Imports github.com/aws/aws-sdk-go/aws github.com/aws/aws-sdk-go/aws/client/metadata github.com/aws/aws-sdk-go/aws/credentials github.com/aws/aws-sdk-go/aws/request github.com/aws/aws-sdk-go/aws/signer/v4 Standard library imports bytes io/ioutil log net net/http net/http/httputil net/url time