duplicate Vary: Accept-Encoding header

[Makailol Charls]

I have just noticed this header duplication but I could not notice any
issue yet.

But I believe, gzip_vary should do nothing if the header is already
present. And it seems like a bug in core header_filter_module .

Makailol


On Mon, Jan 20, 2014 at 1:11 PM, Jonathan Matthews
<contact at jpluscplusm.com>wrote:

> On 20 January 2014 04:54, Makailol Charls <makailol7 at gmail.com> wrote:
> > I use nginx/1.4.4 with gunzip = on and gzip_vary = on. This leads to a
> > duplicate Vary Header.
> [snip]
> > This issue is in standard ngx_http_header_filter_module so can anyone
> > suggest solution?
>
> Quick question: other than looking untidy, what's the actual problem
> that (does|can) occur when the header is duplicated?
>
> Jonathan
>
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