From 9a584f4b80259a914713ffa3d57dfc610857adb4 Mon Sep 17 00:00:00 2001
From: sta <sta.blockhead@gmail.com>
Date: Thu, 2 Jul 2020 19:43:35 +0900
Subject: [PATCH] [Modify] Replace it

---
 websocket-sharp/Net/WebHeaderCollection.cs | 17 +----------------
 1 file changed, 1 insertion(+), 16 deletions(-)

diff --git a/websocket-sharp/Net/WebHeaderCollection.cs b/websocket-sharp/Net/WebHeaderCollection.cs
index fdc3663e..75995063 100644
--- a/websocket-sharp/Net/WebHeaderCollection.cs
+++ b/websocket-sharp/Net/WebHeaderCollection.cs
@@ -1599,22 +1599,7 @@ namespace WebSocketSharp.Net
     /// </exception>
     public static bool IsRestricted (string headerName, bool response)
     {
-      if (headerName == null)
-        throw new ArgumentNullException ("headerName");
-
-      if (headerName.Length == 0)
-        throw new ArgumentException ("An empty string.", "headerName");
-
-      headerName = headerName.Trim ();
-
-      if (headerName.Length == 0)
-        throw new ArgumentException ("A string of spaces.", "headerName");
-
-      if (!headerName.IsToken ()) {
-        var msg = "It contains an invalid character.";
-
-        throw new ArgumentException (msg, "headerName");
-      }
+      headerName = checkName (headerName, "headerName");
 
       return isRestricted (headerName, response);
     }