/sites/default/settings.php
```
$settings['http_client_config']['proxy']['http'] = 'http://DEPT\\lwhpak:Aa123456@proxy1.dept.censtatd.hksarg:8080';
$settings['http_client_config']['proxy']['https'] = 'http://DEPT\\lwhpak:Aa123456@proxy1.dept.censtatd.hksarg:8080';
$settings['http_client_config']['proxy']['no'] = ['127.0.0.1', 'localhost'];
```
123
