From 85a997d5ec36ef07e0c97cc273d5bd1782df8f3d Mon Sep 17 00:00:00 2001
From: Norman Maurer <nmaurer@redhat.com>
Date: Thu, 6 Feb 2014 10:47:59 +0100
Subject: [PATCH] Correctly calculate checksum when using GZIP. Part of [#2168]

---
 .../java/io/netty/handler/codec/compression/JdkZlibEncoder.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/codec/src/main/java/io/netty/handler/codec/compression/JdkZlibEncoder.java b/codec/src/main/java/io/netty/handler/codec/compression/JdkZlibEncoder.java
index aa46372643..39cc3b92c4 100644
--- a/codec/src/main/java/io/netty/handler/codec/compression/JdkZlibEncoder.java
+++ b/codec/src/main/java/io/netty/handler/codec/compression/JdkZlibEncoder.java
@@ -231,7 +231,7 @@ public class JdkZlibEncoder extends ZlibEncoder {
         }
 
         if (wrapper == ZlibWrapper.GZIP) {
-            crc.update(inAry);
+            crc.update(inAry, offset, len);
         }
 
         deflater.setInput(inAry, offset, len);