From 45a72e9b88bcc4d875b45f0063ab0ddb8452e2bf Mon Sep 17 00:00:00 2001
From: sta <sta.blockhead@gmail.com>
Date: Mon, 9 Mar 2020 20:53:51 +0900
Subject: [PATCH] [Modify] Polish it

---
 websocket-sharp/Net/WebHeaderCollection.cs | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/websocket-sharp/Net/WebHeaderCollection.cs b/websocket-sharp/Net/WebHeaderCollection.cs
index 2b943019..ca66fbe0 100644
--- a/websocket-sharp/Net/WebHeaderCollection.cs
+++ b/websocket-sharp/Net/WebHeaderCollection.cs
@@ -831,9 +831,12 @@ namespace WebSocketSharp.Net
 
     private static string checkValue (string value)
     {
-      if (value == null || value.Length == 0)
+      if (value == null)
         return String.Empty;
 
+      if (value.Length == 0)
+        return value;
+
       value = value.Trim ();
 
       if (value.Length > 65535) {