Events: moved sockets cloning to ngx_event_init_conf().

Previously, listenings sockets were not cloned if the worker_processes
directive was specified after "listen ... reuseport".

This also simplifies upcoming configuration check on the number
of worker connections, as it needs to know the number of listening
sockets before cloning.

src/core/ngx_connection.c

@@ -96,7 +96,7 @@ ngx_create_listening(ngx_conf_t *cf, struct sockaddr *sockaddr,
 
 
 ngx_int_t
-ngx_clone_listening(ngx_conf_t *cf, ngx_listening_t *ls)
+ngx_clone_listening(ngx_cycle_t *cycle, ngx_listening_t *ls)
 {
 #if (NGX_HAVE_REUSEPORT)
 
@@ -104,20 +104,19 @@ ngx_clone_listening(ngx_conf_t *cf, ngx_listening_t *ls)
     ngx_core_conf_t  *ccf;
     ngx_listening_t   ols;
 
-    if (!ls->reuseport) {
+    if (!ls->reuseport || ls->worker != 0) {
         return NGX_OK;
     }
 
     ols = *ls;
 
-    ccf = (ngx_core_conf_t *) ngx_get_conf(cf->cycle->conf_ctx,
-                                           ngx_core_module);
+    ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
 
     for (n = 1; n < ccf->worker_processes; n++) {
 
         /* create a socket for each worker process */
 
-        ls = ngx_array_push(&cf->cycle->listening);
+        ls = ngx_array_push(&cycle->listening);
         if (ls == NULL) {
             return NGX_ERROR;
         }

src/core/ngx_connection.h

@@ -210,7 +210,7 @@ struct ngx_connection_s {
 
 ngx_listening_t *ngx_create_listening(ngx_conf_t *cf, struct sockaddr *sockaddr,
     socklen_t socklen);
-ngx_int_t ngx_clone_listening(ngx_conf_t *cf, ngx_listening_t *ls);
+ngx_int_t ngx_clone_listening(ngx_cycle_t *cycle, ngx_listening_t *ls);
 ngx_int_t ngx_set_inherited_sockets(ngx_cycle_t *cycle);
 ngx_int_t ngx_open_listening_sockets(ngx_cycle_t *cycle);
 void ngx_configure_listening_sockets(ngx_cycle_t *cycle);

src/event/ngx_event.c

@@ -410,12 +410,37 @@ ngx_handle_write_event(ngx_event_t *wev, size_t lowat)
 static char *
 ngx_event_init_conf(ngx_cycle_t *cycle, void *conf)
 {
+#if (NGX_HAVE_REUSEPORT)
+    ngx_uint_t        i;
+    ngx_listening_t  *ls;
+#endif
+
     if (ngx_get_conf(cycle->conf_ctx, ngx_events_module) == NULL) {
         ngx_log_error(NGX_LOG_EMERG, cycle->log, 0,
                       "no \"events\" section in configuration");
         return NGX_CONF_ERROR;
     }
 
+#if (NGX_HAVE_REUSEPORT)
+
+    ls = cycle->listening.elts;
+    for (i = 0; i < cycle->listening.nelts; i++) {
+
+        if (!ls[i].reuseport || ls[i].worker != 0) {
+            continue;
+        }
+
+        if (ngx_clone_listening(cycle, &ls[i]) != NGX_OK) {
+            return NGX_CONF_ERROR;
+        }
+
+        /* cloning may change cycle->listening.elts */
+
+        ls = cycle->listening.elts;
+    }
+
+#endif
+
     return NGX_CONF_OK;
 }
 

src/http/ngx_http.c

@@ -1685,10 +1685,6 @@ ngx_http_init_listening(ngx_conf_t *cf, ngx_http_conf_port_t *port)
             break;
         }
 
-        if (ngx_clone_listening(cf, ls) != NGX_OK) {
-            return NGX_ERROR;
-        }
-
         addr++;
         last--;
     }

src/stream/ngx_stream.c

@@ -538,10 +538,6 @@ ngx_stream_optimize_servers(ngx_conf_t *cf, ngx_array_t *ports)
                 break;
             }
 
-            if (ngx_clone_listening(cf, ls) != NGX_OK) {
-                return NGX_CONF_ERROR;
-            }
-
             addr++;
             last--;
         }