When generating a pre-signed URL for download and specifying response-content-disposition to set a target filename, the actual download does not contain the Content-Disposition header therefore the download file does not have the requested filename.

I have confirmed that this works corrected in S3 itself.

I'd be happy to explore a fix if anyone can point me in the right direction/location.
bucket_name = 'test-bucket-%s' % short_uid()
        self.s3_client.create_bucket(Bucket=bucket_name)
        
        object_key = 'key-by-hostname'
        self.s3_client.put_object(Bucket=bucket_name, Key=object_key, Body='something')
        self.s3_client.put_bucket_cors(Bucket=bucket_name,
            CORSConfiguration={
                'CORSRules': [{
                    'AllowedMethods': ['GET', 'PUT', 'POST'],
                    'AllowedOrigins': ['*'],
                    'ExposeHeaders': [
                        'ETag', 'x-amz-version-id'
                    ]
                }]
            },
        )
        
        url = self.s3_client.generate_presigned_url(
            'get_object', Params={'Bucket': bucket_name, 'Key': object_key}
        )
        response = requests.get(url, verify=False)
        self.assertEquals(response.headers['Access-Control-Expose-Headers'], 'ETag,x-amz-version-id')
        
        self._delete_bucket(bucket_name, [object_key])
    def test_s3_copy_md5(self):