From 909f4914ccfe659b40ae477da07a73e5a5f8da4f Mon Sep 17 00:00:00 2001
From: sta <sta.blockhead@gmail.com>
Date: Mon, 27 Nov 2017 14:41:10 +0900
Subject: [PATCH] [Modify] Polish it

---
 websocket-sharp/WebSocket.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/websocket-sharp/WebSocket.cs b/websocket-sharp/WebSocket.cs
index a3690cab..745a629c 100644
--- a/websocket-sharp/WebSocket.cs
+++ b/websocket-sharp/WebSocket.cs
@@ -968,7 +968,7 @@ namespace WebSocketSharp
 
       if (!_ignoreExtensions) {
         var extensions = headers["Sec-WebSocket-Extensions"];
-        if (!validateSecWebSocketExtensionsClientHeader (extensions)) {
+        if (extensions != null && extensions.Length == 0) {
           message = "It includes an invalid Sec-WebSocket-Extensions header.";
           return false;
         }