Common Response Headers

The following table describes response headers that are common to most API responses.

Name	Description
Content-Length	The length in bytes of the response body. Type: String
Date	The date and time Amazon S3 Glacier (S3 Glacier) responded, for example, Wed, 10 Feb 2017 12:00:00 GMT. The format of the date must be one of the full date formats specified by RFC 2616, section 3.3. Note that Date returned may drift slightly from other dates, so for example, the date returned from an Upload Archive (POST archive) request may not match the date shown for the archive in an inventory list for the vault. Type: String
x-amzn-RequestId	A value created by S3 Glacier that uniquely identifies your request. In the event that you have a problem with S3 Glacier, AWS can use this value to troubleshoot the problem. It is recommended that you log these values. Type: String
x-amz-sha256-tree-hash​	The SHA256 tree-hash checksum of the archive or inventory body. For more information about calculating this checksum, see Computing Checksums. Type: String