From 0bc6833114ae1c94863aa5d8637189c2ac7f665a Mon Sep 17 00:00:00 2001
From: sta <sta.blockhead@gmail.com>
Date: Mon, 10 Dec 2018 21:48:10 +0900
Subject: [PATCH] [Modify] Add it

---
 websocket-sharp/Net/CookieCollection.cs | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/websocket-sharp/Net/CookieCollection.cs b/websocket-sharp/Net/CookieCollection.cs
index cbfe39fa..0aaf456a 100644
--- a/websocket-sharp/Net/CookieCollection.cs
+++ b/websocket-sharp/Net/CookieCollection.cs
@@ -403,6 +403,25 @@ namespace WebSocketSharp.Net
       return new List<string> (value.SplitHeaderValue (',', ';')).ToArray ();
     }
 
+    private static string urlDecode (string s, Encoding encoding)
+    {
+      if (s == null)
+        return s;
+
+      if (s.Length == 0)
+        return s;
+
+      if (s.IndexOfAny (new[] { '%', '+' }) == -1)
+        return s;
+
+      try {
+        return HttpUtility.UrlDecode (s, encoding);
+      }
+      catch {
+        return null;
+      }
+    }
+
     #endregion
 
     #region Internal Methods