headers['authorization'] = urllib3.make_headers(
                basic_auth='%s:%s' % (self.cid, self.csec))['authorization']

            response = self._http.urlopen('POST', self.idp_ep,
                                          body="grant_type=client_credentials",
                                          headers=headers,
                                          preload_content=True,

with open('/etc/hosts', 'rb') as data:
    s3.meta.client.upload_fileobj(data,
                                  'testbucket',
                                  'hosts',
                                  ExtraArgs={'ServerSideEncryption': 'AES256'})

# Upload with server side encryption, using temporary credentials
s3.meta.client.upload_file('/etc/hosts',
                           'testbucket',