versionId
request parameter to get the metadata of an object of a specified version. If the version ID you specify corresponds to a delete marker, HTTP status code “404 (Not Found)” will be returned. If no version ID is specified, the metadata of the latest version will be returned.HEAD /<ObjectKey> HTTP/1.1Host: <BucketName-APPID>.cos.<Region>.myqcloud.comDate: GMT DateAuthorization: Auth String
examplebucket-1250000000
(see Bucket Overview > Basic Information and Bucket Overview > Bucket Naming Conventions), and <Region> is a COS region (see Regions and Access Endpoints).Parameter | Description | Type | Required |
versionId | Specifies the version ID of the object if versioning is enabled; if this parameter is not specified, the latest version will be queried | string | No |
Header | Description | Type | Required |
If-Modified-Since | If the object is modified after the specified time, HTTP status code 200 (OK) will be returned. Otherwise, “304 (Not Modified)” will be returned. | string | No |
If-Unmodified-Since | If the object is not modified after the specified time, HTTP status code 200 (OK) will be returned. Otherwise, “412 (Precondition Failed)” will be returned. | string | No |
If-Match | If the ETag of the object is the same as the specified value, HTTP status code 200 (OK) will be returned. Otherwise, “412 (Precondition Failed)” will be returned. | string | No |
If-None-Match | If the ETag of the object is different from the specified value, HTTP status code 200 (OK) will be returned. Otherwise, “304 (Not Modified)” will be returned. | string | No |
Header | Description | Type |
Cache-Control | Cache directives as defined in RFC 2616, which will be returned only if it is contained in the object metadata | string |
Content-Disposition | Filename as defined in RFC 2616, which will be returned only if it is contained in the object metadata | String |
Content-Encoding | Encoding format as defined in RFC 2616, which will be returned only if it is contained in the object metadata | string |
Expires | Cache expiration time as defined in RFC 2616, which will be returned only if it is contained in the object metadata | string |
x-cos-meta-* | Contains user-defined metadata and header suffixes | string |
x-cos-storage-class | Object storage class. For the enumerated values, such as INTELLIGENT_TIERING , STANDARD_IA , ARCHIVE , and DEEP_ARCHIVE , please see Storage Class Overview. Note that this header will be returned only if the object’s storage class is not STANDARD. | enum |
x-cos-storage-tier | Specifies the access tier of INTELLIGENT TIERING objects. Valid values: FREQUENT INFREQUENT ARCHIVE_ACCESS DEEP_ARCHIVE_ACCESS | enum |
ARCHIVE
and POST Object restore
has been called to restore it, the following response headers will be returned:Header | Description | Type |
x-cos-restore | Indicates the status of the restoration process: If the restoration is ongoing, the value of the response header will be ongoing-request="true" If the object has already been restored, the response header will include the time when COS will delete the temporary copy, e.g., ongoing-request="false", expiry-date="Tue, 19 Nov 2019 16:00:00 GMT" | string |
x-cos-restore-status | This response header will be returned if the restoration is ongoing, indicating the current restoration mode, the request time of the restoration and the expected completion time of restoration. tier="standard"; request-date="Mon, 18 Nov 2019 09:34:50 GMT";expect-restore-date="Fri, 27 Dec 2019 08:20:00 GMT" For more information on restoration modes, see POST Object restore Note: Only archive-type objects support displaying the expected completion time of restoration. Deep archive objects do not support displaying the expected completion time of restoration. | string |
Header | Description | Type |
x-cos-version-id | Object version ID | string |
Name | Description | Type |
x-cos-replication-status | Current replication status. The source object shows Pending, Failed, or Complete. The target object shows Replica. | string |
HEAD /exampleobject HTTP/1.1Host: examplebucket-1250000000.cos.ap-beijing.myqcloud.comDate: Fri, 10 Apr 2020 18:17:36 GMTAuthorization: q-sign-algorithm=sha1&q-ak=AKID8A0fBVtYFrNm02oY1g1JQQF0c3JO****&q-sign-time=1586542656;1586549856&q-key-time=1586542656;1586549856&q-header-list=date;host&q-url-param-list=&q-signature=cde88925e00d1c90ba74985ca43b610bdf6b****Connection: close
HTTP/1.1 200 OKContent-Type: image/jpegContent-Length: 16Connection: closeDate: Fri, 10 Apr 2020 18:17:36 GMTETag: "ee8de918d05640145b18f70f4c3aa602"Last-Modified: Fri, 10 Apr 2020 18:17:25 GMTServer: tencent-cosx-cos-hash-crc64ecma: 16749565679157681890x-cos-request-id: NWU5MGI4NDBfNjFjODJhMDlfMzY2NjVfMjNi****
HEAD /exampleobject HTTP/1.1Host: examplebucket-1250000000.cos.ap-beijing.myqcloud.comDate: Wed, 29 Jul 2020 06:51:49 GMTIf-None-Match: "ee8de918d05640145b18f70f4c3aa602"Authorization: q-sign-algorithm=sha1&q-ak=AKID8A0fBVtYFrNm02oY1g1JQQF0c3JO****&q-sign-time=1596005509;1596012709&q-key-time=1596005509;1596012709&q-header-list=date;host;if-none-match&q-url-param-list=&q-signature=9d087f05c259ca271efe91fc780cdced75c6****Connection: close
HTTP/1.1 304 Not ModifiedContent-Type: application/xmlContent-Length: 0Connection: closeDate: Wed, 29 Jul 2020 06:51:49 GMTServer: tencent-cosx-cos-request-id: NWYyMTFjODVfZDNjODJhMDlfMWU1MWVfOTUy****x-cos-trace-id: OGVmYzZiMmQzYjA2OWNhODk0NTRkMTBiOWVmMDAxODczNTBmNjMwZmQ0MTZkMjg0NjlkNTYyNmY4ZTRkZTk0NzJmZTI0ZmJhYTZmZjYyNmU5ZGNlZDI5YjkyODkwYjNhZjhlNGQ0MDY1ZGIxNDEwMWYwOTg1NDc4Mzg4MTE3****
HEAD /exampleobject HTTP/1.1Host: examplebucket-1250000000.cos.ap-beijing.myqcloud.comDate: Wed, 29 Jul 2020 06:51:50 GMTIf-Match: "aa488bb80185a6be87f4a7b936a80752"Authorization: q-sign-algorithm=sha1&q-ak=AKID8A0fBVtYFrNm02oY1g1JQQF0c3JO****&q-sign-time=1596005510;1596012710&q-key-time=1596005510;1596012710&q-header-list=date;host;if-match&q-url-param-list=&q-signature=38afe94fc61ca0b3aa763e00b23fd90ac23e****Connection: close
HTTP/1.1 412 Precondition FailedContent-Type: application/xmlContent-Length: 0Connection: closeDate: Wed, 29 Jul 2020 06:51:50 GMTServer: tencent-cosx-cos-request-id: NWYyMTFjODZfMzBjMDJhMDlfMmU3ZF9kYTE4****x-cos-trace-id: OGVmYzZiMmQzYjA2OWNhODk0NTRkMTBiOWVmMDAxODczNTBmNjMwZmQ0MTZkMjg0NjlkNTYyNmY4ZTRkZTk0NzJmZTI0ZmJhYTZmZjYyNmU5ZGNlZDI5YjkyODkwYjNhZDRkOWFlZjczOWExNjZmY2RiNjhjNGIwZWQ3YjYw****
HEAD /exampleobject HTTP/1.1Host: examplebucket-1250000000.cos.ap-beijing.myqcloud.comDate: Fri, 10 Apr 2020 18:18:19 GMTAuthorization: q-sign-algorithm=sha1&q-ak=AKID8A0fBVtYFrNm02oY1g1JQQF0c3JO****&q-sign-time=1586542699;1586549899&q-key-time=1586542699;1586549899&q-header-list=date;host&q-url-param-list=&q-signature=6a6d4dd5b5a9e6379f300715985bfb60b947****Connection: close
HTTP/1.1 200 OKContent-Type: image/jpegContent-Length: 16Connection: closeDate: Fri, 10 Apr 2020 18:18:19 GMTETag: "ee8de918d05640145b18f70f4c3aa602"Last-Modified: Fri, 10 Apr 2020 18:18:08 GMTServer: tencent-cosx-cos-hash-crc64ecma: 16749565679157681890x-cos-request-id: NWU5MGI4NmJfNmRjMDJhMDlfZGQwNl8xZmE4****x-cos-server-side-encryption: AES256
HEAD /exampleobject HTTP/1.1Host: examplebucket-1250000000.cos.ap-beijing.myqcloud.comDate: Fri, 10 Apr 2020 18:18:30 GMTAuthorization: q-sign-algorithm=sha1&q-ak=AKID8A0fBVtYFrNm02oY1g1JQQF0c3JO****&q-sign-time=1586542710;1586549910&q-key-time=1586542710;1586549910&q-header-list=date;host&q-url-param-list=&q-signature=7c8a1c93b9701e653c2ab00419f976397d00****Connection: close
HTTP/1.1 200 OKContent-Type: image/jpegContent-Length: 16Connection: closeDate: Fri, 10 Apr 2020 18:18:30 GMTETag: "00ca268468481b847fc2d8a9bd84578d"Last-Modified: Fri, 10 Apr 2020 18:18:19 GMTServer: tencent-cosx-cos-hash-crc64ecma: 16749565679157681890x-cos-request-id: NWU5MGI4NzZfN2FjODJhMDlfMjU3N18xYTEz****x-cos-server-side-encryption: cos/kmsx-cos-server-side-encryption-cos-kms-key-id: 48ba38aa-26c5-11ea-855c-52540085****
HEAD /exampleobject HTTP/1.1Host: examplebucket-1250000000.cos.ap-beijing.myqcloud.comDate: Fri, 10 Apr 2020 18:18:41 GMTx-cos-server-side-encryption-customer-algorithm: AES256x-cos-server-side-encryption-customer-key: MDEyMzQ1Njc4OUFCQ0RFRjAxMjM0NTY3ODlBQkNE****x-cos-server-side-encryption-customer-key-MD5: U5L61r7jcwdNvT7frmUG****Authorization: q-sign-algorithm=sha1&q-ak=AKID8A0fBVtYFrNm02oY1g1JQQF0c3JO****&q-sign-time=1586542721;1586549921&q-key-time=1586542721;1586549921&q-header-list=date;host;x-cos-server-side-encryption-customer-algorithm;x-cos-server-side-encryption-customer-key;x-cos-server-side-encryption-customer-key-md5&q-url-param-list=&q-signature=99ad258fc295f43feb0546bb2346c8269dc5****Connection: close
HTTP/1.1 200 OKContent-Type: image/jpegContent-Length: 16Connection: closeDate: Fri, 10 Apr 2020 18:18:41 GMTETag: "582d9105f71525f3c161984bc005efb5"Last-Modified: Fri, 10 Apr 2020 18:18:31 GMTServer: tencent-cosx-cos-hash-crc64ecma: 16749565679157681890x-cos-request-id: NWU5MGI4ODFfN2NiODJhMDlfMmFmYTVfMWRh****x-cos-server-side-encryption-customer-algorithm: AES256x-cos-server-side-encryption-customer-key-MD5: U5L61r7jcwdNvT7frmUG****
HEAD /exampleobject HTTP/1.1Host: examplebucket-1250000000.cos.ap-beijing.myqcloud.comDate: Fri, 10 Apr 2020 18:19:15 GMTAuthorization: q-sign-algorithm=sha1&q-ak=AKID8A0fBVtYFrNm02oY1g1JQQF0c3JO****&q-sign-time=1586542755;1586549955&q-key-time=1586542755;1586549955&q-header-list=date;host&q-url-param-list=&q-signature=7909dc19780873dfaa51c8b238254098ca1a****Connection: close
HTTP/1.1 200 OKContent-Type: image/jpegContent-Length: 26Connection: closeDate: Fri, 10 Apr 2020 18:19:15 GMTETag: "22e024392de860289f0baa7d6cf8a549"Last-Modified: Fri, 10 Apr 2020 18:19:04 GMTServer: tencent-cosx-cos-hash-crc64ecma: 11596229263574363878x-cos-request-id: NWU5MGI4YTNfZDZjODJhMDlfYmU0MV8xM2Y5****x-cos-version-id: MTg0NDUxNTc1MzA5NjQ2ODI5MTg
HEAD /exampleobject?versionId=MTg0NDUxNTc1MzA5NzU4ODg1Mjg HTTP/1.1Host: examplebucket-1250000000.cos.ap-beijing.myqcloud.comDate: Fri, 10 Apr 2020 18:19:04 GMTAuthorization: q-sign-algorithm=sha1&q-ak=AKID8A0fBVtYFrNm02oY1g1JQQF0c3JO****&q-sign-time=1586542744;1586549944&q-key-time=1586542744;1586549944&q-header-list=date;host&q-url-param-list=versionid&q-signature=1307acd3e8649087c738ecca452a54fa5a79****Connection: close
HTTP/1.1 200 OKContent-Type: image/jpegContent-Length: 16Connection: closeDate: Fri, 10 Apr 2020 18:19:04 GMTETag: "ee8de918d05640145b18f70f4c3aa602"Last-Modified: Fri, 10 Apr 2020 18:18:53 GMTServer: tencent-cosx-cos-hash-crc64ecma: 16749565679157681890x-cos-request-id: NWU5MGI4OThfN2RiNDBiMDlfMTk1MTBfMWZj****x-cos-version-id: MTg0NDUxNTc1MzA5NzU4ODg1Mjg
HEAD /exampleobject HTTP/1.1Host: examplebucket-1250000000.cos.ap-beijing.myqcloud.comDate: Fri, 27 Dec 2019 08:19:35 GMTAuthorization: q-sign-algorithm=sha1&q-ak=AKID8A0fBVtYFrNm02oY1g1JQQF0c3JO****&q-sign-time=1577434775;1577441975&q-key-time=1577434775;1577441975&q-header-list=date;host&q-url-param-list=&q-signature=72408a09a5fc00d77d389559a0cfa5c98e31****Connection: close
HTTP/1.1 200 OKContent-Type: image/jpegContent-Length: 13Connection: closeDate: Fri, 27 Dec 2019 08:19:35 GMTETag: "b62e10bcab55a88240bd9c436cffdcf9"Last-Modified: Fri, 27 Dec 2019 08:19:23 GMTServer: tencent-cosx-cos-request-id: NWUwNWJlOTdfN2VjODJhMDlfOGI1N18yYjYz****x-cos-restore: ongoing-request="true"x-cos-restore-status: tier="expedited"; request-date="Fri, 27 Dec 2019 08:19:29 GMT"x-cos-storage-class: ARCHIVE
HEAD /exampleobject HTTP/1.1Host: examplebucket-1250000000.cos.ap-beijing.myqcloud.comDate: Thu, 02 Jan 2020 18:09:51 GMTAuthorization: q-sign-algorithm=sha1&q-ak=AKID8A0fBVtYFrNm02oY1g1JQQF0c3JO****&q-sign-time=1577988591;1577995791&q-key-time=1577988591;1577995791&q-header-list=date;host&q-url-param-list=&q-signature=ff23b3a44945f019916450add646e963c29b****Connection: close
HTTP/1.1 200 OKContent-Type: image/jpegContent-Length: 16Connection: closeDate: Fri, 10 Apr 2020 18:17:36 GMTETag: "ee8de918d05640145b18f70f4c3aa602"Last-Modified: Fri, 10 Apr 2020 18:17:25 GMTServer: tencent-cosx-cos-hash-crc64ecma: 16749565679157681890x-cos-request-id: NWU5MWRiZjFfMmViMDJhMDlfNjIwOF8zNTU0****x-cos-restore: ongoing-request="false", expiry-date="Mon, 13 Apr 2020 16:00:00 GMT"x-cos-storage-class: ARCHIVE
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