buffering: let #write accept multiple argumentsky/ssl-write-multi

As of Ruby 2.5, IO#write accepts multiple input strings and writes them
at once[1]. Follow that.

[1] https://bugs.ruby-lang.org/issues/9323

1 files changed, 5 insertions, 3 deletions

diff --git a/lib/openssl/buffering.rb b/lib/openssl/buffering.rb
index 8b5dd9da..935f61f0 100644
--- a/lib/openssl/buffering.rb
+++ b/lib/openssl/buffering.rb
@@ -339,9 +339,11 @@ module OpenSSL::Buffering
   # Writes _s_ to the stream.  If the argument is not a String it will be
   # converted using +.to_s+ method.  Returns the number of bytes written.
 
-  def write(s)
-    do_write(s)
-    s.bytesize
+  def write(*s)
+    s.inject(0) do |written, str|
+      do_write(str)
+      written + str.bytesize
+    end
   end
 
   ##