6 calls to drush_download_file()

drush_hook_pre_pm_enable in ./drush.api.php
Automatically download project dependencies at pm-enable time.
drush_xkcd_display in examples/xkcd.drush.inc
Display a given XKCD cartoon.
package_handler_download_project in commands/pm/package_handler/wget.inc
Download a project.
Project::getInstance in lib/Drush/UpdateService/Project.php
Downloads release info xml from update service.
Project::getReleaseNotes in lib/Drush/UpdateService/Project.php
Prints release notes for given projects.
_make_download_file in commands/make/make.download.inc
Wrapper to drush_download_file().