consistant worker for websocket

templates/nginx.conf

@@ -65,6 +65,7 @@ http {
     upstream socket_nodes {
 	# sticky only on commercial nginx
         # sticky cookie srv_id expires=8h;
+        hash $remote_addr consistent;
 {% for n in range(osp_worker_count) %}
 {% if n != 0 or osp_worker_count == 1 %}
         server 127.0.0.1:{{ osp_worker_start_port + n }};