POST / http/1.1
DATE:Mon, 09 Sep 2011 23:36:00 GMT
host:host.foo.com
p: phfft 
Authorization: AWS4-HMAC-SHA256 Credential=AKIDEXAMPLE/20110909/us-east-1/host/aws4_request, SignedHeaders=date;host;p, Signature=debf546796015d6f6ded8626f5ce98597c33b47b9164cf6b17b4642036fcb592

