From 51d5c3e52caeaa32b53e617ab49dab4409d5d3d4 Mon Sep 17 00:00:00 2001
From: sta <sta.blockhead@gmail.com>
Date: Fri, 22 Dec 2017 22:21:15 +0900
Subject: [PATCH] [Modify] Add it

---
 websocket-sharp/Net/HttpListenerRequest.cs | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/websocket-sharp/Net/HttpListenerRequest.cs b/websocket-sharp/Net/HttpListenerRequest.cs
index d6d52253..5ca9868a 100644
--- a/websocket-sharp/Net/HttpListenerRequest.cs
+++ b/websocket-sharp/Net/HttpListenerRequest.cs
@@ -464,6 +464,14 @@ namespace WebSocketSharp.Net
 
     #region Private Methods
 
+    private bool keepAlive ()
+    {
+      var comparison = StringComparison.OrdinalIgnoreCase;
+      return _version > HttpVersion.Version10
+             ? !_headers.Contains ("Connection", "close", comparison)
+             : _headers.Contains ("Connection", "keep-alive", comparison);
+    }
+
     private static bool tryCreateVersion (string version, out Version result)
     {
       try {