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On 11/16/24 1:52 PM, Dave Wreski wrote:
Header add Link "<https://%{HTTP_HOST}e%{REDIRECT_PDF_CANONICAL_URL}e>; rel=\"canonical\"" env=REDIRECT_PDF_CANONICAL_URL
However, the %{HTTP_HOST} variable doesn't seem to be set.
I don't think you can expect that environment variable to be defined.
Maybe you want to switch the value argument to use expr= syntax
instead so you can use more built-in values.
Do you mean something like this? This doesn't appear to work
:-(
SetEnvIf Request_URI "(.+)\.pdf$" PDF_CANONICAL_URL=$1\.pdf
Header always set Link
"<%{HTTP_HOST}e%{REDIRECT_PDF_CANONICAL_URL}e>;
rel=\"canonical\"" expr=%{REQUEST_URI} =~ m#(.*)pdf$#"
This is from the example provided in the docs
https://httpd.apache.org/docs/2.4/mod/mod_headers.html
This appears to work, but I'd like to explore the expr option, as
I'm not sure what I've created is reliable and correct.
SetEnvIf Request_URI "(.*)\.pdf$" REQUEST=$1
Header set Link
'<https://example.com%{REDIRECT_REQUEST}e.pdf>;
rel="canonical"' env=REDIRECT_REQUEST
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