[PATCH] Disabled cloning of sockets without master process (ticket #2403)

[Maxim Dounin]

# HG changeset patch
# User Maxim Dounin <mdounin at mdounin.ru>
# Date 1667097682 -10800
#      Sun Oct 30 05:41:22 2022 +0300
# Node ID b73d95226c84b93e51f23f7b35782d98d3b516b9
# Parent  55bcf8dc4ee35ccf40f5b8a7cffde63e7edb9494
Disabled cloning of sockets without master process (ticket #2403).

Cloning of listening sockets for each worker process does not make sense
when working without master process, and causes some of the connections
not to be accepted if worker_processes is set to more than one and there
are listening sockets configured with the reuseport flag.  Fix is to
disable cloning when master process is disabled.

diff --git a/src/event/ngx_event.c b/src/event/ngx_event.c
--- a/src/event/ngx_event.c
+++ b/src/event/ngx_event.c
@@ -416,6 +416,7 @@ ngx_event_init_conf(ngx_cycle_t *cycle, 
 {
 #if (NGX_HAVE_REUSEPORT)
     ngx_uint_t        i;
+    ngx_core_conf_t  *ccf;
     ngx_listening_t  *ls;
 #endif
 
@@ -442,7 +443,9 @@ ngx_event_init_conf(ngx_cycle_t *cycle, 
 
 #if (NGX_HAVE_REUSEPORT)
 
-    if (!ngx_test_config) {
+    ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
+
+    if (!ngx_test_config && ccf->master) {
 
         ls = cycle->listening.elts;
         for (i = 0; i < cycle->listening.nelts; i++) {