diff --git a/trunk/src/app/srs_app_rtmp_conn.cpp b/trunk/src/app/srs_app_rtmp_conn.cpp
index 35b19f902..9ac1d3340 100644
--- a/trunk/src/app/srs_app_rtmp_conn.cpp
+++ b/trunk/src/app/srs_app_rtmp_conn.cpp
@@ -245,6 +245,7 @@ int SrsRtmpConn::service_cycle()
     }
     
     // do token traverse before serve it.
+    // @see https://github.com/winlinvip/simple-rtmp-server/pull/239
     bool vhost_is_edge = _srs_config->get_vhost_is_edge(req->vhost);
     bool edge_traverse = _srs_config->get_vhost_edge_token_traverse(req->vhost);
     if (vhost_is_edge && edge_traverse) {
@@ -254,6 +255,7 @@ int SrsRtmpConn::service_cycle()
         }
     }
     
+    // response the client connect ok.
     if ((ret = rtmp->response_connect_app(req, local_ip.c_str())) != ERROR_SUCCESS) {
         srs_error("response connect app failed. ret=%d", ret);
         return ret;