GET /./example HTTP/1.1
Host:example.amazonaws.com
X-Amz-Date:20150830T123600Z
Authorization:AWS4-HMAC-SHA256 Credential=AKIDEXAMPLE/20150830/us-east-1/service/aws4_request, SignedHeaders=host;x-amz-date, Signature=beb03f223f7deae4146464f06e29eebbee9c8afbe15c290cf07aa8b119e14cff

