We’ve had problems downloading files using Nextflow, written in Groovy. Download fails with a message like ‘Unparseable date “Wednesday, 10-Feb-2021 12:05:11 GMT”’. The mirror site works for the same file.
I’ve noticed that the main server returns Last-Modified headers with hyphens in the date part of the timestamp, e.g. “Last-Modified: Friday, 12-Feb-2021 06:34:13 GMT”, while the mirror does not: “Last-Modified: Thu, 16 Jul 2020 22:39:52 GMT”.
We would of course prefer to use the main server.