diff --git a/lib/roles/http/server/server.c b/lib/roles/http/server/server.c
index 5f4b628a7..b44f16cc5 100644
--- a/lib/roles/http/server/server.c
+++ b/lib/roles/http/server/server.c
@@ -86,7 +86,7 @@ _lws_vhost_init_server_af(struct vh_sock_args *a)
 {
 	struct lws_context *cx = a->vhost->context;
 	struct lws_context_per_thread *pt;
-	int n, opt = 1, limit = 1;
+	int n, opt = 1, limit = 1, san = 2;
 	lws_sockfd_type sockfd;
 	struct lws *wsi;
 	int m = 0, is;
@@ -104,6 +104,9 @@ _lws_vhost_init_server_af(struct vh_sock_args *a)
 
 deal:
 
+	if (!san--)
+		return -1;
+
 	if (a->vhost->iface) {
 
 		/*