S3 PUT Copy fails with go 1.8

[leelynne]

The aws sdk doesn't add Content-Length to the S3 Copy request with go 1.8rc2 and instead the request ends up with Transfer-Encoding: chunked. Debug outputs are below.
Code is a simple copy object command.

	r := &s3.CopyObjectInput{
		Bucket:      &mybucket,
		CopySource:  &src,
		Key: aws.String(destKey),
	}
	_, err := s3serv.CopyObject(r)

With go 1.7:

2017/01/25 21:10:06 DEBUG: Request s3/CopyObject Details:
---[ REQUEST POST-SIGN ]-----------------------------
PUT http://mybucket/data.tar.gz HTTP/1.1
Host: mybucket.s3-us-west-2.amazonaws.com
User-Agent: aws-sdk-go/1.5.1 (go1.7.4; linux; amd64)
Content-Length: 0
Authorization:
X-Amz-Content-Sha256: e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
X-Amz-Copy-Source: mybucket/other-location.tar.gz
X-Amz-Copy-Source-If-Unmodified-Since: Mon, 1 Jan 0001 00:00:00 GMT
X-Amz-Date: 20170126T051006Z
Accept-Encoding: gzip

---

2017/01/25 21:10:06 DEBUG: Response s3/CopyObject Details:
---[ RESPONSE ]--------------------------------------
HTTP/1.1 200 OK
Content-Length: 234
Content-Type: application/xml
Date: Thu, 26 Jan 2017 05:10:07 GMT
Server: AmazonS3
X-Amz-Copy-Source-Version-Id: C_UCKAsstrExUE8hKljK5D9N4M6UXiX2
X-Amz-Id-2: Z78nqBvr1zM984vtwumQc37iY8JCGMggVd9qBxFjWyTAzL4aU/XOM9H2NEB24E0sODbj64mK/6Q=
X-Amz-Request-Id: 148EBBAD670CC82B
X-Amz-Version-Id: 1q4Ul_wDggg0vCWRWUay5uKFN_NI1bbK

With Go 1.8rc2:

---

2017/01/25 21:48:00 DEBUG: Request s3/CopyObject Details:
---[ REQUEST POST-SIGN ]-----------------------------
PUT http://mybucket/data.tar.gz HTTP/1.1
Host: mybucket.s3-us-west-2.amazonaws.com
User-Agent: aws-sdk-go/1.5.1 (go1.8rc2; linux; amd64)
Transfer-Encoding: chunked
Authorization:
X-Amz-Content-Sha256: e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
X-Amz-Copy-Source: mybucket/other-location.tar.gz
X-Amz-Copy-Source-If-Unmodified-Since: Mon, 1 Jan 0001 00:00:00 GMT
X-Amz-Date: 20170126T054800Z
Accept-Encoding: gzip

0

---

2017/01/25 21:48:00 DEBUG: Response s3/CopyObject Details:
---[ RESPONSE ]--------------------------------------
HTTP/1.1 501 Not Implemented
Connection: close
Transfer-Encoding: chunked
Content-Type: application/xml
Date: Thu, 26 Jan 2017 05:48:00 GMT
Server: AmazonS3
X-Amz-Id-2: PmFzE/jxEVlQl2n99ICLen8XEfRxReghKAGxCu9igla2relsdftkO1jEdvt9/2cv2mfixRipV1E=
X-Amz-Request-Id: 3349C414B772F2C0

126
<Error><Code>NotImplemented</Code><Message>A header you provided implies functionality that is not implemented</Message><Header>Transfer-Encoding</Header><RequestId>3349C414B772F2C0</RequestId><HostId>PmFzE/jxEVlQl2n99ICLen8XEfRxReghKAGxCu9igla2relsdftkO1jEdvt9/2cv2mfixRipV1E=</HostId></Error>
0

[xibz]

Hello @leelynne, thank you for reaching out to us. We've addressed this issue in the later versions of the SDK, #991. Can you update and see if that fixes the problem?

[leelynne]

Ugh, my apologies. I thought I was on the latest version but actually had it locked on 1.5.1. All good. Thanks!

[xibz]

@leelynne no worries. If you run into any other issues, please let us know!