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Update listen backlog on reload and stop enforcing default backlog #12977

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Update listen backlog on reload and stop enforcing default backlog #12977

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1851e77
Add support for adjusting the listen backlog when reloading php-fpm and
vnsavage Dec 19, 2023
8fabfe8
Update the messaging about the backlog being changed
vnsavage Dec 19, 2023
c203b8f
Fix typo with wp->config- >name
vnsavage Dec 20, 2023
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1 change: 0 additions & 1 deletion sapi/fpm/fpm/fpm_conf.c
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Expand Up @@ -916,7 +916,6 @@ static int fpm_conf_process_all_pools(void)

if (config->listen_backlog < FPM_BACKLOG_DEFAULT) {
zlog(ZLOG_WARNING, "[pool %s] listen.backlog(%d) was too low for the ondemand process manager. I updated it for you to %d.", wp->config->name, config->listen_backlog, FPM_BACKLOG_DEFAULT);
config->listen_backlog = FPM_BACKLOG_DEFAULT;
}

/* certainly useless but proper */
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1 change: 1 addition & 0 deletions sapi/fpm/fpm/fpm_sockets.c
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Expand Up @@ -278,6 +278,7 @@ static int fpm_sockets_get_listening_socket(struct fpm_worker_pool_s *wp, struct

sock = fpm_sockets_hash_op(0, sa, 0, wp->listen_address_domain, FPM_GET_USE_SOCKET);
if (sock >= 0) {
listen(sock, wp->config->listen_backlog); /* change backlog via listen() */
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For correctness we should check the return value of listen even though it is unlikely to fail. This is actually good to verify the we got a correct socket.

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It would be also good to have a test that does reload and changes the configuration to make that covered.

return sock;
}

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