How to transfer a payload to S3 in a single chunk

[mateusz-bartosiak]

According to aws docs there are two ways of transfering the payload:

• In multiple chunks (which sets 'x-amz-content-sha256' header to 'STREAMING-AWS4-HMAC-SHA256-PAYLOAD')
• In single chunk (which sets 'x-amz-content-sha256' header to either the payload checksum or to 'UNSIGNED-PAYLOAD')

I want to send a payload in a single chunk with a checksum, but the default for the library seems to be sending in multiple chunks. Is there a way to change that behavior?

[mateusz-bartosiak]

Having done some research I have found a solution.

In

Services\S3\Custom\_bcl+coreclr+pcl\Transfer\Internal\SimpleUploadCommand.cs:54
AWSSDK.S3.dll!Amazon.S3.Transfer.Internal.SimpleUploadCommand.ConstructRequest() Line 54 

I had to set: putRequest.UseChunkEncoding = false;

Is there a way to make this configurable for clients of the library?

[normj]

You would need to the AmazonS3Client directly and call PutObject instead of using the TransferUtility which doesn't currently expose this property.