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//
// ========================================================================
// 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.spdy;
import org.eclipse.jetty.spdy.api.DataInfo;
// TODO: add methods that tell how much written and whether we're TCP congested ?
public interface FlowControlStrategy
{
public int getWindowSize(ISession session);
public void setWindowSize(ISession session, int windowSize);
public void onNewStream(ISession session, IStream stream);
public void onWindowUpdate(ISession session, IStream stream, int delta);
public void updateWindow(ISession session, IStream stream, int delta);
public void onDataReceived(ISession session, IStream stream, DataInfo dataInfo);
public void onDataConsumed(ISession session, IStream stream, DataInfo dataInfo, int delta);
public static class None implements FlowControlStrategy
{
private volatile int windowSize;
public None()
{
this(65536);
}
public None(int windowSize)
{
this.windowSize = windowSize;
}
@Override
public int getWindowSize(ISession session)
{
return windowSize;
}
@Override
public void setWindowSize(ISession session, int windowSize)
{
this.windowSize = windowSize;
}
@Override
public void onNewStream(ISession session, IStream stream)
{
stream.updateWindowSize(windowSize);
}
@Override
public void onWindowUpdate(ISession session, IStream stream, int delta)
{
}
@Override
public void updateWindow(ISession session, IStream stream, int delta)
{
}
@Override
public void onDataReceived(ISession session, IStream stream, DataInfo dataInfo)
{
}
@Override
public void onDataConsumed(ISession session, IStream stream, DataInfo dataInfo, int delta)
{
}
}
}
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