AWS .Net Core SDK Simple Email Service Suppression List Not Working - amazon-web-services

Question

I am trying to retrieve the SES account-level suppression list using AWS SDK in .Net Core:
Below is my code:
public class SimpleEmailServiceUtility : ISimpleEmailServiceUtility
{
private readonly IAmazonSimpleEmailServiceV2 _client;
public SimpleEmailServiceUtility(IAmazonSimpleEmailServiceV2 client)
{
_client = client;
}
public async Task<ListSuppressedDestinationsResponse> GetSuppressionList()
{
ListSuppressedDestinationsRequest request = new ListSuppressedDestinationsRequest();
request.PageSize = 10;
ListSuppressedDestinationsResponse response = new ListSuppressedDestinationsResponse();
try
{
response = await _client.ListSuppressedDestinationsAsync(request);
}
catch (Exception ex)
{
Console.WriteLine("ListSuppressedDestinationsAsync failed with exception: " + ex.Message);
}
return response;
}
}
But it doesn't seem to be working. The request takes too long and then returns empty response or below error if I remove try/catch:
An unhandled exception occurred while processing the request.
TaskCanceledException: A task was canceled.
System.Threading.Tasks.TaskCompletionSourceWithCancellation<T>.WaitWithCancellationAsync(CancellationToken cancellationToken)
TimeoutException: A task was canceled.
Amazon.Runtime.HttpWebRequestMessage.GetResponseAsync(CancellationToken cancellationToken)
Can anyone please guide if I am missing something?
Thank you!

Answer 1

I have tested your code and everything works correctly.
using Amazon;
using Amazon.SimpleEmailV2;
using Amazon.SimpleEmailV2.Model;
internal class Program
{
private async static Task Main(string[] args)
{
var client = new AmazonSimpleEmailServiceV2Client("accessKeyId", "secrectAccessKey", RegionEndpoint.USEast1);
var utility = new SimpleEmailServiceUtility(client);
var result = await utility.GetSuppressionList();
}
}
<PackageReference Include="AWSSDK.SimpleEmailV2" Version="3.7.1.127" />
Things that you can check:
Try again, maybe it was a temporary problem.
Try with the latest version that I am using(if not already)
How far are you from the region that you try to get the list? Try making the same request from an EC2 instance in that region.

Answer 2

Finally found the issue, I was using awsConfig.DefaultClientConfig.UseHttp = true;' in startup` which was causing the issue. Removing it fixed the issue and everything seems to be working fine now.