Cross-region defaults mode behavior

[opiuman]

Hi

I have a single SNS client created in one region with the defaults mode set as cross-region. It looks like this SNS client (sample code provided below) is NOT able to publish the message to the SNS topic in another region. So, what does cross-region default mode do exactly?

cfg, _ := config.LoadDefaultConfig(context.Background(),
	config.WithRegion("us-east-1"))
cfg.DefaultsMode = aws.DefaultsModeCrossRegion
snsClient := sns.NewFromConfig(cfg)
snsClient.Publish(context.Background(), &sns.PublishInput{
	Message:  aws.String("test"),
	TopicArn: aws.String("arn:aws:sns:us-west-2:xxxxx:test"),
})

Thanks,
Wilson

[jasdel]

Thanks for reaching out @opiuman the cross-region mode configures the SDK's defaults with regard to timeouts and similar options. From your example it looks like you're trying to send to a queue in the us-west-2 region, with the client configured for the us-east-1 region. The best way to do this is to configure the client for the region the resources is in. us-west-2 in this case.

[github-actions[bot]]

Hello! Reopening this discussion to make it searchable.