From 9d95c5e3e6a25eb335ad6a5f297f36aecfe21932 Mon Sep 17 00:00:00 2001
From: Shohei Maeda <irt_m.jrsyo@ntworkers.com>
Date: Sun, 6 Jun 2021 18:49:51 +0900
Subject: [PATCH] Send Accept-Encoding header on HEAD method

---
 lib/net/http/generic_request.rb | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/net/http/generic_request.rb b/lib/net/http/generic_request.rb
index 0b812430..38bfc0be 100644
--- a/lib/net/http/generic_request.rb
+++ b/lib/net/http/generic_request.rb
@@ -31,12 +31,12 @@ def initialize(m, reqbody, resbody, uri_or_path, initheader = nil)
 
     @decode_content = false
 
-    if @response_has_body and Net::HTTP::HAVE_ZLIB then
+    if Net::HTTP::HAVE_ZLIB then
       if !initheader ||
          !initheader.keys.any? { |k|
            %w[accept-encoding range].include? k.downcase
          } then
-        @decode_content = true
+        @decode_content = true if @response_has_body
         initheader = initheader ? initheader.dup : {}
         initheader["accept-encoding"] =
           "gzip;q=1.0,deflate;q=0.6,identity;q=0.3"