call back url error

hi all,
Env: CKAN 2.9, os: Centos7
I got an error when pushinf file on datastore with xloader:
`Express Load starting: /dataset/test-2-9/resource/d891053e-1291-431b-bd2a-6f4c390376d4

Fetching from: https://t-opendata67.alsace.eu/dataset/09802715-e21e-46b3-bd31-e433ab56f596/resource/d891053e-1291-431b-bd2a-6f4c390376d4/download/b_apa_dom_canton_2015.csv

URL error: HTTPSConnectionPool(host='t-opendata67.alsace.eu', port=443): Max retries exceeded with url: /dataset/09802715-e21e-46b3-bd31-e433ab56f596/resource/d891053e-1291-431b-bd2a-6f4c390376d4/download/b_apa_dom_canton_2015.csv (Caused by NewConnectionError(': Failed to establish a new connection: [Errno 111] Connection refused',))

End of log`
It's not an issue, but I realy want to get some clue or information about solving this problem.

Thanks
Sylvain

Start with the xloader datastore upload path on CKAN 2.9 and reproduce the request to the logged download URL. The issue names no source files or tests; completion would require identifying whether the connection-refused error is caused by the remote endpoint or the deployment network and documenting a verified resolution.

Written by the indexing model from the issue text.