Override proxy's incorrect Content-Type via mime settings

[Jonathan Matthews]

Just a quick thread bump to see if anyone has any ideas ...

On 23 September 2011 17:37, Jonathan Matthews <contact at jpluscplusm.com> wrote:
> Hi all -
>
> I have an upstream proxy that sends the wrong Content-Type header for
> a load of images. Sometime it doesn't send any header at all.
>
> I'm trying to get Nginx not only to remove the upstream's Content-Type
> header ("proxy_hide_header"), but also to insert the correct header.
> Unfortunately, I can't hard-code the value as there are a variety of
> image formats being used. "proxy_hide_header" doesn't seem to do
> anything other than block the incorrect value, and
> "proxy_ignore_headers" won't accept "Content-Type".
>
> How can I both remove upstream's incorrect header, and also add the
> header than Nginx *would* have used if it were serving the content
> from local disk?
> In other words, how do I add the header with a value derived from the
> MIME settings currently configured, via the requested file's
> extension?
>
> Version 0.7.67, but can upgrade if required.
>
> Many thanks,
> Jonathan
> --
> Jonathan Matthews
> London, UK
> http://www.jpluscplusm.com/contact.html
>