AWSSDK.SimpleEmail Throwing Error - TaskCanceledException: A task was canceled.

[naveedahmed1]

Describe the bug

I am using latest version (3.7.1.127) of AWSSDK.SimpleEmailV2.

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;
            request.Reasons = new List<string> { "COMPLAINT" };

            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)

Expected Behavior

It should return the request suppression list.

Current Behavior

Throwing error "A task was canceled."

Reproduction Steps

The above mentioned code can be used for reproduction in any .net core project.

Possible Solution

No response

Additional Information/Context

No response

AWS .NET SDK and/or Package version used

AWSSDK.SimpleEmailV2 -Version 3.7.1.127

Targeted .NET Platform

.Net 6

Operating System and version

Windows 11

[ashishdhingra]

@naveedahmed1 In this case, the TaskCanceledException is occurring due to unhandled exception in your code. This is returned by the .NET Task Parallel Library for any unhandled exceptions. You could try checking:

• If your credentials are configured properly (refer Credential and profile resolution)
• If the IAM role associated with the configured credentials has proper permissions to invoke the required operations on Simple Email V2 service.
• Is the request timing out?

You may also try enabling detailed verbose logging so that detailed wire logs are emitted (try adding minimal code below if using the console application):

Amazon.AWSConfigs.LoggingConfig.LogResponses = Amazon.ResponseLoggingOption.Always;
Amazon.AWSConfigs.LoggingConfig.LogTo = Amazon.LoggingOptions.SystemDiagnostics;
Amazon.AWSConfigs.AddTraceListener("Amazon", new System.Diagnostics.ConsoleTraceListener());

Thanks,
Ashish

[naveedahmed1]

I was using awsConfig.DefaultClientConfig.UseHttp = true; which was causing the issue. Removing it fixed the issue and everything seems to be working perfectly now. Thanks

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