add_headers on text/html only?

[Nick Semenkovich]

I'm trying to add three headers for security to all text/html content:

add_header X-Content-Type-Options 'nosniff';
add_header X-Frame-Options 'DENY';
add_header X-XSS-Protection '1; mode=block';

I'd like to add these to a number of different sites & virtual hosts in nginx.

Q: Is there an easy way to add this to multiple different hosts
without updating every server{} block?

Can I put this into an http{} section in some way (but still limit it
to text/html)?


Best,
Nick
-- 
Nick Semenkovich