GET // http/1.1 Date:Mon, 09 Sep 2011 23:36:00 GMT Host:host.foo.com Authorization: AWS4-HMAC-SHA256 Credential=AKIDEXAMPLE/20110909/us-east-1/host/aws4_request, SignedHeaders=date;host, Signature=b27ccfbfa7df52a200ff74193ca6e32d4b48b8856fab7ebf1c595d0670a7e470