<div dir="ltr"><div><div>I have just noticed this header duplication but I could not notice any issue yet.<br><br></div>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 .<br>
<br></div>Makailol<br></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Mon, Jan 20, 2014 at 1:11 PM, Jonathan Matthews <span dir="ltr"><<a href="mailto:contact@jpluscplusm.com" target="_blank">contact@jpluscplusm.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="im">On 20 January 2014 04:54, Makailol Charls <<a href="mailto:makailol7@gmail.com">makailol7@gmail.com</a>> wrote:<br>
> I use nginx/1.4.4 with gunzip = on and gzip_vary = on. This leads to a<br>
> duplicate Vary Header.<br>
</div>[snip]<br>
<div class="im">> This issue is in standard ngx_http_header_filter_module so can anyone<br>
> suggest solution?<br>
<br>
</div>Quick question: other than looking untidy, what's the actual problem<br>
that (does|can) occur when the header is duplicated?<br>
<br>
Jonathan<br>
<br>
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