org.eclipse.jetty.spdy.generator.GoAwayGenerator Maven / Gradle / Ivy
//
// ========================================================================
// Copyright (c) 1995-2017 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.generator;
import java.nio.ByteBuffer;
import org.eclipse.jetty.io.ByteBufferPool;
import org.eclipse.jetty.spdy.api.SPDY;
import org.eclipse.jetty.spdy.frames.ControlFrame;
import org.eclipse.jetty.spdy.frames.GoAwayFrame;
import org.eclipse.jetty.util.BufferUtil;
public class GoAwayGenerator extends ControlFrameGenerator
{
public GoAwayGenerator(ByteBufferPool bufferPool)
{
super(bufferPool);
}
@Override
public ByteBuffer generate(ControlFrame frame)
{
GoAwayFrame goAway = (GoAwayFrame)frame;
int frameBodyLength = 8;
int totalLength = ControlFrame.HEADER_LENGTH + frameBodyLength;
ByteBuffer buffer = getByteBufferPool().acquire(totalLength, Generator.useDirectBuffers);
BufferUtil.clearToFill(buffer);
generateControlFrameHeader(goAway, frameBodyLength, buffer);
buffer.putInt(goAway.getLastStreamId() & 0x7F_FF_FF_FF);
writeStatusCode(goAway, buffer);
buffer.flip();
return buffer;
}
private void writeStatusCode(GoAwayFrame goAway, ByteBuffer buffer)
{
switch (goAway.getVersion())
{
case SPDY.V2:
break;
case SPDY.V3:
buffer.putInt(goAway.getStatusCode());
break;
default:
throw new IllegalStateException();
}
}
}