Jack Bates created TS-2589:
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Summary: Headers delayed until the origin server starts sending
content
Key: TS-2589
URL: https://issues.apache.org/jira/browse/TS-2589
Project: Traffic Server
Issue Type: Bug
Reporter: Jack Bates
If there is a transform (for example a null transform) then the response
headers aren't forwarded until the origin server starts sending content.
Normally (without a transform) the headers are forwarded as soon as they are
done, whether content is available yet or not.
The headers are sent when the transform calls TSVConnWrite() and the transform
is called at the end of the headers/start of the content. But it's not called
if the available content is empty. A possible fix is to call the transform at
the start of the content whether content is available yet or not. This doesn't
affect a buffered transform which can still delay and update the headers until
it calls TSVConnWrite()
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