Header Name | Description | Type |
Content-Length | The length (in bytes) of the HTTP response content as defined in RFC 2616. | string |
Content-Type | The content type (MIME) of the HTTP response as defined in RFC 2616. | string |
Connection | Defined in RFC 2616, it indicates whether to close the network connection after the response is completed. Enumeration values: keep-alive, close. | enum |
Date | The server response time in GMT format as defined in RFC 1123, for example, Wed, 29 May 2019 04:10:12 GMT. | string |
ETag | ETag, short for Entity Tag, is an informational tag that identifies the content of an object when it is created and can be used to check whether the object's content has changed. Its format is "<etag_value>", enclosed in double quotes with an ASCII string in between, for example, "8e0b617ca298a564c3331da28dcb50df". This header does not necessarily return the MD5 value of the object; it varies depending on the object's upload and encryption methods. If you need to verify the consistency between a file uploaded to the cloud and the local file, we recommend using the CRC64 code in the x-cos-hash-crc64ecma header for verification. | string |
Last-Modified | The time of the object's most recent upload, for example, Fri, 10 Apr 2020 18:17:25 GMT. | string |
Server | The name of the server that receives requests and returns responses. Default value: tencent-cos. | string |
Transfer-Encoding | The transfer encoding format as defined in RFC 2616. | string |
x-cos-hash-crc64ecma | integer | |
x-cos-request-id | The server automatically generates an ID for each request when it is sent. | string |
x-cos-trace-id | When a request fails, the server automatically generates an ID for the error. This header is included in the response only when a request fails. | string |
Header Name | Description | Type |
x-cos-server-side-encryption | When SSE-COS is used during object upload or objects encrypted with SSE-COS are downloaded, responses to the request carry this header, indicating that the SSE algorithm is used during object upload. | string |
Header Name | Description | Type |
x-cos-server-side-encryption | When SSE-KMS is used during object upload or objects encrypted with SSE-KMS are downloaded, responses to the request carry this header, indicating that the SSE algorithm is used during object upload. | string |
x-cos-server-side-encryption-cos-kms-key-id | The customer master key (CMK) of the Key Management Service (KMS) is returned. If it is not specified, the CMK created by COS by default is returned. | string |
Header Name | Description | Type |
x-cos-server-side-encryption-customer-algorithm | When SSE-C is used during object upload or objects encrypted with SSE-C are downloaded, responses to the request carry this header, indicating that the SSE algorithm is used during object upload. | string |
x-cos-server-side-encryption-customer-key-MD5 | Base64-encoded MD5 hash value of the SSE key used during object upload. For example, U5L61r7jcwdNvT7frmUG8g==. | string |
Was this page helpful?
You can also Contact sales or Submit a Ticket for help.
Help us improve! Rate your documentation experience in 5 mins.
Feedback