageId);
}
// documentation inherited from interface Streamable
public final function readObject (ins :ObjectInputStream) :void
{
throw new Error(); // abstract: not needed
}
/**
* Returns the next message id suitable for use by an upstream message./
*/
protected static function nextMessageId () :int
{
_nextMessageId = (_nextMessageId + 1) % Short.MAX_VALUE;
return _nextMessageId;
}
/** This is used to generate monotonically increasing message ids on the
* client as new messages are generated. */
protected static var _nextMessageId :int;
}
}
Jump to Line
Something went wrong with that request. Please try again.