[8.12] Fix leaked HTTP response sent after close (#105293)#105305
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elasticsearchmachine merged 2 commits intoelastic:8.12from Feb 8, 2024
Merged
[8.12] Fix leaked HTTP response sent after close (#105293)#105305elasticsearchmachine merged 2 commits intoelastic:8.12from
elasticsearchmachine merged 2 commits intoelastic:8.12from
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Today a `HttpResponse` is always released via a `ChannelPromise` which means the release happens on a network thread. However, it's possible we try and send a `HttpResponse` after the node has got far enough through shutdown that it doesn't have any running network threads left, which means the response just leaks. This is no big deal in production, it becomes irrelevant when the process exits, but in tests we start and stop many nodes within the same process so mustn't leak anything. At this point in shutdown, all HTTP channels are now closed, so it's sufficient to check whether the channel is open first, and to fail the listener on the calling thread if not. That's what this commit does. Closes elastic#104651
DaveCTurner
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:Distributed/Network
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Backports the following commits to 8.12: