S3 DeleteObjects fails due to unsupported header x-amz-checksum-crc32

[LorenzoVaralo]

The Content-MD5 request header is required for all Multi-Object Delete requests, but using s3proxy 3.0.0 the command fails because x-amz-checksum-crc32 is not supported:

[s3proxy] E 01-21 21:58:25.952 S3Proxy-Jetty-36 o.gaul.s3proxy.S3ProxyHandler:527 |::] Unknown header x-amz-checksum-crc32 with URI /testbucket/

Changing the client configuration to use checksum only when required, did NOT fix the issue, because for the DeleteObjects command, they are always necessary:

            .request_checksum_calculation(
                aws_sdk_s3::config::RequestChecksumCalculation::WhenRequired,
            )
            .response_checksum_validation(
                aws_sdk_s3::config::ResponseChecksumValidation::WhenRequired,
            )

A workaround is creating an interceptor that will remove the x-amz-checksum-crc32 header from requests.

[LorenzoVaralo]

This is the workaround:

        let config = aws_sdk_s3::config::Builder::from(&shared_config)
            .region(region)
            .endpoint_url(&url.endpoint)
            .force_path_style(true)
            .interceptor(RemoveCrc32Header) // <- Include this
            .build();
        let client = Client::from_conf(config);

#[derive(Debug)]
pub struct RemoveCrc32Header;

impl Intercept for RemoveCrc32Header {
    fn name(&self) -> &'static str {
        "RemoveCrc32Header"
    }
    fn modify_before_transmit(
        &self,
        context: &mut BeforeTransmitInterceptorContextMut<'_>,
        runtime_components: &RuntimeComponents,
        _cfg: &mut ConfigBag,
    ) -> Result<(), BoxError> {
        let headers = context.request_mut().headers_mut();
        headers.remove("x-amz-sdk-checksum-algorithm");
        Ok(())
    }
}

[thomasturrell]

Related to #942?

[trduc79]

Hi there,
Any chance we will have fix for this crc32 header?