Hi,
We have upgraded from Jetty 9.3 to 9.4.6 and started seeing NPE errors in
CompressExtensions.
After some digging I believe that it is related to a change in
CompressExtensions.deflate.
It tries to compress the FLUSH_FRAME and throws a NPE as it has no payload.
Adding payload to FLUSH_FRAME doesn't help as it will prevent FrameFlusher
from behaving correctly.
The suggested solution is to change CompressExtensions.deflate to:
private void deflate(FrameEntry entry)
{
Frame frame = entry.frame;
BatchMode batchMode = entry.batchMode;
if (OpCode.isControlFrame(frame.getOpCode()) || frame ==
FrameFlusher.FLUSH_FRAME)
{
// Do not deflate control frames
nextOutgoingFrame(frame,this,batchMode);
return;
}
compress(entry,true);
}
Thank you.
Best regards,
Erel Uziel
Anywhere Software
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