This API is used to upload an object in multiple parts to COS. It supports up to 10,000 parts for a single request, each between 1 MB to 5 GB in size, except the last part that can be less than 1 MB.
- To call this request, first use the Initiate Multipart Upload API to get an UploadId that uniquely identifies this Upload Part operation.
- Every time you request the
Upload Part
API, you need to pass inpartNumber
(the part number) and youruploadId
. 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 by the new one. A 404 error,NoSuchUpload
, will be returned if theuploadId
does not exist.
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]
Authorization: Auth String (see Request Signature for more information)
Name | Description | Type | Required |
---|---|---|---|
partNumber | Number that identifies a part to upload. Value range: 1 - 10000 | integer | Yes |
uploadId | ID that identifies the multipart upload. It’s the same as the UploadId generated when using the Initiate Multipart Upload API. | string | Yes |
In addition to common request headers, this API also supports the following request headers. For more information on the common request header, see Common Request Headers.
Headers related to server-side encryption (SSE)
If you used SSE-C to initialize the multipart upload, then you should specify the SSE-C encryption algorithm and key in the Upload Part request. Otherwise, the following headers cannot be used:
Name | 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. For example, MDEyMzQ1Njc4OUFCQ0RFRjAxMjM0NTY3ODlBQkNERUY= |
string | Yes |
x-cos-server-side-encryption-customer-key-MD5 | Base64-encoded MD5 hash of the server-side encryption key. For example, U5L61r7jcwdNvT7frmUG8g== |
string | Yes |
x-cos-traffic-limit | Specifies the traffic limit in bit/s on this upload. Value range: 819200-838860800, that is, 100 KB/s-100 MB/s. if this range is exceeded, a 400 error will be returned | integer | No |
The request body of this API request is the object (file) content.
In addition to common response headers, this API also returns the following response headers. For more information on common response headers, see Common Response Headers.
Headers related to server-side encryption (SSE)
If you initiated the multipart upload using SSE encryption, this API will return SSE headers. For more information, see Server-side encryption headers.
The response body of this API is empty.
This API uses standardized 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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