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19 package org.eclipse.jetty.spdy.generator;
20
21 import java.nio.ByteBuffer;
22
23 import org.eclipse.jetty.io.ByteBufferPool;
24 import org.eclipse.jetty.spdy.frames.ControlFrame;
25 import org.eclipse.jetty.spdy.frames.WindowUpdateFrame;
26 import org.eclipse.jetty.util.BufferUtil;
27
28 public class WindowUpdateGenerator extends ControlFrameGenerator
29 {
30 public WindowUpdateGenerator(ByteBufferPool bufferPool)
31 {
32 super(bufferPool);
33 }
34
35 @Override
36 public ByteBuffer generate(ControlFrame frame)
37 {
38 WindowUpdateFrame windowUpdate = (WindowUpdateFrame)frame;
39
40 int frameBodyLength = 8;
41 int totalLength = ControlFrame.HEADER_LENGTH + frameBodyLength;
42 ByteBuffer buffer = getByteBufferPool().acquire(totalLength, Generator.useDirectBuffers);
43 BufferUtil.clearToFill(buffer);
44 generateControlFrameHeader(windowUpdate, frameBodyLength, buffer);
45
46 buffer.putInt(windowUpdate.getStreamId() & 0x7F_FF_FF_FF);
47 buffer.putInt(windowUpdate.getWindowDelta() & 0x7F_FF_FF_FF);
48
49 buffer.flip();
50 return buffer;
51 }
52 }