upload_file ExtraArgs={"ChecksumAlgorithm": "sha256"} Error

[Fibley-C]

Describe the bug

When running s3.upload_file(file_path, bucket, key, ExtraArgs={"ChecksumAlgorithm": "sha256"}) to upload a file to Wasabi S3.

I receive the following error

An error occurred (IncompleteBody) when calling the PutObject operation: You did not provide the number of bytes specified by the Content-Length HTTP header

Running s3.upload_file(file_path, bucket, key) executes fine

Versions Installed:
Python 3.12.2
boto3 1.34.87
botocore 1.34.87

Expected Behavior

upload_file would succeed and the file would be uploaded with a SHA256 checksum

Current Behavior

An error occurred (IncompleteBody) when calling the PutObject operation: You did not provide the number of bytes specified by the Content-Length HTTP header

Is produced

Reproduction Steps

Attempt to run

s3.upload_file(file_path, bucket, key, ExtraArgs={"ChecksumAlgorithm": "sha256"})

On a S3 compatible vendor such as Wasabi

Possible Solution

N/A

Additional Information/Context

No response

SDK version used

1.34.87

Environment details (OS name and version, etc.)

Windows Server 2022

[tim-finnigan]

Hi @Fibley-C thanks for reaching out. This is likely an issue with how Wasabi handles the upload. Unfortunately we cannot guarantee support with any third-party integrations - I reaching out to them to report this issue, probably here: https://wasabi.com/help/.

The IncompleteBody error is coming from the S3 API response: https://docs.aws.amazon.com/AmazonS3/latest/API/ErrorResponses.html. And the ChecksumAlgorithm is a valid parameter for ExtraArgs as documented here. If you believe this is a Boto3 issue then please provide a code snippet to reproduce the issue, as well as logs (with sensitive info redacted) by adding boto3.set_stream_logger('') to your script for us to investigate further.

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