Depending on whether the bucket name is included in the hostname in the S3 compatible request, a request to check the existence of an object, object version, or folder has either of these formats:
•With the bucket name included in the hostname:
HEAD /(object-name[?versionId=version-id])|(folder-name(/|%2F)) HTTP/1.1
•With the bucket name following the hostname:
HEAD /bucket-name/(object-name[?versionId=version-id])|(folder-name(/|%2F)) HTTP/1.1
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