From 2a4999b6b851645109abb0918236afc78548f771 Mon Sep 17 00:00:00 2001
From: Alexey Diomin <xhumanoid@gmail.com>
Date: Mon, 24 Mar 2014 18:36:54 +0300
Subject: [PATCH] [#2339] Reduce memory usage in
 ProtobufVarint32LengthFieldPrepender

Motivation:

Reduce memory usage in ProtobufVarint32LengthFieldPrepender.

Modifications:

Explicit set the buffer size that is needed for the header (between 1 and 5 bytes).

Result:

Less memory usage in ProtobufVarint32LengthFieldPrepender.
---
 .../codec/protobuf/ProtobufVarint32LengthFieldPrepender.java    | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/codec/src/main/java/io/netty/handler/codec/protobuf/ProtobufVarint32LengthFieldPrepender.java b/codec/src/main/java/io/netty/handler/codec/protobuf/ProtobufVarint32LengthFieldPrepender.java
index b9231781d8..9efd00ff26 100644
--- a/codec/src/main/java/io/netty/handler/codec/protobuf/ProtobufVarint32LengthFieldPrepender.java
+++ b/codec/src/main/java/io/netty/handler/codec/protobuf/ProtobufVarint32LengthFieldPrepender.java
@@ -47,7 +47,7 @@ public class ProtobufVarint32LengthFieldPrepender extends MessageToByteEncoder<B
         out.ensureWritable(headerLen + bodyLen);
 
         CodedOutputStream headerOut =
-                CodedOutputStream.newInstance(new ByteBufOutputStream(out));
+                CodedOutputStream.newInstance(new ByteBufOutputStream(out), headerLen);
         headerOut.writeRawVarint32(bodyLen);
         headerOut.flush();