POST / 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=22902d79e148b64e7571c3565769328423fe276eae4b26f83afceda9e767f726

