From c2dd7beb903ced14c774a7ef63e6ef226e670bd6 Mon Sep 17 00:00:00 2001
From: sta <sta.blockhead@gmail.com>
Date: Sat, 28 Apr 2018 20:43:06 +0900
Subject: [PATCH] [Modify] Add it

---
 .../Net/WebSockets/TcpListenerWebSocketContext.cs   | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/websocket-sharp/Net/WebSockets/TcpListenerWebSocketContext.cs b/websocket-sharp/Net/WebSockets/TcpListenerWebSocketContext.cs
index e26d99cb..69f8f7c9 100644
--- a/websocket-sharp/Net/WebSockets/TcpListenerWebSocketContext.cs
+++ b/websocket-sharp/Net/WebSockets/TcpListenerWebSocketContext.cs
@@ -430,6 +430,19 @@ namespace WebSocketSharp.Net.WebSockets
 
     #endregion
 
+    #region Private Methods
+
+    private HttpRequest sendAuthenticationChallenge (string challenge)
+    {
+      var res = HttpResponse.CreateUnauthorizedResponse (challenge);
+      var bytes = res.ToByteArray ();
+      _stream.Write (bytes, 0, bytes.Length);
+
+      return HttpRequest.Read (_stream, 15000);
+    }
+
+    #endregion
+
     #region Internal Methods
 
     internal bool Authenticate (