python 2.7 - Token expire before file was uploaded -


i'm using requests session oauth2 authentication. works when upload small files, 4gb file token expired error, looks file uploaded @ closing session part token once more validated.

is there chance handle situation? upload large file token refreshed before session closed or something?

a sample of code below, thank help. cheers!

import requests io import stringio  requests_toolbelt.multipart.encoder import multipartencoder   token_payload = {     'grant_type': 'password',     'client_id': '###',     'client_secret': '###',     'username': '###',     'password': '####' }   def get_token():     response = requests.post(         'https://oauth/token',         params=token_payload)     response_data = response.json()     token = response_data.get('access_token')     return token   # create test file mb = 1024 ** 2 gb = mb * 1024  encoded_string = 'x' * 4 * gb file_test = stringio() file_test.write(encoded_string)  # token token = get_token()  # create form multipart_data = multipartencoder(     fields={         '--': ('4gb_test.txt', file_test, 'text/plain'),         'id': '2217',         'filefielddefid': '4258',     } )  # create headers headers = {     "authorization": "bearer {}".format(token),     'content-type': multipart_data.content_type }  session = requests.session()  response = session.post(     'https://oauth2/rest/external/item/multipartupdate/byid',     headers=headers,     data=multipart_data, )  print(response) # <response [401]>  print(response.content) # b'{"error":"invalid_token","error_description":"access token expired: 0f7f6bd9-4e21-407f-4a78347711a9"}'   # response.close()  ? refreshed token # session.close() ? refreshed token

if want have valid access tokens more time can request refresh tokens , use them generate new access tokens whenever old 1 expires. access tokens valid 1 hour, can maintain timer , generate new access token every time timer reaches 60 minutes. way can have valid access token longer sessions.

you have use grant_type=refresh_token https://tools.ietf.org/html/rfc6749#section-6


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