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PUT
/
files
/
upload_sessions
/
{upload_session_id}
cURL
curl -i -X PUT "https://upload.box.com/2.0/files/upload_sessions/F971964745A5CD0C001BBE4E58196BFD" \
     -H "authorization: Bearer <ACCESS_TOKEN>" \
     -H "digest: sha=fpRyg5eVQletdZqEKaFlqwBXJzM=" \
     -H "content-range: bytes 8388608-16777215/445856194" \
     -H "content-type: application/octet-stream" \
     --data-binary @<FILE_NAME>
{
  "part": {
    "part_id": "6F2D3486",
    "offset": 16777216,
    "size": 3222784,
    "sha1": "134b65991ed521fcfe4724b7d814ab8ded5185dc"
  }
}
This endpoint is in the version 2024.0. No changes are required to continue using it. For more details, see Box API versioning.Learn more about Box SDK versioning strategy.

Authorizations

​
Authorization
string
header
required

The access token received from the authorization server in the OAuth 2.0 flow.

Headers

​
digest
string
required

The RFC3230 message digest of the chunk uploaded.

Only SHA1 is supported. The SHA1 digest must be base64 encoded. The format of this header is as sha=BASE64_ENCODED_DIGEST.

To get the value for the SHA digest, use the openSSL command to encode the file part: openssl sha1 -binary <FILE_PART_NAME> | base64.

​
content-range
string
required

The byte range of the chunk.

Must not overlap with the range of a part already uploaded this session. Each part’s size must be exactly equal in size to the part size specified in the upload session that you created. One exception is the last part of the file, as this can be smaller.

When providing the value for content-range, remember that:

  • The lower bound of each part's byte range must be a multiple of the part size.
  • The higher bound must be a multiple of the part size - 1.

Path Parameters

​
upload_session_id
string
required

The ID of the upload session.

Body

application/octet-stream

The binary content of the file.

Response

Chunk has been uploaded successfully.

A chunk of a file uploaded as part of an upload session, as returned by some endpoints.

​
part
Upload part · object

The representation of an upload session chunk. The basic representation of an upload session chunk.