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Common Response Headers
The following table describes response headers that are common to most AWS S3 responses.
| Name | Description |
|---|---|
Content-Length |
The length in bytes of the body in the response. Type: String Default: None |
Connection |
specifies whether the connection to the server is open or closed. Type: Enum Valid Values: open | close Default: None |
Date |
The date and time Amazon S3 responded, for example, Wed, 01 Mar 2009 12:00:00 GMT. Type: String Default: None |
ETag |
The entity tag is a hash of the object. The ETag only reflects changes to the contents of an object, not its metadata. The ETag is determined when an object is created. For objects created by the PUT Object operation and the POST Object operation, the ETag is a quoted, 32-digit hexadecimal string representing the MD5 digest of the object data. For other objects, the ETag may or may not be an MD5 digest of the object data. If the ETag is not an MD5 digest of the object data, it will contain one or more non-hexadecimal characters and/or will consist of less than 32 or more than 32 hexadecimal digits. Type: String |
Server |
The name of the server that created the response. Type: String Default: AmazonS3 |
x-amz-delete-marker |
Specifies whether the object returned was (true) or was not (false) a Delete Marker. Type: Boolean Valid Values: true | false Default: false |
x-amz-id-2 |
A special token that helps AWS troubleshoot problems. Type: String Default: None |
x-amz-request-id |
A value created by Amazon S3 that uniquely identifies the request. In the unlikely event that you have problems with Amazon S3, AWS can use this value to troubleshoot the problem. Type: String Default: None |
x-amz-version-id |
The version of the object. When you enable versioning, Amazon S3
generates a random number for objects added to a bucket. The value is
UTF-8 encoded and URL ready. When you PUT an object in a bucket where
versioning has been suspended, the version ID is always
Type: String Valid Values: null | any URL-ready, UTF-8 encoded string Default: null |
