How do XenForo attachment URL redirects work?

[Amin Sabet]

With an attachment like this:

https://www.mu-43.com/attachments/k6bybbs-jpg.488000/

Does XenForo redirect that to this:

https://www.mu-43.com/attachments/488000/

?

And then does it get redirected again to something else? Because I can't find either of those files referenced above on my server.

I'd like to get an understanding of this so that I can get help with some ngx-pagespeed handling of attachments.

 

[MattW]

Iirc, there are two cross references which maps the id of the attachment to the random file name which is generated when they are stored.

 

[Amin Sabet]

It sounds like it's not going to be easy to get Pagespeed working with attachments unless I use that [bd] addon I don't want to use...

On the other hand, this workaround to add an image extension to attachment URLs may be a good way to get Cloudflare features like Mirage to optimize attachment delivery.