Adding "Link" Header

[Max]

10 февраля 2012, 02:44 от "jwilson" <nginx-forum at nginx.us>:
> To avoid SEO issues on my subdomains, I need to add a "Link" header to
> support Google's canonical header.  The format is as follows (from
> http://googlewebmastercentral.blogspot.com/2011/06/supporting-relcanonical-http-headers.html):
> 
> Link: <http://www.example.com/white-paper.html>; rel="canonical"
> 
> So, the add_header command would need to reference $uri, but it also
> needs a semi-colon and double quotes.  How can I add this header to my
> config?

location ~* ^/(.*)(\.pdf)$ {
    add_header Link "<$scheme://$host:$server_port/$1.html>; rel=\"canonical\"";      
}

You can use $http_host instead of $host:$server_port, but if you get
a request without the Host header, $http_host will be empty.

Max