From 9450a898202f7e94b8e99006aa4889478213393d Mon Sep 17 00:00:00 2001
From: LiJohnson <598420668@163.com>
Date: Thu, 3 Aug 2017 18:57:05 +0800
Subject: [PATCH] =?UTF-8?q?=E5=85=BC=E5=AE=B9renew=E5=8F=82=E6=95=B0=20cas?=
 =?UTF-8?q?4.x=20=E7=89=88=E6=9C=AC?=
MIME-Version: 1.0
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---
 index.js | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/index.js b/index.js
index a09fe0c..faacfd3 100644
--- a/index.js
+++ b/index.js
@@ -249,10 +249,12 @@ CASAuthentication.prototype._login = function(req, res, next) {
 
     // Set up the query parameters.
     var query = {
-        service: this.service_url + url.parse(req.url).pathname,
-        renew: this.renew
+        service: this.service_url + url.parse(req.url).pathname
     };
 
+    if( this.renew ) query.renew = this.renew;
+
+
     // Redirect to the CAS login.
     res.redirect( this.cas_url + url.format({
         pathname: '/login',