/*
* Copyright (c) 2012 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.eclipse.jetty.spdy.generator;
import java.nio.ByteBuffer;
import org.eclipse.jetty.spdy.ByteBufferPool;
import org.eclipse.jetty.spdy.api.SPDY;
import org.eclipse.jetty.spdy.frames.ControlFrame;
import org.eclipse.jetty.spdy.frames.GoAwayFrame;
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, true);
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();
}
}
}