From 94df6cfa9fa0452fb947b13b4d683f08984cb77f Mon Sep 17 00:00:00 2001
From: Kazuki Yamaguchi <k@rhe.jp>
Date: Thu, 8 Jun 2017 21:15:59 +0900
Subject: Require HTTP 1.1 for downloading message(s)

Chunked transfer encoding is a feature of HTTP version 1.1.
---
 lib/puke/server.rb | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/puke/server.rb b/lib/puke/server.rb
index 432d84a..5149ffa 100644
--- a/lib/puke/server.rb
+++ b/lib/puke/server.rb
@@ -56,6 +56,7 @@ EOF
     # NB: Puke::ConcatenatedIO is not really an IO object and
     # 'res.body.is_a?(IO)' returns false, leading the non-existent 'bytesize'
     # method to be called by WEBrick, unless chunked response is enabled.
+    req.http_version >= "1.1" or (res.status = 505 and return)
     res.chunked = true
 
     case unya
-- 
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