This API is used to upload an object to COS in multiple parts. You can upload up to 10,000 parts. The size of each part should be 1 MB to 5 GB, and the last part can be smaller than 1 MB.
Note:
- Multipart upload steps:
- To call this API, you need to first call the Initiate Multipart Upload API to obtain the
UploadId
, which identifies the current upload operation.- Every time you call the
Upload Part
API, you need to include thepartNumber
anduploadId
parameters. You can upload multiple parts out of order.- When the
uploadId
andpartNumber
of a new part are the same as those of a previously uploaded part, the old part will be overwritten. If theuploadId
does not exist, "404 NoSuchUpload" will be returned.
- Only the root account or sub-accounts granted the permission of the
Upload Part
API can call this API.
PUT /<ObjectKey>?partNumber=PartNumber&uploadId=UploadId HTTP/1.1
Host: <BucketName-APPID>.cos.<Region>.myqcloud.com
Date: GMT Date
Content-Type: Content Type
Content-Length: Content Length
Content-MD5: MD5
Authorization: Auth String
[Object Part]
Note:
- Host:
.cos. .myqcloud.com, where is the bucket name followed by the APPID, such as examplebucket-1250000000
(see Bucket Overview > Basic Information and Bucket Overview > Bucket Naming Conventions), andis a COS region (see Regions and Access Endpoints). - Authorization: Auth String (See Request Signature for details.)
Parameter | Description | Type | Required |
---|---|---|---|
partNumber | Part number. Value range: 1−10000 | integer | Yes |
uploadId | Multipart upload ID obtained from the Initiate Multipart Upload API |
string | Yes |
In addition to common request headers, this API also supports the following request headers. For more information about common request headers, please see Common Request Headers.
SSE-related headers
If SSE-C is used during the initialization of the current multipart upload, you need to specify the encryption algorithm and key that were specified during the initialization. Otherwise, you cannot specify the following headers.
Field | Description | Type | Required |
---|---|---|---|
x-cos-server-side-encryption-customer-algorithm | Server-side encryption algorithm. Currently, only AES256 is supported. |
string | Yes |
x-cos-server-side-encryption-customer-key | Base64-encoded server-side encryption key. Example: MDEyMzQ1Njc4OUFCQ0RFRjAxMjM0NTY3ODlBQkNERUY= |
string | Yes |
x-cos-server-side-encryption-customer-key-MD5 | Base64-encoded MD5 checksum of the server-side encryption key. Example: U5L61r7jcwdNvT7frmUG8g== |
string | Yes |
x-cos-traffic-limit | Limits the speed (in bit/s) for the current multipart upload for traffic control. Value range: 819200-838860800 (i.e., 100 KB/s-100 MB/s). If the speed exceeds the limit, a 400 error will be returned. | integer | No |
The request body of this API is the part content of the object (file).
In addition to common response headers, this API also returns the following response headers. For more information about common response headers, please see Common Response Headers.
SSE-related headers
If server-side encryption is used during the initialization of the current multipart upload, this API will return headers used specifically for server-side encryption. For more information, please see Server-Side Encryption Headers.
The response body of this API is empty.
This API returns common error responses and error codes. For more information, see Error Codes.
PUT /exampleobject?partNumber=1&uploadId=1585130821cbb7df1d11846c073ad648e8f33b087cec2381df437acdc833cf654b9ecc6361 HTTP/1.1
Host: examplebucket-1250000000.cos.ap-beijing.myqcloud.com
Date: Wed, 25 Mar 2020 10:07:14 GMT
Content-Type: application/octet-stream
Content-Length: 1048576
Content-MD5: OScKloo1fSQgfpkRFiUH6w==
Authorization: q-sign-algorithm=sha1&q-ak=AKID8A0fBVtYFrNm02oY1g1JQQF0c3JO****&q-sign-time=1585130834;1585138034&q-key-time=1585130834;1585138034&q-header-list=content-length;content-md5;content-type;date;host&q-url-param-list=partnumber;uploadid&q-signature=a815da18232cfec87e8218f32f31b1e2c5eb****
Connection: close
[Object Part]
HTTP/1.1 200 OK
Content-Length: 0
Connection: close
Date: Wed, 25 Mar 2020 10:07:14 GMT
ETag: "39270a968a357d24207e9911162507eb"
Server: tencent-cos
x-cos-hash-crc64ecma: 9973912126177188060
x-cos-request-id: NWU3YjJkNTJfZDBjODJhMDlfMjU4NTZfMjc5MzBh****
PUT /exampleobject?partNumber=1&uploadId=1590862540251355295a5c736513d70d42b92bbde4f0fafb5e0ecb314b55aa0018cc9fa76f HTTP/1.1
Host: examplebucket-1250000000.cos.ap-beijing.myqcloud.com
Date: Sat, 30 May 2020 18:15:50 GMT
Content-Type: application/octet-stream
Content-Length: 13
Content-MD5: EI9SjrY7Zec08nrjMfX/qg==
Authorization: q-sign-algorithm=sha1&q-ak=AKID8A0fBVtYFrNm02oY1g1JQQF0c3JO****&q-sign-time=1590862550;1590869750&q-key-time=1590862550;1590869750&q-header-list=content-length;content-md5;content-type;date;host&q-url-param-list=partnumber;uploadid&q-signature=2a0085596de5861410bcc43f3d107dc9dda5****
Connection: close
[Object Part]
HTTP/1.1 200 OK
Content-Length: 0
Connection: close
Date: Sat, 30 May 2020 18:15:51 GMT
ETag: "108f528eb63b65e734f27ae331f5ffaa"
Server: tencent-cos
x-cos-hash-crc64ecma: 4510578591875220731
x-cos-request-id: NWVkMmEyZDZfYjNjMjJhMDlfMmJlM18zOWI2****
x-cos-server-side-encryption: AES256
PUT /exampleobject?partNumber=1&uploadId=15908625793957d71176fa878282d266a95b79dc2aec159b4a73d1d79c80d4f931cda6ad65 HTTP/1.1
Host: examplebucket-1250000000.cos.ap-beijing.myqcloud.com
Date: Sat, 30 May 2020 18:16:29 GMT
Content-Type: application/octet-stream
Content-Length: 13
Content-MD5: EI9SjrY7Zec08nrjMfX/qg==
Authorization: q-sign-algorithm=sha1&q-ak=AKID8A0fBVtYFrNm02oY1g1JQQF0c3JO****&q-sign-time=1590862589;1590869789&q-key-time=1590862589;1590869789&q-header-list=content-length;content-md5;content-type;date;host&q-url-param-list=partnumber;uploadid&q-signature=2d1231c77c72727bd1c2454726813e095a7e****
Connection: close
[Object Part]
HTTP/1.1 200 OK
Content-Length: 0
Connection: close
Date: Sat, 30 May 2020 18:16:30 GMT
ETag: "1d3e8ae9da423b440341b09f1616f074"
Server: tencent-cos
x-cos-hash-crc64ecma: 4510578591875220731
x-cos-request-id: NWVkMmEyZmRfYTRiOTJhMDlfMTE0ZGRfMmE3OTk4****
x-cos-server-side-encryption: cos/kms
x-cos-server-side-encryption-cos-kms-key-id: 48ba38aa-26c5-11ea-855c-52540085****
PUT /exampleobject?partNumber=1&uploadId=1590862610acd643927bad05cd3947bf98b56b04b0b0b2a45a49969f87cc95b7fd5fcc065a HTTP/1.1
Host: examplebucket-1250000000.cos.ap-beijing.myqcloud.com
Date: Sat, 30 May 2020 18:17:01 GMT
x-cos-server-side-encryption-customer-algorithm: AES256
x-cos-server-side-encryption-customer-key: MDEyMzQ1Njc4OUFCQ0RFRjAxMjM0NTY3ODlBQkNERUY=
x-cos-server-side-encryption-customer-key-MD5: U5L61r7jcwdNvT7frmUG8g==
Content-Type: application/octet-stream
Content-Length: 13
Content-MD5: EI9SjrY7Zec08nrjMfX/qg==
Authorization: q-sign-algorithm=sha1&q-ak=AKID8A0fBVtYFrNm02oY1g1JQQF0c3JO****&q-sign-time=1590862621;1590869821&q-key-time=1590862621;1590869821&q-header-list=content-length;content-md5;content-type;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=partnumber;uploadid&q-signature=6d0914f1db0e03569b6b5d340dc8d71616bf****
Connection: close
[Object Part]
HTTP/1.1 200 OK
Content-Length: 0
Connection: close
Date: Sat, 30 May 2020 18:17:01 GMT
ETag: "ff14981a35a58eb97bca838b055c573b"
Server: tencent-cos
x-cos-hash-crc64ecma: 4510578591875220731
x-cos-request-id: NWVkMmEzMWRfYjRjOTJhMDlfYWRhXzFhZmYw****
x-cos-server-side-encryption-customer-algorithm: AES256
x-cos-server-side-encryption-customer-key-MD5: U5L61r7jcwdNvT7frmUG8g==
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