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localstack-bot avatar localstack-bot commented on May 23, 2024

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bentsku avatar bentsku commented on May 23, 2024

Hello @TheBlueSky and thanks a lot for your report!

In order to investigate this issue further, could you please start LocalStack with LS_LOG=trace, run the sample and share the logs here? We will have more informations about the region and the requests. Thank you!

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TheBlueSky avatar TheBlueSky commented on May 23, 2024

Hi @bentsku,

I need started LocalStack without -d flag, and here is what it logged to the terminal:

2024-03-15T11:46:40.276 DEBUG --- [   asgi_gw_0] rolo.gateway.wsgi          : POST localhost:4566/
2024-03-15T11:46:40.279 DEBUG --- [   asgi_gw_0] l.aws.protocol.serializer  : No accept header given. Using request's Content-Type (application/x-www-form-urlencoded; charset=utf-8) as preferred response Content-Type.
2024-03-15T11:46:40.279  INFO --- [   asgi_gw_0] localstack.request.aws     : AWS sns.CreateTopic => 200; 000000000000/us-east-1; CreateTopicInput({'Name': 'another-test-topic'}, headers={'User-Agent': 'aws-sdk-dotnet-coreclr/3.7.301.4 ua/2.0 os/windows#10.0.19045.0 md/ARCH#X64 lang/.NET_Core#6.0.28 md/aws-sdk-dotnet-core#3.7.302.17 api/SNS#3.7.301.4 cfg/retry-mode#legacy md/ClientAsync', 'amz-sdk-invocation-id': '3878e8b1-42ad-4932-bbc8-2d40422f8120', 'amz-sdk-request': 'attempt=1; max=5', 'Host': 'localhost:4566', 'X-Amz-Date': '20240315T114638Z', 'X-Amz-Content-SHA256': '90ac42740a33d8b8b2371ba9384a4762369644160721e0df6057f02d7965dce6', 'Authorization': 'AWS4-HMAC-SHA256 Credential=test/20240315/us-east-1/sns/aws4_request, SignedHeaders=content-type;host;user-agent;x-amz-content-sha256;x-amz-date, Signature=566b7528c30387fc48ba99d10d0214cebdeb100735d12c8dde7d2743dcaa8784', 'Content-Length': '61', 'Content-Type': 'application/x-www-form-urlencoded; charset=utf-8', 'x-moto-account-id': '000000000000'}); CreateTopicResponse({'TopicArn': 'arn:aws:sns:us-east-1:000000000000:another-test-topic'}, headers={'Content-Type': 'text/xml', 'Content-Length': '340'})
2024-03-15T11:46:41.285 DEBUG --- [   asgi_gw_0] rolo.gateway.wsgi          : GET localhost.localstack.cloud:4566/_localstack/health
2024-03-15T11:46:42.363 DEBUG --- [   asgi_gw_0] rolo.gateway.wsgi          : POST localhost:4566/
2024-03-15T11:46:42.365 DEBUG --- [   asgi_gw_0] l.aws.protocol.serializer  : No accept header given. Using request's Content-Type (application/x-www-form-urlencoded; charset=utf-8) as preferred response Content-Type.
2024-03-15T11:46:42.366  INFO --- [   asgi_gw_0] localstack.request.aws     : AWS sns.Publish => 400 (InvalidParameter); 000000000000/us-east-1; PublishInput({'TopicArn': 'arn:aws:sns:eu-west-1:000000000000:one-test-topic', 'Message': 'Hello from .NET!'}, headers={'User-Agent': 'aws-sdk-dotnet-coreclr/3.7.301.4 ua/2.0 os/windows#10.0.19045.0 md/ARCH#X64 lang/.NET_Core#6.0.28 md/aws-sdk-dotnet-core#3.7.302.17 api/SNS#3.7.301.4 cfg/retry-mode#legacy md/ClientAsync', 'amz-sdk-invocation-id': 'a2ffda71-30fc-4628-88ea-38e2bda6d6ad', 'amz-sdk-request': 'attempt=1; max=5', 'Host': 'localhost:4566', 'X-Amz-Date': '20240315T114640Z', 'X-Amz-Content-SHA256': 'f6520d733a5843b386707fdb056bf40eb44beb32271240c1a814d45c39f555ab', 'Authorization': 'AWS4-HMAC-SHA256 Credential=test/20240315/us-east-1/sns/aws4_request, SignedHeaders=content-type;host;user-agent;x-amz-content-sha256;x-amz-date, Signature=417e39311133c28e5fc137178e810eda0a0ccb9020e652ae56334d9f920ca235', 'Content-Length': '133', 'Content-Type': 'application/x-www-form-urlencoded; charset=utf-8', 'x-moto-account-id': '000000000000'}); InvalidParameter(Invalid parameter: TopicArn, headers={'Content-Type': 'text/xml', 'Content-Length': '287'})

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bentsku avatar bentsku commented on May 23, 2024

Hello @TheBlueSky, sorry for the delay on this one.

Looking at your logs, it seems your SDK is not properly setting the region here.
Here's the content of your credentials in your Authorization header: Credential=test/20240315/us-east-1/sns/aws4_request. As you can see, the region there is set to us-east-1, which is why the request is directed to that region.

I'm not exactly sure why that is, and why it works against AWS and not LocalStack? But LocalStack won't be able to target the correct region if the header sent is wrong.
Looking at our documentation for .NET SDK, it seems the way to set up the region should be a bit different:
https://docs.localstack.cloud/user-guide/integrations/sdks/dotnet/

I believe setting the region endpoint while targeting AWS will automatically set up your authentication region. But as you override the ServiceURL to another, the automated region detection might not work?

I think this is related to the AuthenticationRegion in the config.
Maybe doing the following would solve it?

var options = new AWSOptions
{
    Credentials = new BasicAWSCredentials("test", "test"),
    Region = Amazon.RegionEndpoint.EUWest1,
};
options.DefaultClientConfig.ServiceURL = "http://localhost:4566";
options.DefaultClientConfig.AuthenticationRegion = "eu-west-1";

Tell me if that does solve the issue for you? Thanks!

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TheBlueSky avatar TheBlueSky commented on May 23, 2024

Hi @bentsku,

sorry for the delay on this one.

No worries. I appreciate the time and effort that you put into this.

Tell me if that does solve the issue for you?

Yes, setting options.DefaultClientConfig.AuthenticationRegion = "eu-west-1"; solved the issue. Thank you for that, and many thanks for the link to the .NET specific documentation... I did not know it existed😅

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