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plugin_helper/http_server: Ensure request body is closed to prevent socket leaks in POST requests #5231
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…ocket leaks in POST requests Signed-off-by: Shizuo Fujita <fujita@clear-code.com>
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kenhys
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Jan 22, 2026
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LGTM.
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github-actions bot
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Jan 25, 2026
…ocket leaks in POST requests (#5231) **Which issue(s) this PR fixes**: Fixes fluent-plugins-nursery/fluent-plugin-opentelemetry#24 **What this PR does / why we need it**: When using the `http_server` helper to handle POST requests (e.g., in plugins like `fluent-plugin-opentelemetry`), a socket leak occurs, eventually leading to `Errno::EMFILE` (Too many open files). This happens because `Async::HTTP` requires the request body to be fully consumed or explicitly closed to release the resources and allow connection reuse (Keep-Alive). If the body is left unclosed, the socket remains in a CLOSE_WAIT state on the server side indefinitely. **Docs Changes**: N/A **Release Note**: * plugin_helper/http_server: Ensure request body is closed to prevent socket leaks in POST requests Signed-off-by: Shizuo Fujita <fujita@clear-code.com> Signed-off-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
kenhys
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Jan 26, 2026
…osed to prevent socket leaks in POST requests (#5231) (#5234) **Which issue(s) this PR fixes**: Backport #5231 Fixes fluent-plugins-nursery/fluent-plugin-opentelemetry#24 **What this PR does / why we need it**: When using the `http_server` helper to handle POST requests (e.g., in plugins like `fluent-plugin-opentelemetry`), a socket leak occurs, eventually leading to `Errno::EMFILE` (Too many open files). This happens because `Async::HTTP` requires the request body to be fully consumed or explicitly closed to release the resources and allow connection reuse (Keep-Alive). If the body is left unclosed, the socket remains in a CLOSE_WAIT state on the server side indefinitely. **Docs Changes**: N/A **Release Note**: * plugin_helper/http_server: Ensure request body is closed to prevent socket leaks in POST requests Signed-off-by: Shizuo Fujita <fujita@clear-code.com> Signed-off-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com> Co-authored-by: Shizuo Fujita <fujita@clear-code.com>
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Which issue(s) this PR fixes:
Fixes fluent-plugins-nursery/fluent-plugin-opentelemetry#24
What this PR does / why we need it:
When using the
http_serverhelper to handle POST requests (e.g., in plugins likefluent-plugin-opentelemetry),a socket leak occurs, eventually leading to
Errno::EMFILE(Too many open files).This happens because
Async::HTTPrequires the request body to be fully consumed or explicitly closed to release the resources and allow connection reuse (Keep-Alive). If the body is left unclosed, the socket remains in a CLOSE_WAIT state on the server side indefinitely.Docs Changes:
N/A
Release Note: