GET
/

host:example.amazonaws.com
my-header1:value4,value1,value3,value2
x-amz-date:20150830T123600Z
x-amz-region-set:us-east-1

host;my-header1;x-amz-date;x-amz-region-set
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855