GET / HTTP/1.1
Host:example.amazonaws.com
My-Header1:value2
My-Header1:value2
My-Header1:value1
X-Amz-Date:20150830T123600Z
Authorization: AWS4-HMAC-SHA256 Credential=AKIDEXAMPLE/20150830/us-east-1/service/aws4_request, SignedHeaders=host;my-header1;x-amz-date, Signature=c9d5ea9f3f72853aea855b47ea873832890dbdd183b4468f858259531a5138ea