+# This program is in the public domain within the United States. Additionally,
+# we waive copyright and related rights in the work worldwide through the CC0
+# 1.0 Universal public domain dedication, which can be found at
+# http://creativecommons.org/publicdomain/zero/1.0/
+
+# WARNING: This is an old hack to get the server to report download progress
+# through a side channel. You almost definitely don't need this these days, as
+# modern browsers give access to this information on any upload via javascript.
+