如何将规范标头设置为HTTP响应？

Question

I know that I can add a tag to the html head

<link rel="canonical" href="https://geoffkenyon.com/how-to-add-canonical-tag-to-http-headers">

But I want to add this information in a HTTP response header instead. What header key and value would the above tag translate to?

I plan to do this in nginx as:

location /old-link {
    add_header key value;
}

Answer 1

This adds a header successfully. I haven't yet validated that google and others understand it.

location /docs-test/Otii_Tech_Spec.pdf {
    add_header Link '< href=https://geoffkenyon.com/how-to-add-canonical-tag-to-http-headers >; rel=\"canonical\"';
}