From fded706989548a6f80aa7605ce70b7d20e49edb7 Mon Sep 17 00:00:00 2001
From: 杨宇千 <crupest@outlook.com>
Date: Thu, 1 Aug 2019 21:22:55 +0800
Subject: Expired token now has a unique code.

---
 Timeline/Services/UserService.cs | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'Timeline/Services/UserService.cs')

diff --git a/Timeline/Services/UserService.cs b/Timeline/Services/UserService.cs
index c63ded1e..3164a645 100644
--- a/Timeline/Services/UserService.cs
+++ b/Timeline/Services/UserService.cs
@@ -208,6 +208,9 @@ namespace Timeline.Services
 
         public async Task<UserInfo> VerifyToken(string token)
         {
+            if (token == null)
+                throw new ArgumentNullException(nameof(token));
+
             TokenInfo tokenInfo;
             try
             {
-- 
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