From 4cd5b328b929a8558171969ef74c504ccde6e0b5 Mon Sep 17 00:00:00 2001
From: sta <sta.blockhead@gmail.com>
Date: Thu, 2 Apr 2020 20:09:10 +0900
Subject: [PATCH] [Modify] Add it

---
 websocket-sharp/Net/WebHeaderCollection.cs | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/websocket-sharp/Net/WebHeaderCollection.cs b/websocket-sharp/Net/WebHeaderCollection.cs
index 5908ac7c..5fa79b7c 100644
--- a/websocket-sharp/Net/WebHeaderCollection.cs
+++ b/websocket-sharp/Net/WebHeaderCollection.cs
@@ -949,6 +949,15 @@ namespace WebSocketSharp.Net
       return null;
     }
 
+    private static string getHeaderName (string key)
+    {
+      HttpHeaderInfo headerInfo;
+
+      return _headers.TryGetValue (key, out headerInfo)
+             ? headerInfo.Name
+             : null;
+    }
+
     private static bool isRestricted (string name, bool response)
     {
       var headerInfo = getHeaderInfo (name);