既存ファイルのアップロードセッションを作成

curl -i -X POST "https://upload.box.com/api/2.0/files/12345/upload_sessions" \
     -H "authorization: Bearer <ACCESS_TOKEN>" \
     -H "content-type: application/json" \
     -d '{
       "file_size": 104857600
     }'

Python

file_size = 26000000
upload_session = client.file('11111').create_upload_session(file_size)
print(f'Created upload session {upload_session.id} with chunk size of {upload_session.part_size} bytes')

レスポンスの例

{
  "id": "F971964745A5CD0C001BBE4E58196BFD",
  "type": "upload_session",
  "num_parts_processed": 455,
  "part_size": 1024,
  "session_endpoints": {
    "abort": "https://upload.box.com/api/2.0/files/upload_sessions/F971964745A5CD0C001BBE4E58196BFD",
    "commit": "https://upload.box.com/api/2.0/files/upload_sessions/F971964745A5CD0C001BBE4E58196BFD/commit",
    "list_parts": "https://upload.box.com/api/2.0/files/upload_sessions/F971964745A5CD0C001BBE4E58196BFD/parts",
    "log_event": "https://upload.box.com/api/2.0/files/upload_sessions/F971964745A5CD0C001BBE4E58196BFD/log",
    "status": "https://upload.box.com/api/2.0/files/upload_sessions/F971964745A5CD0C001BBE4E58196BFD",
    "upload_part": "https://upload.box.com/api/2.0/files/upload_sessions/F971964745A5CD0C001BBE4E58196BFD"
  },
  "session_expires_at": "2012-12-12T10:53:43-08:00",
  "total_parts": 1000
}