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//
// ========================================================================
// Copyright (c) 1995-2013 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.DataInfo;
import org.eclipse.jetty.spdy.frames.DataFrame;
import org.eclipse.jetty.util.BufferUtil;
public class DataFrameGenerator
{
private final ByteBufferPool bufferPool;
public DataFrameGenerator(ByteBufferPool bufferPool)
{
this.bufferPool = bufferPool;
}
public ByteBuffer generate(int streamId, int length, DataInfo dataInfo)
{
ByteBuffer buffer = bufferPool.acquire(DataFrame.HEADER_LENGTH + length, true);
BufferUtil.clearToFill(buffer);
buffer.limit(length + DataFrame.HEADER_LENGTH);
buffer.position(DataFrame.HEADER_LENGTH);
// Guaranteed to always be >= 0
int read = dataInfo.readInto(buffer);
buffer.putInt(0, streamId & 0x7F_FF_FF_FF);
buffer.putInt(4, read & 0x00_FF_FF_FF);
byte flags = dataInfo.getFlags();
if (dataInfo.available() > 0)
flags &= ~DataInfo.FLAG_CLOSE;
buffer.put(4, flags);
buffer.flip();
return buffer;
}
}
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