From 2e9c43b270c6227623859b01a7abc8b594d8ad26 Mon Sep 17 00:00:00 2001
From: Andrew Svetlov <andrew.svetlov@gmail.com>
Date: Mon, 5 Jan 2015 21:15:40 +0200
Subject: [PATCH] Mention in Sec-WebSocket-Version all versions supported by
 tornado  As RFC 6455 recommends for asnwer for unsopported protocol.

---
 tornado/websocket.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tornado/websocket.py b/tornado/websocket.py
index 5c762adb6..163a8b85c 100644
--- a/tornado/websocket.py
+++ b/tornado/websocket.py
@@ -179,7 +179,7 @@ class WebSocketHandler(tornado.web.RequestHandler):
             if not self.stream.closed():
                 self.stream.write(tornado.escape.utf8(
                     "HTTP/1.1 426 Upgrade Required\r\n"
-                    "Sec-WebSocket-Version: 8\r\n\r\n"))
+                    "Sec-WebSocket-Version: 7, 8, 13\r\n\r\n"))
                 self.stream.close()
 
 
-- 
2.47.2