Detect and drop broken conns in the fastproxy pool #11212
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What does this PR do?
This pull request fixes the fastproxy pool to detect a broken connection and avoid returning it when a connection is acquired. It also avoids to send the body back to the client when the response status code does not allow it.
Motivation
To avoid bad gateway errors when a backend connection is broken.
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Additional Notes
Co-authored-by: Romain rtribotte@users.noreply.github.com