Stream: filters.
diff --git a/src/event/ngx_event_connect.c b/src/event/ngx_event_connect.c
index 06534ef..c5bb806 100644
--- a/src/event/ngx_event_connect.c
+++ b/src/event/ngx_event_connect.c
@@ -166,6 +166,7 @@
     } else { /* type == SOCK_DGRAM */
         c->recv = ngx_udp_recv;
         c->send = ngx_send;
+        c->send_chain = ngx_udp_send_chain;
     }
 
     c->log_error = pc->log_error;