From 88d6566d0b72429e792553bd405f767d34155d8a Mon Sep 17 00:00:00 2001
From: MSP-Greg <Greg.mpls@gmail.com>
Date: Thu, 8 Apr 2021 22:23:39 -0500
Subject: [PATCH] minissl.rb - allow chaining with '<<', improve/simplify write

---
 lib/puma/minissl.rb | 33 ++++++++++++++++++---------------
 1 file changed, 18 insertions(+), 15 deletions(-)

diff --git a/lib/puma/minissl.rb b/lib/puma/minissl.rb
index 64534872fb..d6b05370bc 100644
--- a/lib/puma/minissl.rb
+++ b/lib/puma/minissl.rb
@@ -114,31 +114,34 @@ def read_nonblock(size, *_)
         end
       end
 
+      # When returning a large response body (2MB), Ubuntu works fine with
+      # `syswrite`, but macOS & Windows have OpenSSL errors on the client.
+      #
       def write(data)
         return 0 if data.empty?
+        n = 0
+        byte_size = data.bytesize
+        enc_wr = ''.dup
+        enc = nil
 
-        data_size = data.bytesize
-        need = data_size
+        while n < byte_size
+          n += @engine.write(n == 0 ? data : data.byteslice(n..-1))
 
-        while true
-          wrote = @engine.write data
+          enc_wr << enc while (enc = @engine.extract)
 
-          enc_wr = ''.dup
-          while (enc = @engine.extract)
-            enc_wr << enc
-          end
           @socket.write enc_wr unless enc_wr.empty?
-
-          need -= wrote
-
-          return data_size if need == 0
-
-          data = data.byteslice(wrote..-1)
+          enc_wr.clear
         end
+        enc.clear unless enc.nil?
+        byte_size
       end
 
       alias_method :syswrite, :write
-      alias_method :<<, :write
+
+      def <<(data)
+        write data
+        self
+      end
 
       # This is a temporary fix to deal with websockets code using
       # write_nonblock.