require Ruby 2.6 or laterky/require-ruby-2.6

Drop support for Ruby 2.3, 2.4, and 2.5.

As of 2021-10, Ruby 2.6 is the oldest version that still receives
security fixes from the Ruby core team, so it doesn't make much sense
to keep code for those ancient versions.

1 files changed, 1 insertions, 11 deletions

diff --git a/lib/openssl/buffering.rb b/lib/openssl/buffering.rb
index 116179d2..d47e1082 100644
--- a/lib/openssl/buffering.rb
+++ b/lib/openssl/buffering.rb
@@ -99,16 +99,6 @@ module OpenSSL::Buffering
     end
   end
 
-  if "".respond_to?(:unpack1)
-    def unpack_byte(str)
-      str.unpack1("C")
-    end
-  else
-    def unpack_byte(str)
-      str.unpack("C").first
-    end
-  end
-
   public
 
   # call-seq:
@@ -117,7 +107,7 @@ module OpenSSL::Buffering
   # Get the next 8bit byte from `ssl`.  Returns `nil` on EOF
   def getbyte
     byte = read(1)
-    byte && unpack_byte(byte)
+    byte && byte.unpack1("C")
   end
 
   ##