}

	currTime := UTCNow()
	signature, err := signStreamingRequest(req, accessKey, secretKey, currTime)
	if err != nil {
		return nil, err
	}

	// skew the time between the chunk signature calculation and seed signature.
	currTime = currTime.Add(1 * time.Second)
	req, err = assembleStreamingChunks(req, body, chunkSize, secretKey, signature, currTime)
	return req, err
}