OptionalTemporaryOptionalTransitionTransition metadata (IBM COS).
OptionalRetentionThe number of legal holds applied to the object.
This header is returned only when the object has an active legal hold.
OptionalBodyObject data.
OptionalDeleteIndicates whether the object retrieved was (true) or was not (false) a Delete Marker. If false, this response header does not appear in the response.
If the current version of the object is a delete marker, Amazon S3 behaves as if the object was
deleted and includes x-amz-delete-marker: true in the response.
If the specified version in the request is a delete marker, the response returns a 405
Method Not Allowed error and the Last-Modified: timestamp response
header.
OptionalAcceptIndicates that a range of bytes was specified in the request.
OptionalExpirationIf the object expiration is configured (see
PutBucketLifecycleConfiguration
), the response includes this header. It
includes the expiry-date and rule-id key-value pairs providing object
expiration information. The value of the rule-id is URL-encoded.
Object expiration information is not returned in directory buckets and this header returns the
value "NotImplemented" in all responses for directory buckets.
OptionalRestoreProvides information about object restoration action and expiration time of the restored object copy.
This functionality is not supported for directory buckets. Directory buckets only support EXPRESS_ONEZONE (the S3 Express One Zone storage class) in Availability Zones and ONEZONE_IA (the S3 One Zone-Infrequent Access storage class) in Dedicated Local Zones.
OptionalLastDate and time when the object was last modified.
General purpose buckets - When you specify a
versionId of the object in your request, if the specified version in the request is a
delete marker, the response returns a 405 Method Not Allowed error and the
Last-Modified: timestamp response header.
OptionalContentSize of the body in bytes.
OptionalEAn entity tag (ETag) is an opaque identifier assigned by a web server to a specific version of a resource found at a URL.
OptionalChecksumThe Base64 encoded, 32-bit CRC32 checksum of the object. This checksum is only present if the object was uploaded
with the object. For more information, see
Checking object integrity in the Amazon S3 User Guide.
OptionalChecksumThe Base64 encoded, 32-bit CRC32C checksum of the object. This checksum is only present if the checksum was uploaded
with the object. For more information, see
Checking object integrity in the Amazon S3 User Guide.
OptionalChecksumThe Base64 encoded, 64-bit CRC64NVME checksum of the object. For more information, see
Checking
object integrity in the Amazon S3 User Guide.
OptionalChecksumThe Base64 encoded, 160-bit SHA1 digest of the object. This checksum is only present if the checksum was uploaded
with the object. For more information, see
Checking object integrity in the Amazon S3 User Guide.
OptionalChecksumThe Base64 encoded, 256-bit SHA256 digest of the object. This checksum is only present if the checksum was uploaded
with the object. For more information, see
Checking object integrity in the Amazon S3 User Guide.
OptionalChecksumThe checksum type, which determines how part-level checksums are combined to create an object-level
checksum for multipart objects. You can use this header response to verify that the checksum type that
is received is the same checksum type that was specified in the CreateMultipartUpload
request. For more information, see Checking object integrity in
the Amazon S3 User Guide.
OptionalMissingThis is set to the number of metadata entries not returned in the headers that are prefixed with
x-amz-meta-. This can happen if you create metadata using an API like SOAP that supports
more flexible metadata than the REST API. For example, using SOAP, you can create metadata whose values
are not legal HTTP headers.
This functionality is not supported for directory buckets.
OptionalVersionVersion ID of the object.
This functionality is not supported for directory buckets.
OptionalCacheSpecifies caching behavior along the request/reply chain.
OptionalContentSpecifies presentational information for the object.
OptionalContentIndicates what content encodings have been applied to the object and thus what decoding mechanisms must be applied to obtain the media-type referenced by the Content-Type header field.
OptionalContentThe language the content is in.
OptionalContentThe portion of the object returned in the response.
OptionalContentA standard MIME type describing the format of the object data.
OptionalExpiresThe date and time at which the object is no longer cacheable.
OptionalWebsiteIf the bucket is configured as a website, redirects requests for this object to another object in the same bucket or to an external URL. Amazon S3 stores the value of this header in the object metadata.
This functionality is not supported for directory buckets.
OptionalServerThe server-side encryption algorithm used when you store this object in Amazon S3 or Amazon FSx.
When accessing data stored in Amazon FSx file systems using S3 access points, the only valid server side
encryption option is aws:fsx.
OptionalMetadataA map of metadata to store with the object in S3.
OptionalSSEIf server-side encryption with a customer-provided encryption key was requested, the response will include this header to confirm the encryption algorithm that's used.
This functionality is not supported for directory buckets.
OptionalSSEIf server-side encryption with a customer-provided encryption key was requested, the response will include this header to provide the round-trip message integrity verification of the customer-provided encryption key.
This functionality is not supported for directory buckets.
OptionalSSEKMSIf present, indicates the ID of the KMS key that was used for object encryption.
OptionalBucketIndicates whether the object uses an S3 Bucket Key for server-side encryption with Key Management Service (KMS) keys (SSE-KMS).
OptionalStorageProvides storage class information of the object. Amazon S3 returns this header for all objects except for S3 Standard storage class objects.
Directory buckets -
Directory buckets only support EXPRESS_ONEZONE (the S3 Express One Zone storage class) in Availability Zones and ONEZONE_IA (the S3 One Zone-Infrequent Access storage class) in Dedicated Local Zones.
OptionalRequestIf present, indicates that the requester was successfully charged for the request. For more information, see Using Requester Pays buckets for storage transfers and usage in the Amazon Simple Storage Service user guide.
This functionality is not supported for directory buckets.
OptionalReplicationAmazon S3 can return this if your request involves a bucket that is either a source or destination in a replication rule.
This functionality is not supported for directory buckets.
OptionalPartsThe count of parts this object has. This value is only returned if you specify
partNumber in your request and the object was uploaded as a multipart upload.
OptionalTagThe number of tags, if any, on the object, when you have the relevant permission to read object tags.
You can use GetObjectTagging to retrieve the tag set associated with an object.
This functionality is not supported for directory buckets.
OptionalObjectThe Object Lock mode that's currently in place for this object.
This functionality is not supported for directory buckets.
OptionalObjectThe date and time when this object's Object Lock will expire.
This functionality is not supported for directory buckets.
OptionalObjectIndicates whether this object has an active legal hold. This field is only returned if you have permission to view an object's legal hold status.
This functionality is not supported for directory buckets.
Storage class of the temporary restored copy (IBM COS).