Demonstration of AWS credentials timeout issue (https://github.com/aws/aws-sdk-go/issues/2392)

aws_credentials_timeout.go

package main

import (
	"fmt"
	"io/ioutil"
	"log"

	"github.com/aws/aws-sdk-go/aws"
	"github.com/aws/aws-sdk-go/aws/session"
	"github.com/aws/aws-sdk-go/service/s3"
	"github.com/aws/aws-sdk-go/service/s3/s3manager"
)

func main() {
	s3Config := aws.Config{
		Endpoint: aws.String("http://127.0.0.1:9000/"),
		Region: aws.String("us-west-2"),
		S3ForcePathStyle: aws.Bool(true),
		CredentialsChainVerboseErrors: aws.Bool(true),
	}
	s3Opts := session.Options{
		Config:            s3Config,
		SharedConfigState: session.SharedConfigEnable,
	}
	sess, err := session.NewSessionWithOptions(s3Opts)
	if err != nil {
		log.Fatalln(err)
	}

	outfile, err := ioutil.TempFile("", "myfile")
	if err != nil {
		log.Fatalln(err)
	}

	downloader := s3manager.NewDownloader(sess)
	bytesDownloaded, err := downloader.Download(outfile, &s3.GetObjectInput{
		Bucket: aws.String("mybucket"),
		Key:    aws.String("mykey"),
	})
	if err != nil {
		log.Fatalln(err)
	}

	fmt.Printf("Downloaded %d bytes to tempfile: %v\n", bytesDownloaded, outfile.Name())
}