From c4a9a4fc0f398d9f34743b3235543d5d36e810c1 Mon Sep 17 00:00:00 2001
From: sta <sta.blockhead@gmail.com>
Date: Tue, 26 May 2020 19:33:57 +0900
Subject: [PATCH] [Modify] Replace it

---
 websocket-sharp/Net/WebHeaderCollection.cs | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/websocket-sharp/Net/WebHeaderCollection.cs b/websocket-sharp/Net/WebHeaderCollection.cs
index a1507f3e..86f7289e 100644
--- a/websocket-sharp/Net/WebHeaderCollection.cs
+++ b/websocket-sharp/Net/WebHeaderCollection.cs
@@ -1770,7 +1770,17 @@ namespace WebSocketSharp.Net
       var key = header.ToString ();
       var name = getHeaderName (key);
 
-      doWithCheckingState (setWithoutCheckingName, name, value, true, true);
+      value = checkValue (value);
+
+      checkRestricted (name, true);
+      checkAllowed (true);
+
+      base.Set (name, value);
+
+      if (_state != HttpHeaderType.Unspecified)
+        return;
+
+      _state = HttpHeaderType.Response;
     }
 
     /// <summary>