Events: added configuration check on the number of connections.

There should be at least one worker connection for each listening socket,
plus an additional connection for channel between worker and master,
or starting worker processes will fail.

diff --git a/src/event/ngx_event.c b/src/event/ngx_event.c
index a18b1132c934aaa31d3a81c47ed7fac474e49568..69c55d7a0602670cf94bf2f6d9ea5ee75ca9a599 100644 (file)
--- a/src/event/ngx_event.c
+++ b/src/event/ngx_event.c
@@ -421,6 +421,21 @@ ngx_event_init_conf(ngx_cycle_t *cycle, void *conf)
         return NGX_CONF_ERROR;
     }
 
+    if (cycle->connection_n < cycle->listening.nelts + 1) {
+
+        /*
+         * there should be at least one connection for each listening
+         * socket, plus an additional connection for channel
+         */
+
+        ngx_log_error(NGX_LOG_EMERG, cycle->log, 0,
+                      "%ui worker_connections are not enough "
+                      "for %ui listening sockets",
+                      cycle->connection_n, cycle->listening.nelts);
+
+        return NGX_CONF_ERROR;
+    }
+
 #if (NGX_HAVE_REUSEPORT)
 
     ls = cycle->listening.elts;