From cfc631fd9c0db16d80275ec75979d9de87ae7bbd Mon Sep 17 00:00:00 2001
From: Jacob Wen <jian.w.wen@oracle.com>
Date: Fri, 14 Jul 2017 15:25:27 +0800
Subject: [PATCH] Handle https proxy's CONNECT response

When using a https proxy, an extra HTTP 200 header will be generated.
So we can't rely on detecting the first http header.

$curlHeaders with https proxy:
"HTTP/1.0 200 Connection established  <-- the https proxy's response

HTTP/1.1 307 Temporary Redirect
...
"

See https://stackoverflow.com/a/34537988/889429

Fixes #34131

Signed-off-by: Jacob Wen <jian.w.wen@oracle.com>
Upstream-commit: 238d17c456c3ff0b8937b33538f6a4b36f829410
Component: engine
---
 components/engine/contrib/download-frozen-image-v2.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/components/engine/contrib/download-frozen-image-v2.sh b/components/engine/contrib/download-frozen-image-v2.sh
index 232679019d..2dfe247b5a 100755
--- a/components/engine/contrib/download-frozen-image-v2.sh
+++ b/components/engine/contrib/download-frozen-image-v2.sh
@@ -64,7 +64,7 @@ fetch_blob() {
 			-D-
 	)"
 	curlHeaders="$(echo "$curlHeaders" | tr -d '\r')"
-	if [ "$(echo "$curlHeaders" | awk 'NR == 1 { print $2; exit }')" != '200' ]; then
+	if echo "$curlHeaders" | grep -qE "^HTTP/[0-9].[0-9] 3"; then
 		rm -f "$targetFile"
 
 		local blobRedirect="$(echo "$curlHeaders" | awk -F ': ' 'tolower($1) == "location" { print $2; exit }')"