Uploading stream to S3 invoke error "The request body terminated unexpectedly"

[digitlegacy]

Describe the bug

Simple upload of stream as follow:
var request = new PutObjectRequest { BucketName = _bucketName, Key = path, InputStream = stream };

It all worked in AWSSDK.S3 version 3.7.411.7 but since version 3.7.412 I keep getting exception with error code 'IncompleteBody':

Amazon.S3.AmazonS3Exception: The request body terminated unexpectedly
---> Amazon.Runtime.Internal.HttpErrorResponseException: Exception of type 'Amazon.Runtime.Internal.HttpErrorResponseException' was thrown.
at Amazon.Runtime.HttpWebRequestMessage.ProcessHttpResponseMessage(HttpResponseMessage responseMessage)
at Amazon.Runtime.HttpWebRequestMessage.GetResponseAsync(CancellationToken cancellationToken)
at Amazon.Runtime.Internal.HttpHandler1.InvokeAsync[T](IExecutionContext executionContext) at Amazon.Runtime.Internal.RedirectHandler.InvokeAsync[T](IExecutionContext executionContext) at Amazon.Runtime.Internal.Unmarshaller.InvokeAsync[T](IExecutionContext executionContext) at Amazon.S3.Internal.AmazonS3ResponseHandler.InvokeAsync[T](IExecutionContext executionContext) at Amazon.Runtime.Internal.ErrorHandler.InvokeAsync[T](IExecutionContext executionContext) --- End of inner exception stack trace --- at Amazon.Runtime.Internal.HttpErrorResponseExceptionHandler.HandleExceptionStream(IRequestContext requestContext, IWebResponseData httpErrorResponse, HttpErrorResponseException exception, Stream responseStream) at Amazon.Runtime.Internal.HttpErrorResponseExceptionHandler.HandleExceptionAsync(IExecutionContext executionContext, HttpErrorResponseException exception) at Amazon.Runtime.Internal.ExceptionHandler1.HandleAsync(IExecutionContext executionContext, Exception exception)
at Amazon.Runtime.Internal.ErrorHandler.ProcessExceptionAsync(IExecutionContext executionContext, Exception exception)
at Amazon.Runtime.Internal.ErrorHandler.InvokeAsync[T](IExecutionContext executionContext)
at Amazon.Runtime.Internal.CallbackHandler.InvokeAsync[T](IExecutionContext executionContext)
at Amazon.Runtime.Internal.Signer.InvokeAsync[T](IExecutionContext executionContext)
at Amazon.S3.Internal.S3Express.S3ExpressPreSigner.InvokeAsync[T](IExecutionContext executionContext)
at Amazon.Runtime.Internal.EndpointDiscoveryHandler.InvokeAsync[T](IExecutionContext executionContext)
at Amazon.Runtime.Internal.EndpointDiscoveryHandler.InvokeAsync[T](IExecutionContext executionContext)
at Amazon.Runtime.Internal.CredentialsRetriever.InvokeAsync[T](IExecutionContext executionContext)
at Amazon.Runtime.Internal.RetryHandler.InvokeAsync[T](IExecutionContext executionContext)
at Amazon.Runtime.Internal.RetryHandler.InvokeAsync[T](IExecutionContext executionContext)
at Amazon.Runtime.Internal.CallbackHandler.InvokeAsync[T](IExecutionContext executionContext)
at Amazon.Runtime.Internal.CallbackHandler.InvokeAsync[T](IExecutionContext executionContext)
at Amazon.S3.Internal.AmazonS3ExceptionHandler.InvokeAsync[T](IExecutionContext executionContext)
at Amazon.Runtime.Internal.ErrorCallbackHandler.InvokeAsync[T](IExecutionContext executionContext)
at Amazon.Runtime.Internal.MetricsHandler.InvokeAsync[T](IExecutionContext executionContext)
at DigitalLegacy.Infrastructure.S3.S3FileStorage.UploadFile(String absolutePath, Stream fileStream)

Regression Issue

• Select this option if this issue appears to be a regression.

Expected Behavior

The stream should have been uploaded to S3

Current Behavior

I get exceptions indicating the stream was closed before finished uploading

Reproduction Steps

Just try to upload a stream using PutObjectRequest

var request = new PutObjectRequest { BucketName = _bucketName, Key = path, InputStream = stream };

Possible Solution

No response

Additional Information/Context

No response

AWS .NET SDK and/or Package version used

AWSSDK.S3 3.7.412

Targeted .NET Platform

.NET 9

Operating System and version

Windows

[dscpinheiro]

Are you using S3 or a 3rd-party implementation? We made a change last week so that the SDK automatically calculates checksums for all PutObject calls: #3610 (here's a similar report from yesterday - where they were using MinIO: #3615)

If this is happening with S3, we'd need more details (what region, what does your input stream look like, etc...)

[mhehle]

Can confirm this error with multiple different 3rd-party implementations like hetzner and openstack.
Last working version 3.7.411.7

[dscpinheiro]

Got it, thanks for confirming it's happening for 3rd-party implementations. As mentioned in the announcement I linked earlier, this is a change we made intentionally and there's a config option you can set to disable the checksum calculation for PutObject / UploadPart calls:

var s3Config = new AmazonS3Config
{
    ServiceURL = "your-custom-service-url",
    RequestChecksumCalculation = RequestChecksumCalculation.WHEN_REQUIRED,
};
var s3 = new AmazonS3Client(s3Config);
await s3.PutObjectAsync(...);

This should unblock you, although obviously the ideal solution would be for the 3rd-party implementations to support this new behavior as it's in place for all AWS SDKs - not only .NET (this documentation page from S3 explains how the data integrity works: https://docs.aws.amazon.com/AmazonS3/latest/userguide/checking-object-integrity.html)

[mhehle]

@dscpinheiro thank you for your fast response.
Your suggested configuration change works!