From 64c8dd325226569bfdb6114ddc9a752cbc4e4033 Mon Sep 17 00:00:00 2001
From: "yaoyao.xyy" <yaoyao.xyy@alibaba-inc.com>
Date: Tue, 2 Aug 2016 11:10:10 +0800
Subject: [PATCH] when deploy registry as a pull through cache ,function
 copeContent() may cause a socket leak when docker user canceled its pull
 operation.

Signed-off-by: yaoyao.xyy <yaoyao.xyy@alibaba-inc.com>
---
 registry/proxy/proxyblobstore.go | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/registry/proxy/proxyblobstore.go b/registry/proxy/proxyblobstore.go
index 7a6d7ea2..6cd57213 100644
--- a/registry/proxy/proxyblobstore.go
+++ b/registry/proxy/proxyblobstore.go
@@ -55,6 +55,8 @@ func (pbs *proxyBlobStore) copyContent(ctx context.Context, dgst digest.Digest,
 		return distribution.Descriptor{}, err
 	}
 
+	defer remoteReader.Close()
+
 	_, err = io.CopyN(writer, remoteReader, desc.Size)
 	if err != nil {
 		return distribution.Descriptor{}, err