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Avoid sending "Connection: keep-alive" when shutting down.
When a worker process is shutting down, keepalive is not used: this is checked
before the ngx_http_set_keepalive() call in ngx_http_finalize_connection().
Yet the "Connection: keep-alive" header was still sent, even if we know that
the worker process is shutting down, potentially resulting in additional
requests being sent to the connection which is going to be closed anyway.
While clients are expected to be able to handle asynchronous close events
(see ticket #1022), it is certainly possible to send the "Connection: close"
header instead, informing the client that the connection is going to be closed
and potentially saving some unneeded work.
With this change, we additionally check for worker process shutdown just
before sending response headers, and disable keepalive accordingly.
author | Maxim Dounin <mdounin@mdounin.ru> |
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date | Tue, 11 Jan 2022 02:23:49 +0300 |
parents | 1bdf906bba99 |
children |
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geo2nginx.pl by Andrei Nigmatulin The perl script to convert CSV geoip database ( free download at http://www.maxmind.com/app/geoip_country ) to format, suitable for use by the ngx_http_geo_module. unicode2nginx by Maxim Dounin The perl script to convert unicode mappings ( available at http://www.unicode.org/Public/MAPPINGS/ ) to the nginx configuration file format. Two generated full maps for windows-1251 and koi8-r. vim by Evan Miller Syntax highlighting of nginx configuration for vim, to be placed into ~/.vim/.